Because the sine of angle ACB = 3/5, then the sine of angle ANM will be equal to 3/5 too.
Understanding TriangleA triangle is a shape with 3 sides. There are 3 types of triangle which are:
equilateral triangle: this type has all sides equalisosceles triangle: this type has 2 sides equalscalene triangle: this one has no sides equalFrom the diagram, we can see that we have a small triangle inside a big triangle. From the principle of triangle, the angle C is equal to angle N.
Let us say angle C is 30° then the angle N will also be equal to 30*. Therefore the angle ACB = angle ANM = 3/5
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I really need help with this! :'(
The expressions that are equivalent to 6x²y + 2xy⁵; are 2(3x²y + xy⁵), 2xy(3x + y⁴), xy(6x + 2y⁴) and 4xy(3/2x + 1/2y⁴). So, the correct options are a, b, e and g.
Give a brief account on algebraic equations.Algebra is known to be a branch of mathematics in which problems are represented as mathematical expressions using letters or variables (x, y, z, etc.) to represent unknown values that may change. The purpose of algebra is to understand what the unknown values are in order to find solutions to problems. The degree of an algebraic equation is the largest power that exists for the variables in the equation. Algebraic equations can be classified by degree as follows:
Linear equationsQuadratic equationsCubic equationsEquation A: 2(3x²y + xy⁵) = 6x²y + 2xy⁵
Equation B: 2xy(3x + y⁴) = 6x²y + 2xy⁵
Equation C: 2x²y(6 + 5y) = 12x²y + 10x²y²
Equation D: 6x²y.2xy⁵
Equation E: xy(6x + 2y⁴) = 6x²y + 2xy⁵
Equation F: 2y(3x + xy⁴)⁰ = 2y
Equation G: 4xy(3/2x + 1/2y⁴) = 6xy + 2xy⁵
Hence, Equation A, B, E and G are the equations found equivalent to the given equation, 6x²y + 2xy⁵.
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9x - 5
−5+ 6x
49°
56°
O 76°
A
O 50⁰
55°
Answer:
∠ A = 76°
Step-by-step explanation:
the sum of the 3 angles in a triangle = 180°
sum the 3 angles and equate to 180
9x - 5 - 5 + 6x + 55 = 180
15x + 45 = 180 ( subtract 45 from both sides )
15x = 135 ( divide both sides by 15 )
x = 9
Then
∠ A = 9x - 5 = 9(9) - 5 = 81 - 5 = 76°
find the mass of the lamina that is a portion of the cone z=sqrt(x^2+y^2) that lies between the planes z=1 and z=3 if the density function is fi(x,y,z)=x^2z
Answer: 6 units
Step-by-step explanation: To find the mass of the lamina, we need to integrate the density function fi(x,y,z) over the volume of the lamina. The lamina is a portion of the cone z=sqrt(x^2+y^2) between the planes z=1 and z=3. We can express this volume using cylindrical coordinates, where rho is the distance from the origin to the point (x,y,z), phi is the angle between the positive x-axis and the line connecting the origin to the point (x,y,z), and z is the height of the point (x,y,z) above the xy-plane.
We have:
1 <= z <= 3
0 <= rho <= 3sin(phi)
0 <= phi <= 2pi
The density function is given by fi(x,y,z) = x^2z. In cylindrical coordinates, we have x = rhocos(phi), y = rhosin(phi), and z = z. Therefore, we can express the density function as:
fi(rho, phi, z) = (rhocos(phi))^2 * z = rho^2cos^2(phi) * z
The mass of the lamina is given by the triple integral of the density function over the volume of the lamina:
M = ∭ fi(rho, phi, z) dV
= ∫∫∫ rho^2cos^2(phi) * z dz dA
= ∫∫[1,3] ∫[0,2pi] ∫[0,3sin(phi)] rho^2cos^2(phi) * z dz d(phi) drho
= ∫[0,2pi] ∫[0,3] ∫[0,rhosin(phi)] rho^2cos^2(phi) * z dz drho d(phi)
= ∫[0,2pi] ∫[0,3] (1/3)rho^3sin(phi)cos^2(phi) d(phi) drho
= ∫[0,2pi] (1/3)[9sin(phi)cos^2(phi)] d(phi)
= (1/3)[9(2/3)]
= 6
Therefore, the mass of the lamina is 6 units.
Which of the following is a correct interpretation of the expression for -2-7
Start at -2 on the number line and move 7 to the left.
Describe Number line?A number line is a visual representation of the real numbers as a straight line. It is a useful tool for understanding and comparing numbers, as well as for performing operations on them.
The number line is typically drawn horizontally, with zero in the center and positive numbers to the right of zero and negative numbers to the left of zero. The distance between any two points on the number line represents the difference between the corresponding numbers.
The number line is also commonly used for representing fractions, decimals, and irrational numbers. For example, fractions can be represented as points on the number line by dividing the line into equal segments, with each segment representing one unit fraction. Decimals can be represented as points on the number line by marking off the appropriate place value.
In addition to basic arithmetic operations such as addition, subtraction, multiplication, and division, the number line can be used to perform more advanced operations such as finding absolute value, calculating distance between two points, and solving linear equations.
Overall, the number line is a powerful visual tool that helps to deepen our understanding of the real numbers and their relationships.
Start at -2 on the number line and move 7 to the left.
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The complete question is:
A chemical solution contains 5.8 ml of water. A chemist adds more water t the solution at a rate of 0.07 ml/s. 9.900 XP 1 How many seconds will it take for the solution to contain 10 ml of water? If your answer is a decimal, give it to 2 d.p.
Answer:
60 seconds
Step-by-step explanation:
Let's start by finding how much more water needs to be added to the solution to reach a total of 10 ml of water:
10 ml - 5.8 ml = 4.2 ml
Now we can use the formula:
time = amount of water added / rate of addition
to calculate the time it will take to add 4.2 ml of water at a rate of 0.07 ml/s:
time = 4.2 ml / 0.07 ml/s
time = 60 seconds (rounded to the nearest second)
Therefore, it will take 60 seconds to add enough water to the solution to make a total of 10 ml of water.
Can you mark me asbrainliest if you appreciate my effort just for favor. Thank you^^
Helpppppppp pleaseeeeee
The result of adding -3 (row 1) to row 2 is determined as (0 10) |-14.
What is the result of the row multiplication?The result of the row multiplication in the matrix is calculated by applying the following method;
row 1 in the given matrix = [1 -4] | 8
To multiply row1 by -3, we will multiply each entity by -3 as shown below;
= -3(1 -4) | 8
= (-3 12) | -24
To add the result to 3;
(-3 12) | -24 + (3 -2)|10
= (0 10) |-14
Thus, the result of the row multiplication is determined by multiplying each entry in row 1, by - 3.
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Draw a coordinate plane
K(10.....) L(......20), and M(30.....) are on that line too
write their missing coordinates
Triangle ABC has vertices at A(−3, 3), B(0, 7), and C(−3, 0). Determine the coordinates of the vertices for the image if the preimage is translated 3 units up.
A′(−3, 0), B′(0, 4), C′(−3, −3)
A′(−3, 6), B′(0, 10), C′(−3, 3)
A′(−6, 3), B′(−3, 7), C′(0, 0)
A′(0, 3), B′(3, 5), C′(0, 0)
Answer:
To translate triangle ABC 3 units up, we need to add 3 to the y-coordinate of each vertex:
A = (-3, 3 + 3) = (-3, 6)
B = (0, 7 + 3) = (0, 10)
C = (-3, 0 + 3) = (-3, 3)
Therefore, the coordinates of the vertices for the image triangle A'B'C' are A(-3, 6), B'(0, 10), and C(-3, 3).
So the correct answer is: A(−3, 6), B(0, 10), C(−3, 3).
Math calculator help me please
The third player hit 4 more home runs than the first player. The algebraic expression that shows the relationship between a and b is: a = 3b. So option A is correct
What is a linear equation and examples?A linear equation in one variable is an equation that has only one variable. It is of the form Ax B = 0, where A and B are two real numbers and x is an unknown variable with only one solution. For example, 9x + 78 = 18 is a linear equation in one variable.
2) Each player's home runs are labeled A, B, C, and D, where A is the first baseman, B is the second baseman, C is the third baseman, and D is the shortstop. We know this:
C = 2B (the third player hit twice as many home runs as the second player)
C/B = D/B = A/C (numbers for first baseman and shortstop are proportional to numbers for third baseman and second baseman)
B = D 4 (second baseman hit 4 more home runs than shortstop)
To solve for the values of A, B, C, and D, we can use the second equation to write:
C/B = D/B
C = D (multiply both sides by B)
C = B - 4 (using the fourth equation to substitute D)
2B = B - 4 (using the first equation to substitute C)
B = 4 (interface to both sides 4)
C = 8 (using the first equation to find C)
D = 4 (using the fourth equation to find D)
A = C/2 = 4 (use another equation to find A)
Therefore the third player (C) hit 8 home runs and the first player (A) hit 4 home runs, so the third player hit 4 more home runs than the first player.
3) The relative relationship between a and b can be expressed as follows:
a/b = 6/2 = 3/1
To write this relationship as an algebraic equation, we can cross multiply to get:
a = 3b
Therefore, the algebraic expression that shows the relationship between a and b is:
a = 3b. So option A is correct
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Find the surface area of the rectangular prism.
Answer:
40
Step-by-step explanation:
Hope this helps! =D
Brainliest! =D
The equation x^2-8x-5=0 can be transformed into the equation (x-p)^2=q, where p and q are real numbers. What is the value of q?
Since p and q are real numbers, the value of q is 21.
What is a quadratic equation?In Mathematics and Geometry, a quadratic equation can be defined as a mathematical expression that can be used to define and represent the relationship that exists between two or more variable on a graph.
In Mathematics, the standard form of a quadratic equation is represented by the following equation;
ax² + bx + c = 0
Next, we would solve the given quadratic equation by using the completing the square method;
x² - 8x - 5 = 0
x² - 8x = 5
In order to complete the square, we would have to add (half the coefficient of the x-term)² to both sides of the quadratic equation as follows:
x² - 8x + (-8/2)² = 5 + (-8/2)²
x² - 8x + 16 = 5 + 16
x² - 8x + 16 = 21
By simplifying, we have;
(x - 4)² = 21
p = 4 and q = 21
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C(n, k-1) + nC(n, k) = C(n + 1, k)
the school day is 6 hours, 15 minutes long. Jenna says that it is 6 1/4 hours long. henry says it is 6.25 hours long. are their statements reasonable? explain
Answer:
Yes
Step-by-step explanation:
we all know there is 60 minutes in an hour. So in order to answer this question we need to know the percentage of 15 to 60 which is really really just 15/60=0.25 so Henry's answer is correct:
6.25 Hours are 6 hours and 15 minutes
and 0.25 really is just a quarter because 4 x 0.25 = 1 so in fraction it is 1/4 so Jenny is also correct on :
6 1/4 hours are 6 hours and 15 minutes
100 Points! Algebra question. Photo attached. Please show as much work as possible. Thank you!
Answer: [tex](f \cdot g)(x) = x^4-11x^2+30.[/tex]
Step-by-step explanation:
We want to find the value of [tex]f(g(x)).[/tex] To do this, we plug in [tex]g(x)[/tex] into the expression for [tex]f(x).[/tex] This gives us:
[tex]f(g(x)) = (x^2-9)^2+7(x^2-9)+12 = x^4-18x^2+81+7x^2-63+12 = \boxed{x^4-11x^2+30}.[/tex]
PLS HELP ME!!!!!
The line plot has ______ dots plotted on it.
Answer:
Step-by-step explanation:
Okay but seriously though, you would have to write the whole question down.
Type the correct answer in each box.
The probabilities of a positive response for two government programs from the citizens in eight cities are given in the table.
City Positive Response
for Program 1 (%) Positive Response
for Program 2 (%)
Atlanta 77.80 82.10
Boston 86.40 86.60
Chicago 65.90 87.50
Dallas 73.80 80.90
Houston 69.70 79.40
Los Angeles 78.40 88.10
Miami 82.50 82.60
Newark 81.40 83.30
Total 68.80 81.70
The chance that a positive response is obtained from Chicago for program 1 is
%. The chance that a positive response is obtained from Chicago for program 2 is
%.
Programme 2 in Los Angeles will be well received by 22 out of 25 people.
what is Probability?Given that the chances of a positive response from Los Angeles residents to two government programmes are 78.4% for Programme 1 and 88.1% for Programme 2, the likelihood of a positive response for Programme 2 given that the person is from Los Angeles must be calculated as follows:
88.1 / 100 = X 44.05 / 50 = X 22,025 / 25 = X
Therefore, Programme 2 will be well-received by 22 out of 25 people in Los Angeles.
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100 Points! Find the third term of (11x+3y)^6. Photo attached. Please show as much work as possible. Thank you!
the third term of the expansion of (11x+3y)⁶ is 798,720x³y³.we can use the binomial theorem to solve this .
what is binomial theorem ?
The binomial theorem is a theorem in algebra that describes the algebraic expansion of powers of a binomial. A binomial is a polynomial with two terms, such as (a + b) or (x - y).
In the given question,
To find the third term of the expansion of (11x+3y)⁶, we can use the binomial theorem, which states that:
(a + b)ⁿ = C(n,0)aⁿb⁰ + C(n,1)*aⁿ⁻¹*b¹+ C(n,2)*aⁿ⁻¹*b² + ... + C(n,n)a⁰bⁿ
where C(n,k) denotes the binomial coefficient, which is the number of ways to choose k items from a set of n items.
In this case, we have a = 11x and b = 3y, and n = 6. We want to find the third term, which corresponds to k = 3 in the expansion. Therefore, we need to compute the binomial coefficient C(6,3), as well as the powers of 11x and 3y that appear in the third term.
The binomial coefficient C(6,3) can be computed as follows:
C(6,3) = 6! / (3! * (6-3)!) = 20
To find the powers of 11x and 3y that appear in the third term, we need to look at the general pattern in the expansion. Each term in the expansion consists of a product of powers of a and b, with the powers of a decreasing by 1 from n to 0, and the powers of b increasing by 1 from 0 to n. Therefore, the kth term in the expansion will have powers of a and b given by aⁿ⁻ᵇand bᵃ, respectively.
In the third term, we have k = 3, so we need to find the coefficient of a³ = a³ = (11x)³ and b³ = (3y)³. The third term is given by:
C(6,3)(11x)³(3y)³
Plugging in the values for C(6,3), (11x)³, and (3y)³, we get:
20*(11x)³*(3y)³ = 2011³x³3³y³ = 798,720x³y³
Therefore, the third term of the expansion of (11x+3y)⁶ is 798,720x³y³.
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Which graph represents the question?
The graph of the piecewise function can be seen in the image attached below where (x+2)² terminates at x = -1, |x - 1| between the interval of x = -1 to x = 1, and [tex]-\sqrt[3]{x}[/tex] from +x-axis to infinity [tex]\infty[/tex]
What is the graph of a piecewise function?A piecewise function is a type of function that has different expressions or formulas for different parts or intervals of its domain. This means that the formula that defines the function changes depending on which part of the domain we are looking at.
Now, to graph the piecewise function, we need to start by identifying the different intervals on which the function is defined and the corresponding expressions that define the function on each interval.
If we have a piecewise function f(x) defined as:
f(x) = (x+2)² for x < -1 is a parabolic function that terminates at x = -1f(x) = |x - 1| for -1 ≤ x ≤ 1, the interval between (-1, 1)f(x) = [tex]-\sqrt[3]{x}[/tex] for x > 1, this includes the values of x for which x > 1 to infinity.The graph of the piecewise function can be seen in the image attached below.
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Is (2, 6) a solution to this system of equations?
y = 3/2x + 3
y = -9x + 1
yes
no
To determine if (2, 6) is a solution to the system of equations:
y = 3/2x + 3 ... (equation 1)
y = -9x + 1 ... (equation 2)
We need to substitute x = 2 and y = 6 into both equations and check if they are true.
Substituting x = 2 and y = 6 into equation 1, we get:
6 = 3/2(2) + 3
6 = 3 + 3
6 = 6
This equation is true.
Substituting x = 2 and y = 6 into equation 2, we get:
6 = -9(2) + 1
6 = -18 + 1
6 = -17
This equation is false.
Since (2, 6) does not satisfy equation 2, it is not a solution to the system of equations. Therefore, the answer is: no.
Which is the most precise description of quadrilateral ABCD?
The most precise description of quadrilateral ABCD is a square.
We have,
Quadrilateral ABCD.
We see that,
AB is parallel to CD
AB = CD _____(1)
AD is parallel to BC.
AD = BC _____(2)
Now,
AB = AD ______(30
From (1), (2), and (3).
AB = BC = CD = AD
This means,
The Quadrilateral ABCD is a square.
Thus,
The most precise description of quadrilateral ABCD is a square.
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dont feel like doing
Answer:
Part a 6 and 9
Step-by-step explanation:
Part B is 7.3 because u just find the sq root of 54 which can't go down the easiest is finding the decimal form
Complete the statement by filling in the blank. Write your answer on a
separate sheet of paper.
A ___________ is a frequency distribution using the means computed from all
possible random samples of a specific size taken from a population. To get the
possible samples use the formula ______, where N is the ________ and n is the ____
size to be taken. The total probability of the sample mean must be equal to ____.
A sampling distribution is a frequency distribution using the means computed from all possible random samples of a specific size taken from a population.
To get the possible samples, use the formula "N choose n", where N is the population size, and n is the sample size to be taken. The total probability of the sample mean must be equal to 1.
Since the mean of all possible samples must be equal to the population mean. The sampling distribution is an important concept in statistics as it allows us to make inferences about the population based on the characteristics of the sample, and helps us estimate parameters and test hypotheses.
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Uncle Fred gives his nephew, Jack, and niece, Jill, £60 between them every year
at Christmas. He splits it between them in the ratio of their ages.
(a) The first time he does this Jack is 1 and Jill is 3. How much does Jill
receive?
[1 mark]
(b) How much does Jack receive the following Christmas?
[1 mark]
(c) How old will Jack be when he receives £25 from Uncle Fred at Christmas?
a) Jill receives £45
b) Jack receives £20 the following Christmas
c) Jack will be 5/4 years old, which is equivalent to 1 year and 3 months when he receives £25 from Uncle Fred.
Explain the term years
Years are a unit of time measurement used to quantify the duration of one complete orbit of the Earth around the sun. A year consists of 365 days, except in a leap year when an extra day is added. The concept of a year is used in various fields, including astronomy, geology, and history.
According to the given information
(a) Let's first find the total ratio of their ages:
1 + 3 = 4
So Jack's share will be:
1/4 x £60 = £15
And Jill's share will be:
3/4 x £60 = £45
Therefore, Jill receives £45.
(b) The next Christmas, Jack will be 2 and Jill will be 4. We can use the same ratio to find Jack's share:
2/6 x £60 = £20
So Jack receives £20.
(c) Let x be the age of Jack when he receives £25 from Uncle Fred. We know that:
1/4 x £60 = £25
Multiplying both sides by 4/60, we get:x = 5/4
So Jack will be 5/4 years old, which is equivalent to 1 year and 3 months, when he receives £25 from Uncle Fred.
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Need answers ASAP!!!
Also, I will give Brainliest to whoever includes an explanation on what 9 ⁻³ means.
The given exponents 9⁻³/9¹² in the form 9ⁿ is 9⁻¹⁵ respectively.
What is Exponentiation?A number's power or exponent, in other words, tells how many times it must be multiplied by itself.
Any integer, fraction, or decimal can serve as the basis in this situation.
Additionally, the exponent might have either a positive or negative value.
Subtract the exponents to divide exponents (or powers) with the same base.
Given that division is the inverse operation of multiplication, it stands to reason that, just as exponents are added when multiplying numbers with the same base, exponents are subtracted when dividing numbers with the same base.
So, we have the exponents as;
9⁻³/9¹²
Then, solve as follows:
9⁻³/9¹²
9⁻³⁻¹²
9⁻¹⁵
Therefore, the given exponents 9⁻³/9¹² in the form 9ⁿ is 9⁻¹⁵ respectively.
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NO LINKS!! URGENT HELP PLEASE!!
If the given angle is in standard position, find two positive coterminal angles and two negatives coterminal angles.
a. 110° positive angles:
negative angles:
b. 165° positive angles:
negative angles:
c. -10° positive angles:
negative angles:
Answer:
a. 110°
Positive coterminal angles: 110° + 360° = 470°, 110° + 2(360°) = 830°
Negative coterminal angles: 110° - 360° = -250°, 110° - 2(360°) = -610°
b. 165°
Positive coterminal angles: 165° + 360° = 525°, 165° + 2(360°) = 885°
Negative coterminal angles: 165° - 360° = -195°, 165° - 2(360°) = -555°
c. -10°
Positive coterminal angles: -10° + 360° = 350°, -10° + 2(360°) = 710°
Negative coterminal angles: -10° - 360° = -370°, -10° - 2(360°) = -730°
Step-by-step explanation:
When an angle is in the standard position, it means that the initial side of the angle is the positive x-axis, and the terminal side of the angle is located in one of the four quadrants of the coordinate plane.
To find coterminal angles, we need to add or subtract multiples of 360 degrees to the given angle while keeping the terminal side in the same position. This is because a full rotation around the origin in the coordinate plane is 360 degrees.
For positive coterminal angles, we add multiples of 360 degrees to the given angle. In the case of 110 degrees, we can add 360 degrees once or twice to get 470 degrees or 830 degrees, respectively.
For negative coterminal angles, we subtract multiples of 360 degrees from the given angle. In the case of -10 degrees, we can subtract 360 degrees once or twice to get -370 degrees or -730 degrees, respectively.
It's important to note that there are infinitely many coterminal angles for any given angle, but we usually restrict our answers to the smallest positive and negative angles that differ from the given angle by a multiple of 360 degrees.
A division of a company produces income tax apps for smartphones. Each income tax app sells for $8. The monthly fixed costs incurred by the division are $20,000, and the variable cost of producing each income tax app is $3.
a) The break-even point for the division is: 4000 units
b) The level of sales for 10% profit is: 4681 units
How to find the break even point for the profit function?The break-even point is defined as the point at which total cost and total revenue are equal, meaning there is no loss or gain for your small business. In other words, you've reached the level of production at which the costs of production equals the revenues for a product.
a) We are told that:
Selling price for income tax app = $8
Monthly fixed cost = $20000
Variable cost producing each app = $3
Thus:
8x = 3x + 20000
5x = 20000
x = 4000 units
b) 8x = 1.1(3x + 20000)
8x = 3.3x + 22000
4.7x = 22000
47x =220000
x = 4681 units
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Missing questions are:
(a) Find the break-even point for the division.
(x,y)=
(b) What should be the level of sales in order for the division to realize a 10% profit over the cost of making the income tax apps? (Round your answer up to the nearest whole number.)
Find the error. A student was finding the measure angle 5 in the figure below. She concluded that m angle 5=86
The answer is Option 2: The measure of angle 5 is corresponding to angle 1. Angle 1 is supplementary to 86. So, measure angle 1 = 94. Since corresponding angles are equal angle 5 = 94.
What is a supplementary angle?An angle that, when combined with another angle, creates a straight angle (measuring 180 degrees), is known as a supplementary angle. In other words, if the sum of the measurements of two angles is 180 degrees, they are supplementary. Contrarily, a complimentary angle is one that, when combined with another angle, creates a right angle (which has a 90-degree angle). In other words, if the sum of the measurements of two angles is 90 degrees, they are complimentary. A straight angle and a right angle are not the same thing, hence it is crucial to understand that one angle cannot be both supplementary and complimentary at the same time.
From the given figure we see that the measure of angle 5 is corresponding to angle 1. Angle 1 is supplementary to 86. So, measure angle 1 = 94. Since corresponding angles are equal angle 5 = 94.
Hence, option 2 is correct.
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The complete question is:
Given a continuous-time system with the input-output relation:
[tex]y(t) = T\left\{x(t) \right\} = x^2(t)[/tex]
Determine whether this system is:
- Linear
- Time-invariant
The given input-output relation is a nonlinear function of the input signal x(t), since it involves squaring the signal at every point in time. A linear system must satisfy the property of superposition, which states that the output to a linear combination of inputs must be the same as the linear combination of the outputs to each individual input.
To determine whether the system is time-invariant, we need to check if a time shift in the input signal produces the same time shift in the output signal. That is, if: [tex]y(t) = T{x(t)}[/tex] for all values of t. Then we want to check [tex]y(t - τ) = T{x(t - τ)}[/tex] for all values of [tex]τ[/tex] and [tex]t[/tex].
We shall the consider the case where [tex]τ > 0[/tex], then we have:
[tex]y(t - τ) = (x(t - τ))^2[/tex]
[tex]T{x(t - τ)} = (x(t - τ))^2[/tex]
Since [tex]y(t - τ) = T{x(t - τ)}[/tex], we can conclude that the given system is time-invariant.
Therefore, the given system is nonlinear but time-invariant.
A crayon factory monitored the number of broken crayons per box during the past day.
Broken crayons per box
Stem Leaf
0 0 4 4 9
1 4 6 8 9 9
2 3 8
3 3
4 0 9
5 1 9
6 1
7 1 3
8 2 4 6 8
9 4 9
How many boxes had at least 20 broken crayons but fewer than 60 broken crayons?
the total number of boxes with at least 20 but fewer than 60 broken crayons is 33.To answer this question, we need to use the stem-and-leaf plot to count the number of boxes with at least 20
what is at least ?
"At least" is a phrase that is used to indicate a minimum quantity or degree of something. It means that the stated quantity or degree is the smallest amount that is acceptable or possible. For example, if someone says "I need at least 10 dollars,"
In the given question,
To answer this question, we need to use the stem-and-leaf plot to count the number of boxes with at least 20 but fewer than 60 broken crayons.
From the stem-and-leaf plot, we can see that the stems 2, 3, 4, and 5 have leaves that add up to at least 20 but fewer than 60:
Stem 2 has leaves 3 and 8, which add up to 11.
Stem 3 has leaf 3, which adds up to 3.
Stem 4 has leaves 0 and 9, which add up to 9.
Stem 5 has leaves 1 and 9, which add up to 10.
Therefore, the total number of boxes with at least 20 but fewer than 60 broken crayons is 11 + 3 + 9 + 10 = 33.
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in buying ground beef for hamburgers, there are several packages from which to choose, as shown in the table below. If johannes needs 5 pounds of beef for his barbeque, what will he pay?
Johannes will need to pay $8.61 for 5 pounds of ground beef
What is the cost of the beef?Since Johannes needs 5 pounds of ground beef, and the available pounds are 1.5, 2, 3, and 3.75 pounds.
To reduce the cost, he need to select the package with the lowest cost per pound.
The cost per pound for each package is:
Package 1: $5.58 / 1.5
= $3.72 per pound
Package 2: $7.44 / 2
= $3.72 per pound
Package 3: $1.16 / 3
= $0.39 per pound
Package 4: $13.95 / 3.75
= $3.72 per pound
Therefore, the package with the lowest cost per pound is Package 3 and package 2 which will give us 5 pounds
So he can do it as:
$1.16 + $7.44
= $8.6
Or
(1 package of 3 pounds x $0.39 per pound) + (1 package of 2 pounds x $3.72 per pound)
= $1.17 + $7.44
= $8.61
Therefore, Johannes will need to pay $8.61 for 5 pounds of ground beef.
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