The answers to all the subparts are given below:
(A) Minimum percentage of commuters in the city: 0.75(B) Minimum percentage of commuters in the city has a commute time within 1.5 standard deviations of the mean: [16.65, 37.95](C) Minimum percentage of commuters who have commute times between 6 minutes and 48.6 minutes: 89%What is the percentage?A percentage is a number or ratio expressed as a fraction of 100 in mathematics. Although the abbreviations "pct.", "pct.", and occasionally "pc" is also used, the percent sign, "%," is frequently used to indicate it. A percentage is a number without dimensions and without a standard measurement. By dividing the value by the total value and multiplying the result by 100, one can determine the percentage. The percentage calculation formula is (value/total value)×100%.So, (A) Chebyshev's theorem is used:
There can only be 1/k2 values of a distribution.k deviations from the mean are used.Here k = 2So,
1/k² = 1/2² = 1/4 = 0.25Therefore, the minimum proportion of commuters who are within two standard deviations of the mean is:
1 - 0.25 = 0.75 m(B) Minimum percentage of commuters in the city has a commute time within 1.5 standard deviations of the mean:
Here, k = 1.5
1/k² = 1/1.5² = 1/2.25 = 0.444Consequently, the shortest commute within two standard deviations of the mean is:
1 - 0.444 = 0.56 = 56%Within 1.5 standard deviations, commute times:
[27.3 - (1.5 × 7.1), 27.3 + (1.5 * 7.1)[16.65, 37.95](C) Minimum percentage of commuters who have commute times between 6 minutes and 48.6 minutes:
X - m /sdX = 6= (6 - 27.3) / 7.1 = - 3X = 48.6= (48.6 - 27.3) / 7. 1 = 3So,
1/k² = 1 / 3² = 1/91 - 1/9 = 8/9= 0.888 = 0.89 = 89%Therefore, the answer to all the subparts are given below:
(A) Minimum percentage of commuters in the city: 0.75(B) Minimum percentage of commuters in the city has a commute time within 1.5 standard deviations of the mean: [16.65, 37.95](C) Minimum percentage of commuters who have commute times between 6 minutes and 48.6 minutes: 89%Know more about percentages here:
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The correct question is given below:
The mean commute time to work for a resident of a certain city is 27.3 minutes. Assume that the standard deviation of the commute time is 7.1 minutes to complete parts (a) through (c).
(a) What minimum percentage of commuters in the city has a commute time within 2 standard deviations of the mean?
nothing% (Type an integer or a decimal.)
(b) What minimum percentage of commuters in the city has a commute time within 1.5 standard deviations of the mean? What are the commute times within 1.5 standard deviations of the mean?
The minimum percentage of commuters in the city that has a commute time within 1.5 standard deviations of the mean is nothing%. (Round to one decimal place as needed.)
The commute times within 1.5 standard deviations of the mean are between nothing and nothing.
(Type an integer or a decimal. Use ascending order.)
(c) What is the minimum percentage of commuters who have commute times between 6 minutes and 48.6 minutes?
nothing% (Round to one decimal place as needed.)
The base angle of an isosceles triangle measures 40 degrees. What is the measure of the
top, vertex angle?
O 80°
O 140°
O 100°
O 40°
The measure of the top, vertex angle of an isosceles triangle is option c 100 degrees
Given,
The base angle of an isosceles triangle = 40 degrees
We have to find the top, vertex angle:
Isosceles triangle:
Therefore, an isosceles triangle has two equal sides as well as two equal angles. The Greek words iso (same) and skelos are the source of the name (leg). An equilateral triangle is one in which all of its sides are equal, whereas a scalene triangle is one in which none of its sides are equal.
Here,
We know that total interior angle of a triangle is 180°
In an isosceles triangle base angles will be equal.
Here, base angle is 40 degrees.
Now, the top, vertex angle = total angle - base angle × 2
= 180 - 40 × 2
= 180 - 80
= 100
That is, the top, vertex angle of an isosceles triangle is 100°
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The weight of 6 eggs is shown. Identify the constant of proportionality of total weight to number of eggs.
The weight of 6 eggs is 264 g.
Answer:
44
Step-by-step explanation:
Let the number of eggs be N, and the weight be M
M is directly proportional to N.
.: M= kN
264 = 6k
.; k(the constant of proportionality is) = 264/6
k = 44.
Schools A and B are competing in an academic contest. Correct answers earn 12 points. Incorrect answers lose 3 points. In the final round, School A gives the same number of correct and incorrect answers. School B gives no incorrect answers and the same number of correct answers as School A. School A started the final round with 87 points. School B started with 45. The game ends with the two schools tied. Let x represent the number of correct answers given by School A in the final round. Write an equation that models the outcome of the contest. Then find the number of answers that each school got correct in the final round.
School A got 14 questions correct and School B got 14 questions correct.
What are the number of correct answers?The first step is to form a linear equations that represent the scores of the schools in the final round. A linear equation is an equation that has a single variable that is raised to the power of one. When graphed, a linear equation is usually a straight line.
Let x represent the number of correct and incorrect answers scored by School A
Total score at the end of the final round = beginning score + total scores of correct answers - total scores of incorrect answers
Total score at the end of the final round for School A :
87 + (12 ×x ) - (3 × x)
87 + 12x -3x
87 + 9x
Total score at the end of the final round for School B :
45 + (12 ×x )
45 + 12x
If the two schools are tied, it means that both of the above expressions would be equal
45 + 12x = 87 + 9x
12x - 9x = 87 - 45
3x = 42
x = 42 / 3
x = 14
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Answer:
have a great day
Step-by-step explanation:
Find the missing length
√32 or 4√2 is the missing length of the right angle triangle whose other 2 legs measure 4 by 4 units.
What is the missing length of the triangle?Pythagorean theorem states that the "square on the hypotenuse of a right-angled triangle is equal in area to the sum of the squares on the other two sides.
It is expressed as;
c = √( a² + b² )
Given the data in the diagram;
Side length a = 4Side length b = 4Hypotenuse c = ?To determine the missing length, plug the given values into the formula above and solve for c.
c = √( a² + b² )
c = √( (4)² + (4)² )
c = √( 16 + 16 )
c = √( 32 )
Hypotenuse c = √32 or 4√2
Therefore, the missing length of the right angle triangle is √32.
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please help thank you
The interest of the CD account's of Ethan after 6 year is $756.
What is termed as the simple interest?Simply multiplying the everyday interest rate by both the principal and the amount of time between payments yields simple interest.Customers who pay their loans in full or early each month benefit from simple interest.Auto loans as well as short-term personal loans seem to be typically interest-only loans.For the given question;
Ethan deposit $7,000 into a certificate of deposit CD for 6 years.
The formula for finding the simple interest is;
SI = PRT/100
where,
SI = simple interest P = principal amount ($7,000)R = rate of interest (1.8%)T = time duration (6 years)Put the values in the formula,
SI = 7,000×1.8×6/100
Simplifying;
SI = 756.
Thus, the simple interest gained after 6 years will be $756.
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Find the area of the shaded region
need this ASAP!
ALL THE SHAPES HERE ARE RECTANGLES AND THE AREA OF A RECTANGLE IS =L×B
TO GET THE AREA OF THE SHADED PART WE SAY THE AREA OF THE OUTSIDE SHAPE SUBTRACT THE AREA OF THE INNER SHAPE.
LET US FIND THE AREA OF THE OUTSIDE RECTANGLE FIRST.
[tex]a1 = (x + 5)(x - 1) \\ = {x}^{2} - x + 5x - 5 \\ a = {x}^{2} +4 x - 5[/tex]
NOW LET US FIND THE AREA OF THE INNER RECTANGLE.
[tex]a2 = (x + 1)(x - 4) \\ a = {x}^{2} - 4x + x - 4 \\ \\ a = {x }^{2} - 3x - 4[/tex]
the area of the shaded part is given by
[tex]a1 - a2 = ( {x}^{2} +4 x - 5) - ( {x}^{2} - 3x - 4) \\ = {x}^{2} + 4x - 5 - {x }^{2} + 3x + 4 \\ = {x}^{2} - {x}^{2} + 4x + 3x - 5 + 4 \\ areashaded = 7x - 1[/tex]
PLEASEEEEEEEEEE HELP ME I NEED HELP I AM PRACTICING FOR A TEST AND I CANT UNDERSTAND THIS
Answer:
2°C
Step-by-step explanation:
-3 + 5 = 11
Answer:
The temperature is 3°
Step-by-step explanation:
If we start at -3, then we go to -2, then -1, then 0, then 1 and then 2.
How many non-identical triangles can be made using these side lengths:
5 cm, 7 cm, and 10 cm
By applying the Triangle Inequality Theorem, the number of non-identical triangles that can be made using the given side lengths is one.
What is the Triangle Inequality Theorem?In Mathematics, the Triangle Inequality Theorem can be defined as a type of theorem which states that the sum of any two (2) side lengths of a triangle must be greater than the measure of the third (2) side.
This ultimately implies that, the sum of the lengths of any two (2) sides of a triangle cannot be less than the length of the third (3) side of the triangle in accordance with the Triangle Inequality Theorem, as represented by this mathematical expression:
b - c < a < b + c
Where:
a, b, and c represent the side lengths of this triangle.
By applying the Triangle Inequality Theorem to the side lengths of this triangle, the number of non-identical triangles is given by:
5 + 7 > 10
12 > 10 (True).
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PLEASE HELP!!!!!!!!! WILL MARK BRAINLIEST IF CORRECT
Write a system of equations to describe the situation below, solve using any method, and fill in the blanks.
A baseball coach takes her team out for pizza every time they win a game. Not everyone can come each time, so she orders the pizzas based on how many players are coming. After last week's victory, she bought 3 small pizzas and 4 large pizzas, the perfect amount for the 19 players going out for pizza. This week, there were 25 players going, so she ordered 5 small pizzas and 5 large pizzas, which was also just the right amount. How many people does each size of pizza feed?
Each small pizza feeds
people, and each large pizza feeds
people.
1 small pizza and 4 large pizza feeds people according to the system of equations.
Let the number of small pizza be x and the number of large pizza be y.
So, we get the two equations as:
3 x + 4 y = 19 ...(1)
5 x + 5 y = 25 ...(2)
Taking 5 common from equation 2, we get that:
x + y = 5
x = 5 - y
Put it in equation 1, we get that:
15 - 3 y + 4 y = 19
15 + y = 19
y = 4
x = 5 - 4 = 1
Therefore, we get that, 1 small pizza and 4 large pizza feeds people according to the system of equations.
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AB=3x, BC=x+5 and AC=24. what is the midpoint of ac?
IF AB=3x, BC=x+5 and AC=24 then the midpoint of AC is point B.
What does a midpoint mean?Midpoint, as the word suggests, means the point which lies in the middle of something. Midpoint of a line segment means a point which lies in the mid of the given line segment.
WE have given that AB=3x, BC=x+5 and AC=24. Since B is the midpoint, then we have:
AB = BC = AC/2
Now Substitute and solve for x:
AB = BC
x + 5 = 3x
x + -3x = -5
2x = 5
x = 5/2
AB = 3(5/2) = 15/2
BC = x + 5 = 5/2 + 5 = 15/2
Hence, the midpoint of AC is point B.
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Consider the function shown.
Which inequality represents the range of the function?
Answer:
The correct answer is C.
How do you write 52 in scientific notation?
× 10
Answer:
5.2 × 10 to the power of 1
Step-by-step explanation:
If the function 5x y = 1 has the domain {-2, 1, 6}, then what is the corresponding range? a. {-9, 6, 31} b. {9, -6, -31} c. {-11, 4, 29} d. {11, -4, -29}
If the function 5x+ y = 1 has the domain {-2, 1, 6}, then {11, -4, -29} is the corresponding range and the answer to your question is: letter D
Function 5x + y = 1
Domain {-2, 1, 6}
Process
Domain is the possible values of the independent variable.
Range is the values of the dependent variable.
Evaluate the function with each of the domain values to get "y"
When x = -2
5(-2) + y = 1
-10 + y = 1
y = 10 + 1
y = 11
When x = 1
5(1) + y = 1
5 + y = 1
y = -5 + 1
y = -4
When x = 6
5(6) + y = 1
30 + y =1
y = 1 - 30
y = -29
Range = { 11, -4 , -29}
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[tex]2x-3=x+5[/tex]hjgctyrksrykfy.gulh/
Answer: x=8
Step-by-step explanation:
2x-3+x+5
2x-3+3=x+5+3 (Add 3 to both sides)
-2x=x+8
_____________
2x=x+8
2x-x=x+8-x (Subtract x from both sides)
_____________
Combine like terms
_____________
2x-x=x+8-x
1x=x+8-x
Multiply by 1
1x=x+8-x
x=x+8-x
_____________
Combine like terms
x=x+8-x
[x=8]
A sphere had a 6-inch radius (r).
volume of the sphere?
A. 24 cubic inches B. 32 cubic inches
C. 216 cubic inches
D. 288 cubic inches
The volume of sphere in terms of is 288 cubic inches, if the sphere has a radius of 6 inches.
What is the volume of sphere?
In mathematics, the volume of the sphere defines the capacity of a sphere. It is measured in the cubic unit. Basically, it tells the amount of the air it can hold inside the sphere.
According to the question, the given data state that the sphere has a radius of 6 inches
Using standard formula for volume of sphere is,
Volume of the sphere = (4/3)πr³
where, r - radius of sphere and it is 6 inches
Therefore, volume of sphere = (4/3)π(6)³ = (4/3)π(216) = 288 Cubic inches
Hence, the volume of sphere in terms of is 288 cubic inches, if the sphere has a radius of 6 inches.
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can anybody help me with 15/16 converting it into a decimal
Answer: 15/16 is written as 0.9375 in decimal form.
Step-by-step explanation:
To convert any fraction to decimal form, we just need to divide its numerator by the denominator.
Here, the fraction is 15/16 which means we need to perform 15 ÷ 16.
This gives the result 0.9375
= 15/16
= 15 ÷ 16
= 0.9375
Given f(x) = ax + b, where a and b are nonzero real numbers, which of the following describes the differences between the graph of f and the graph of the output of f multiplied by
On multiplying by [3], the slope becomes 3 times the original slope and
y - intercept becomes 3 times of the original value.
What is the general equation of a Straight line?
The general equation of a straight line is -
[y] = [m]x + [c]
where -
[m] is slope of line which tells the unit rate of change of [y] with respect to [x].
[c] is the y - intercept i.e. the point where the graph cuts the [y] axis.
The equation of a straight line can be also written as -
Ax + By + C = 0
By = - Ax - C
y = (- A/B)x - (C/A)
We have the following problem -
f(x) = ax + b, where [a] and [b] are nonzero real numbers. Now, the function f(x) is multiplied by 3.
The given straight line is -
y = f(x) = ax + b
After multiplied by [3], we get -
y' = 3f(x) = 3(ax + b) = (3a)x + (3b)
Therefore, on multiplying by [3], the slope becomes 3 times the original slope and y - intercept becomes 3 times of the original value.
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[Complete question - Given f(x) = ax + b, where a and b are nonzero real numbers, which of the following describes the differences between the graph of f and the graph of the output of f multiplied by 3 ]
LO3
Ollie is paid 65p for each pizza he delivers. He is
paid £49.45 for a weekend shift including £12.40 in
tips.
How many pizzas did he deliver during the shift?
You must show your working.
Madelyn went to the hardware store and bought 7 identical wooden boards. when madelyn placed all the boards end-to-end, the line was 1.9 meters long. to the nearest tenth of a meter, how long was each board?
The length of each wooden board bought by Madelyn was 0.27 meters.
What is defined as the division?Multiplication is the inverse of division. If 3 groups of 4 add up to 12, 12 separated into three equal groups adds up to 4 in each group in division.Each component of a division equation has its own name.Dividend: The dividend is indeed the number divided during the division process.Divisor: The divisor is the number with which the dividend is divided.Quotient: A quotient is an outcome of the division process.Quotient: A quotient is an outcome of the division process. emainder: We can't always divide things exactly. There could be an extra number. The leftover number is known as the remainder.The following explains the connection between these four parts: Dividend = Divisor x Quotient + RemainderFor the given question.
The number of wooden board bought by Madelyn = 7.
The length of all boards = 1.9 meters.
Thus, to find the length of each wooden board, simply divide the total length by the total board as each board is identical.
Each length = total length/number of boards
Each length = 1.9/7
Each length = 0.27 meter.
Thus, the length of each board bought by the Madelyn is 0.27 meters.
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wrapping paper is on sale at 3 rolls for $4.25. how many rolls can dankia buy with $20
Answer:
12 rolls, because 4.25 go into 20 , four times so u take 4 and multiply it by 3 and get 12.
Helppppppppppppp pls
Answer: x = -1 , F
Step-by-step explanation:
Hard to see your pic, but
[tex](-b+\sqrt{b^{2}-4ac } )/2a\\(-b-\sqrt{b^{2}-4ac } )/2a[/tex]
[tex](-5-\sqrt{5^{2}-16} ) / 8 = -1[/tex]
Your answer is: x = -1
solve for c -49 = 2c - 29
Answer:
c = -10
Step-by-step explanation:
Hello!
According to the question we need to solve for c in the equation -49 = 2c - 29
-49 = 2c - 29
Flip the equation
2c - 29 = -49
Add 29 to both sides
2c - 29 + 29 = -49 + 29
2c = -20
Divide both sides by 2 to single out the variable
2c/2 = -20/2
c = -10
So, the value of c is -10
Watch help video What is the domain of the function shown in the graph below? 8 19 10 10 e a 4 5 4 14 6 10 W INCOR6 9 8 in to 5 1 2 3 4 5 6 17
The domain of any function represents the set of values of x for which the function is true.
The function shown in the graph starts at x=3 and continues towards +∞
The domain of the function is all values of x greater than or equal to 3.
[tex]\lbrace{x|x}\ge3\rbrace[/tex]Help ! Pleaseeeeeeee asap
A. How many real solutions does the system { y = x² {} y = 2x have?
The system of equations has one real solution (2,4).
What is a system of equations?Simultaneous equations or systems of equations are two or more equations in algebra that must be solved simultaneously (i.e., the solution must satisfy all the equations in the system). The number of equations must match the number of unknowns for a system to have a unique solution.The given system of equations is:
y = x²
y = 2x
Substitute the value of y in the second equation,
x² = 2x
x²- 2x = 0 ( Factorize it)
x(x - 2) = 0
x = 0 and x = 2
Putting the value of x in the equations to obtain the value of y,
y = x² = 0
y = 2x = 2(0) = 0
y = x² = 2² = 4
y = 2x = 2(2) = 4
Therefore the system of equations has only one real solution (2,4).
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9.7g of sugar is needed for every cake made. How much sugar is needed for 4 cakes?
Answer: 38.8g of sugar
Step-by-step explanation:
9.7 x 4= 38.8
AB is a straight line workout the size of angle X
The x value will be 109°. The straight line formed a 180° angle. Solving the equation yields the angle.
What are supplementary angles?Supplementary angles are two angels whose sum is 180°. When a straight line intersects a line, two angles form on each of the sides of the considered straight line.
Those two-two angles are supplementary angles in two pairs. That is, if two supplementary angles are adjacent to each other, their exterior sides form a straight line.
The straight line formed a 180° angle. The resulting equation is as follows:
⇒x+42°+29°=180°
⇒x=109°
Hence, the value of the x will be 109°
The complete question is:
AB is a straight line.
Work out the size of angle x.
Not drawn accurately
42°
Х
29°
А
B
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Classify the quadrilateral whose vertices are: A(3,2); B(0,5); C(-3,2); D(0,-1)x Select all that apply
Solution
- We can plot the coordinates given using a graphing calculator as shown below:
- From the above, we can see that the sides are equal and the looks like a diamond
- Thus, the quadrilateral is a Rhombus
- Since all the angles are 90 degrees, it is also a square only that it was rotated.
- A square is a special type of rectangle, thus, the shape is also a rectangle
- A parallelogram as its opposite sides parallel and opposite angles equal. This is the same with our figure. Thus, it is also a parallelogram
The scatter diagram shows the scores of 10 students in their paper 1 and paper 2 Maths GCSE exams.
a. The graph shows a positive correlation.
b. Using the line of best fit, his predicted score in his second paper could have been between 60 - 65.
What is a Positive Correlation?A positive correlation is a type of correlation whereby two variables move in the same direction. That is, as one increases, the other increases also.
In a scatter plot, a positive correlation exist when both variables appear to move towards the same direction as the line of best fit slopes upwards from left to your right.
a. The scatter plot shows an upward trend on the line of best fit, therefore, the type of correlation shown by the graph is: positive correlation.
b. Using the line of best fit to make prediction, if he got 50 in his paper 1, then the score of the student in his paper 2 could have been between 60 and 65.
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can u help me on b pleasee
a) By definition of standard form, a light-year is equal to 5.880 × 10¹² miles.
b) By simple rule of three, a magnitude of 4.25 light-year is equivalent to a magnitude of 2.499 × 10¹³ miles.
How to convert miles to light-years and viceversa
In this problem we need to convert a magnitude in miles to an equivalent magnitude in light-years and another magnitud in light-years to an equivalent magnitude in miles. Standard form is a notation used to represent both large and small number with no significant loss of precision. This form is described by the following form:
a.b × 10ⁿ
Where:
a - Whole number between 0 and 10.b - Significant decimalsn - Order of magnitudea) A light-year is equal to 5.880 × 10¹² miles.
b) The equivalent magnitude in miles is found by the following simple rule of three:
x = 4.25 ly × (5.880 × 10¹² mi / ly)
x = 2.499 × 10¹³ mi
A magnitude of 4.25 light-year is equivalent to a magnitude of 2.499 × 10¹³ miles.
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