Answer:
The expression is 42-17-19 OR 42-(17+19).
Step-by-step explanation:
First, we can indicate that we can use subtraction because is giving them away for his birthday.
"He gave one each to the 17 students in his class and to the 19 students in the other third-grade class".
That represents taking away 17 and 19 means that it is subtracting them.
Hope this helps. (:
a wildlife photographer spent 5 minutes taking pictures of a bison at a park. when the bison then decided she didn't want her photograph published, the photographer spent the next 30 minutes convincing the bison that the publicity would be good for the park. by what percent was the time the photographer spent negotiating with the bison greater than the time he spent taking pictures?
The percent of time the photographer spent negotiating with the bison greater than the time he spent taking pictures is 500%
PercentageTime spent taking pictures = 5 minutesTime spent negotiating = 30 minutesPercentage of time negotiating greater than taking pictures = (difference in time) / time to take pictures × 100
= (30 - 5) / 5 × 100
= 25/5 × 100
= 5 × 100
= 500%
Learn more about percentage:
https://brainly.com/question/843074
#SPJ1
-0.2 2 is repeating as a fraction
-0.22 as a repeating fraction is -22/99
How to rewrite as a fraction?The decimal is given as:
-0.22
Express as fraction
-22/100
Subtract 1 from the denominator to rewrite it as a repeating number
-22/99
Hence, -0.22 as a repeating fraction is -22/99
Read more about repeating fractions at:
https://brainly.com/question/304935
#SPJ1
What does the trigonometry angle range -[tex]\pi \leq \alpha \leq \pi[/tex] radians mean?
The trigonometry angle range -π ≤ α ≤ π in radians means angle α is
between -π radians and π radians or -180° and 180°.To answer the question, we need to know what a trigonometric angle range is
What is a trigonometric angle range?A trigonometric angle range is the range of values which the trigonometric angle can have
Since we need to find the meaning of the trigonometry angle range -π ≤ α ≤π.
We know that
-π radians = -π × 180°/π = -180° and π radians = π × 180°/π = 180°.Since α is in the range -π ≤ α ≤ π = -180° ≤ α ≤ 180°, this implies that the angle α is
between -π radians and π radians or between -180° and 180°.So, the trigonometry angle range -π ≤ α ≤ π in radians means that angle α is
between -π radians and π radians or between -180° and 180°.Learn more about trigonometric angle range here:
https://brainly.com/question/27971632
#SPJ1
Describe fully the single transformation which takes shape A to shape B
Shape A was reflected over the y axis and translated 1 unit down to get shape B.
What is a transformation?Transformation is the movement of a point from its initial location to a new location. Types of transformation are reflection, translation, rotation and dilation.
Translation is the movement of a point either up, down, left or right on the coordinate plane.
Shape A was reflected over the y axis and translated 1 unit down to get shape B.
Find out more on transformation at: https://brainly.com/question/4289712
#SPJ1
Janelle makes fruit punch by mixing the ingredients listed below.
• 5 pints of orange juice
• 6 cups of grape juice
• 8 cups of apple juice
How many quarts of fruit punch does Janelle make?
Answer:
6 quarts
Step-by-step explanation:
2 pints = 1 quart
4 cups = 1 quart
• 5 pints of orange juice
5 pints = 5/2 =>2.5 quarts
• 6 cups of grape juice
6 cups = 6/4 => 1.5 quarts
• 8 cups of apple juice
8 cups = 2 quarts
2.5 + 1.5 + 2 = 6 quarts
Please help.. (This is meant to be infinite, so I can't use a calculator)
Answer:
5
Step-by-step explanation:
→ Let x = √20 + √20 .....
x
→ Square both sides
x² = 20 + √20 +√20 + √20
→ Replace √20 +√20 + √20 with x
x² = 20 + x
→ Move everything to the left hand side
x² - 20 - x = 0
→ Factorise
( x + 4 ) ( x - 5 )
→ Solve
x = -4 , 5
→ Discard negative result
x = 5
Note that
[tex]\left(\sqrt{x+a} + b\right)^2 = \left(\sqrt{x+a}\right)^2 + 2b \sqrt{x+a} + b^2 = x + 2b \sqrt{x+a} + a+b^2[/tex]
Taking square roots on both sides, we have
[tex]\sqrt{x+a} + b = \sqrt{x + 2b \sqrt{x+a} + a+b^2}[/tex]
Now suppose [tex]a+b^2=0[/tex] and [tex]2b=1[/tex]. Then [tex]b=\frac12[/tex] and [tex]a=-\frac14[/tex], so we can simply write
[tex]\sqrt{x-\dfrac14} + \dfrac12 = \sqrt{x + \sqrt{x - \dfrac14}}[/tex]
This means
[tex]\sqrt{x-\dfrac14} = -\dfrac12 + \sqrt{x + \sqrt{x - \dfrac14}}[/tex]
and substituting this into the root expression on the right gives
[tex]\sqrt{x - \dfrac14} + \dfrac12 = \sqrt{x - \dfrac12 + \sqrt{x + \sqrt{x - \dfrac14}}}[/tex]
and again,
[tex]\sqrt{x - \dfrac14} + \dfrac12 = \sqrt{x - \dfrac12 + \sqrt{x - \dfrac12 + \sqrt{x - \dfrac14}}}[/tex]
and again,
[tex]\sqrt{x - \dfrac14} + \dfrac12 = \sqrt{x - \dfrac12 + \sqrt{x - \dfrac12 + \sqrt{x - \dfrac12 + \sqrt{x - \dfrac14}}}}[/tex]
and so on. After infinitely many iterations, the right side will converge to an infinitely nested root,
[tex]\sqrt{x - \dfrac14} + \dfrac12 = \sqrt{x - \dfrac12 + \sqrt{x - \dfrac12 + \sqrt{x - \dfrac12 + \sqrt{x - \dfrac12 + \sqrt{\cdots}}}}}[/tex]
We get the target expression when [tex]x=\frac{41}2[/tex], since [tex]\frac{41}2-\frac12=\frac{40}2=20[/tex], which indicates the infinitely nested root converges to
[tex]\sqrt{20+\sqrt{20+\sqrt{20+\sqrt{\cdots}}}} = \sqrt{\dfrac{41}2 - \dfrac14} + \dfrac12 \\\\ ~~~~~~~~ = \sqrt{\dfrac{81}4} + \dfrac12 \\\\ ~~~~~~~~ = \dfrac92 + \dfrac12 = \dfrac{10}2 = \boxed{5}[/tex]
Use the properties of 30-60-90 and 45-45-90 triangles to solve for x in each of the problems below. Then decode the secret message by matching the answer with the corresponding letter/symbol from the exercises.
The trigonometric function gives the ratio of different sides of a right-angle triangle. The given problems can be solved as given below.
What are Trigonometric functions?The trigonometric function gives the ratio of different sides of a right-angle triangle.
[tex]\rm Sin \theta=\dfrac{Perpendicular}{Hypotenuse}\\\\\\Cos \theta=\dfrac{Base}{Hypotenuse}\\\\\\Tan \theta=\dfrac{Perpendicular}{Base}\\\\\\Cosec \theta=\dfrac{Hypotenuse}{Perpendicular}\\\\\\Sec \theta=\dfrac{Hypotenuse}{Base}\\\\\\Cot \theta=\dfrac{Base}{Perpendicular}\\\\\\[/tex]
where perpendicular is the side of the triangle which is opposite to the angle, and the hypotenuse is the longest side of the triangle which is opposite to the 90° angle.
1st.) x = 5 /Sin(30°)
x = 10
!) sin(45°) = 4/x
x = 4/sin(45°)
x = 4√2
I) Cos(45°) = √3 / x
x = √3 / Cos(45°)
x = √6
E) Tan(60°) = 3√3 / x
x = 3√3 / 3
W) For isosceles right-triangle, the angle made by the legs and the hypotenuse is always 45°.
x = 45°
N) x² + x² = (7√2)²
x = 7
V) Tan(60°) = 7 / x
x = 7√3/3
K) x² + x² = (9)²
x = 9/√2
Y) Sin(60°) = 7√3/x
x = 14
M) Sin(30°) = x/11
x = 11/2
T) Sin(45°) = x/√10
x = √5
A) x + 2x + 90° = 180°
x = 30°
O) Sin(45°) = √2 / x
x = 2
R) Tan(30°) = x / 4
x = 4/√3 = 4√3 / 3
S) Sin(60°) = x / (10/3)
x = 5√3 / 3
Learn more about Trigonometric functions:
https://brainly.com/question/6904750
#SPJ1
Quick algebra 1 questions for 50 points!
Only answer if you know the answer, shout-out to subtomex0, tysm for the help!
Answer:
no matter what he has to pay $52
Step-by-step explanation:
because it is annually.
Apply the distributive property to factor out the greatest common factor. 16+36=16+36=
To eliminate the biggest common factor, use the distributive property: Solution: 16 + 36 = 4 (4 + 9)
To “distribute” means to divide something or give a share or part of something. According to the distributive property, multiplying the sum of two or more addends by a number will give the same result as multiplying each addend individually by the number and then adding the products together.
Due to that,
To remove the most significant common factor, we must use the distributive property.
Given expression:16 + 36
1, 2, 4, 8, and 16 make up the number 16.
1, 2, 3, 4, 6, 9, 12, 18, and 36 make up the number 36.
Then, 4 is the most prevalent component.
distributed property
The formula is ab + bc
subtracting 4 from the supplied expression.
Therefore, the distributive property is used.
Learn more about distributive property here :
https://brainly.in/question/7963814
#SPJ4
22. For the following exercises, use the descriptions of each pair of lines given below to find the slopes of Line 1 and Line 2. Is each pair of lines parallel, perpendicular, or neither?
22. Line 1: Passes through (0, 5) and (3, 3)
Line 2: Passes through (1, −5) and (3, −2)
Answer:
The given lines are perpendicular.
Step-by-step explanation:
In the question, two lines are given as line 1 passes through (0,5) and (3,3). Whereas, line 2 passes through (1,-5) and (3,-2).
It is required to find the slope of given lines and figure out whether they are perpendicular, parallel or neither.
To solve this question, first find the slope of both lines. Check if their product is equal to -1, then they are perpendicular. If the slopes are equal the lines are parallel.
Step 1 of 2
Find the slope of first line.
[tex]$$\begin{aligned}&m_{1}=\frac{3-5}{3-0} \\&m_{1}=\frac{-2}{3} \\&m_{1}=-\frac{2}{3}\end{aligned}$$[/tex]
Step 2 of 2
Find the slope of first line.
[tex]$$\begin{aligned}&m_{2}=\frac{-2-(-5)}{3-1} \\&m_{2}=\frac{3}{2} \\&m_{2}=\frac{3}{2}\end{aligned}$$[/tex]
And
[tex]$$\begin{aligned}&m_{1} m_{2}=-\frac{2}{3}\left(\frac{3}{2}\right) \\&m_{1} m_{2}=-1\end{aligned}$$[/tex]
Since, both slopes are reciprocals .
Therefore. the lines are perpendicular.
Identify the graphic that depicts triangle ABC inscribed in sphere P.
The triangle ∆ABC inscribed in sphere P is given by the first graphic.
How can the inscribed triangle be found?One figure is said to be inscribed in another figure when the vertices of the inscribed figure rests on the perimeter of the circumscribing figure.
The relationship between the figures in the given diagram are;
1st graphic : All points of the triangle ∆ABC are located on the surface of the sphere, P
Therefore;
The first graphic depicts ∆ABC inscribed in sphere P2nd graphic: Point C of the triangle ∆ABC is located outside sphere P.
Therefore;
The 2nd graphic does not depicts ∆ABC inscribed in sphere P
3rd graphic: Point A of the triangle ∆ABC in the 3rd graphic is located outside sphere P.
Therefore;
The 3rd graphic does not depicts ∆ABC inscribed in sphere P
4th graphic: Point B of triangle ∆ABC in the 4th graphic is located outside sphere P.
Therefore;
The 4th graphic does not depicts ∆ABC inscribed in sphere P
Learn more about inscribed and circumscribed figures here:
https://brainly.com/question/4619495
#SPJ1
A researcher wishes to conduct a study of the color preferences of new car buyers. Suppose that 60% of this population prefers the color green. If 12 buyers are randomly selected, what is the probability that exactly 9 buyers would prefer green
The probability that exactly 9 buyers would prefer green is 0.1408
We will use the Binomial probability formula to find the answer
The formula is given by ⁿCₓ (p)ˣ (1-p)ⁿ-ˣ
We have
n, the number of trial = 12
x, the sample we aim to try = 9
p, the probability of success = 0.6
Substitute these values into the formula
[tex]P(9)= ^{12}C_{9} (0.6)^{9} (1-0.6)^{12-9}[/tex]
P(9) = 0.1408 (rounded to four decimal places)
Hence, The probability that exactly 9 buyers would prefer green is 0.1408
Learn more about Probability here https://brainly.com/question/23286309
#SPJ4
If there are 300 cars and 80 of them are black, what percent of the cars are black
The percentage of cars that are black when 80 cars of 300 cars are black is 26.67 or 26 2/3 %.
The percentage is similar to the fractional representation of quantities, where the quantity is shown as a part of the whole, but here the whole is fixed to be 100.
To derive a percentage in fractional form, we divide it by 100.
To derive a fractional form in percentage, we multiply it by 100.
In the question, we are given that 80 cars of 300 cars are black.
We are asked the percentage of cars that are black.
The fraction representing black cars of whole cars can be shown as 80/300 = 4/15.
To convert this into a percentage, we multiply it by 100.
Thus, the percentage of cars that are black = 4/15 * 100% = 80/3% = 26 2/3% = 26.67%.
Thus, the percentage of cars that are black when 80 cars of 300 cars are black is 26.67 or 26 2/3 %.
Learn more about percentages at
https://brainly.com/question/843074
#SPJ4
In the figure, PQ || SR, PS 1 PQ and SR, and QR 1 PQ and SR.
SR¸
P
R
Which statement describes a relationship between angles in the figure?
Om XPQR = m XPSR ÷ 2
m XPQR = m }TQR : 2
m XSRU = m PQT x 2
O
S
O
O
m XSRU = m XQPS × 2
Ug
The statement that best describes a relationship between angles in the figure is option d: m SRU = m QPS x 2.
What is the angle about?In Geometry, an angle is known to be any figure is is created by two rays or lines that is said to have a common endpoint known as an angle.
Note that:
An angle on a straight line is 180 degrees.A right angle is 90 degrees.From the diagram, angle QPS is right angle and angle SRU is an angle on a straight line.
Therefore:
= QPS x 2
= 90 x 2
= 180 degrees
Angle SRU = 180 degrees
Therefore, The statement that best describes a relationship between angles in the figure is option d: m SRU = m QPS x 2.
Learn more about angles from
https://brainly.com/question/25716982
#SPJ1
Answer:
Step-by-step explanation:
I can't seem to figure this out
Answer:
50
Step-by-step explanation:
→ Evaluate n as 1, 2, 3 and 4 in 5n
5, 10, 15 and 20
→ Find the sum of these numbers
5 + 10 + 15 + 20 = 50
The tables represent two linear functions. The equation represented by the first table is given below.
y = 5.75x + 34.5
What linear equation is represented by the second table?
What is the solution to the system of equations?
The linear equation is represented by the second table as y= -2 .5 x-15 and the solution to the system of equations is (-6, 0).
What is the linear functions about?First, take two point from the table and as such it will be:
P (-4, -5) and Q(-2, -10)
So the two point is used to create a straight line and as such it will be:
y - y₁ = y₂ - y₁/ x₂ - x₁ (x₁-x )
y -(-5) = [tex]\frac{-10-(-5)}{-2-(-4)}[/tex] (x -(-4))
y + 5 = [tex]\frac{-5}{2}[/tex] x +4
y + 5 = [tex]\frac{-5}{2}[/tex] x - 10
y = [tex]\frac{-5}{2}[/tex] x - 15
y= -2 .5 x-15
The linear equation is represented by the second table as y= -2 .5 x-15 and the solution to the system of equations is (-6, 0)
Learn more about linear functions from
https://brainly.com/question/15602982
#SPJ1
Answer:
1st one option A to lazy to right out location
2nd one -6,0
Step-by-step explanation:
2. Find the value of root4 (81)-2
Step-by-step explanation:
[tex]\sqrt[4]{81} -2\\=3-2 \\=1[/tex]
Solve the inequality.
-1.5(4x+1) ≥ 45-25(x+1)
Answer:
x ≥ 21.5/19
Step-by-step explanation:
-1.5(4x + 1) ≥ 45 - 25(x + 1)
-6x - 1.5 ≥ 45 - 25x - 25
-6x + 25x ≥ 45 - 25 + 1.5
19x ≥ 21.5
x ≥ 21.5/19
What is the slope of a line that is parallel to the line y= 3/4 x + 2?
Answer:
Using the slope-intercept form, the slope is 34 . All lines that are parallel to y=3x4+2 y = 3 x 4 + 2 have the same slope of 34 .
Step-by-step explanation:
3/4
Step-by-step explanation:The slope of a line describes the steepness of a line, as well as the direction.
Slope-Intercept Form
To answer the question, we first need to find the slope of the original line. This line is represented in the slope-intercept form, which is y=mx+b.
In this formula, m is the slope.So, using this information we can say that the slope is 3/4.
Parallel Lines
Parallel lines are 2 lines that will never intersect. You can tell if 2 lines are parallel by their slopes. All parallel lines have equal slopes.
This means that the slope of a line parallel to y = 3/4x + 2 must be 3/4 as well.
Volume=
What is the volume?
Help please
Answer: 360
Step-by-step explanation:
The area of the bottom square is 100.
The area of each of the four triangular faces is 65.
Adding these together, we get 65(4) + 100 = 360.
Given that A varies directly as B and inversely as C and that; A=12 when B=3 and C=2. Find B when A=10 and C=1.5
1.9
Step-by-step explanation:
The above is direct and inverse variation.A = kB/C -----------(1)
A=12
B = 3
C= 2
substitute A, B and C into equation (1).
12 = K × 3/2
12 = 3k/2
12×2 = 3k
3K = 24
dividing bothsides by 3
3K/3 = 24/3
K = 8
substitute K = 8 into equation (1)
A = 8B /C --------------(2)
Equation (2) is the equation connecting
A,B and C.
Finding B when A = 10 and C = 1.5
10 = 8B / 1.5
10× 1.5 = 8B
15 = 8B
Dividing bothsides by 8 :
B = 15/8
B = 1.875
B = 1. 9 ( approximately)
A physics class has 40 students. of these, 15 students are physics majors and 16 students are female. of the physics majors, six are females. find the probability that a randomly selected student is female or a physics major
The probability that the randomly selected student is female or Physics major is 0.625.
Given Information
Total number of students = 40
Number of Physics major out of the total students, P = 15
Number of females in the class, F = 16
Number of females that are Physics major, (P∩F) = 6
We have to find the probability P(P∪F).
Calculating the Probability
Probability of Physics major students, P(P) = 15/40
= 0.375
Probability of female students, P(F) = 16/40
= 0.4
Probability of female students who are Physics major, P(P∩F) = 6/40
= 0.15
Since, we know that,
P(P∪F) = P(P) + P(F) - P(P∩F)
∴ P(P∪F) = 0.375 + 0.4 - 0.15
P(P∪F) = 0.625
Thus, the probability that the randomly selected student will be a Physics major or a female is 0.625
Learn more about probability here:
https://brainly.com/question/11234923
#SPJ4
the ratio of boys to girls in the 9th grade is 7 to 9 there are 218 girls set up the proportion to model this information
Answer:
the answer will be equal to x= 1962 over 7
Find the area of the figure to the nearest square unit
Answer:
357 mi²
Step-by-step explanation:
A = LW + 0.5πr²
A = (10 × 20 + 0.5 × 3.14159 × 10²) mi²
A = (10 × 20 + 0.5 × 3.14159 × 10²) mi²
A = 357 mi²
What is the inverse of this function?
Step-by-step explanation:
f(x) = y = -1/2 × sqrt(x + 3), x >= -3
-2y = sqrt(x + 3)
4y² = x + 3
x = 4y² - 3
and now we need to rename x to y and y to x to make it a "normal" function :
y = 4x² - 3
since in the original function x >= -3, this gave us y <=0.
and therefore (remember the x of the inverse function actually stands for the y of the original function) the limit for the inverse function is x <= 0.
so, again, the full answer is
f^-1(x) = 4x² - 3, x <= 0
How to find minimum and maximum of this equation.
Using it's vertex, the maximum value of the quadratic function is -3.19.
What is the vertex of a quadratic equation?A quadratic equation is modeled by:
[tex]y = ax^2 + bx + c[/tex]
The vertex is given by:
[tex](x_v, y_v)[/tex]
In which:
[tex]x_v = -\frac{b}{2a}[/tex][tex]y_v = -\frac{b^2 - 4ac}{4a}[/tex]Considering the coefficient a, we have that:
If a < 0, the vertex is a maximum point.If a > 0, the vertex is a minimum point.In this problem, the equation is:
y + 4 = -x² + 1.8x
In standard format:
y = -x² + 1.8x - 4.
The coefficients are a = -1 < 0, b = 1.8, c = -4, hence the maximum value is:
[tex]y_v = -\frac{1.8^2 - 4(-1)(-4)}{4(-1)} = -3.19[/tex]
More can be learned about the vertex of a quadratic function at https://brainly.com/question/24737967
#SPJ1
WILL MARK YOUR ANSWER AS BRAINLIEST how do I do this
By the definition of a rectangle, JML and KLM are right angles.
How to explain the information?From the information given, JKLM is a rectangle based on the definition as the opposite sides are equal.
Also, JML and KLM will be 90° since they're right angles. The opposite sides of a rectangle are congruent and equal.
Learn more about rectangles on:
brainly.com/question/25292087
#SPJ1
Where would the line go??? Please help asap!!
Answer: Draw a line through (0,5) and (1,2)
The graph is shown below.
=====================================================
Reason:
The equation y = -3x+5 is in the form y = mx+b
m = -3 = slope
b = 5 = y intercept
The y intercept is where the graph crosses the y axis. In this case, it's at (0,5). This is one point needed.
Another point can be found by going down 3 and to the right 1 to arrive at (1,2). The motion "down 3, right 1" is from the slope of -3/1.
Therefore, this line goes through (0,5) and (1,2)
-------------
Another approach:
Plug in x = 0 to get...
y = -3x+5
y = -3(0) + 5
y = 5
The input x = 0 leads to the output y = 5
This tells us the point (x,y) = (0,5) is on the line.
Repeat for x = 1
y = -3x+5
y = -3(1)+5
y = 2
So (1,2) is another point on the line.
-------------
Check out the graph below.
Step-by-step explanation:
[tex]y=-3x+5.\\[/tex]
x | 0 | 1 |
y | 5 | 2 |
is y= -1/2x +25 linear???
What is the √81 x √144….?
(square root of 81 X square root of 144)
Answer:
108
Step-by-step explanation:
First evaluate both the squares separately, because combining the two within the sqrt symbol would result in a large number(harder to deal with).
sqrt81 = 9 (because 9*9=81)
sqrt144 = 12 (because 12*12=144)
Then multiply.
9*12 = 108