Oliver interviewed 30% of the 9th grade class and 70% of the 10th grade class at his school. Jenny interviewed 75% of the 9th grade class and 25% of the 10th grade class at the same school. Oliver interviewed a total of 176 students and Jenny interviewed 140 students.

A. 36
B. 80
C. 120
D. 200

Answers

Answer 1

Answer:

A. 36

Step-by-step explanation:

We are given a total of 176 interviewed by Oliver and a total of 140 interviewed by Jenny. To find how many more 10th graders than 9th graders were interviewed, subtract the totals given

176 - 140 = 36

This is how we came to the answer:

We are given 70% of the 10th-grade and 30% of the 9th-grade with a total of 176 for Oliver.

While we're given 75% of the 9th-grade class and 25% of the 10th-grade with a total of 140 interviewed by Jenny

Oliver's Interviewees

10-graders

Firstly, let's find what the number of 9th-graders was interviewed by Oliver; find the percentage of the 9th-graders by the total;

70% of 176 =

Cross multiply

123.2 were 10-graders interviewed by Oliver

9th-graders

Now, to find the number of 9th-graders was interviewed by Oliver; find the percentage of the 9th-graders by the total;

30% of 176 =

 

Cross multiply

52.8 were 9th-graders interviewed by Oliver

Jenny's Interviewees

9th-graders

Firstly, let's find what the number of 9th-graders was interviewed by Jenney; find the percentage of the 9th-graders by the total;

75% of 140 =

 

Cross multiply

105 students were 9th-graders interviewed by Jenney.

10th-graders

Now, to find the number of 10th-graders was interviewed by Jenney; find the percentage of the 10th-graders by the total;

25% of 140 =  

 

Cross multiply  

35 students were 10th-graders interviewed by Jenney.  

Total calculation

Use the results and sum them up by 9th-grade plus 9th-grade and 10th-grade plus 10-grade. Then subtract the amount gotten from 9th-grade away from the amount gotten from 10th-grade;

Oliver's 9th-grade = 52.8

Jenny's 9th-grade = 105

105 + 52.8 = 157.8

Oliver's 10th-grade = 123.2

Jenny's 10th-grade = 35

123.2 + 35 = 158.2

Total calculation: 158. 2 - 157.8 = 0.4

Therefore, there are 36 more 10th than 9th.

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Related Questions

Shaughn has 36 bottles of soda.
Each bottle holds 20 ounces of soda.
Shaughn will use 15-ounce paper cups to serve the soda.
How many paper cups will he need to hold

PLEASE ANSWER THIS! BYE

Answers

Answer:

48 cups will be needed thank you

Guided Practice


Carlos believes that the grade he receives on his math test is directly related to the amount of hours he spends studying. The equation y=12x+50y equals 12 x plus 50 represents the percentage grade he thinks he will earn, where y is the percentage grade and x is the number of hours that he spends studying. What does the y-intercept in his equation represent?


A.
For each hour Carlos spends studying, his grade will improve by 12%.


B.
Carlos will spend 50 hours studying for his math test.


C.
If Carlos doesn’t study at all, his grade will be 50%.

Answers

Answer:

C.

If Carlos doesn’t study at all, his grade will be 50%.

Step-by-step explanation:

If Carlos doesn’t study at all, his grade will be 50%.

Check Answer

Correct. If Carlos spends 0 hours studying, his grade will be 50%.

A sloth walks 1/8 mile in 1/4 of an hour. Enter the number of miles the sloth will walk in an hour

Answers

Answer:

1/2 mile.

Step-by-step explanation:

There 4 1/4 hours in 1 hour so

the answer is 4 * 1/8

= 4/8

= 1/2 mile.

John claims that Point X = – 4, and Point Y = 2. Which of the following statements provide support for John's claim? Select three that apply. X < Y because X is left of Y X > Y because X is left of Y X < 0 because X is left of zero Y < 0 because Y is right of zero X > 0 because X is left of zero Y > 0 because Y is right of zero

Answers

Answer: X<Y, X>0

Because -4 is less than 0 and -4 is greater than 0

Help please I NEED TO PASS :(((((

Answers

Answer:

The answer should be C

Step-by-step explanation:

I just got done calculating it and according to my calculations it should be C

Fill in the missing values.

Answers

77.86
117.68
57.75
47.73
47.13
88.23
67.60
34.98

Solve for x please help me

Answers

Answer:

4

Step-by-step explanation:

By intersecting chords theorem:

[tex]12x = 3(x + 12) \\ \\ 12x = 3x + 36 \\ \\ 12x - 3x = 36 \\ \\ 9x = 36 \\ \\ x = \frac{36}{9} \\ \\ x = 4[/tex]

no one ever answers my questions but please I'm begging you to please help me I'm giving away so many points please

Answers

Answer:

I think 3.

Step-by-step explanation:

You make a right triangle, an isosceles, and a scalene. You can't make an equilateral, because those sidelengths are not the same size.

Answer:

Step-by-step explanation:

make the other half of the triangle on top one and then you make another triangle out of the bottom one and make the other half so you just want to put  a line from one line on the right side to the bottom line so then you just need  do the same thing on the left side

One year, the population of a city was 397,000. Several years later it was 412,880.
Find the percent increase.

Answers

The percentage increase from the initial population of 397,000 to 412,880 is 4%

How to determine the percentage increase?

From the question, we have the following numbers:

397,000 and 412,880.

The numbers are increments from 397,000 to 412,880.

The percentage increase is calculated as:

%Percentage = (Old number - New number)/Old Number

Substitute the numbers in the above equation

%Percentage = (412880 - 397000)/397000

Evaluate the difference

%Percentage = 15880/397000

Evaluate the quotient

%Percentage = 0.04

Express 0.04 as percentage

%Percentage = 4%

Hence, the percentage increase from the initial population of 397,000 to 412,880 is 4%

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What point lies in quadrant III

Answers

Answer:

(-3,-5)

Step-by-step explanation:

Quadrant III is on the bottom left corner.

Whici expression could be used to represent 2/3

Answers

Answer:epression could be used to represent 2/3

1/2

1/3

1/3

What is the volume of this rectangular prism?


Answers

Answer:

20

Step-by-step explanation:

volume: lwh

.666*5*6=20

Answer:

20 cm³

Step-by-step explanation:

[tex]\frac{2}{3}[/tex] · 6 · 5

[tex]\frac{2}{3}[/tex] · 30

20 cm³

DUE IN 30 MINUTES PLEASE SHOW FULL WORK :[

Answers

Answer:

-3x^2√21x * 5x^2√3x

Step-by-step explanation:

-3x√21x^3 * 5x√3x^3

-3x^2√21x * 5x^2√3x


i need help pls i dont understand this

Answers

Answer:

D

Step-by-step explanation:

It catches fire at or above. so greater than or equal to. so D

The equation of the line that goes through the points ( − 3 , − 9 ) and ( − 6 , − 3 ) can be written in the form y = m x + b

Answers

Answer:

[tex]y=-2x-15[/tex]

Step-by-step explanation:

[tex]y=mx+b[/tex].

m is the slope of the line. To find it we can do [tex]\frac{dy}{dx}[/tex] which is the difference between the y-coordinates divided by the difference between the x-coordinates.

So: [tex]\frac{dy}{dx} =\frac{-9-(-3)}{-3-(-6)} =\frac{-6}{3} =-2[/tex]. Now we have the slope, let's input a set of coordinates into the equation so that we can find the constant [tex]b[/tex].

[tex]-9=-2(-3)+b[/tex]

[tex]b=-15[/tex] - Re-arranging to get b

Now re-write the equation as we have the constants.

[tex]y=-2x-15[/tex]

Refer to the isosceles trapezoid shown. Find x

Answers

Answer:

Hey, read below!! :)

Step-by-step explanation:

Both sides are the same length. X = 70

Which exponential expressions are equivalent to the one below? Check all that apply. ​

Answers

Answer: The answer is B,C, and D

Step-by-step explanation:

Are the following figures similar?

Answers

Answer:

well the shape is same but the measurements are different

Step-by-step explanation:

1 cm - 125 miles
3. The distance between Point
A and Point B on a printed
map of Texas is 3.3 cm. Use
the map key to find the
actual distance in miles
between Point A and Point B.
3.3 cm
Record your answer and fill in
the bubbles below. Be sure to
use the correct place value.


Answers

Answer:

412.5

Step-by-step explanation:

If 1cm = 125 miles, then 3.3cm = 412.5

??????????????????????

Answers

Answer:

Sorry, I don't speak confusion.

Step-by-step explanation:

The expression 4x/5 - 2x/3 is equivalent to

a. x/2

b. x/5

c. x/15

d. 2x/15

Answers

Answer:

answer is d

Step-by-step explanation:

hope it helps!!!

the answer is D = 2x/15

Please someone help

Answers

Answer:

314.2

Step-by-step explanation:

Circumference of a circle is π[tex]r{2}[/tex]

so 3.142 × [tex]10{2}[/tex]=314.2

Answer:

circumference of the circle=2πr

=2×3.142×10

=62.84 cm

Find the perimeter. Simplify your answer.

Answers

Answer:

The third one, 2c - 6

Step-by-step explanation:

Solve the quadratic equation below: 4x^2 -100=0

Answers

Answer:

solution given:

4x^2 -100=0

4x²=10²

(2x)²=10²so

2x=±10

x=±10/2

so

x=5

or x=-5

Answer:

The answer is x=-5

Step-by-step explanation:

The freezing point of neon is about -249c . The freezing point of chorine is about 148c higher. What is the approximate freezing point of chlorine?

Answers

Answer:

-101 c.

Step-by-step explanation:

-249 + 148

= -(249 - 148)

= -101 C.

The approximate freezing point of chlorine is -101°C.

We have,

The freezing point of neon is about -249c .

The freezing point of chorine is about 148c higher.

To find the approximate freezing point of chlorine, we add 148°C to the freezing point of neon:

= -249°C + 148°C

= -101°C

Therefore, the approximate freezing point of chlorine is -101°C.

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1 of 6
Given that a = 3.5 cm and b = 9.4 cm, work out the perimeter of the triangle.
Give your answer rounded to 1 DP.
a
b
The diagram is not drawn accurately.

Answers

Answer: 23 cm

Step-by-step explanation:

Given

[tex]a=3.5\ cm\\b=9.4\ cm[/tex]

Triangle in the figure is right-angled triangle. Therefore, Pythagoras theorem can be applied. Suppose the unknow length of the triangle is x

[tex]\Rightarrow x^2=a^2+b^2\\\Rightarrow x^2=3.5^2+9.4^2\\\Rightarrow x^2=12.25+88.36\\\Rightarrow x^2=100.61\\\Rightarrow x=10.03\ cm[/tex]

The perimeter of triangle is the sum of the lengths of sides.

[tex]\text{Perimeter }P=3.5+9.4+10.03\\\Rightarrow P=22.93\ cm\approx 23\ cm[/tex]

PLEASE PLEASE PLEASE HELP MEE!!!!!!!!!!!!!!!!
ALL LINKS WILL BE REPORTED!!!!
Triangle ABC has vertices A (0, 2), B (5, 4), and C (5, 0). Triangle A′B′C′ has corresponding vertices A′ (–5, –1), B′ (0, 1), and C′ (0, –3). Which of the following describes a translation that would produce triangle A′B′C′ from the pre-image of triangle ABC?
Answer options:
A) To the right five units, down three units.
B) To the right five units, up three units.
C) To the left five units, down three units.
D) To the left five units, up three units.

Answers

Answer:

It is C

Step-by-step explanation:

What shape is this???

Answers

Answer:

It is a quadrilateral! Note the four sides, angles, and vertices.

Step-by-step explanation:

Confoosed bab here please help ☹️

Answers

Answer: it should be 565.5

Step-by-step explanation:

Answer: the volume would be 565.49 rounded 565.5

Step-by-step explanation:

trust i plugged it into a cylinder calculator

simplify the expression (4x^9 y^3) (-5x^6) (-3y^2)

Answers

Answer:

60x^15y^5

Step-by-step explanation:

60x to the power of 15 times y to the power of 5

Hope this helps!

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