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xz_007 [3.2K]
2 years ago
15

Collins Middle School has 240 sixth grade students. If the sixth grade is 30% of the total school, how many students are in the

middle school?
270
210
72
800

BRAINLIST, EXTRA POINTS,FIVE STARS, AND A HEART

PLEASE HELP!
Mathematics
1 answer:
Masteriza [31]2 years ago
6 0

Answer:

800

Step-by-step explanation:

We can set up a proportion using the information we are given. We know that 240 students corresponds to 30% and that the total number of students, x, corresponds to 100%

\frac{240}{x} = \frac{30}{100}

Cross multiply and solve:

240 * 100 = 30x

24000 = 30x

800 = x

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5 0
2 years ago
3x+7y=76<br> 9y+5y=108<br> find x<br> find y
klemol [59]

In the given system of equations, the value of x is 7.334 and the value of y is 7.714

<h3>Solving system of linear equations</h3>

From the question, we are to solve the given system of linear equations

The given system of linear equations is

3x + 7y = 76               ------------ (1)

9y + 5y = 108             ------------ (2)

From equation (2), solve for y

9y+ 5y = 108

14y = 108

y = 108/14

y = 7.714

Substitute the value of x into equation (1), to determine the value of x

3x + 7y = 76

3x + 7(7.714) = 76

3x + 53.998 = 76

Subtract 53.998 from both sides of the equation

3x + 53.998 - 53.998  = 76 - 53.998

3x = 22.002

Divide both sides of the equation by 3

3x/3 = 22.002/3

x = 7.334

Therefore,

x = 7.334 and y = 7.714

Learn more on Solving system of linear equations here: brainly.com/question/13729904

#SPJ1

8 0
1 year ago
How long will it take 680 dollars to earn 102 dollars in simple interest at an annual interest rate of 3%? Show your work in an
jenyasd209 [6]
Simple interest is where 3% of the original value is added on each year

goal number = $102

original number = $680
3% of $680 can be found by getting 1% and multiplying by 3
100% = original number = $680
100% / 100 = 1% so $680 / 100 = $6.80 = 1%
3% = $6.80 * 3 = $20.40

so each year the money rises by $20.40

to find out how many years it would take to get to $102:
$102 / $20.40 = 5 years


5 0
3 years ago
PLEASE HELP ME ASAP THIS IS A EXAM
Alexxx [7]

Answer:

Can't help if its an exam, check the honor code.

5 0
2 years ago
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