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Maru [420]
3 years ago
14

A student council sold 856 copies of a school yearbook, four fifths of the students at the school bought a copy , how many stude

nts did not buy a yearbook
Mathematics
1 answer:
kumpel [21]3 years ago
8 0

Answer:

I am guessing about 150 - 200 students did not buy a yearbook.

Step-by-step explanation:

First let's assume that there are 1,000 or so students in the school. 856 would be a little over 4/5 of 1,000 just as 8 would be 4/5 of 10.

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Jobisdone [24]

Answer:

100% of 180 = 180

25% of 180 = 45

-75% of 180 = -135

37.5% of 180 = 67.5

Step-by-step explanation:

I looked them up on an app so I hope its right!

4 0
3 years ago
Two opposite sides of a parallelogram are 3x-8 and 10x+13. Find the measure of all sides
RSB [31]

Answer:

Step-by-step explanation:

Using the parallelogram theorem

3x-8 = 10x+13

-7x = 21

x = -3

Substitute

3(-3) - 8

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10(-3) + 13

-17

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3 years ago
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Answer:

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Step-by-step explanation:

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5 0
2 years ago
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maksim [4K]

Answer:

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7 0
3 years ago
Find three consecutive even integers if three times the first integer is two times the third.​
drek231 [11]

Using a system of equations, it is found that the three consecutive even integers are -8, -6 and -4.

<h3>What is a system of equations?</h3>

A system of equations is when two or more variables are related, and equations are built to find the values of each variable.

In this problem, the three consecutive even integers are represented by:

n, n + 2, n + 4

The first integer is two times the third, hence:

n = 2(n + 4)

2n + 8 = n

n = -8

Thus:

n = -8

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n + 4 = -8 + 4 = -4

The integers are -8, -6 and -4.

To learn more about system of equations, you can take a look at brainly.com/question/26650649

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2 years ago
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