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3 years ago

10

A class survey showed 8 out of 25 students had plans to travel over spring break.how many student out of the 400 students in the

entire school would you expect to be traveling over spring break?

2 answers:

Airida [17]3 years ago

4 0

Divide 400 by 25. You get 16. Multiply 16 by 8. You get 128.

Nataly [62]3 years ago

3 0

Use ratio and proportion:
$\frac{8}{25}=\frac{x}{400}$

$3200=25x$

$\frac{3200}{25}=\frac{25x}{25}$

$128=x$

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olya-2409 [2.1K]

Here's the solutions :

1. solve for a :

$4a = 20$

$a = \dfrac{20}{4}$

$a = 5$

2. solve for y :

$3y + 9 = 24$

$3y = 24 - 9$

$3y = 15$

$y = \dfrac{15}{3}$

$y = 5$

3. solve for y :

$\dfrac{y}{3} - 5 = 4$

$\dfrac{y}{3} = 5 + 4$

$\dfrac{y}{3} = 9$

$y = 9 \times 3$

$y = 27$

4. solve for k :

$3 = 9 - 4k$

$3 - 9 = -4 k$

$- 6 = - 4 k$

$k = \dfrac{ - 6}{ - 4}$

$k = \dfrac{3}{2} \: \: \: or \: \: 1.5$

5. there's something wrong with this question.

6. solve for x :

$3x + 8 = 2$

$3x = 2 - 8$

$3x = - 6$

$x = \dfrac{ - 6}{3}$

$x = - 2$

i hope it helped...

6 0

2 years ago

Read 2 more answers

What does-25=1/3n-10 equal

Nutka1998 [239]

Answer:

-45

Step-by-step explanation:

add 10 to -25, then divide 1/3 to that answer, which is -15. and you get -45

6 0

3 years ago

Read 2 more answers

Somebody help me please

anastassius [24]

Answer:

$-19$

Step-by-step explanation:

$-6-10=-16\\=-3-16\\=-19$

8 0

2 years ago

Solve for m 4=m+4 :) what does m = ?

Maslowich

Answer:

8

Step-by-step explanation:

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2 years ago

What is the result when the number 86 is decreased by 9%?

Vikki [24]

78.26

Hope this helps!!!

6 0

3 years ago