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klasskru [66]
3 years ago
15

In science class, the girl to boy ratio is 3 to 7.

Mathematics
2 answers:
gogolik [260]3 years ago
8 0
I would say that there are 29 boys in the class.
Yuki888 [10]3 years ago
3 0

Answer:

There are 35 boys in the class.

Step-by-step explanation:

This question can be solved as a rule of three.

In science class, the girl to boy ratio is 3 to 7.

This means that for each 10 students, 7 of them are boys and 3 are girls.

So if for 10 students, 7 of them are boys, how many are boys for 50?

7 boys - 10 students

x boys - 50 students

10x = 7*50

10x = 350

x = 35

There are 35 boys in the class.

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which set of steps shows the solution to the equation 2y = −8? y = −8 − 2; y = 6 y = −8 ÷ (−2); y = 4 y = −8 ÷ 2; y = −4 y = −8
xz_007 [3.2K]

Answer:  The correct option is

(C) y = −8 ÷ 2; y = −4.

Step-by-step explanation:  We are given to select the correct steps that shows the solution to the following equation :

2y=-8~~~~~~~~~~~~~~~~~~~~~~~~~~(i)

We know that

the solution to the equation ax=b,~~\textup{a,b are real numbers} is given by

ax=b\\\\\Rightarrow x=b\div a.

Therefore, the solution of equation (i) is as follows :

2y=-8\\\\\Rightarrow y=-8\div 2\\\\\Rightarrow y=\dfrac{-8}{2}\\\\\Rightarrow y=-4.

Thus, (C) is the correct option.

6 0
3 years ago
Which equation has the same graph as 4x + 8y = 12?
Nutka1998 [239]

Answer:

4x + 8y = 12  \\ 4(x + 2y) = 12 \\  \frac{4(x + 2y)}{4}  =  \frac{12}{4}  \\ x + 2y = 3

8 0
3 years ago
Write an equivalent expression of -2(1.5h+5)-4(-0.5+3h) without parenthesis
ryzh [129]

The equivalent expression to given expression is: -15h-8

Step-by-step explanation:

We can simplify the given expression to find an equivalent expression.

Given expression is:

-2(1.5h+5)-4(-0.5+3h)

So by using distributive property

=-3h-10+2-12h\\=-15h-8

Hence,

The equivalent expression to given expression is: -15h-8

Keywords: Equivalent expressions, Polynomials

Learn more about polynomials at:

  • brainly.com/question/10552347
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#LearnwithBrainly

8 0
3 years ago
In two or more complete sentences explain how you would set up and solve the following equation: Peter opened his account with $
Lilit [14]
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4 0
3 years ago
Yoda soda is the intergalacatic party drink .You are throwing a party and you need 5 liters of Yoda soda for 12 guest. If you ha
aksik [14]

Answer:

15 liters

Step-by-step explanation:

Given:

We need 5 liters of Yoda soda for 12 guest.

To find:

If we have 36 guest how many liters of Yoda soda we need.

Solution:

<u>By unitary method:</u>

For 12 guests, we need liters of Yoda soda = 5

For 1 guest, we need liters of Yoda soda = \frac{5}{12}

For 36 guests, we need liters of Yoda soda = \frac{5}{12}\times36=\frac{180}{12} =15\ liters

Therefore, we need 15 liters of Yoda soda for 36 guests.

7 0
3 years ago
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