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Keith_Richards [23]
2 years ago
6

Which system of equation should you use to solve this problem

Mathematics
1 answer:
Alex17521 [72]2 years ago
4 0

Last option is the correct answer.

Step-by-step explanation:

Given that

Let x stand for the solution a and y stand for the solution B

So,

According to statement that

30 gallons have to be made

x+y=30

Solution A contains 29 percent bromine => 0.29x

Solution B contains 53 percent  =>0.53y

And the mixture of 30 gallons contains 45% bromine

0.29x+0.53y=30*0.45\\0.29x+0.53y=13.5

Following equations will be used for solving the problem

x+y = 30\\0.29x+0.53y=13.5

Hence,

Last option is the correct answer.

Keywords: Equations, Variables

Learn more about linear equations at:

  • brainly.com/question/10941043
  • brainly.com/question/10978510

#LearnwithBrainly

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be rectangular prism and rectangular pyramid have the same volume. determine the value of x, the height of the pyramid.
Marina CMI [18]
ANSWER

x= 9 \: in

EXPLANATION

The volume of a rectangular prism is given by the formula,

V = l \times b \times h
We substitute the dimensions to obtain,

V = 6 \times 3 \times 12 \: {in}^{3}

The volume of the rectangular pyramid is,

V = \frac{1}{3} \times 6 \times 12 \times x \: {in}^{3}

Equating the two volumes gives,

\frac{1}{3} \times 6 \times 12 \times x = 6 \times 3 \times 12

We divide through by 6×12 to get,

\frac{x}{3}=3

We solve for x to obtain,

x = 3 \times 3

x = 9 \: in
7 0
2 years ago
I need help with this please help its confusing me.
olga_2 [115]

Answer:

56 oz I think.

3 0
2 years ago
Find the percent change
tatuchka [14]

Answer:

THE answer is 4% because u divide

5 0
3 years ago
Choose the correct description of the graph of the compound inequality: (5 points)
skad [1K]

Answer:

D

Step-by-step explanation:

Firstly,  

≤  or  ≥  means closed circle, and

<   or >  means open circle

Now, let's solve the compound inequality:

x - 1 ≤ 7

x ≤ 8

and

2x ≥ 22

x ≥ 11

This solution means "everything left of 8 (inclusive and closed circle)" and "everything right of 11 (inclusive and closed circle)"

Looking at the choices, D is right.

4 0
3 years ago
After reading a low of -16°F at 10 P.M.,
Rus_ich [418]
The temperature would be -7 degrees
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Read 2 more answers
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