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salantis [7]
3 years ago
6

I really need help with number 12

Mathematics
1 answer:
Usimov [2.4K]3 years ago
5 0

Answer:

7.8125 gallons

Step-by-step explanation:

Because 5 gallons would cover 1600 square-foot wall so 1 gallon would cover:

1600 / 5 = 320 square-foot wall.

So to cover 2500 square foot-wall, we need in total of:

2500 / 320 = 7.8125 gallons of paint

Hope this can help you :3

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Sergio [31]

Given:

The functions are:

f(x)=|3x-5|+7x

g(x)=-2x+9

To find:

The function (f+g)(x).

Solution:

We have,

f(x)=|3x-5|+7x

g(x)=-2x+9

We know that,

(f+g)(x)=f(x)+g(x)

On substituting the values of given functions, we get

(f+g)(x)=|3x-5|+7x+(-2x+9)

(f+g)(x)=|3x-5|+7x-2x+9

(f+g)(x)=|3x-5|+5x+9

Therefore, the required function is (f+g)(x)=|3x-5|+5x+9.

7 0
3 years ago
What number squared equals 1.5
Stolb23 [73]
You have to find out what is the square root of 1.5 is which is <span>1.22474487139 by calculator to make sure of this, do answer squared and you will get 1.5</span>
8 0
3 years ago
Read 2 more answers
Find the equation of the line with slope 3/7 and that passes through the point (14, 0). Write your answer in the form y = mx + b
Allushta [10]

Answer:

y = 3/7x - 6

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Order of Operations: BPEMDAS
  • Equality Properties

<u>Algebra I</u>

Slope-Intercept Form: y = mx + b

  • m - slope
  • b - y-intercept

Step-by-step explanation:

<u>Step 1: Define</u>

Slope <em>m</em> = 3/7

Point (14, 0)

<u>Step 2: Find y-intercept </u><em><u>b</u></em>

  1. Substitute:                    0 = 3/7(14) + b
  2. Multiply:                        0 = 6 + b
  3. Isolate <em>b</em>:                       -6 = b
  4. Rewrite:                         b = -6

<u>Step 3: Write linear equation</u>

y = 3/7x - 6

7 0
3 years ago
Round 14.857 to the nearest tenth. A. 15.0 B. 14.8 C. 14.9 D. 10.0
LenKa [72]
C. 14.9  because the second number is 5 so you drop the seven and the 5 and round the 8 up to 9
5 0
3 years ago
Read 2 more answers
Solve for x<br> 4(1 - x) + 2x = -3 (x + 1)
Blababa [14]

Answer:

x = -7

Step-by-step explanation:

4(1 - x) + 2x = -3 (x + 1)

4 - 4x + 2x = - 3x - 3

- 4x + 2x + 3x = - 3 - 4

x = -7

8 0
3 years ago
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