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mestny [16]
4 years ago
15

Need help is confused​

Mathematics
1 answer:
Afina-wow [57]4 years ago
3 0

Answer: a = 3.6

<u>Step-by-step explanation:</u>

\dfrac{2}{3}(6a+9)=20.4\\\\\\\text{Distribute the }\dfrac{2}{3}\ \text{by multiplying it by each term in the parenthesis:}\\\dfrac{2}{3}(6a)+\dfrac{2}{3}(9)=20.4\\\\\\\text{Cancel out common terms then Multiply:}\\2(2a)+2(3)=20.4\\4a+6=20.4\\\\\text{Subtract 6 from both sides:}\\4a=14.4\\\\\text{Divide both sides by 4:}\\a=3.6

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67.65 ÷ 13.7 = 4.94. A. Yes. B. No; 7.41. please show work
Bess [88]
Yeah, it equals 4.94 so the answer is A. yes

8 0
3 years ago
Y=5x-4y = 5 x − 4<br><br> y=-x+2
Nadya [2.5K]

Answer:

Y= x+2 " substituting value of y

Step-by-step explanation:

Y=5x-4y = 5x - 4

or, 5x - 4(x+2) = 5x - 4

or, 5x - 4x+ 8 = 5x-4

or, x +8 = 5x - 4

or, 0= 5x - x - 4-8

or, 0= 4x - 12

5 0
3 years ago
Write 3x 1/2 in radical form
stiv31 [10]

Answer:

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\sqrt{3x}

Hope this helps you

8 0
4 years ago
The base of a right rectangular prism has an area of 84.6 square centimeters and a height of 7 centimeters. What is the volume,
AlladinOne [14]

Answer:

The volume of the right rectangular prism is  592.2cm³

Step-by-step explanation:

To calculate the volume of a rectangular prism we have to multiply the area of ​​the base by the height

a = area of the base = 84.6cm²

h = height = 7cm

v = volume

v = a * h

v = 84.6cm² * 7cm

v = 592.2cm³

The volume of the right rectangular prism is  592.2cm³

6 0
3 years ago
SUPER POINTS! HURRY FOR BRAINLIEST
Mumz [18]

Answer:

A

Step-by-step explanation:

x  |  y

0    0

1     4

2    n  -> 8

3    12

I've rewritten the x-y table so it's easier to read.

Take a point: 2,8. 2 times 4 is 8.

Take another point: 3,12. 3 times 4 is 12.

Ooh, looks like we have a pattern! After testing all the points (which you should always do in case there's an outlier) each x is multiplied by 4 to get the y. The formula for this is <u>y=kx,</u> where k is the constant of proportionality. So the equation is <u>y=4x.</u> This means x and y are directly proportional.

(They would be inversely proportional if in the form y=k/x; jointly proportional if they were in the form z=kxy, and nonproportional if there was no relationship at all.)

8 0
3 years ago
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