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3 years ago

Solve for x 4(x+7)=5x+8

Mathematics

2 answers:

wel3 years ago

8 0

Step-by-step explanation:

4x+28=5x+8

x=20

.............

nlexa [21]3 years ago

4 0

Answer:

x=20

Step-by-step explanation:

4x+28=5x+8

-4x

28=x+8

-8

20=x

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Step-by-step explanation:

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The sum of the lengths of any two sides of a triangle must be greater than the third side. If a triangle has one side that is 18

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Answer: One side could be 18 and the other side will be 33.

Step-by-step explanation:

Side #1 = 18
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3 years ago

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3 years ago

Find the solution(s) of the following equation. x2 = 36/49

abruzzese [7]

Answer:

$x=-\frac{6}{7} , x=\frac{6}{7}$

Step-by-step explanation:

We begin with the equation $x^2=\frac{36}{49}$

In order to get x on the left side, we need to square root both sides. As we are taking the square root of each sides, one of the sides must have a ± added to it in order to make sure that both of the solutions are found.

$\sqrt{x^2} =$ ± $\sqrt{\frac{36}{49} }$

We can then simplify this

$x=$ ± $\frac{\sqrt{36} }{\sqrt{49} }$

And once more

$x=$ ± $\frac{6}{7}$

Which means that our solutions are

$x=-\frac{6}{7} , x=\frac{6}{7}$

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