Solve for x -2(4x-3)=30 X=-2 X=-3 X=-4 X=-6

Mathematics

2 answers:

Sergio039 [100]2 years ago

8 0

Answer:

Step-by-step explanation:

x-2(4x-3)=30

x-8x+6=30

-7x=30-6

-7x=24

x=-24/7 maybe it is a mistake in the statement of the problem

vlabodo [156]2 years ago

4 0

You have to do the numbers in the parathense which is x-8x+6=30
Then you have to combine like terms -7x+6=30
Move the constant to the right which will be -7x=30-6
Then you subtract the numbers -7x=24
Divide both sides by -7 so it equals x=-24/7
Which equals x=-4

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A square and a rectangle have the same perimeter. The rectangle is 13 cm long and 7 cm wide.

lorasvet [3.4K]

Solving

Knowing that we have the information needed we will first find the perimeter of the rectangle.

Rectangle:
Length: 13cm

Width: 7cm

Formula: L+L+W+W

13+13+7+7 = 40cm

Meaning the perimeter is 40cm and we can use this to find the length of a square. From general knowledge we know that all sides of a square is equal.

So if we divide the 4 sides by 40 we will get our answer.

40 ÷ 4 = 10