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2 years ago

If 2(4x + 3) -12 = 3x -6, then what value of x makes the equation true ?

Mathematics

1 answer:

poizon [28]2 years ago

3 0

x=0

let's solve your equation step-by-step

2(4x+3)-12=3x-6

(8x)+(6-12)=3x-6

8x-6=3x-6

subtract 3x from both sides.

8x-6-3x=3x-6-3x

5x-6+6=-6+6

5x=0

5x/5=0/5

x=0

I hope that helps you

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3 years ago

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2 years ago

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3 years ago

The area of a rectangle is 504 square meters. If the perimeter is 90 meters, find the length and width of the rectangle.

o-na [289]

Answer:

Length =24m and width = 21m

Step-by-step explanation:

Given,

Area of rectangle, A = 504 m^2

Perimeter of rectangle, P = 90 m

Since we know, A = Length * width and P = 2(Length + width)

So, A = L * w

=> 504 = L*w ------------------(1)

And P = 2(L + w)

=> 90 =2( L + w) ----------------(2)

Plug L =504/w in equation 2

i.e. 90 = 2( 504/w + w)

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or w^2 - 45w + 504 = 0

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3 years ago