Arectangle with a height of 2 cm and length of 9 cm on her computer. the length of the new rectangle is 13.5 cm. find the height of the new rectangle.

6.5cm

Step-by-step explanation:

Because the equation for a rectangle is:

Length * Width = Area

We can find out the height of the new rectangle by finding the difference between the heigh and length of the first computer:

9 - 2 = 7

So 13.5 - 7 = 6.5

So the height of the new rectangle is 6.5cm

step-by-step explanation:

always plug in x. in this case, x equals 4.

i'm going to first solve 4(2+3x)

1) 4(2+3(4)) use pemdas to solve.

i'm going to multiply whats in the parenthesis first, so 3 times 4=12.

2)4 (2+12) i'm then going to multiply 4 by both numbers in the parenthesis (because multiplying comes before adding)

4 times 2= 8.   4 times 12= 48

4) (8+48)= 56 (answer)

i'm then going to solve 8+12x and plug in 4 for x.

1) 8 +12(4)

multiplying comes before adding, so i'm gonna multiply 12 and 4.

12 times 4= 48.

2) 8+48=56

both equal the same!

6e14 is the answer.