4√30^2 times 3√20x

(i will mark you brainliest if you answer this correctly)

720

Step-by-step explanation:

First you want to simplify both of them. To do this on 4 you can just cancel out the square and the square root to get 4 x 30 which is 120. Now you simplify 3 you do this by splitting the radical into 2 radicals. So you want to take out a perfect square which in this case is and you have left over. This brings us to 120 x 3 x 2 (2 is the square root of 4) . Now multiply 120 x 3 x 2 and get 720.

answer: sorry i can't you.

step-by-step explanation:

to find the perimeter of the rectangle this is the expression:

x-9+x-9+3x-4+3x-4=138

if we simplify it:

8x-26=138

remember, 138 is what it all adds up to

the length is 11.5cm

the width is 57.5cm

the area is 661.25cm^2

the answers might not be correct use at own risk