Arectangle is 3 times as long as it is wide. the perimeter id 70 cm. findthe dimensions of the rectangle. round to the nearest tenth if necessary.

From what the problem tells us, we can set up an equation and solve for x:

Then, we solve for the dimensions:

Then, check our work to confirm the dimensions yield the correct perimeter:

step-by-step explanation:

use pothagarean therom

a^2+b^2=c^2 so first ac

acm is a right triangle because c= 90°

and am (the hypotenuse or c) =16+9 =25

but there is not enough info we need another angle or side length

the formula of a slope:

we have the points (-2, 7) and (2, 3). substitute: