Jerry wanted to build a new house, but he wanted it to be better insulated than his existing house. so, he got 12x12 inch samples of four different insulations. in four identical containers he put 1,000ml of water, put the lids on the containers and covered them. he let the containers sit until the temperature was equal. he wrapped each container with a different insulation. he placed the containers out in the sun for two hours. at the end of the two hours, he recorded the temperature of each container. what is the independent variable (iv) of the experiment to keep warm or cool? explain why that is the iv for this experiment

this your answer..............

x=half

step-by-step explanation:

(b) 240

step-by-step explanation:

first, we use the pythagorean formula using the given side lengths to find x. then we use x to find the side lengths. then we add the side lengths to find the perimeter.

pythagorean theorem formula:

a^2 + b^2 = c^2

(x - 20)^2 + (x - 40)^2 = x^2

x^2 - 40x + 400 + x^2 - 80x + 1600 = x^2

x^2 -120x + 2000 = 0

(x - 100)(x - 20) = 0

x - 100 = 0 or x - 20 = 0

x = 100 or x = 20

we see that the solution x = 20 must be discarded because it will give a negative side length and a side length of 0. the only valid solution is x = 100.

perimeter = sum of the lengths of the sides

perimeter = x + x - 20 + x - 40

perimeter = 3x - 60

replace x with 100.

perimeter = 3(100) - 60

perimeter = 300 - 60

perimeter = 240