math1

the original dimensions of a rectangle were 15 by 20 cm. when both dimensons were decreased by the same amount, the area of the new rectangle is half the area of the original rectangle. find the dimensons of the new rectangle.

Sheila has a picture frame that measures 20 cm by 30 cm. If she puts a mat inside the frame that decrease the picture by 264cm^2, how wide is the mat?

a ladder is resting against a wall. the top of the ladder touches the wall at a height of 12 feet. Find the distance from the wall to the bottom of the ladder if the length of the ladder is 12feet less than twice its distance from the wall.

for a science project about ten forms of energy,how do you convert or change one energy to another. can you give me an example please?

how do i find the continuity f(x) = 1. Need an example to help understand. Cannot understand from my notes. I get the concept but don't understand how to find the continuity...

a red and blue number cube are rolled. determine the probability that an odd number is rolled on the red cube and a number greater than 1 is rolled on the blue cube

One letter is randomly selected from the word PRIME and one letter is randomly selected from the word MATH. What is the probability that both letters selected are vowels?

you cannot solve it since you cant square root a negative number... unless -2x was positive 2x.