If e = -13 and f = 8, find the value of e + f? Please explain step by step to get marked

F(x) = 1/x g(x)=x-4 can you evaluate (g*f)(0) ? why or why not?

Bob the builder is making 480kg of cement mix. this is made by cement, sand and gravel in the ratio 1: 3: 4

The first triangle is dilated to form the second triangle. select true or false for each statement. statement true false the scale factor is 0.625. the scale factor is 1.6. a right triangle with a side length of .5. an arrow points to a larger right triangle with a side length of .8