The lengths of the sides of a square are 5 cm. find the length of the diagonal

If f(x)=-x^2+6x-1 and g(x)=3x^2-4x-1,find(f+g)(x)

Which equation can be used to measure the density of water in a spherical water tank? let w represent the number of water particles within the region.

The scatter plot shows the number of animal cells clara examined in a laboratory in different months: plot ordered pairs 1, 20 and 2, 60 and 3,100 and 4, 140 and 5, 180 what is the approximate predicted number of animal cells clara examined in the 9th month?