What is the formula for the following geometric sequence?

-5 -10 -20 -40

Abcd is a parallelogram find the valuse of x

Suppose a laboratory has a 30 g sample of polonium-210. the half-life of polonium-210 is about 138 days how many half-lives of polonium-210 occur in 1104 days? how much polonium is in the sample 1104 days later? 9; 0.06 g 8; 0.12 g 8; 2,070 g

Which is an x-intercept of the graphed function? (0, 4) (–1, 0) (4, 0) (0, –1)