Which expression is the factorization of x2 + 10x + 21?

a. (x + 3)(x + 7)
b. (x + 4)(x + 6)
c. (x + 6)(x + 15)
d. (x + 7)(x + 14)

Given the following sampling distribution of one mean with a sample size 49, from a normally distributed population,find the population standard deviation, o.79828588912497

Secant be and cf intersect at point d inside a what is the measure of cde

What is the product? a-3/15a × 5/a-3