Awebsite offers free shipping to customers who order at least $75 dollars worth of merchandise. della is ordering 2 flashlights at $10.00 each and plans to order packs of $5.00 batteries until her total is at least $75. which statement best describes how many packs of batteries she must order to qualify for free shipping?

1) in triangle the, what is the measure of angle t (in degrees)? 2) in triangle bat, the measure of angle b is 66∘, and the measure of angle t is 77∘.what is the measure of the exterior angle at a (in degrees)?

1- is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis. 2- what do you think the product of a nonzero rational number and an irrational number is? is it rational or irrational? make use of variables, the closure property of integers, and possibly a proof by contradiction to prove your hypothesis. 3- why do we have to specify that the rational number must be nonzero when we determine what the product of a nonzero rational number and an irrational number is? if the rational number were 0, would it give us the same result we found in part b?

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'