What are all the commom factors of 15, 45, & 90? :l

the answer is 15

Good luck, hope i helped

1, 3, 5

Step-by-step explanation:

1 is a common factor because all numbers are divisible by 1

3 is a common factor because all the numbers are divisible by 3 (or in other words multiples of 3)

5 is a common factor of all those numbers because the last digit place in 15, 45 and 90 end in 5 and/or 0

If you're looking at 90 individually, then the common factors are 1, 2, 3, 5, 6, 9, 10, 15, 30, 45, 90

If you're looking at 45 individually, then the common factors are 1, 3, 5, 9, 15, 45

If you're looking at 15 individually, then the common factors are 1, 3, 5, 15

40 x 50 = 2000

step-by-step explanation:

step-by-step explanation:

part a. the differences are decreasing, so we know the sequence is not arithmetic. the ratios are constant (=3/4), so we know the sequence is geometric.

part b. from part a, we know the common ratio is 3/4, so each term is 3/4 of the one before. the initial term is the number of gallons at h=1.

g[h] = (3/4)·g[h-1]

g[1] = 384 . . . . initial value required for a recursive definition

part c. the general formula for a geometric sequence is

a[n] = a[1]·r^(n-1)

we have a[1] = 384, r = 3/4, and the term number given by h. the formula that follows is

g[h] = 384·(3/4)^(h-1)

part d. filling in the value and doing the arithmetic, we have

g[12] = 384·(3/4)^11 ≈ 384·0.042235136 ≈ 16.2183 . . gallons

part e. each gallon is 4 quarts, so

16.2183 gal × 4 qt/gal = 64.8732 qt