5th grade math. correct answer will be marked brainliest.

20 -> 10 × 2 (2 is prime)

10 -> 5 × 2 (both are prime)

So you have 2 × 2 × 5, which can also be written as 2² × 5, which is your answer. I hope this helps!

Step-by-step explanation:

1, 2, 4, 5, 10, 20 (hopefully its right sorry if its not)

Step-by-step explanation:

a line is an defined derm because it

a)contains an infinite number of points b) can be used to create other geometric shapes c)describes something that does not have width or depth d) is a term that does not have a formal definition. a line is an undefined term because it: contains an infinite number of points.

b) 1/3 * 1/5

step-by-step explanation:

each smallest part is 1/15 since the written one is 1/5 and it's divided by 3 equal parts. (1/5 )/3 = 1/15 = 1/3 * 1/5