1 = 12, 2 = -6, 3 = -2, 4 = 3, 5 = 15, 6 = -13, 7 = -15, 8 = 11, 9 = -12, 10 = 0, 11 = -20
Answer:
A, C and D
Step-by-step explanation:
Given

Required
Select 3 equivalent expressions

Express 3 as 2 + 1

Rewrite as:

Split
----- Option (A)

Express 10 as 14 - 4

Rewrite as:
--- Option (C)

Factor out 1/5
--- Option D
Answer: 45 minutes
Step-by-step explanation:
the first pump takes care of 300 gallons so we need to worry about the remaining 900 gallons. the second pump removes 20 gallons per minute so all u have to do to find how many minutes it would take is divide 900 gallons by 20 gallons a minute which gives you 45
it will take 45 minutes to completely drain the pool
Answer: 210
Explanation: To find the least common multiple for the integers 30 and 35, we start by making a factor tree for each of our integers.
So 30 is 10 · 3 and 10 is 5 · 2.
35 is 7 · 5.
Notice that our 5's match up as factors of each of our integers.
When finding the least common multiple, we simply multiply all of our factors together but since the 5's match up,
we only multiply by a 5 once.
So our least common multiple or LCM is
5 · the 2 that doesn't match up · the 3 that
doesn't match up · the 7 that doesn't match up.
So we have 5 · 2 · 3 · 7 or 210.
Work is shown below.