Answer:
Step-by-step explanation:
What you would want to do is add the $15.75 you would want to add it 5 times
So,
0.2(n - 6) = 2.8
Distribute.
0.2n - 1.2 = 2.8
Add 1.2 to both sides.
0.2n = 4
Divide both sides by .2.
n = 20
Check.
0.2(20 - 6) = 2.8
Simplify inside parentheses.
0.2(14) = 2.8
Multiply.
2.8 = 2.8 This checks.
S = {2.8}
Answer:
4
Step-by-step explanation:
7 is a Prime number and has 4 integer divisors
These are ± 1 and ± 7
Answer:
A
Step-by-step explanation:
