Word form: Three and four tenths. Expanded form: 3.0 + 0.4 (zeros are not necessary) hope it helped!
Answer:
4,646.30
Step-by-step explanation:
The sum of n terms of geometric sequence can be calculated using formula

In your case,

Substitute into the formula:

Answer:
5hrs & 30mins
Step-by-step explanation:
Answer:I think it’s c
Step-by-step explanation:
Answer:
You were 5 years old.
Step-by-step explanation:
Brother is 5+x
X is your age.
5+x=10
-5 -5
x=5