Answer: 
Explanation:
Place the decimal point between the first two digits to get 4.14
Now ask yourself: How many places must we move the decimal point to go from 4.14 back to 4,140,000,000?
The answer is 9 places to the right.
This means we'll have 9 as the exponent over the 10

Answer:
5
Step-by-step explanation:
25, 45, 85, 245, 285
3 digit numbers must start with 2 as anything else would be more than 300
All numbers must end with 5 as that is the only odd number.
Answer:
1/2 x 5= 2.5
6/10 x 8 = 4.8
3/6 x 9 = 4.5
1/6 x 5 = 0.8333333333 recuring
Step-by-step explanation:
1/2 x 5
1 ÷ 2 = 0.5
0.5 x 5 = 2.5
6/10 x 8
6 ÷ 10 = 0.6
0.6 x 8 = 4.8
3 ÷ 6 x 9
3 ÷ 6 = 0. 5
0. 5 x 9 = 4.5
1/6 x 5
1 ÷ 6 = 0.166666666 recuring
0.166666666 recuring x 5 = 0.8333333333
Answer:
11y + 21
Step-by-step explanation:
mutipily 3 by y + 7 bc 3 is right outside of the parentheis which means to mutipily. Then u get 3y +21 +8y. then simpilfy