Answer: 100 ml each hour.
Step-by-step explanation:
1000 -400 =600 used from original amount.
Divide 600/6 = 100 ml per hour.
Answer:
9 feet away
Step-by-step explanation:
40²+b²=41²
1600+b²=1681
b²=81
b=9
Answer:
<h3>Children's books</h3>
- Number = c
- Cost of each = $5
- Total of children's books = 5c
<h3>Adult books</h3>
- Number = a
- Cost of each = $9
- Total of children's books = 9a
<h3>The equations reflecting the totals are</h3>
- Books ⇒ c + a = 500
- Total cost ⇒ 5c + 9a = 3940
Answer:
Step-by-step explanation:
<u>Given:</u>
- One time donation = $10
- Hourly donation = $2.25
- Total donation = $39.25
- Number of hours = x
<u>Required equation:</u>
<u>Solve for x:</u>
- 2.25x = 39.25 - 10
- 2.25x = 29.25
- x = 29.25/2.25
- x = 13
An easy way is to multiply 9 by factors of 10
10
100
1000
9 times 10=90
9 times 100=900
9 times 1000=9000
and so on
or you could find multipules of 9 that are over 27
multipulse are
9,18,27,36,45,54,63,72,81,90,99,108,117,126,135,144,153,162,171,180,189,198,207,216, etc
so basically you could use any number in that list from 27 and after