we know that
A quick way to estimate the sum of two numbers is to round each number and then add the rounded numbers
case a) We round the number to the nearest hundred
so
Round up is equal to
Round up is equal to
Find the estimate sum
case b) We round the number to the nearest tens
so
Round up is equal to
Round down is equal to
Find the estimate sum
2) I'm using r for rate .If it's 60km in 4h that means that 1/4=r/60 which means you can cross multiply it and it'd be 60=4r. If you divide 4 on both sides it would be 15=r. The rate is 15km and hour.
3) For this one, it's the same. You have to put 1/12=r/24 and cross multiply. It would be 24=12r then you divide both sides by 12 and you get 2=r.
4) It says d=r*t. For this problem, d=56 and r=8 if you substitute it you would have 56=8t and if you divide both sides by 8 you would have 7=t.
5) d=r*t. This means that if you substitute it, you would have d=25*160. 25*160=4000 so d=4000
O
$5.70
O $6.00
O $15.83
O $57.00
Answer: answer $5.70
Step-by-step explanation: if 100 dollars has 5% off it would be 95$ so if it’s 6% it’s closed to a dollar so 5.70$ is the answer
Answer:
A. $5.70
Step-by-step explanation:
I got this question correct on my assignment! Hope this helped!
Answer:
1/2 ÷ 4 = 1/8
Step-by-step explanation:
The way to think about this is you want to divide how much you have by how many people there are.
18 5/12 + 8 10/17 + 23 7/12 + 28 7/17
First change them to improper fractions
18 5/12 = 221/12
8 10/17 = 146/17
23 7/12 = 283/12
28 7/17 = 483/17
now find the common denominator which would be 204
221/12 = 3757 /204
146/17 = 1752 /204
283/ 12 = 4811 /204
483/ 17 = 5796 /204
now add
(3757 + 1752 + 4811 + 5796) = 16,116/204
now divide
16,116 ÷ 204 = 79
Your answer is D. 79
Hope this helps. :)