Which expression is equivalent to 5(7v+3)?
15v + 35
7v + 15
35v+3
35v+15
35v+15
Which expression is equivalent to 3(7u+2)+8?
A. 21u + 14
B. 21u + 10
C. 14u + 21
D. 7u + 14
A. 21u + 14
Which expression is equivalent to 9(2x+4)+5?
A. 41x + 18
B. 18x + 9
C. 18x + 41
D. 2x + 41
A. 41x + 18
Is 6 a factor of 54c+48?
Yes or no
Yes
Is 9 a factor of 56a+12b?
yes or no
No
According to her running log, Shivani averaged 3.2 miles per week last month and 2.8 miles per week this month. By what percent has her average decreased?
To find the percent decrease in Shivani's average, we need to calculate the difference between the two averages and then divide it by the original average, and finally, multiply by 100.
The decrease in average = 3.2 - 2.8 = 0.4 miles per week
Percent decrease = (0.4 / 3.2) * 100 ≈ 12.5%
Shivani's average has decreased by approximately 12.5%.