Answer:
a. square root of 5
b. square root of 13
c. 9
d. 13
Step-by-step explanation:
There was 11.54% decrease in attendance.
Step-by-step explanation:
Attendance in 2014 = Old value = 650
Attendance in 2015 = New value = 575
Change = New value - Old value
Change = 575 - 650 = -75
The negative sign indicates a decrease in attendance.
Decrease percentage = 

Rounding off to nearest hundredth
Decrease percent = 11.54%
There was 11.54% decrease in attendance.
Keywords: percentage, subtraction
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5,000 × 3.8%= 19,000×18= 342,000 × 40 = 13,680,000
Answer:
6 inches
Step-by-step explanation:
Area = (base1 + base2)/2 · height
base1 = b
base2= 8
height = 3
Area = 21
21 = (b+8)/2 ·3
21 = 3(b+8)/2
multiply both sides by 2
42 = 3(b+8)
divide both sides by 3
14 = b+8
subtract 8 from both sides
b = 6 in