Use the formula 1/2(base1+base2)height. Substitute the values.
Answer:
Probably unequal ( B )
Step-by-step explanation:
<u>experimental group = 10</u>
using 85% ethanol gasoline
mean = 240 pounds per 100 miles
standard deviation = 20 pounds
<u>control group = 14 vehicles </u>
using regular gasoline
mean = 252 pounds per 100 miles
standard deviation = 15 pounds
comparing the sample variance of each group shows that they are probably unequal using the equation below
Variance for a sample set of data = ∑ ( x - X ) ^2 / n - 1
where n = number of events
X = mean value
x = value of events
your calculations for volume (pi x r^2 × h) and surface area (2 × pi × r (h+r)) are correct. However your ratio are incorrect. From the formulas the ratio of surface area to volume would be r×h:2(h+r)
Answer:
90
Step-by-step explanation:
g(-10) = (-10)²+(-10)
= 100-10 = 90
Answer:
square feet
Step-by-step explanation:
Circumference = 2πr
13π = 2πr
=r
Area = πr²
π × ² =
π square feet
