Answer:
The answer is B. -33
Step-by-step explanation:
I doubt you'll need to show working
-(-6) in simplest form is +6 because a - times a - is a +
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
Answer:
Left apples = 2
Step-by-step explanation:
The given problem is "If pierino has 4 apples and eats two, what is left".
Total no of apples = 4
He eats 2 apples = 2
We need to find no of apples left.
Left apples = total no of apples - eaten apples
= 4 - 2
= 2
Hence, there are 2 apples left.
