Answer:
-1.25 :)
Step-by-step explanation:
Answer:
The expressión is:
10(a+14) = 9a
and the number is:
-140
Step-by-step explanation:
The expression is:
10(a+14) = 9a
then:
10*a + 10*14 = 9a
10a + 140 = 9a
10a - 9a = -140
a = -140
Check:
10(-140+14) = 9*140
10*-126 = 1260
By the empirical rule, 84% of the distribution is below one standard deviation above the mean.
16% of Ed's monthly phone bills are more than $76.
Answer:
The standard deviation of x is 2.8867
Step-by-step explanation:
The standard deviation of variable x that follows a uniform distribution is calculated as:
Where (a,b) is the interval where x is defined.
So, replacing a by -4 and b by 6, the standard deviation is:
Answer:
30
Step-by-step explanation:
7 1/2 is 15/2 as an improper fraction
15/2 ÷ 1/4 = 15/2 · 4 which is 30
