The top 15% (85th percentile) is the cutoff value

such that

where

is the corresponding cutoff for the standardized normal distribution. We have

, and so
(x² + 16)(x² - 16)
= (x²)² - 16²
= x⁴ - 256
Answer:
28 pizzas eaten
Step-by-step explanation:
1) estimate each number, i will take 3 1/4 as 3
5 3/4 as 6
and
2 3/4 as 3
2) combine the total number of pizzas left over:
3+6+3=12
subtract the number of pizzas left over from the total ordered:
40-12=28
Answer:
X = -12
Step-by-step explanation:
-10X + 1 +7X = 37
-10X + 7X + 1 = 37 {Add the like terms}
-3X + 1 = 37 {Subtract 1 form both sides}
-3X + 1 -1 = 37 -1
-3X = 36 {Divide both sides by (-3)}

X = -12
Answer:
x=-11
Step-by-step explanation: