8(1-8p) + 8p
8 - 64p + 8p
8 - 56p
8 = 56p
1/7 = p
Answer:
D. $46,800
Step-by-step explanation:
%18 of $260,000 is $46,800
3 times 7.75 = 23.25 + 7.75 = 31.00
so the basketball is $23.25 and the pump is $7.75
Answer:
65.426
Step-by-step explanation:
Given that:
Mean height (m) = 68 inches
Standard deviation (s) = 2 inches
Height required to be taller than 90% of the class :
P(Z > x) = 0.9
The corresponding Zscore is - 1.282 (Z probability calculator)
Using the Zscore relation :
Zscore = (x - m) / s
-1.282 = (x - 68) / 2
-1.282 * 2 = x - 68
-2.564 = x - 68
-2.564 + 68 = x
x = 65.436
X^12/x^9=125
Simplify the left side
x^3=125
Find the cube root of both sides
x=5
Final answer: The number is 5
