By similar triangles we can say...
h/14=5/3.5 multiply both sides by 14
h=70/3.5
h=20 ft
Answer:
$48.60
Step-by-step explanation:
50(.10)=5.00 50-5=45. 45(.8)=3.60. $45.00+$3.60 = $48.60
Complete question :
The average amount that a college student spends on a textbook is $205 with a
standard deviation of $35. What is the probability that a student spends:
A. between $10 and $310?
Answer:
0.999
Step-by-step explanation:
Mean, m = 205 ; Standard deviation, s = 35
Z = (x - m) / s
x = 310
Z = (310 - 205) / 35 = 3
P(z < 3) = 0.99865
x = 10
Z = (10 - 205) / 35 = - 5.57
P(Z < - 5.5)
P(z < 3) - P(z < - 5.5)
0.99865 - 0
= 0.999