Answer:
Step-by-step explanation:
Let X = the monthly charges for cell phone plans
X is N(63, 17)
a) Normal curve with mean =63 and std dev =17
Find attachment
b) X<46
Since area = 0.1587, we get probability = 0.1587
P(X<46) = 0.1587
Answer: 15
Step-by-step explanation: Perimeter is adding the width and the length together. For a rectangle, it has four sides, so it has two lengths and two widths. The width is 10, so you add 10 + 10 which is 20. The length of the rectangle would be 15 since 15 + 15 is 30, and then 30 + 20 = 50, the perimeter.
A is the answer because the square root of 0.036 is irrational.
Answer:
x ≈ 7.9 ft
Step-by-step explanation:
cos∅ = adjacent over hypotenuse
Since we are dealing with a right triangle, we can use trigonometry to help us solve for missing values:
cos44° = x/11
11cos44° = x
x = 7.91274
x ≈ 7.9 ft