Answer:
x = 1/4
Step-by-step explanation:
<u>Step 1: Combine like terms</u>
7 + -7x + -8 - 9x + 5
7 - 7x - 8 - 9x + 5
4 - 16x
<u>Step 2: Solve for x</u>
4 - 16x - 4 = 0 - 4
-16x/-16 = -4/-16
x = 4/16
x = 1/4
Answer: x = 1/4
Answer:
The scatter plot shows a negative association.
Step-by-step explanation:
Answer: A. Distribute the 3 outside of the parathesis to everything inside the parenthesis
We use the order of operations, also known as PEMDAS.
Since there is a variable inside the parenthesis, we cannot add/subtract 4. This means the next step is to distribute.
After distributing, the equation looks like this and we can solve it from there:
4x + 12 = 30
Answer: (C) 0.1591
Step-by-step explanation:
Given : A manufacturer of radial tires for automobiles has extensive data to support the fact that the lifetime of their tires follows a normal distribution with


Let x be the random variable that represents the lifetime of the tires .
z-score : 
For x= 44,500 miles

For x= 48,000 miles

Using the standard normal distribution table , we have
The p-value : 

Hence, the probability that a randomly selected tire will have a lifetime of between 44,500 miles and 48,000 miles = 0.1591