Answer:
Ed would earn $4480
Step-by-step explanation:
you could solve this by ratios
make x = the amount of money he would earn if he worked 40 hrs
step 1: write the ratio
112/8 = x /40
step 2: cross multiply
8x = 4480
step 3: isolate x by dividing
8x/8 = 4480/8
answer: x = 560
Answer:
$19.35
Step-by-step explanation:
129 x .15 = 19.35
The confidence interval would be (10.44, 12.16). This means that if we take repeated samples, the true mean lies in 90% of these intervals.
To find the confidence interval, we use:

We first find the z-value associated with this. To do this:
Convert 90% to a decimal: 90% = 90/100 = 0.9
Subtract from 1: 1-0.9 = 0.1
Divide by 2: 0.1/2 = 0.05
Subtract from 1: 1-0.05 = 0.95
Using a z-table (http://www.z-table.com) we see that this is directly between two z-scores, 1.64 and 1.65; we will use 1.645:
Step 1: Add 6v to both sides.
5v+6v=−6v−33+6v
11v=−33
Step 2: Divide both sides by 11.
11v
11
=
−33
11
v=−3
answer: v=−3
I am not sure of this answer