Answer:
B.) 
Step-by-step explanation:
Then find the Least Common Denominator(LCD); simply just multiply 4 by 3 to get 12; then multiply using the opposite number.
to get: 
.
now the denominators is the same on both sides, just subtract the numerator.
27 - 8 = 19
Now simply: 
.
Your final answer is 1\frac{7}{12}[/tex].
Given:
Perimeter of a football field = 920 feet.
The width is 60 feet more than one-third of the length.
To find:
The dimensions of a football field.
Solution:
Let the length of the field be x.
Then, width = 
We know that,
Subtract both sides by 120.
Multiply both sides by 3.
Divide both sides by 8.
Now,
Therefore, the length and width of the football field are 300 feet and 160 feet respectively.
Answer:
D)We are 95% confident that the proportion of adults (ages 17‐26) who attended college during the past 4 years and say that alcohol and drug use at their school is a big problem is between 53% and 59%.
Step-by-step explanation:
x% confidence interval:
A confidence interval is built from a sample, has bounds a and b, and has a confidence level of x%. It means that we are x% confident that the population mean is between a and b.
In this question:
95% confidence interval is (0.53, 0.59).
This means that we are 95% sure that the true proportion for the population of adults who attended college who say that alcohol is a big problem is between 0.53 and 0.59. This means that the answer is given by option D.
Answer:
rational and rational..........
He earned 32 for 4 hours, so you have 32/4.
Then you want to find the number of hours to make 80, so you have 80/h.
Set them to equal each other:
32/4 = 80/h
Now cross multiply:
(32 * h) / (4 *80)
Simplify:
32h = 320
Divide both sides by 32:
h = 320 / 32
h = 10
He will need to work 10 hours.
