15
63 x 5 = 315
315/20 = 15.75
hence, 15 $20 bills
Answer:
linear
Step-by-step explanation:
A linear function has a straight line. If you graph this is a straight diagonal line. A linear function has a independent and dependent variable. The independent variable is x, and the dependent variable is y.
Answer:
289.877 ft
Step-by-step explanation:
You can draw the eagle and mouse by using a right triangle. You know that the height of the triangle will be 280 feet and the distance between eagle and mouse should be the hypotenuse. Since we know the angle and one side of the triangle, we can use trignometry (cosine(angle)=adjacent/hypotenuse). Plug in your values and solve for the hypotenuse.
Answer: 
Step-by-step explanation:
Given : Sample size :
, which is a small sample (, 30) so we use t-test.
Sample mean : 
Standard deviation : 
Significance level : 
Critical value : 
The confidence interval for population mean is given by :-

Hence, a 95% confidence interval for the population mean
= 