25a is true
25b is true
25c is false
25d is false
Answer:
Below in bold.
Step-by-step explanation:
cos x = adjacent side / hypotenuse
= 8/21
= 0.380952
So m < x = arccos 0.380952
= 67.607
= 68 degrees to nearest degree.
First you set and equation for length which is three times width
l=3w
The substitute in the perimeter, p, into the equation for perimeter which is p=2l+2w
88=2l+2w
Then substitute in length, l, with the equation previously created: l=3w
88=2(3w)+2w
Multiply 2 and 3w
88=6w+2w
Combine like terms: 6w+2w
88=8w
Divide to get the value for w
w=11
Since you figure the value for w, 11, you can plug it into the equation for length which is l=3w
l=3(11)
When you do you get
l=33
So the length is 33 and the width is 11
Answer:
14.5*29=420.5 miles for a full 14.5-gallon tank.
7.25-gallons is what is left in a half tank.
105.125 miles can be driven on a quarter tank.
if the low milage alert comes on at 50 miles left they have 1/9 of the tank left with gas.
if the low milage alert comes on at 50 miles left he was 1.724 gallons of gas left.
It would cost $30.28 to get the tank back to a full 14.5 gallons.
Step-by-step explanation:
It was mostly basics knowing that 29 miles per gallon and then its just plug in til it fits.
