B 9.2 in will be your answer for the test
Answer:
Step-by-step explanation:
l=√(4²+7²)
=√(16+49)
=√(65)
≈8.1 ft
wall is perpendicular to base and ladder is hypotenuse.
applying pythagoras's theorem.
1/4 Of 600 Is 150 And 70% Of 300 Is 210. That Means, 70% Of 300 Is Better!
Answer:
He saves $0.0175 per mile
Step-by-step explanation:
Before the work done on the car´s engine, it took 0.033 gallons to travel one mile ( 5 gallons /150miles =0.033). After this work, the car spends 0.028 gallons to travel one mile (6 gallons/210 miles =0.028). The difference between this two is:
0.033 gallons/mile-0.028 gallons/mile= 0.005 gallons per mile.
Now Mr.Harper´s saves 0.005 gallons per mile.
In money he saves:
$3,50/gallon*0.005 gallon/mile= $0.0175/mile (the unit of "gallon" cancel each other)
Rounded to the nearest cent:
He saves $0.0 per mile.
