The car travelled a distance of 36.15 miles in 1 hour. The car travelled a distance of 12.05 miles in 1 gallon of gas.
The unitary method is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value.
It is given that a car traveled at a constant speed for 4 hours and covered 144.6 miles and also it used 12 gallons of gas to travel this distance.
It took 4 hours to travel a distance of 144.6 miles.
For 1 hour at constant speed, the car will travel 144.6/4 miles .
∴ For 1 hour at constant speed the car travels 36.15 miles.
For 12 gallons of gas, the car travels 144.6 miles.
For 1 gallon of gas, the car travels 144.6/12 = 12.05 miles
∴ For 1 gallon of gas, the car travels 12.05 miles.
Thus the car travelled a distance of 36.15 miles in 1 hour. The car travelled a distance of 12.05 miles in 1 gallon of gas.
To learn more about Unitary method, refer -
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Cos^2(81°) - sin^2(81°)
Answer:
= (162°)
Step-by-step explanation:
(81°) - (81°)
we know that;
(x°) - (x°) = (2x°)
(81°) - (81°) = (2 * 81°)
= (162°)
O B. -x2 + 4x + 6
O c. 4x2 - 19
O D. - x2 + 4x - 4
Answer:
I think it's going to be D
Step-by-step explanation:
4x+1=2x-5
-4x-1 -4x-1
-2x=-4
÷2
x=-2