Tom paid a mechanic h dollars per hour for a 4 hour job plus $120 for parts. the total charge was $280. which equation can you used to determine how much the mechanic charge per hour?

280= H×4+120

280-120= H×4+120-120

160= H×4

160÷4= H×4÷4

40= H

h(4)+120=280

40 dollars per hour

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step-by-step explanation:

step-by-step explanation :

we know that

the measurement of the outer angle is the semi-difference of the arcs which comprises

in this problem

m< xzy is the outer angle

substitute the values

the measure of angle xoy is equal to

> by central angle

substitute the value