Two mechanics worked on a car. first mechanic worked 20 hours, and the second worked 5 hours. together the charged $1800. what was the rate charge by each if the some of both rates was 135 per hour?

Step-by-step explanation:

let one charge=x

second charge=135-x

20x+(135-x)5=1800

4 x+135-x=360

3x=360-135=225

x=75 $

first charges $ 75 for 20 hours

second charges =135-75=$60 for 5 hours.

step-by-step explanation:

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answer: (c) m∠qpo + (2x + 16)° = 180°

step-by-step explanation:

the opposite angles of a quadrilateral are supplementary.

so, ∠o + ∠q = 180°   and   ∠p + ∠r = 180°

since ∠r = 2x + 16°, we can use substitution as follows:

∠p + ∠r = 180°

∠p + (2x + 16)° = 180°