Assuming the h is not in the exponent, R would equal The square root of V over 3.14h

**The per hour rate of first mechanic is $95 and per hour rate of $75.**

**Step-by-step explanation:**

Let,

First mechanic's rate = x

Second mechanic's rate = y

10 hours charges of first mechanic = 10x

5 hour charges of second mechanic = 5y

According to given statement;

10x+5y=1325 Eqn 1

x+y=170 Eqn 2

Multiplying Eqn 2 by 10

Subtracting Eqn 2 from Eqn 3

Dividing both sides by 5

Putting y=75 in Eqn 2

**The per hour rate of first mechanic is $95 and per hour rate of $75.**

**Keywords:** linear equation, elimination method

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**Answer:**

The 4 interior angles in the square are each 90 degrees. The four angles formed by the intersection of the 2 diagonal lines are each 90 degrees. The rest of the angles <PQT, <RQT, etc. Are all 45 degrees.