Total income is $70/week. $20 of that goes towards the cost of gas. Thus, the net earnings were $50 for the week.
$50
------------------- = $5 per hour
10 hours
Answer:
Unlike the previous problem, this one requires application of the Law of Cosines. You want to find angle Q when you know the lengths of all 3 sides of the triangle.
Law of Cosines: a^2 = b^2 + c^2 - 2bc cos A
Applying that here:
40^2 = 32^2 + 64^2 - 2(32)(64)cos Q
Do the math. Solve for cos Q, and then find Q in degrees and Q in radians.
Step-by-step explanation:
Answer:
25
Step-by-step explanation:
Put the numbers where the corresponding letters are, and do the arithmetic.
3² +3·8 +2 -2·5
= 9 +24 +2 -10
= 25
