Answer:
16
Step-by-step explanation:
Substituting 16 will make the expression valid and correct since the square of -4 is 16 and the addition of it is -8.
Let the triangle be abc with equal sides ab,bc and ca
then perimeter = 3 ab = 12a + 18b
ab = = 4a + 6b ( each side will have this length)
Now since qr is a mid segment it will be = half length of ab
So qr = 2a + 3b Answer
Answer: x = 1/2
Step-by-step explanation:
2(1/2)=1
1=1
Answer:
A. $22 = $(50 + 20h) ÷ h, and the value of h = 25 hours
Step-by-step explanation:
Since the enrollment fee is $50, it is a fixed cost irrespective of whether the students go to learn or not.
Again, as Jorge charges $20 per hour, it is a variable cost. If Jorge teaches h number of hours, total variable costs = $20 × h = $20h.
The total cost = total fixed cost + total variable cost = $50 + $20h
If h represents the number of hours a student spends in lessons, according to the question, the average cost, $22 = ($50 + $20h) ÷ h
or, $22h = $50 + $20h
or, $22h - $20h = $50
or, $2h = $50
or, h = $50 ÷ $2
Therefore, h = 25 hours.
Jorge teaches 25 hours lessons.
