Answer:
d) No, it is not a proportional relationship because the graph does not go through the origin
Step-by-step explanation:
A proportional relationship has to pass through the origin (0,0)
Answer:
slope is 0, y = -2
Step-by-step explanation:
ignore this I need more letters lol
Answer:
The first mechanic worked for 20 hours and the second mechanic worked for 5 hours
Step-by-step explanation:
Let f be the number of working hours of first mechanic
Let s be the number of working hours of second mechanic
Given that they both worked for a combined total of 25 hours
⇒f + s = 25 → equation 1
First mechanic charged $95 per hour and second mechanic charged $90 per hour and they both together charged $2350
⇒95f + 90s = 2350 → equation 2
Using equation 1 in equation 2:
95f + 90(25-f) = 2350
⇒95f + 2250 - 90f = 2350
⇒5f = 100
or f = 20 hours
⇒s = 25 - f ⇒ s = 5 hours
<u>The first mechanic worked for 20 hours and the second mechanic worked for 5 hours</u>
<span>we will use Thalès theorem
since triangle PRQ and ARC are similar
PR = QR = PQ
AR CR AC
so we can use
</span>PR = PQ
<span>AR AC </span>
but AR = CR finally, PQ = AC x PR / CR
PQ = <span>9.6 x 4.8 / 7.2 = 6.4</span>
the true answer is <span>6.4 inches</span>