Answer:
i needed the poimts im sorry
Step-by-step explanation:
Answer:
$128.40
Step-by-step explanation:
200 × 0.4 = 80
200 - 80 = 120
120 × 0.07 = 8.4
120 + 8.4 = 128.4
Answer:
(B) $15
Step-by-step explanation:
Big Video: y = 2.49x + 9.99
Main Street: y = 1.79x + 20.49
easiest way to solve would be to graph and find the point of intersection or set 2.49x + 9.99 and 1.79x + 20.49 equal to each other
2.49x + 9.99 = 1.79x + 20.49
subtract 1.79x from each side to get:
.70x + 9.99 = 20.49
subtract 9.99 from each side to get:
.70x = 10.50
divide each side by .70
x = 15
Answer:
55.734 mph
Step-by-step explanation:
Let's call the wind speed x and the time of flight t.
Then, we can write the following equation, knowing that the distance is equal speed times time of flight:
910 = (350+x) * t
660 = (350-x) * t
If we isolate t in both equations and compare its value, we have that:
910 / (350+x) = 660 / (350-x)
(350+x)/(350-x) = 910/660
350 + x = 1.3788 * (350-x)
350 + x = 482.58 - 1.3788x
2.3788x = 132.58
x = 55.734 mph
Answer:
yes
Step-by-step explanation: