I got D because if you simply add you get D
Answer:
63°
Step-by-step explanation:
They are corresponding angles.
2/3 ÷ 3/11
flip the second one and multiply:
2/3 × 11/3
22/9
2 4/9
Hope this helps :)
Set h to 640 and solve for t:
640 = -490t^2 + 1120t
Subtract 640 from both sides:
-490t^2 + 1120t - 640 = 0
The formula to solve a quadratic equation is:
x = -b -/+ sqrtroot (b^2-4ac)/(2a) where a = -490, b = 1120 and c = -640
Solve:
x = -1120 -/+ sqrtroot (1120^2-4(-490)(-640) )/ 2(-490)
x = 8/7 = 1.1428 = 1.14
Time was 1.14 seconds
