Answer:
No. The answer on the right is positive 16 while the answer on the left is negative 9. 16≠-9
Step-by-step explanation:
Divide both sides by the coefficient 6 to get p <span>≥ −24/6 = -4
p </span><span>≥ −4</span>
If you use this equation then you say that the ground is h=0 and solve as a quadratic.
The quadratic formula is (-b±<span>√(b^2-4ac))/2a when an equation is in the form ax^2 + bx + c
So the equation you have been given would be -16t^2-15t-151 = 0
This equation has no real roots which leads me to believe it is incorrect.
This is probably where your difficulty is coming from, it's a mistake.
The equation is formed from S=ut+(1/2)at^2+(So) where (So) is the initial height and S is the height that you want to find.
In this case you want S = 0.
If the initial height is +151 and the initial velocity and acceleration are downwards (negative) and the initial velocity (u) is -15 and the initial acceleration is -32 then you get the equation S=-15t-16t^2+151
Solving this using the quadratic formula gives you t = 2.64 or t = -3.58
Obviously -3.58s can't be the answer so you're left with 2.64 seconds.
Hope this makes sense.
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Hello There!
We know that the painter had the steamer from 9 a.m in the morning to 4 p.m in the afternoon
he had it for a total of 7 hours. 28.84 divided by 7 equals 4.12 an hour
Divide $28.84 by 7 hours.
28.84/7 = 4.12
The rental cost per hour was $4.12.
