A = 1/2 * b * h
A = 178.5
b = h + 4
178.5 = 1/2 * (h + 4) * h
357 = h^2 + 4h
h^2 + 4h - 357 = 0
(h - 17)(h + 21) = 0
h - 17 = 0
h = 17
h + 21 = 0
h = -21 .....not this one because it is negative
b = h + 4
b = 17 + 4
b = 21
so the height is 17 inches and the base is 21 inches <==
Answer:
Step-by-step explanation:
A: 5600 meters per hour
B: 700 meters per 1/6 hour
C: 4200 meters per hour
I cant see the final question
i believe your answer will be 0.04 or 4/100
OR if you need an equivalent expression, that would be 81/2187
Answer:
Formulas for a rectangular prism:
Volume of Rectangular Prism: V = lwh.
Surface Area of Rectangular Prism: S = 2(lw + lh + wh)
Space Diagonal of Rectangular Prism: (similar to the distance between 2 points) d = √(l2 + w2 + h2)
Step-by-step explanation:
Hope it helps :))))
I think it should be like this,
1) The function should be the last one, and it is in the form that shows zeros, the zeros show when the ball could hit the ground
2) Because she wants to know " after how many seconds the ball hits the ground", I think, that the ball's height above the ground should be
3) ball's height above the ground should be equal "0"
4)from the last equation we can see 2 zeros
t+3.2=0 and t-5=0, we get t1=-3.2 (that can not be accepted in our case, because time in this case cannot be negative), and t=5.
So at the end we should get this sentence(as I think)
The function h(t)=-5(t+3.2)(t-5) reveals that the ball's height above the ground will be 0 after 5 seconds.
