Answer:
Of both boys surveyed, more PREFER JUICE. Of the girls surveyed, more PREFER JUICE. There DOES NOT appear to be an association between gender and beverage preference.
I know I am a bit late, but here is the answer. I know this is the answer because I took the test. I am 100% sure that this is the answer for anyone who wants it. I'm very sorry that I was late for the answer.
The equation is s=144t - 16t², s being the distance and V=144 ft/s
a)The maximum (or minimum) is reached when the derivative of s = 0
s' = 144 - 32t = 0 and t= 9/2 or 4.5 second (time needed to reach the max
Now plug t= 4.5 in the original equation and you will find s = 324 ft
(Why it's a max and not a minimum: because 2nd derivative is negative and equals s" = -32)
b) Velocity of the ball: distance (up) s=320 ft, time that means:
320 =144t - 16t² (solve for x) -16t²+144t-320 = 0, t₁ =4 and t₂ =5 (t₂ is not valid since max time to reach summit is 4.5) so t =4s , distance = 320. so the velocity at 320ft is 320/4 = 80 ft/s
c) Due to the symmetry of the parabola, the velocity at 320 ft on its way down = 80 ft/s
Answer:
1 and 1/8
Step-by-step explanation:
I am pretty sure because I did the math
Answer:
I have no idea
Step-by-step explanation:
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15. 145. 360-90-95-30
16. 90
The other picture number 16 again I already did that one.
