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Cerrena [4.2K]
3 years ago
12

Help me please I need help on this question!!!!!

Mathematics
1 answer:
Liono4ka [1.6K]3 years ago
5 0
The answer is b I think
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when a cannonball is fired, the equation of its pathway can be modeled by h=-16t squared + 128t. find the time it will take for
Rashid [163]
At the time the cannonball reaches the ground, the vertical height of the cannonball from the ground is 0, i.e. h = 0.

Thus, the time it will take the cannonball to reach the ground is given by

-16t^2+128t=0 \\  \\ \Rightarrow t(-16t+128)=0 \\  \\ \Rightarrow t=0\ or\ -16t+128=0 \\  \\ \Rightarrow16t=128 \\  \\ \Rightarrow t= \frac{128}{16} =8

Therefore, it will take the cannonball 8 seconds to reach the ground.
5 0
3 years ago
A 'snail's pace is 60 inches per minute. At this rate how long will it take the snail to crawl 120 feet?
True [87]
Ok, so here, we have the unit rate of the snail. Now, we need to set up a proportion.

60/1 = 120/x

Now, cross multiply.

60*x = 120*1

60x= 120

Now divide to solve for x.

60x/60 = 120/60
x = 120/60 
x= 2

Now our final answer is 2.

Final answer:- The snail will take 2 minutes to crawl 120 feet

5 0
3 years ago
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Two families are vacationing together, driving in separate cars. The Harris family averages 40 mph, leaving Hometown 12 minutes
andrey2020 [161]
I believe, if I'm not correct but I think the answer would be 8 minutes or less.. Considering the fact that the Harris Family left 12 minutes ahead and the Arlen family is Averaging 55 MPH.. Too the speed that the Arlen's are going make the time for them to catch up to the harris's shorter. The Arlen's are going 15 mph faster sooo.. Yeah.. Tell em if this helps! :D
8 0
3 years ago
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Sue has 18 CDs and 30 DVDs. He wants to place them onto the greatest number of shelves so that each shelf has the same number of
frez [133]
Cds 3 dvds 5

Sue will use 6 shelves with 3 cds on each and 5 dvds on each.
8 0
3 years ago
Factor 1/6 out of 1/6x+1/6
lesya692 [45]

Answer:

1/6(1x+1)

Step-by-step explanation:

8 0
3 years ago
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