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Korvikt [17]
2 years ago
10

14) The height, h metres, of a ball projected directly upwards from the ground can be modelled by h = 56t - 71, where t is the t

ime in seconds after it leaves the ground. a) Find the height of the ball 3.5 seconds after it leaves the ground. b) At what time will the ball strike the ground again? c) When will the ball be 49 m above the ground? Briefly explain why there are two possible answers.​
Mathematics
1 answer:
Agata [3.3K]2 years ago
6 0
Okay the height would be nice if it would have to come
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Pls answer quickly :)
baherus [9]

Answer:

median=mode

Step-by-step explanation:

7 0
2 years ago
75 miles in 3 hours ; 140 miles in 4 hours
weeeeeb [17]

Answer:

no

Step-by-step explanation:

75:3=25:1

140:4=45:1

5 0
2 years ago
The equation below can be used to find the length of a foot or forearm when you know one or the other. (length of the foot) = 0.
3241004551 [841]
This is child's play. 

So, basically:
Y=Length of foot
X= Length of your forearm. 
This is simple. Your equation is Y=0.860x + 3.302
So, if you have a forearm (x) that is 17 inches long, then plug in x as 17. This leaves you to evaluate for Y.
New equation: Y=0.860(17) +3.302
Work it out, you get: Y=14.62 + 3.302
Work that out, you get: Y= 17.922 inches long. 
And of course, Y is the foot.

So, your answer: If the forearm is 17 inches long, then the foot is 17.922 inches long. Simple.

So, part 2:
Rate of change. Well, you need slope then, because that's the same thing.
Y=mx+b, Where m=slope
Your answer turns to be 0.860 inches per length of arm, for rate of change.

Skipping the data, as that's only something you'd know.

Yes, it is indeed a function. There can't be any exponents greater than 1 on the placeholder, and it's obviously not a straight line if you plug it in. 

So yeah, it's a function.

~Hope this helps m8







5 0
2 years ago
Read 2 more answers
13yd of circumference
gogolik [260]

Answer:

look it up mf

Step-by-step explanation:

3 0
3 years ago
The instructions are:
Darina [25.2K]
Comment if you need clarification!

5 0
3 years ago
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