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IrinaK [193]
3 years ago
9

Help please i need some help

Mathematics
1 answer:
laiz [17]3 years ago
4 0
#1: -13

#2: 169

#3: 56.333...

hope this helps xoxo
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A ball is thrown into the air and its position is given by h ( t ) = − 6.3 t 2 + 53 t + 24 where h is the height of the ball in
nordsb [41]

Answer:

h'(t) = -12.6 t +53

Now we can set up the derivate equal to 0 and we have:

-12.6 t +53 = 0

And solving for t we got:

t = \frac{53}{12.6}= 4.206

For the second derivate respect the time we got:

h''(t) = -12.6

So then we can conclude that t = 4.206 is a maximum for the function.

And the corresponding height would be:

h(t=4.206) = -6.3(4.206)^2 +53*4.206+24= 135.468 ft

So the maximum occurs at t = 4.206 s and with a height of 135.468 m

Step-by-step explanation:

For this case we have the following function:

h(t) = -6.3t^2 +53 t+24

In order to maximize this function we need to take the first derivate respect the time and we have:

h'(t) = -12.6 t +53

Now we can set up the derivate equal to 0 and we have:

-12.6 t +53 = 0

And solving for t we got:

t = \frac{53}{12.6}= 4.206

For the second derivate respect the time we got:

h''(t) = -12.6

So then we can conclude that t = 4.206 is a maximum for the function.

And the corresponding height would be:

h(t=4.206) = -6.3(4.206)^2 +53*4.206+24= 135.468 ft

So the maximum occurs at t = 4.206 s and with a height of 135.468 m

8 0
3 years ago
Make v the subject of the relation KE = ½mv²
Irina18 [472]

Answer:

v=\sqrt{\frac{2KE}{m} }

Step-by-step explanation:

KE = 1/2mv^2

KE/1/2=mv^2

2KE=mv^2

2KE/m=v^2

\sqrt{2KE/m} =v

7 0
3 years ago
Read 2 more answers
C+1/c-2 =4/7 these are both fractions can you please show your work
vladimir1956 [14]
Yes, I can! If you have any more questions, please ask!

5 0
3 years ago
Plzzzzzzzzzzzzzzzzaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
erastovalidia [21]

Answer:

Option A

Step-by-step explanation:

Number of employees exceeded their sales quota = 17

Number of employees met their sales quota = 13

Number of employees didn't exceed their sales quota = 3

Now, we need to find the ratio of the number employees who exceeded their sales quota to the number of employees who didn't exceed their sales quota,

17:13 + 3\\=17:16

So, Option 'A' is correct.

Please mark as Brainliest!!

3 0
2 years ago
Plz help me 25y−4+7−910y =
Elena-2011 [213]

Answer:

-885y+3

Step-by-step explanation:

3 0
3 years ago
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