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Mrrafil [7]
3 years ago
5

Solve please I don’t know how to do this.

Mathematics
2 answers:
nadya68 [22]3 years ago
8 0

Answer:

n=40

Step-by-step explanation:

Solnce55 [7]3 years ago
5 0

Answer:

Step-by-step explanation:

15 = 3/8 n

n = 8/3 * 15

n = 40

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What is the difference between 13:40 and 17: 15
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Answer:

4:25

Step-by-step explanation:

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Find x and y<br><br><br> NEED HELP FASTTTTT
garri49 [273]

Answer:

x=2 y=2

Step-by-step explanation:

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What is the angular velocity of a 6–foot pendulum that takes 3 seconds to complete an arc of 14.13 feet? Use 3.14 for π.
dalvyx [7]
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3 years ago
A ball is thrown into the air with an upward velocity of 36 ft/s. Its height h in feet after t seconds is given by the function
elixir [45]
This can be solved in two ways: With heavy tools or with just algebra. 
What is your level? Have you studied calculus? 

With pure algebra: 
We need to find the maximum of the function <span>h = −16t^2 + 36t + 5
Lets take out -1 for simplicity: 
</span><span>h = −(16t2 - 36t - 5) 
For now lets just work with this: </span>16t^2 - 36t - 5
16t^2=(4t)^2 
(4t-x)^2= 16t^2-2*4xt+x^2
we have -36t so x should be 4.5 as 2*4*4.5=36

Lets see what we have now:
16t^2 - 36t - 5= (4t-4.5)^2 is this true? No but close
(4t-4.5)^2= 16t^2- 2*4*4.5t +4.5^2= 16t^2-36t+20.25

16t^2 - 36t - 5   and 16t^2-36t+20.25 nearl the same just take away 25.25 from the right hand side

Getting long, just stay with me: 
16t^2 - 36t - 5= (4t-4.5)^2 - 25.25

h= -{(4t-4.5)^2 -25.25}
h=-(4t-4.5)^2 + 25.25

We want to find the maximum of this function. -(4t-4.5)^2 this bit is always negative or 0, so it maximum is when it is 0. Solve: 4t-4.5=0
t=1,125
7 0
3 years ago
Brainliest Giveaway!! Also gives all of my points.!!
Tpy6a [65]

Answer:

wf

axStep-by-step explanation:

7 0
3 years ago
Read 2 more answers
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