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IrinaK [193]
3 years ago
7

Please help Me anybody plz

Mathematics
1 answer:
Anna [14]3 years ago
3 0
Im honestly not sure but I’m thinking answer A?
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a manned rocket accelerates at a rate of 20 m/s2 during launch How long does it take the rocket reach a velocity of 400 m/s?
marshall27 [118]

Answer:

Step-by-step explanation:

acceleration, a = 20 m/s^2

initial velocity, u = 0 since it starts from rest

final velocity, v = 400 m/s

v = u + at

400 = 0 + 20 t

400 = 20 t

t = 400 / 20

<u><em>t = 20 sec</em></u>

Hope this helps

plz mark as brainliest!!!!

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3 years ago
What is (3-4i)^2? In complex numbers?
ANTONII [103]
(3-4i)^2=9-24i-16=-7-24i
5 0
3 years ago
You are given the dollar value of a product in 2015 and the rate at which the value of the product is expected to change during
Charra [1.4K]

Answer:

V = $3.50t + $90.5....

Step-by-step explanation:

V(t) is a function of t that expresses the value in year 2000+t.  

We know that the increase is $3.50 times t.

So,

V(t) = $3.50t + c  

where c is the constant.

V(15) =  $3.50 (15) + c = $143     [t=15 as mentioned in the question]

and therefore  

c = $143 - $3.50 (15)

c= $143 - $52.50

c= $90.5  

Now we got the value of c. We can write the equation as  

V = $3.50t + $90.5....

4 0
3 years ago
9x+63=100 please answer my question
valina [46]

Answer:

x=3

Step-by-step explanation:

9x+63=100

9x+0=27

9(3)=27

8 0
3 years ago
Compare Elena's and Noah's money using fraction
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Um did you get the wrong picture?
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3 years ago
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