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never [62]
3 years ago
6

Please... time is almost up somebody?

Mathematics
1 answer:
Leya [2.2K]3 years ago
6 0
5. 80, 16/.2=80
6. 679, 750-70.75
7. 7.82, 10-2.18
8. 36.07, 29.62+1.29+ 1.29+ 1.29+ 1.29+ 1.29
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A particle moves in a straight line so that its velocity at time
riadik2000 [5.3K]

Answer:

s(2) = 7.75

Step-by-step explanation:

given the velocity v(t) = t^3

we can find the position s(t) by simply integrating v(t) and using the boundary conditions s(1)=2

s(t) = \int {v(t)} \, dt\\ s(t) = \int {t^3} \, dt\\s(t) = \dfrac{t^4}{4}+c

we know throught s(1) = 2, that at t=1, s =2. we can use this to find the value of the constant c.  

s(1) = \dfrac{1^4}{4}+c\\4 = \dfrac{1^4}{4}+c\\c = 4-\dfrac{1}{4}\\c = \dfrac{15}{4} = 3.75

Now we can use this value of t to formulate the position function s(t):

s(t) = \dfrac{t^4}{4}+\dfrac{15}{4}\\

this is the position at time t.

to find the position at t=2

s(2) = \dfrac{2^4}{4}+\dfrac{15}{4}\\

s(2) = \dfrac{2^4}{4}+\dfrac{15}{4}\\

s(2) = \dfrac{31}{4} = 7.75

the position of the particle at time, t =2 is s(2) = 7.75

3 0
3 years ago
ANSWER AND EXPLAIN I’LL MARK BRAINLIEST PLEASE THANK YOU
Charra [1.4K]

Answer:

(x,y) = (2 - 1)

Step-by-step explanation:

2x - y = 5

5x + 2y = 8

y + 2x = 5

2y + 5 x = 8

(couldnt upload a pic)

I tried to answer as best as I can, please mark brainliest!

7 0
3 years ago
Simplify the expression (-502) square root 0
Firdavs [7]

Answer:

-502\sqrt 0 = 0

Step-by-step explanation:

Given

-502\sqrt 0

Required

Simplify

-502\sqrt 0

----------------------------------------

\sqrt 0 = 0

----------------------------------------

So:

-502\sqrt 0 = -502 * 0

-502\sqrt 0 = 0

7 0
3 years ago
Distribute -9 (-4+8) please and thank you
qaws [65]

Answer:

36-72

Step-by-step explanation:

all you do is multiply the -9 by the numbers in the parenthesis. If you are multiplying two negatives or two positives then the outcome if positive.  If you multiply a positive and a negative the outcome is negative.

5 0
3 years ago
A bag contains 3 white marbles and 6 black marbles. You pick out a marble, record its color, and put the marble back in the bag.
VARVARA [1.3K]
24 times you'd theoretically draw a black marble.
There is 9 marbles in the bag. Out of the 9, 6 are black so you have a \frac{6}{9} chance to draw a black marble. \frac{6}{9} multiplied my 36 is 24.(For this short cut, you multiply the favorable event's probability by the number of trials.)
3 0
4 years ago
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