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IceJOKER [234]
3 years ago
9

Which is the correct pair?

Mathematics
1 answer:
Art [367]3 years ago
7 0

Answer: D

Step-by-step explanation:

Since we are given that the x value is -1, we can eliminate A and C because the -1 is in the y coordinate.

To find the proper y value, we plug x into the equation.

y=-2x+5                                                 [plug in x=-1]

y=-2(-1)+5                                              [multiply -2 and -1]

y=2+5                                                    [add 2 and 5]

y=7

Now that we have the y value, we know the coordinate (-1,7) which makes D the correct answer.

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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
4 years ago
HELP PLSSSS FAST!!WILL MARK BRAINIEST IF CORRECT!!!!!
andreev551 [17]

Answer:

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5 0
3 years ago
What is the inverse of the function f(x) = 4x - 12
tensa zangetsu [6.8K]

Answer:

y=x+12/4

Step-by-step explanation:

y=4x-12

x=4y-12 (then make y the subject)

x+12=4y(divide both sides by 4)

y=x+12/4

4 0
3 years ago
Read 2 more answers
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Answer:

D

Step-by-step explanation:

find the slope (-3,1), and see the shaded region for if it's over or under the line

7 0
4 years ago
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mr Goodwill [35]

Answer:

A=60 inches by 72 inches

B=increased 600%

Step-by-step explanation:

Scale is 6 times bigger, so 12*6=72

A=60 inches by 72 inches

First painting perimeter: 10+10+12+12=44 inches

Second painting perimeter: 60+60+72+72=264 inches

264/44*100%=600%

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3 years ago
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