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AlladinOne [14]

3 years ago

15

Determine whether or not the following graph represents two quantities that are proportional to each other. Explain your reasoni

ng.

1 answer:

m_a_m_a [10]3 years ago

4 0

Answer:

Not proportional.

Step-by-step explanation:

The values do not begin from a straight line at the origin. X begins at 2, not the origin.

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(2x+1)(2x-1) find the product

VladimirAG [237]

Difference of 2 perfect squares
a^2-b^2=(a-b)(a+b)
recognize that

(2x+1)(2x-1)
(a+b)(a-b)
therefor
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3 years ago

System of equations

nalin [4]

Answer:

The solution of the system of equations is the point (-3,0)

Step-by-step explanation:

we have

$-3x+y=9$ -----> equation A

$2x-y=-6$ -----> equation B

Adds equation A and equation B

$-3x+y=9\\2x-y=-6\\------\\-3x+2x=9-6\\-x=3\\x=-3$

Find the value of y

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$y=9-9=0$

The solution of the system of equations is the point (-3,0)

4 0

3 years ago

What value of a makes the equation true 3(a+1.5)=-1.5

Mariana [72]

3* (a + 1,5) = - 1,5 [:3
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7 0

3 years ago

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The first part of a trip driving at 40 mph was 15 miles longer and took 30 minutes longer than the second part of the trip drivi

kenny6666 [7]

Answer:

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Step-by-step explanation:

There are two simultaneous equations . Remeber that v=d/t, 1hour = 60 minutes.

1. 40 = (d+15)/(t+0.5)

2. 50 = d/t

solving: d= 25 miles and t=0.5 hours.

The distance traveled is:

D=d+d+15

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irakobra [83]

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