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zubka84 [21]
4 years ago
13

I need help pronto please and thank u​

Mathematics
1 answer:
stira [4]4 years ago
4 0

Answer:

Step-by-step explanation:

First you would plot the points- (0,2), (1,4), (2,6), (3,8)  

Then if the points make a straight line when you connect them then it makes it a linear equation

To know if it is proportional or not you take the y points and put them over their x points, and if all of them end up with the same number than it is proportional

2/0=0, 4/1=4, 6/2=3, 8/3=8/3, therefore it is not proportional

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Which of the following polynomials has solutions that are not real numbers?
Nataly [62]
I maybe totally wrong but i want to say either A or C. A nonreal number is any number that when multiplied by itseld produces a negative number.
6 0
3 years ago
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Solve the equation 3m - 7 = 8<br><br> will give brainliest and be grateful!
sertanlavr [38]

Answer:

m=5

Step-by-step explanation:

3(5)=15

therefore,

15-7=8

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3 years ago
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PLEASE HURRY I NEED MY WORK TO BE SHOWN!!!!! 15 POINTS!!! CORRECT ANSWERS ONLY PLEASE!!!
Harlamova29_29 [7]

Answer:

f(-4) = 72, f(x + 5) = 3x² + 23x + 36

Step-by-step explanation:

f(-4) = 3(-4)² - 7(-4) - 4

      = 48 - (-28) - 4

f(-4) = 72

f(x + 5) = 3(x + 5)² - 7(x + 5) - 4

           = 3(x + 5)(x + 5) - 7(x + 5) - 4

           = 3(x² + 10x + 25) - 7(x + 5) - 4

           = 3x² + 30x + 75 - 7x - 35 - 4

f(x + 5) = 3x² + 23x + 36

4 0
3 years ago
Work out the size of the angle marked X.<br> Give your answer correct to 1 decimal place.
rusak2 [61]

Answer:5

Step-by-step explanation:

4 0
3 years ago
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I provided the answers I just need you to show work. I’ll even mark you the Brainliest!
Sindrei [870]

The intercepts and the graph on your worksheet are not correct. Please see below for details:

x^2-2x-3=0 has solutions at x=-1 and x=3 (use the quadratic formula to solve). That means these are the x-intercepts, namely points:

(-1,0) and (3,0).

The y-intercept comes from setting x=0 and calculating the y value:

y=0^2-2\cdot0-3=-3

so the y-intercept is (0,-3).

Now to the graph: Based on the form of the function we can see this is a quadratic function and its graph will be a parabola. You can reformat the expression in the following form

y = x^2-2x-3=(x-1)^2-4

and that will indicate that the apex of the parabola (open up) will be at the point (1,-4).

Knowing the apex, the x intercepts, and the y intercept, we can graph it now.

Graph is in the image attached.

6 0
3 years ago
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