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juin [17]
3 years ago
9

I need help and an explanation, i dont quite get it

Mathematics
1 answer:
mr Goodwill [35]3 years ago
4 0
So the y axis is the vertical line and the x axis is the horizontal line. There are also four quadrants, the top right one is quadrant one, the top left one is quadrant two, the bottoms left one is quadrant three, and the bottom right one is quadrant four. Since all of your pairs are positive you will only use quadrant one to plot your points. X is the top line on that little table that shows all of the number pairs. So the first pair to plot on the graph is (2,1) you would count two points right on the x axis and the one up on the y axis. Do you understand that? Let me know it’s a little confusing, the x always go first and I just showed you how to do one of those. Can you mark brainliest by any chance?
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svetlana [45]
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7 0
3 years ago
Whoops i forgot to read the lesson :P 30 points
andriy [413]

Step-by-step explanation:

I'll do 2.

Alright,Alex let say we have factored a quadratic into two binomial, for example

(5x + 3)(6x - 4)

If we set both of those equal to zero

(5x + 3)(6x + 4) = 0

We can used the zero product property in this case to find the roots of the quadratic equation.

This means that

if  \: ab = 0 \: then \: a = 0 \: and \: b = 0

This means we set each binomal equal to zero to find it root.

5x + 3 = 0

5x =  - 3

x =  -  \frac{3}{5}

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6x =  - 4

x =  -  \frac{2}{3}

So our roots are negative 3/5 and negative 2/3 using zero product property

6 0
3 years ago
Increase £30 by 2/5?
Sergeu [11.5K]
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£42
6 0
3 years ago
You have 1240 acres of land, and each acre is worth $52. How much is your land worth in total?
murzikaleks [220]
If one acre is $52, you would multiply 1240 by 52. Your land in total is worth $64,480.
5 0
3 years ago
Assume that adults have IQ scores that are normally distributed with a mean of 101.3 and a standard deviation 19.9. Find the fir
AnnyKZ [126]

Answer:

87.9

Step-by-step explanation:

Use a calculator or table to find the z-score that corresponds to 25%.

P(Z < z) = 0.25

z = -0.675

Now find the value that corresponds to that z score.

z = (x − μ) / σ

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x = 87.9

4 0
3 years ago
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