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3 years ago

How do you know if a coordinate on a graph is positive or negative?

Mathematics

2 answers:

andrey2020 [161]3 years ago

7 0

The positive is on the top right hand corner and the negative is the left lower corner.

Annette [7]3 years ago

5 0

Negative Slope. If a line has a positive slope (i.e. m > 0 ), then y always increases when x increases and y always decreases when x decreases. Thus, the graph of the line starts at the bottom left and goes towards the top right. Thus, as x increases by 3 , y decreases by 4 , and as x decreases by 3 , y increases by 4 .

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What are the roots to the equation 2x² + 6x-1=0?

lys-0071 [83]

Answer:

The roots of equations are as m = $\frac{-3}{2} + \frac{\sqrt{11} }{2}$ And n = $\frac{-3}{2} - \frac{\sqrt{11} }{2}$

Step-by-step explanation:

The given quadratic equation is 2 x² + 6 x - 1 = 0

This equation is in form of a x² + b x + c = 0

Let the roots of the equation are ( m , n )

Now , sum of roots = $\frac{ - b}{a}$

And products of roots = $\frac{c}{a}$

So, m + n = $\frac{ - 6}{2}$ = - 3

And m × n = $\frac{ - 1}{2}$

Or, (m - n)² = (m + n)² - 4mn

Or, (m - n)² = (-3)² - 4 ( $\frac{ - 1}{2}$ )

Or, (m - n)² = 9 + 2 = 11

I.e m - n = $\sqrt{11}$

Again m + n = - 3 And m - n = $\sqrt{11}$

Solving this two equation

(m + n) + ( m - n) = - 3 + $\sqrt{11}$

I.e 2 m = - 3 + $\sqrt{11}$

Or, m = $\frac{-3}{2} + \frac{\sqrt{11} }{2}$

Similarly n = $\frac{-3}{2} - \frac{\sqrt{11} }{2}$

Hence the roots of equations are as m = $\frac{-3}{2} + \frac{\sqrt{11} }{2}$ And n = $\frac{-3}{2} - \frac{\sqrt{11} }{2}$ Answer

6 0

3 years ago

CAN SOMEONE HELP ME ASP ITS IS DUE IN 10 MINUTES?!?!?

e-lub [12.9K]

Answer:

x = 36

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

richard type a 1,200 word essay in 25 minutes.At this rate,determine how many words he can type in 45 minutes.... Guys plz help

sweet [91]

So, we divide 1200 by 25 to find out how many words per minute he types. 1200 / 25 = 48 So, he types 48 words per minute. Now, we multiply this by 45 to find out how many words he can type in 45 minutes. 48 x 45 = 2,160 Joseph can type 2,160 words in 45 minutes!

8 0

3 years ago

)Maxine spent 15 hours doing her homework last week. This week she spent 18 hours doing homework. She says that she spent 120% m

Vlad1618 [11]

Answer:

No she isnt

Step-by-step explanation:

12.5% is for a hour, so if Maxine did 3 hours more than that would be (12.5x 3 ) 37.5%

4 0

3 years ago

243.875 rounded to the nearest whole number

artcher [175]

243.875 = 244 <== rounded to the nearest whole number

3 0

3 years ago

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