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3 years ago

9

Briefly describe how you would graph in your Algebra class (the x-y coordinate plane?

2 answers:

Dafna11 [192]3 years ago

4 0

So the x=y line on a graph

Nookie1986 [14]3 years ago

4 0

Well there are 4 different quadrants one positive and one negative and two mixed with each, it they are both positive go right and up, if x is positive and y negative then go to the right and down, but if x is negative and y is positive go left and up, but if both are negative go left and down

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How do I solve <br><br> x² - 10x-3=0

evablogger [386]

Answer:

x = 5±2√7

Step-by-step explanation:

This quadratic cannot be factorised via the factorisation method, so we use the quadratic formula :

x = $\frac{-b + \sqrt{b^{2} -4ac} }{2a}$ or x = $\frac{-b - \sqrt{b^{2} -4ac} }{2a}$

(The reason I did 2 equations is because brainliest does not allow me to do the ± in the equation insert thing )

x = $\frac{-(-10) + \sqrt{-10^{2} -4(1)(-3)} }{2(1)}$ or x = $\frac{-(-10) - \sqrt{-10^{2} -4(1)(-3)} }{2(1)}$

x = $\frac{10 + \sqrt{100+12} }{2}$ or x= $\frac{10 - \sqrt{100+12} }{2}$

x = $\frac{10 + {4\sqrt{7}} }{2}$ or x = $\frac{10 - {4\sqrt{7}} }{2}$

x = $5+2\sqrt{7}$ or x = $5 -2\sqrt{7}$

Hope this helped and brainliest please

3 0

3 years ago

What are the coordinates of the image of vertex F after a

Yuri [45]

So F(1,-3) reflect over y= -x which is -> (-y,-x)

The answer is F(3,-1)

Hope this helps!

5 0

3 years ago

Solve for t<br><br><br> 7/3=4/t <br> I NEED HELP PLS

kotegsom [21]

Answer:

T=12/7 For mixed number T=1 5/7 for decimal form 1.7 (7 repeating)

4 0

3 years ago

Write the number in standard notation.

viva [34]

<span>1.14×10^3 = 1.14 x 1,000 = 1, 140

answer
</span><span>1,140</span>

7 0

3 years ago

Get brainiest if right?

aev [14]

Answer:

30 mph

Step-by-step explanation:

train stopped after 520 miles

780 miles to go

stopped at 20 hours

stopped for 4 hours

34 hours used up...

26 hours left

780 miles to go

780 miles/26 hrs = 30 m/hr

5 0

3 years ago