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skelet666 [1.2K]
4 years ago
13

50 POINTS! I MARK BRAINLEST AND SAY THANKS!

Mathematics
2 answers:
STALIN [3.7K]4 years ago
7 0

Hey there!


You said,

What number does y equal?

Y equals 4,5

What number does x equal?

X equals 5,4


They both have variables on  same side, so you can rearrange the equation, or solving for either x or y, and start substituting. Thats how i got the answers.



Hope this helped you. :D

Phantasy [73]4 years ago
5 0
Y *x =20

y +x =9

rewrite 1st eq. as y = 20/x

subsituute that into 2nd eq.

20/x +x =9

multiply each term by X

20 +x^2 = 9x
 subtract 9x from each side:

x^2 - 9x +20 = 0

now factor:

(x-5) (x-4) = 0

solve for x
5-5 = 0
 4-4 = 0

so X can be 4 or 5

replace x into equations and solve for Y

 so when X = 4, Y = 5
 When X = 5, Y = 4

x= 5,4
y = 4,5



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Solve for y. Do not put any spaces in your y=mx+b answer. 3y=2+9 *
horrorfan [7]

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alukav5142 [94]

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5 0
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densk [106]

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49 | 7

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1

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3 years ago
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The equation of a line is<br> -2x+5t=-20 <br>what is the x-intercept of the line?
vampirchik [111]

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8 0
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