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8090 [49]
3 years ago
11

Who knows what is the answer?

Mathematics
1 answer:
stich3 [128]3 years ago
3 0
Set x=10 as equation 1 and 3x+5y=20 as equation 2

x=10----------(1)
3x+5y=20-----------(2)

substitute (1) into (2),
3(10)+5y=20
30+5y=20
30–20=–5y
10=–5y
5y=–10
y=–10÷5
y=–2

final ans:(10,–2)

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Answer:

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You just switch it to the opposite part of the fraction, and make the exponent positive.

Click to let others know, how helpful is it

Read more on Webcache.googleusercontent.com - https://webcache.googleusercontent.com/question/10102846#readmore

Step-by-step explanation:

6 0
3 years ago
X2+11x-26=0<br> X2 - 25 = 0
Oksanka [162]
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x = -13
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Pls help me with this one <br><br><br>1,2,3,4​
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Option 2.

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That method is the most random in order to decide what students should take the survey.

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