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Kobotan [32]
3 years ago
12

−2x+7y=10 minus 3x+7y=2

Mathematics
1 answer:
viva [34]3 years ago
3 0

Answer:

I would multiply the first equation by −4 and the second by 3 and add together the two equatins (in columns): ... Step 2. Prepare the equations. Multiply every term in each equation by a ... Subtract Equation (4) from Equation (3). ... How do you solve the system 5x−10y=15 and 3x−2y=3 by multiplication?

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HELP ASAP WILL MARK BRAINLY
vodomira [7]

Answer:

\frac{61}{99}

Step-by-step explanation:

let x = 0.616161 (etc.)

make a second equation because you multiply by 100:

100x = 61.616161 (etc.)

subtract from each other

100x = 61.616161

     x =  0.616161

you get

99x = 61

solve for x

\frac{61}{99}

5 0
4 years ago
If f(a)=(a•a•a)-(a•a) + a-1 what is the value of f(-3)?
Elena L [17]

Answer:

-40

Step-by-step explanation:

f(a) = a³ - a² + a - 1

f(-3) = (-3)³ - (-3)² + (-3) - 1

f(-3) = (-27) - (9) + (-3) -1

f(-3) = -27 - 9 -3 - 1

f(-3) = -40

3 0
3 years ago
Read these sentences from the text.
chubhunter [2.5K]

Answer: Hi! I would say it is D because the other answers really don’t make sense. And the passages said that they were rated low for air quality.

Step-by-step explanation:

I hope this helps!

3 0
3 years ago
PLEASE HELP 11 POINTS FOR THE CORRECT ANSWER
Nady [450]

Answer:

\sqrt{43}

Step-by-step explanation:

3 0
2 years ago
Whats the value of d ?
Ilia_Sergeevich [38]

Hope this helps

Answer: I think 66

Step-by-step explanation:

40 + 26 = 66

8 0
3 years ago
Read 2 more answers
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