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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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frez [133]


4x+12y=24

12y= 24-4x

y= -3x+2

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3 years ago
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The cost for hiring a car for 2 days in 2018 was Rs. 264 which was 20% more than in 2013. What was the cost of hiring a car for
Goshia [24]

The cost of hiring a car for 2 days in 2013 is Rs. 316.8

<h3>How to find the cost of hiring in 2013 ?</h3>

The cost for hiring a car for 2 days in 2018 was Rs. 264 which was 20% more than in 2013.

Therefore,

cost of hiring for 2018 = Rs. 264

Therefore,

let

cost of hiring in 2013 = 20%(264) + 264

cost of hiring in 2013 = 20 / 100 × 264 + 264

cost of hiring in 2013 = 1 / 5 × 264 + 264

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cost of hiring in 2013 = 52.8 + 264

cost of hiring in 2013 = 316.8

Therefore, the cost of hiring a car for 2 days in 2013 is Rs. 316.8.

learn more on cost here: brainly.com/question/1663590

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7 0
2 years ago
For f(x) = -4x+2 find f(x) when x = -1 A. -2. B. 6 C. -4 D. 2
djverab [1.8K]

Answer:

The answer is letter B which is 6.

f(x) = -4x+2

f(x)=-4(-1)+2

f(x)=4+2

f(x)=6

5 0
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In a recent NFL game, the Green Bay Packers scored 14 points less than the tennessee titans. Write and solve an equation to find
irakobra [83]
So the green bay packers scored 14 less so this means that the Tennessee titans must of had 14 more points than the green bay packers so this means that Tennessee titans had 14+14=28 points
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3 years ago
a dinosaur fossil is 92,170,000 years old. How can you express this age in scientific notation with the highest level of precisi
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