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maxonik [38]
2 years ago
11

Solve each of the following system of equations by substitution!!! x-5y=-49 y=-2x+1

Mathematics
1 answer:
miss Akunina [59]2 years ago
4 0

Answer:

x = -4, y = 9

or

(-4, 9)

Step-by-step explanation:

x - 5y = -49

y = -2x + 1

substitute y for -2x + 1

x - 5(-2x + 1) = -49

x + 10x - 5 = - 49

add 5 to both sides

x + 10x - 5 + 5 = - 49 + 5

x + 10x = -44

11x = -44

divide both sides by 11

11x/11 = -44/11

x = -4

substitute x for -4 in any of the original equations

y = -2x + 1

y = -2 * -4 + 1

y = 8 + 1

y = 9

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3 0
2 years ago
The ticket to a ballet cost either $25 or $50. A total of 1,250 tickets , worth $50,000, were sold. If x represents the number o
Butoxors [25]

Let's assume

x represents the number of $25 tickets

y represents the number of $50 tickets

A total of 1,250 tickets

so, we get

x+y=1250

So, cost of $25 tickets is 25x

So, cost of $50 tickets is 50y

Total cost of tickets =(cost of $25 tickets)+(cost of $50 tickets)

Total cost of tickets =25x+50y

we are given

worth $50,000, were sold

so, we get equation as

25x+50y=50000

we get system of equations as

x+y=1250

25x+50y=50000..............Answer


3 0
3 years ago
A and b are identical batteries, which is brighter
Elden [556K]
Give better description if they are both identical
3 0
3 years ago
2. A triangle has sides of lengths 15, 23, and 28. Is it a right triangle? Explain.
Mashutka [201]
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8 0
2 years ago
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Zak buys 6 gallons of fruit punch. He has
sesenic [268]
$8.70 is the total cost without the coupons. He gets 6 gallons. He gets $0.55 off per gallon.

To find the total price Zak got off, multiply 6 and $0.55. 6 x $0.55 = $3.30, so he got $3.30 off.

To find the total price. Add the total cost without the coupons + the amount the coupons saved him.
$8.70 + $3.30 = $12

To find the price per one gallon, divide the total price / number of gallons

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2 years ago
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