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valentinak56 [21]
2 years ago
10

Solve each system using substitution or additions (elimination). -x+2y=-1 5x-10y=6

Mathematics
1 answer:
NNADVOKAT [17]2 years ago
8 0

Answer:

Step-by-step explanation:

L1 -x + 2y = -1

L2 5x - 10y = 6

-x + 2y = - 1 multiply by -1

x - 2y = 1 multiply by 5

5x - 10y = 5 is similar that 5x - 10y = 6

The system has no solution

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Steve and Ben have some money in their wallets. If Steve gives Ben $3, Ben will have twice as much as Steve. If Ben gives Steve
Zigmanuir [339]

Answer:

Money owned by Steve = $11

Money owned by Ben = $13

Step-by-step explanation:

Let x denotes the money owned by Steve and y denotes the money owned by Ben.

Then, Steve gives $3 to Ben

Money left with Steve = x-3 and Ben = y+3

Now, Ben will have twice as much as Steve.

⇒ y+3  = 2(x-3) .............(1)

If Ben gives Steve $7

Money left with Steve = x+7 and Ben = y-7

Then,  the amount Ben has will be one-third that of Steve’s.

⇒ y-7 = \frac{1}{3} (x+7) ..........(2)

Solving equation (1) and (2) by elimination method, we get

x = 11 and y = 13

⇒ Money owned by Steve = $11

Money owned by Ben = $13

5 0
3 years ago
Help pls I need help lol it’s quite easy for rlly smart ppl
mr_godi [17]

Answer:

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Just line up the dots on the x axis and y axis

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8 0
3 years ago
3. A building stands on level ground. The measure of the angle of elevation of the top of the building, taken at a
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Answer:

12,400

Step-by-step explanation:

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C

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Pentagon

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