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Elenna [48]
3 years ago
7

Which is the solution of the following system of equations: 2x + y = 4 3x – y = - 14

Mathematics
1 answer:
murzikaleks [220]3 years ago
3 0

2x + y = 4 \\ 3x - y =  - 14

Lets add 2 equations

5x =  - 10 \\ x =  - 2

Now we need to put x into any equation

2 \times ( - 2) + y = 4 \\  - 4 + y = 4 \\ y = 8

Answer: (-2; 8)

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Answer:

B.) Addition*Additive property of equality

Step-by-step explanation:

You add 34 to both sides of the equation to find what x was equal to

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A minor league baseball team plays 128 games a seanson. If the tam won 16 more than three times as many games as they lost how m
tiny-mole [99]

Answer: The team won 100 games and losses 28 games

Step-by-step explanation:

Let the number of games won denoted by x and the games lost is denoted by y .

Given : A minor league baseball team plays 128 games in a season.

Team won 16 more than three times as many games as they lost.

Then, the system of equations, we have

x+y=128-------(1)\\\\x=3y+16------------(2)

We can rewrite equation (2) as x-3y=16----------------(3)

Now, Eliminate equation (3) from (1), we get

y-(-3y)=128-16\\\\\Rightarrow\ 4y=112\\\\\Rightarrow\ y=\dfrac{112}{4}=28

Substitute the value of y in (2), we get

x=3(28)+16=84+16=100

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3 years ago
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Two angles that add up to 180 is supplementary 
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If Angela has $500 to invest at 2.5% per annum compounded quarterly, how long will it be
11Alexandr11 [23.1K]
N = number of compounding periods
Years = log (total / principal) / n * log (1 + rate / n)
Years = log (750 / 500) / 4 * log (1 + .025/n)
Years = log (1.5) / 4 * log (1<span><span>.00625) </span>
</span> <span>Years = 0.17609125906 / 4 * 0.0027058933759
</span><span>Years = 0.17609125906 </span> / <span> <span> <span> 0.0108235735 </span> </span> </span>
Years = <span> <span> <span> 16.2692348382 </span> </span> </span>

Source Calculator
http://www.1728.org/compint.htm


5 0
2 years ago
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