Solve the system of linear equations by using the substitution method. Write your answer as a coordinate/point. (20 points)

Mathematics

1 answer:

Inessa [10]1 year ago

8 0

Answer:

(1,10)

Step-by-step explanation:

Substitute the value of y so you get -5x+15=-2x+12. Then solve you get x=1. Substitute x as 1 in the equation y=-2x+12 so you get y=10

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kirill115 [55]

Answer:

Step-by-step explanation:

I have no idea what formula that is you're using but the one I teach in both algebra 2 and in precalculus for continuous compounding is

$A(t)=Pe^{rt}$

where A(t) is the amount after the compounding, P is the initial investment, ee is Euler's number, r is the interest rate in decimal form, and t is the time in years. If our money doubles, we just have to come up with a number which will be P and then double it to get A(t). It doesn't matter what number we pick to double, the answer will come out the same regardless. I started with 2 and then doubled it to 4 and filled in the rest of the info given with time as my unknown:

$4=2e^{(.062)(t)}$