Mathematics, 31.03.2020 07:31 chandranewlon

4x + 5y = 3
2x + 3y = 1

Answers: 2

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I'm assuming that you want to solve for both variables. In this scenario, the subtraction method will likely be your best choice.

Let's start off by multiplying all numbers in the second equation by -2:

4x + 5y = 3
-4x -6y = -2

(Add these two equations)
0x -y = 1
y = -1

Now that we know the value for 'y,' we can input it into one of the equations to solve for x:

4x + 5y = 3
4x + 5(-1) = 3
4x - 5 = 3
4x = 8
x = 2

x = 2, y = -1

Let me know if you'd like me to explain anything I did here.

Answer from: Quest

21, i'm pretty sure it's right lol

Answer from: Quest

step-by-step explanation:

i found the life tables for the year 2012.

life table of males at age 30. probability of dying between ages x and x+1

total population:

29–30 . . . . . . . . . . . . 0.001030

30–31 . . . . . . . . . . . . 0.001061

males:

29–30 . . . . . . . . . . . . 0.001420

30–31 . . . . . . . . . . . . 0.001448

white population

29–30 . . . . . . . . . . . . 0.001005

30–31 . . . . . . . . . . . . 0.001037

white males

29–30 . . . . . . . . . . . . 0.001372

30–31 . . . . . . . . . . . . 0.001399

non hispanic white population

29–30 . . . . . . . . . . . . 0.001083

30–31 . . . . . . . . . . . . 0.001116

non hispanic white males

29–30 . . . . . . . . . . . . 0.001477

30–31 . . . . . . . . . . . . 0.001503

jacob, non hispanic white male. 30 years old.

probability that jacob lives to be 30 years old.

since the given probabilities are probabilities of dying, i think we simply subtract it from 1 to get the probability of living. we will use the probability of non hispanic white male.

probability of living to be 30 y.o.

29 - 30 : 1 - 0.001477 = 0.998523

30 - 31 : 1 - 0.001503 = 0.998497

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4x + 5y = 3
2x + 3y = 1...

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