Explain what the solution to a system of equations is:

1 answer:

3 0

A solution to a system of equations is a set of values for the variable that satisfy all the equations simultaneously. In order to solve a system of equations, one must find all the sets of values of the variables that constitutes solutions of the system.

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You have $250,000 in an IRA individual Retirement Account at the time you retire. You have the option this money in two funds: F

love history [14]

So to start off with this problem, let us call the amount invested in Plan A and B as a and b respectively.

So equation 1: a + b = 250,000

Next, we need to get an equation which is equal to 10,000. So the interest rate in plan a + interest rate in plan b would be equal to 10,000. Rewriting this sentence will give us:

Equation 2: .028a + 0.078b = 10,000

Rewrite the first equation into a = 250,000 - b, and then plug the value into equation 2.

.028(250,000 - b) + 0.078b = 10,000

7,000 - 0.028b + 0.078b = 10,000
-0.028b + 0.078b = 10,000 - 7,000
0.05b = 3,000
b = $60000 amount invested at 2.8% while
250,000 - 60,000 = $190,000 is the amount invested at 7.8%

3 0

3 years ago

Show the correct way to write the numerical expression of 3×14+9

Sergio039 [100]

Answer:

(3 x 14) + 9

Step-by-step explanation:

4 0

4 years ago

Alguien puede ayudarme con esto por favor necesito el procedimiento

sasho [114]

en la primera

es -2x+7=13, suma 13 con 7 para q tengas 20 y el negativo dos x es la otra asi agarras -2=20 ahora dividelo los dos por 2 te sale 0 para el negativo dos y divide 20/2 son X=10

5 0

4 years ago

Find an ordered pair for 4 solution for -5x+y=6

grin007 [14]

⇒ Choose three values for $x$ and substitute in to find the corresponding $y$ values.