3 years ago

Y=x+5 4x+y=20 Solving system by substitution

1 answer:

3 0

Y = x + 5....so we sub in x + 5 for y in the other equation

4x + y = 20
4x + x + 5 = 20
5x + 5 = 20
5x = 20 - 5
5x = 15
x = 15/5
x = 3

y = x + 5
y = 3 + 5
y = 8

solution is (3,8)

You might be interested in

Eric has saved $18,300 toward a down payment on a house. He makes a salary of $59,750 a year. What is the maximum Eric could spe

dimaraw [331]

The answer should be B) $119,500. The benchmark is his annual salary, and this amount is twice his annual salary, but not thrice larger. For mortgages, your debt should generally not be larger than three times your gross annual salary.

5 0

3 years ago

Read 2 more answers

Given g(x) = 1/2x+ 5, find the following.<br><br> g(4)<br> g(-10)<br> g(0)

Basile [38]

Answer:

Step-by-step explanation:

6 0

3 years ago

Suponha que uma variável assume os valores: 11 – 8 – 7 – a – 16 – 10 Determine a de modo que a média aritmética seja igual 11.

Elenna [48]

Answer:

a = 14

Step-by-step explanation:

The mean is the sum of the values divided by the number of values.

$\begin{array}{rcl}\text{Mean}&= &\dfrac{11 + 8 + 7 + a + 16 + 10}{6}\\\\\dfrac{52 + a}{6}& = & 11\\52 + a & = & 66\\a & = & 66 - 52\\& = & \mathbf{14}\\\end{array}$