3x = 4y
X+y = 21
Multiply second equation by 3
3x+3y= 63
Substitute 3x with 4y
4y + y = 21
5y = 21
Y=4.2
X + 4.2 = 21
x= 16.8
Answer:
Below.
Step-by-step explanation:
That will be the angle whose tangent is 45/29
That is 57.2 degrees.
(x + 1) / 5 = (x + 5) / 7
cross multiply
(x +1) x 7 = 5 x (x + 5)
7x + 7 = 5x + 25
take the like terms to one side
7x - 5x = 25 - 7
2x = 18
divide by 2 to isolate x
2x / 2 = 18 / 2
x = 9
check:
9 + 1 / 5 = 9 + 5 / 7
10 / 5 = 14 / 7
2 = 2
To find how much the real estate agent made, we must multiply the two.
Note: It is crucial that you put 7% as a decimal.
Therefore, the real estate agent made $14,742
Hope this helps!