Let x = Mrs. D's salary last year
13% = 13/100 = 0.13
6500 is 13 percent of Mrs. D's salary, so:
0.13(x) = 6500
0.13(x)/0.13 = 6500/0.13
x = 50,000
Mrs. D's salary last year was 50,000 dollars.
<span>Solve the following system of equations by linear combination:
3x + 2y = 7
y = x – 4
</span><span>3x+2(x-4)=7 now solve for x
3x+2x-8=7
combine terms
5x-8=7
add 8
5x=15
divide by 5
x=3
plug that into the second equation
y=3-4
y=-1
solution
(3,-1)</span>
Answer:
x=20
Step-by-step explanation:
bc 25 divided by 10 is 2.5 so you just multiply 8 by 2.5
Answer:
Simplify the expression.
3
x
−
11
Step-by-step explanation:
Answer: (-3, -8) (0, 1) (-3, -8)
Step-by-step explanation:
So in the equation, y=3x+1, 1 is the y intercept (which is where the line goes through the y intercept, so graph a point at 0,1 (that also fills out the middle of the chart. 3 is the slope of the equation so then you have to use the slope and you will find 2, 7 as a point and -3, -8 as a point.
Hope that helps! :)