1) Let Sean=x and Tyrone=y. But we want to get what Sean earns and
what Tyrone earns in terms of one variable so we say that Tyrone=x-4.5
(beacuse he makes $4.50 per hour less than Sean).
2) Now set up the equation: 8 hours time x plus 8 hours times x-4.5 equals 284 OR
8x+8(x-4.5)=284
3) Solve for x
8x+8(x-4.5)=284
8x+8x-36=284
16x=320
x=20
So Sean makes $20 per hour and Tyrone makes $15.50 per hour
14 is 28% of the number 50.
Answer:
-1 x - 2
f (x) = -----------
3
Step-by-step explanation:
Then we have y = 3x + 2.
Next, interchange x and y, obtaining x = 3y + 2
Next, solve this result for y: 3y = x - 2; then divide both sides by 3:
y = (x-2)/3
Last, replace "y" with the inverse function label:
-1 x - 2
f (x) = -----------
3
Answer: 19.8 Units
Step-by-step explanation:
The triangle is shown in the attached figure, and have three vertices: 
, 
and 
.
Each vertice represents a point in the cartesian plane and the length of each side of the triangle is the modulus of each vector.
In this sense, the modulus 
is calculated as shown:
Hence, for each vector:
Now, the perimeter of a triangle is the sum of its three sides:
Finally:
Multiply the cost, 120, by 0.07
you will get 8.4
Janet will pay $8.40 in sales tax
