Answer:
![q=3+0.5r](https://tex.z-dn.net/?f=q%3D3%2B0.5r)
Step-by-step explanation:
Given the equation with two variables
![10q-5r=30](https://tex.z-dn.net/?f=10q-5r%3D30)
You have to rearrange this equation so the variable
is independent variable. If
is independent variable, then variable
must be expressed in terms of
.
Add
to both sides of equation:
![10q-5r+5r=30+5r\\ \\10q=30+5r](https://tex.z-dn.net/?f=10q-5r%2B5r%3D30%2B5r%5C%5C%20%5C%5C10q%3D30%2B5r)
Divide this equation by 10:
![\dfrac{10q}{10}=\dfrac{30+5r}{10}\\ \\q=\dfrac{30}{10}+\dfrac{5r}{10}\\ \\q=3+0.5r](https://tex.z-dn.net/?f=%5Cdfrac%7B10q%7D%7B10%7D%3D%5Cdfrac%7B30%2B5r%7D%7B10%7D%5C%5C%20%5C%5Cq%3D%5Cdfrac%7B30%7D%7B10%7D%2B%5Cdfrac%7B5r%7D%7B10%7D%5C%5C%20%5C%5Cq%3D3%2B0.5r)
Answer:
<u>32</u>
Step-by-step explanation:
I proceeded to divide the shape up into 2 triangle and 1 square. The added sum of the 2 divided triangles is 16 and the square is 16. Add those to to get <u>32</u>.
The following shape is a trapezoid
area formula:
A=
A=
A= (4)(12+4)
A= (4)(16)
A= (4)(16)
A= (64)
A=32
Also, is that Khan Academy?
Answer:
1. A = 4 + 3t ............ 1
B = 12 + 2t .............. 2
2. 8 hours
Step-by-step explanation:
For park A,
A = 4 + 3t ............ 1
where A is the amount paid, and t is the number of hours.
For park B,
B = 12 + 2t .............. 2
where B is the amount paid, and t is the number of hours.
The hours that would make A = B can be determined as follows.
Equate 1 and 2, so that;
A = B
4 + 3t = 12 + 2t
collect like terms
3t - 2t = 12 - 4
t = 8
The number of hours that would make the cost of each garage the same is 8.
Answeer
4/3
Step-by-step explanation:
STEP
1
:
Equation at the end of step 1
(((3 • (x3)) - 13x2) + 18x) - 8 = 0
STEP
2
:
Equation at the end of step
2
:
((3x3 - 13x2) + 18x) - 8 = 0
STEP
3
:
Checking for a perfect cube
3.1 3x3-13x2+18x-8 is not a perfect cube