Answer: 
Step-by-step explanation:
You need to set up two cases (Positive case and negative case) and solve for "x".
- POSITIVE CASE IF: 
- NEGATIVE CASE IF: 
Therefore, the solution is:
We know that:
Area= length*width
Plug in the stuff you know.
35= length(tall)*5
Divide both sides by 5.
7= length
The photo is 7 inches tall.
I hope this helps!
~kaikers
Answer:
7. x = 3
Step-by-step explanation:
To find the value of x, use the triangle sum property. Every triangle has interior angles which add to 180 degrees. To solve, add the expressions and numbers together then set equal to 180. Then use inverse operations to solve for x.
7. 20x - 9 + 10x + 9 + 90 = 180 Subtract 90 from both sides.
20x - 9 + 10x + 9 = 90 Add -9 + 9 = 0
20x + 10x = 90 Add like terms 20x + 10x = 30x
30x = 90 Divide both sides by 30.
x = 3
Repeat this process for each problem.
4(3-7x). Since there are 4 sides in a square, you multiply one length by 4 to get the perimeter. 4(3-7x) simplifys to 12-28x.
Answer:
V= 57.8 cm^3
Step-by-step explanation:
i had the same question and got it wrong and it showed me the correct answer so basically
V=1/3(11.56(15)
V=57.8
