For the 1st one we need to solve x. x-y=2 step1: x-y+y=2+y answer: x=y+2
Let
x -----> the number
we know that
The algebraic expression of the problem is giving by
x^2 -----> square a number
then
square root of the result
so

therefore
The final result is the same original number
Answer) C. 77
This picture shows how I got to the answer. You must set up the two expressions to equal each other and then solve for X
Answer: 306in^3
method: I would split the cross-section (the trapezium at the front) into two shapes. You first have your rectangle with dimensions of 4 and 7, and your triangle with dimensions of height 4 and base 3 (10 - 7 = 3). 4 × 7 = 28in^2, 4 × 3 = 12, 12 ÷ 2 = 6in^2. The total surface area of the cross-section is therefore 6 + 28 = 34in^2. Now, to find the volume, you just multiply that by 9 which is 306in^3, which is your answer. I hope this helps!
Answer:
(4,-10)
Step-by-step explanation: