Answer: The first diagram you selected is the correct visual representation.
Check out the diagram I posted below. The red vertical line is x = 0, aka the y axis. The blue parabola is 3x = y^2. The green horizontal line is y = 6. The region bounded by these curves is the gray shaded region.
Spinning that gray region around the y axis results in the first diagram in your answer choices. The disk in pink is a cross section to help find the volume (through the use of integral calculus).
Answer:
1,9 (900) 9 (90) 8
Step-by-step explanation:
The first nine equals 900, and the second equals 90.
Answer:
x=10
Step-by-step explanation:
- let the first number be x
second number be x+1
third number be x+2.
2. 3(x+x+1)=5(x+2)+3
= 3x+3x+3=5x+10+3
=6x+3=5x+13
=6x-5x=13-3
=x=10
Answer:
17. x = y^2 - 2ay +a^2
18. x = y^2 - a
Step-by-step explanation:
17. Since we want to make x the subject of the formula, we first isolate the square root of x and get
= y - a.
squaring both sides,
x = y^2 - 2ay +a^2
18. Since both x and the a are under the square root, we first start by squaring both sides.
So y^2 = x+a.
Isolating the x, we get
x = y^2 - a
The correct equation would be 21 divided by 7
