For a, you could use the volume of a sphere divided by two to solve for a dome (like when you cut a sphere in half).
For b, you could use the volume of a rectangular prism divided by three when solving for a rectangular pyramid.
This is because the volume for a rectangular prism is V=lwh, and for a rectangular prism the volume is V= (1/3)lwh
2x+y=1 can be rewritten as y=-2x+1, with the slope as -2 and the y-intercept at 1. The equation you can use for the table would be (x*-2)+1, or you can just use this:
-2=5
0=1
3=-5
(-2, 5)
(0, 1)
(3, -5)
(w^2+5w) + (2w^2 +w +7)
when adding or subtracting polynomials, just combine the like terms from each set:
w^2 + 2w^2 = 3w^2
5w +w = 6w
so you would have : 3w^2 + 6w + 7
Answer:
x+4y=-35
-8x-4y=28
Step-by-step explanation:
The answer to the original equations is (1, -9). You can solve that by using substitution by moving the 4y over and substituting that equation for x on the second part of the top equation. Using elimination, the second set of answers will give you the same, (1, -9)!