For #31 you would make two squares on the left and right side and then four rectangles in the middle
Answer:
B is the answer
Step-by-step explanation:
Pythagoras: a^2+b^2=c^2
a=b=2
2^2+2^2=c^2
4+4=c^2
8=c^2
√8=c
√(4*2)=c
2*√2=c=x
so it's the third option
Use a calculator.
14.1 divided by 2.35 = 6
Answer:
(1, -9)
Step-by-step explanation:
4x + y = -5
8x + 3y = -19
If we have to use elimination, that means we're going to add or subtract these two whole equations by each other so that we can cancel out one of the variables.
I think that we could easily turn 4x into 8x if we multiply the top equation by 2.
4x + y = -5 ---> 8x + 2y = -10
Now put them next to each other, and subtract to get rid of the xs.
8x + 2y = -10
- 8x + 3y = -19
------------------------
0x - y = -10 - -19
-y = 9
y = -9
Plug this back in to get x.
4x + y = -5
4x - 9 = -5
4x = -5 - -9
4x = 4
x = 1
