Umm, surface area of a cube = 6e^2 (six edge square) which is 6(3)sqaure = 54
You can write the dimensions of the rectangle as (x + 2) and (x - 5), and because the area is base × height, you can multiply the brackets together and make it equal to 56:
(x + 2)(2x - 5) = 56
2x² + 4x - 5x - 10 = 56
x² - x - 10 = 56
Now because you have an x², you need to make the equation equal to 0 so you can factorise, so:
2x² - x - 10 = 56
- 56
2x² - x - 66 = 0
(x - 6)(2x + 11)
So x is 6, because the other option is -5.5 and you cannot have a negative length.
I hope this helps!
Yes, Todd is correct.
y= 2x+2
(1,4)
1=x, 4=y
Plug the numbers in:
4= 2(1)+2
4= 2+2
4=4
Answer:
q= 4xp - 2p² - 4x + 3
p=
Step-by-step explanation:
2x² - 4x + 3 = (x -p) + q
OPEN BRACKET:
2x² - 4x + 3 = 2(x² - 2xp + p²) + q
2x² - 4x + 3 = 2x² - 4xp + 2p² + q
-4x + 3= 4xp + 2p² + q
-q = -4xp + 2p² + 4x - 3
q = 4xp - 2p² - 4x + 3