Answer:
8 hours. maybe 8×4
Step-by-step explanation:
I'm not sure on the last part though
Given the surface area of a cube as
Given Cubes A and B
Find the surface area of the cubes and compare them to know which one is larger
Hence, from the surface area gotten above, Cube B has a larger surface area than Cube A
8(x+1) would be your answer :)
It's really just knowing how to use fractions.
Say you have 8 jelly beans in a baggie. 5 are yellow and 3 are green.
What is the likelihood of pulling a green one out? Not likely.
What is the likelihood of pulling out a white one out? Impossible.
Are you getting it? Or do you need more help? :)
Multiply the first coefficient (3) and the last term (2) to get 3*2 = 6
We need to find two numbers that
a) multiply to 6
AND
b) add to -5 (middle coefficient)
Such two numbers are -3 and -2
-3 times -2 = 6
-3 plus -2 = -5
So we can break up the -5x into -3x-2x and then factor by grouping
--------------
3x^2-5x+2
3x^2-3x-2x+2
(3x^2-3x)+(-2x+2)
3x(x-1)+(-2x+2)
3x(x-1)-2(x-1)
(3x-2)(x-1)
So the two factors are (3x-2) and (x-1)
The answers are A and C
