1. 12 cubes because 3*4 is 12.
2. 48 because 6*8 is 48.
9514 1404 393
Answer:
√21
Step-by-step explanation:
The Pythagorean theorem tells you ...
a^2 +b^2 = c^2 . . . . . for legs a, b and hypotenuse c
a^2 +2^2 = 5^2 . . . . . for leg 2 and hypotenuse 5
a^2 = 25 -4 = 21 . . . . subtract 2^2
a = √21
The other leg has length √21.
Answer:
B. (2a +3b)(4a -c)
Step-by-step explanation:
Group the terms pairwise, then factor each pair.
... (8a² -2ac) +(12ab -3bc)
2a is a common factor in the first pair of terms; 3b is a common factor in the second pair of terms. We can factor those out.
... = 2a(4a -c) +3b(4a -c)
Then we see that (4a-c) is a common factor in the result. We can factor that out.
... = (2a +3b)(4a -c) . . . . matches selection B
5 is not a divisor of any of the dimensions of the given box, so selections A, C, D can't work.
Each of the dimensions of selection B is a divisor of a different dimension of the box, so ...
.. the correct choice is selection B) 7 × 9 × 12.
Answer:
-1-1.6n
Step-by-step explanation:
5+3.2n-6-4.8n
add like terms
-1-1.6n