Step-by-step explanation:
The product of the sum of a and b and their difference:
(a + b)(a - b) = a² - b²
Proof:
L = (a + b)(a - b) <em>use FOIL</em>
L = (a)(a) + (a)(-b) + (b)(a) + (b)(-b)
L = a² - ab + ab - b² <em>combine like terms</em>
L = a² - b² + (-ab + ab)
L = a² - b²
R = a² - b²
L = R
Answer:
12
Step-by-step explanation:
A= (h)(b)/2 = 4×6/2=12
I got the six for the base and 4 for the height. You multiply 4×6 which is 24 and divide by 2 which is 12
Answer:
23 floors
Step-by-step explanation:
Subtract 7 from 30:
30 - 7
= 23
So, she traveled 23 floors.
Answer:
-6 2/3, 1.56, |-3|, 5
Step-by-step explanation:
Answer: WZ
The sequence ABCD has AD as the first and last letters of that sequence, so this pattern applies to WXYZ as well to pull out WZ. Angle A pairs up with angle W because they are both the first letters of the sequences. These angles are congruent from the fact that the parallelograms are similar. The same can be said for angle D and angle Z.
note: WZ is the same as ZW. The order doesn't matter when it comes to labeling segments based on endpoints.
