Answer:
(x+11)(x-11)
Step-by-step explanation:
A ^2 - B ^2 =(A+B) (A-B).. (*)
x^2 - 121=
x^2 - 11^2=(*)
(x+11)(x-11)
Answer:
k < - 1
Step-by-step explanation:
28 + 3k < 5(-3-8k)
28 + 3k < - 15 - 40k
28 + 15 < - 40k - 3k
43 < - 43k
43/- 43 > k (switch signs because 43 is negative)
k < -1
Answer:
AB = 25
Step-by-step explanation:
First things first, we know that these triangles are similar. Now let's find BC using the Pythagorean Theorem. BC =
, this side is similar to the 5 side of the smaller triangle. That means each side of the larger triangle
times larger than the corresponding side on the small triangle. That means AB is
times larger than BC as well. So multiply BC by
get us the answer.
Answer: The largest you can't make is 7 cents.
Step-by-step explanation:
Once you get 3 consecutive amounts, you can get all larger ones just by adding 3 cent stamps. So let's see what you can make:
1 no
2 no
3 yes
4 no
5 yes
6 yes
7 no
8 yes, and this will give you 11 14 17 etc
9 yes, and this will give you 12 15 18 etc
10 yes, and this will give you 13 16 19 etc.