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SpyIntel [72]
3 years ago
5

The polynomial is a difference of perfect squares. Use the formula a2 – b2 = (a + b)(a – b) to factor completely.

Mathematics
1 answer:
mash [69]3 years ago
6 0

Answer:

81x^{2} -49\\(9x)^2-7^2\\(9x-7)(9x+7)

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Alan has 6 water bottles in her desk. In how many different ways can he choose 2 water bottles?
elena55 [62]

Answer:

15 ways

Step-by-step explanation:

The answer would be 6 choose 2, which is:

\frac{6!}{2!4!} = \frac{6\cdot5\cdot4!}{4!2!}=\frac{6\cdot5}{2}=15

Therefore, there are 15 ways to choose 2 of the 6 water bottles Alan has.

By the way, if this helps, could you please give me brainliest? :)

5 0
3 years ago
A square has a side length of 5. if another square is created by doubling the side length, what happens to the perimeter of the
garik1379 [7]
Its greater by a factor of 2^2 ( = 4)

Its 4 times the area of the original square.
7 0
4 years ago
6. The perimeter of the figure below is equal to 150 cm. What is the length of the longest
vampirchik [111]

Answer: 29 centimeters long

Step-by-step explanation: What you want to do in this kind of situation is to combine all like terms. After, you would get 6x + 24 = 150. What you would do here is to get 6x by itself by subtracting 24 on both sides. Now 6x = 126, to isolate the variable you divide 6 on both sides to get x = 21. However, the questions is asking for the longest side and you know that x + 8 will be the greatest out of all. So, x = 21 + 8 equals 29 centimeters. I hope this helps, please give me a brainlest! :)

7 0
2 years ago
Read 2 more answers
Simplify -19 – 1 + (–24)
IrinaK [193]
First subtract -19 - 1 = -20

Next, + (-24) is the same as just simply subtracting 24

-20 - 24

Subtract that and you get -44
3 0
3 years ago
Read 2 more answers
If you answer your a true king​
Evgesh-ka [11]

Answer:

its 29

Step-by-step explanation:

4 0
3 years ago
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