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klio [65]
2 years ago
11

Find the product. (2x+3)(2x-3) A. 4x2 - 9 B. 4x2 +9 C. 4x2 –5x+9 D. 4x2 - 5x-9

Mathematics
1 answer:
Mademuasel [1]2 years ago
6 0

Answer:

A. 4x^2 - 9

Step-by-step explanation:

2x * 2x = <u>4x^2</u>

2x * -3 = <u>-6x</u>

3 * 2x = 6x

-3 * 3 = -9

-6x + 6x  = 0, so we're left with 4x^2 - 9

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Can someone help with this question
NikAS [45]
1st : Find the volume of the rectangular block:
12 × 10 × 20 = 2400 cm^3.

2nd : Find the volume of a cylinder
\pi  {r}^{2} h
Where r is radius & h is height.
so:
\pi \times 2.2 {}^{2}  \times 5.0
= 76.02654222 cm^3

Lastly, divide the volume of the rectangular block by the volume of the cylinder
2400 ÷ 76.026 = 31.5679226

You can't round it up so the answer is F) 31
4 0
2 years ago
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miskamm [114]

Answer:

If it's a rectangle, then point D is (3,-1)

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Step-by-step explanation:

7 0
2 years ago
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vladimir1956 [14]

Answer:

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Step-by-step explanation:

7 0
3 years ago
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If you can get an answer to any question, what would you ask? You toss a fair coin 4 times. What is the probability that (round
Andrew [12]

Answers:

a) 0.0625

b) 0.9375

==================================================

Work Shown:

The probability of landing on heads is 1/2 = 0.5 since both sides are equally likely to land on. Getting 4 heads in a row is (1/2)^4 = (0.5)^4 = 0.0625

The event of getting at least one tail is the complement of getting all four heads. This is because you either get all four heads or you get at least one tail. One or the other must happen. We subtract the result we got from 1 to get 1-0.0625 = 0.9375

You can think of it like this

P(getting all four heads) + P(getting at least one tail) = 1

The phrasing "at least one tail" means "one tail or more".

4 0
3 years ago
the initial population of a town is 3200 grows with a doubling time of 10 yrs what will the population be in 12yrs​
Degger [83]

Answer:

I think 6464

Step-by-step explanation:

I wish you luck on this assignment:P:D

6 0
3 years ago
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