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Alenkasestr [34]
3 years ago
6

What is a simpler form of the following expressions?

Mathematics
1 answer:
nadezda [96]3 years ago
6 0

Answer:

D. 49p² - 64

Step-by-step explanation:

(7p - 8)(7p + 8)

Solving this requires the 'difference of squares' concept which states;

If (a - b)(a + b)

Then the solution must be a² - b²

Considering (7p - 8)(7p + 8) then the answer is;

(7p)² - 8² = 49p² - 64

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A ski resort claims that there is a 75% chance of snow on any given day in january and that snowfall happens independently from
creativ13 [48]

The mean exists at 3 and the standard deviation exists 0.87.

Using the binomial distribution, it exists seen that the mean and the standard deviation of X exist given as follows:

$\mu_{X}=3, \sigma_{X}=0.87

<h3>What is the binomial probability distribution?</h3>

The expected value of the binomial distribution exists:

$\mu_{X}=n p$$

The standard deviation of the binomial distribution exists:

$\sigma_{X}=\sqrt{n p(1-p)}$$

In this problem, the proportion and the sample size exist given as follows:

p = 0.75

n = 4

Therefore, the mean and the standard deviation exist given by:

$&\mu_{X}=n p=4(0.75)=3 \\

$&\sigma_{X}=\sqrt{n p(1-p)}

$=\sqrt{4(0.75)(0.25)}=0.87

The mean exists at 3 and the standard deviation exists 0.87.

To learn about the binomial distribution refer to:

brainly.com/question/24863377

#SPJ4

7 0
2 years ago
Read 2 more answers
5t-14=-14<br> solve the equation for t
ikadub [295]

Hi there!


Before we begin, let's rewrite your equation. :)


5t - 14 = -14


Step 1) Add 14 to both sides.


5t - 14 + 14 = -14 + 14 5t = 0


Step 2) Divide both sides by 5.


\frac{5t}{5} =  \frac{0}{5}


t = 0


Final Answer -


t = 0


Hope this helps!

Message me if you need anymore help! :D


3 0
3 years ago
One angle is its own supplement.<br> What size is this angle?
givi [52]

Answer:When an angle is its own supplement, that means that the angle, plus itself, will equal 180 degrees.

Step-by-step explanation:

6 0
3 years ago
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Which number is not a perfect square?<br> A. 4<br> B. 9<br> C. 111<br> D. 81
Paladinen [302]

Answer:

C 111

Step-by-step explanation:

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3 years ago
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Harry earned ₹40,000 for 80 days of work. He was paid an equal amount each day. How much did he earn per day?
Katyanochek1 [597]

Answer: ₹500

Step-by-step explanation:

Harry earned ₹500 every day.

₹40,000 ÷ 80 = ₹500

₹40,000 divided by 80 will turn 80 days to 1 day which answers your question.

4 0
2 years ago
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