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Marizza181 [45]
3 years ago
14

Write an expression using an exponent to represent the

Mathematics
1 answer:
Ghella [55]3 years ago
3 0

Answer: 4 to the power of 4

Step-by-step explanation: Adrian started of with $4 and by month 4 he will have 256. 4•4•4•4=256

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ohaa [14]
-7x -7y = 21
Y = 6

Since they are giving you the value of 6 you just plug it in the equation

-7x - 7(6) = 21
-7x - 42 = 21
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/-7. /-7

X = -9
7 0
3 years ago
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2. Suppose over several years of offering AP Statistics, a high school finds that final exam scores are normally distributed wit
nirvana33 [79]

Answer:

By the Central Limit Theorem, the mean is 78, the standard deviation is s = \frac{6}{\sqrt{n}} and the shape is approximately normal.

Step-by-step explanation:

Central Limit Theorem

The Central Limit Theorem establishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

Mean of 78 and a standard deviation of 6

This means that \mu = 78, \sigma = 6

Samples of n:

This means that the standard deviation is:

s = \frac{\sigma}{\sqrt{n}} = \frac{6}{\sqrt{n}}

What are the mean, standard deviation, and shape of the distribution of x-bar for n?

By the Central Limit Theorem, the mean is 78, the standard deviation is s = \frac{6}{\sqrt{n}} and the shape is approximately normal.

6 0
3 years ago
Use the Pythagorean Theorem to find the missing length and then round the result to the nearest tenth.
motikmotik
A^2+B^3=c^2
6^2+8^2=c^2
36+16=c^2
52=c^2
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7.2=C
6 0
2 years ago
Question options: (1, 4.5) (2, 1.5) (1.5,2) (6,4)
sweet [91]

Answer:

(1.5,2)

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4 0
3 years ago
each month for 7 months, samuel mwos 3 lawns. How many more lawns does he need to mow before he has mowed 29 laws?
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He needs to mow 8 more lawns
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