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Naya [18.7K]
3 years ago
14

Please help i need this done asap

Mathematics
1 answer:
ki77a [65]3 years ago
8 0

Answer:

A

Step-by-step explanation:

Using the rules of exponents

a^{m} × a^{n} = a^{(m+n)}  , a^{-m} = \frac{1}{a^{m} }  , a^{0} = 1

(14x³y^{-4} )(4x^{-5}y^{4} )

= 14 × 4 × x³ × x^{-5} × y^{-4} × y^{4}

= 56 × x^{(3-5)} × y^{(-4+4)}

= 56 × x^{-2} × y^{0}

= 56 × \frac{1}{x^2} × 1

= \frac{56}{x^2} → A

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A set of data has a normal distribution with a mean of 29 and a standard deviation of 4. Find the percent of data within each in
Nikolay [14]
Let x be the population distribution.
p(25 ≤ x ≤ 33) = p((25 - 29)/4 ≤ z ≤ (33 - 29)/4) = p(-1 ≤ z ≤ 1) = p(z ≤ 1) - p(z ≤ -1) = p(z ≤ 1) - [1 - p(z ≤ 1)] = 2p(z ≤ 1) - 1 = 2(0.84134) - 1 = 0.68268 = 68%

p(21 ≤ x ≤ 25) = p((21 - 29)/4 ≤ z ≤ (25 - 29)/4) = p(-2 ≤ z ≤ -1) = p(z ≤ -1) - p(z ≤ -2) = [1 - p(z ≤ 1)] - [1 - p(z ≤ 2)] = p(z ≤ 2) - p(z ≤ 1) = 0.97725 - 0.84134 = 0.13591 = 13.5%


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4 years ago
Which of the following is the solution to the equation ​
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serg [7]
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Read 2 more answers
How much is the difference in yearly median income for a female versus male at a masters degree level?
ale4655 [162]

Answer: the difference in yearly median income for a female vs male at a masters degree level is

$15,642.90/year

Step-by-step explanation:

there are roughly 52.143 week in a year.

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the median weekly income for a male with a masters degree is :

$1,201

so if you multiply $901 x 52.143 you get :

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and if you multiply $1,201 x 52.143 you get :

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7 0
4 years ago
Solve the system of linear equations below: <br> 2x + 5y = 34<br> x + 2y = 14
7nadin3 [17]
X + 2y = 14
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x = -2y + 14

substitute x into the first equation

2 (-2y + 14) + 5y = 34
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simplify your y variable

y + 28 = 34

subtract 28 to find out what y equals

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now substitute y into the equation to find out what x equals

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subtract 12 to get x

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ANSWER: (2, 6)
6 0
3 years ago
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