2 years ago

Write a^6 using a positive exponent

Mathematics

1 answer:

VikaD [51]2 years ago

5 0

This is already written with positive exponent

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A study has indicated that the sample size necessary to estimate the average electricity use by residential customers of a large

Zanzabum

Answer:

$\sigma=547.1125$

Step-by-step explanation:

-The margin of error is calculated using the formula:

$ME=z_{\alpha/2}\times \frac{\sigma}{\sqrt{n}}\\\\$

-We substitute the values, n=900 and ME=30 in the formula to solve for standard deviation:

$ME=z_{\alpha/2}\times \frac{\sigma}{\sqrt{n}}\\\\\\30=1.645\times\frac{\sigma}{\sqrt{900}}\\\\\sigma=\frac{30^2}{1.645}\\\\=547.1125$

Hence, the population standard deviation is 547.1125

7 0

3 years ago

help?! so the question is: a business has $15,000 to spend on airline tickets to travel to a conference. it wants 27 of its empl

egoroff_w [7]

700x + 375(27 - x) = 15000
Solve for x
X=15 business class

Economy class 27-15=12

8 0

3 years ago

Read 2 more answers

What the answer now hurry up

maxonik [38]

Answer:

Below

Step-by-step explanation:

The equation of a circle is written as:

(x-a)^2 + (y-b)^2 = r^2

● ( a,b) are the coordinates of the center . Here (0,-2)

● r is the radius (here 12)

So the equation is:

x^2 + (y+2)^2 = 12^2

6 0

2 years ago

Solve similar triangles (advanced)

Reil [10]

Answer:

x = 5

Step-by-step explanation:

Thales' theorem

$\frac{9}{3} =\frac{15}{x}$

$x=\frac{(15)(3)}{9} =\frac{45}{9} =5$

hope this helps

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2 years ago

In triangle XYZ, m∠Z > m∠X + m∠Y. Which must be true about △XYZ?

Ne4ueva [31]

Answer:

I don't understand

Step-by-step explanation:

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2 years ago