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Gnom [1K]
2 years ago
10

(07.04) When 27 times x squared times z all over negative 3 times x squared times z to the sixth power is completely simplified,

the exponent on the variable z is _____. Numerical Answers Expected! Answer for Blank 1:

Mathematics
2 answers:
anzhelika [568]2 years ago
6 0

Answer:

The exponent on variable z is -5

Step-by-step explanation:

\frac{27x^2z}{-3x^2z^6}

To simplify it we apply property of exponents

a^m / a^n = a^m-n

LEts divide the number first

27/ -3= -9

we have x^2 at the top and bottom . so we cancel it out

\frac{z}{z^6} =\frac{z^1}{z^6} =z^{-5}

Now combine all the terms

-9z^-5

The exponent on variable z is -5

Alik [6]2 years ago
4 0
The answer is negative 5

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A school teacher is worried that the concentration of dangerous, cancer-causing radon gas in her classroom is greater than the s
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Answer:

H0 ; μ ≤ 4 pCi/L

Ha ; μ > 4 pCi/L

The null hypothesis is that the concentration of dangerous, cancer-causing radon gas in her classroom is less than or equal to the safe level of 4pCi/L

H0 ; μ ≤ 4 pCi/L

The alternative hypothesis is that the concentration of dangerous, cancer-causing radon gas in her classroom is greater than the safe level of 4pCi/L.

Ha ; μ > 4 pCi/L

Step-by-step explanation:

The null hypothesis (H0) tries to show that no significant variation exists between variables or that a single variable is no different than its mean. While an alternative Hypothesis (Ha) attempt to prove that a new theory is true rather than the old one. That a variable is significantly different from the mean.

The null hypothesis is that the concentration of dangerous, cancer-causing radon gas in her classroom is less than or equal to the safe level of 4pCi/L

H0 ; μ ≤ 4 pCi/L

The alternative hypothesis is that the concentration of dangerous, cancer-causing radon gas in her classroom is greater than the safe level of 4pCi/L.

Ha ; μ > 4 pCi/L

7 0
2 years ago
Which rule should be applied to reflect f(x)=x^3 over the y-axis?
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To make a reflection over the y axis, make the whole equation negative. 
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f(x) = -x^3
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Problem Lois and Clark own a company that sells wagons. The amount they pay each of their sales employees (in dollars) is given
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12h + 30w.....where h = hrs worked and w = wagons sold

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8 0
2 years ago
Tyler reads 2/15 of a book on Monday, 1/3 of it on tuesday, 2/9 of it on Wednesday, and 3/4 of the remainder on thus day. If he
kykrilka [37]

The number of pages in the book is 180

<u>Explanation:</u>

The first thing we should do is to convert these fractions to percentage

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3/4 of the remainder on thursday:

Thursday: (100 - (13.33 + 33.33 + 22.22) * (3/4) = 23.33%

he still has 14 pages left to read on friday

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Which means that 14 pages represent 7.77% of the book.

Therefore the number of pages of the book is given by:

=\frac{100}{7.77} X 14\\\\= 180

Therefore, number of pages in the book is 180

4 0
1 year ago
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