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aalyn [17]
3 years ago
7

Simplify the expression 18 + 12x

Mathematics
1 answer:
kipiarov [429]3 years ago
5 0

Answer:

30x

Step-by-step explanation:

See the steps below:)

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You want to obtain a sample to estimate a population proportion. At this point in time, you have no reasonable estimate for the
Vedmedyk [2.9K]

Answer:

416025

Step-by-step explanation:

For confidence interval of 99%, the range is (0.005, 0.995). Using a z-table, the z-score for 0.995 is 2.58.

Margin of error = 0.2% = 0.002.

Proportion is unknown. So, worse case proportion is 50%. p = 50% = 0.5.

\\ n = \left(\frac{\texttt{z-score}}{\texttt{margin of error}} \right )^2\cdot p\cdot (1-p) \\ = \left(\frac{2.58}{0.002} \right )^2\cdot 0.5\cdot (1-0.5)=416025

So, sample size required is 416025.

4 0
3 years ago
What are the answers to these questions ?
chubhunter [2.5K]
90000000000000000000000000000000000000000

8 0
3 years ago
Simplify... <br><br> thank you
loris [4]
First simplify the radical then simplify the fraction then get the root iut of the denominator, you should get the second one
6 0
3 years ago
7 × (–3) × (–2)2 = ?
andre [41]

Answer:

84

Step-by-step explanation:

<u>Order of operations (Parentheses first, exponents next, then multiplication, etc.)</u>

-3 * -2 = 6

<u>Multiply</u>

7 * 6 = 42

42 * 2 = 84

4 0
3 years ago
Read 2 more answers
Rewrite the expression in z to the n power. The expression I was given is: 1 over z to the negative 1 half power.
12345 [234]

Answer:

The equivalent expression is;

\frac{1}{z^{-\frac{1}{2}}}=z^{\frac{1}{2}}

Step-by-step explanation:

The given expression is:


\frac{1}{z^{-\frac{1}{2} }}

Recall that:

\frac{1}{a^{-m}}=a^m


In our case, a=z and  m=\frac{1}{2}.


We use this property of exponent to obtain;

\frac{1}{z^{-\frac{1}{2}}}=z^{\frac{1}{2}}


6 0
3 years ago
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