All categories

3 years ago

Which expression is equivalent to r^m ÷ r^n r^m − n r^m + n r^m ⋅ n r^m ÷ n

Mathematics

2 answers:

REY [17]3 years ago

4 0

Hey there!

The answer should be r^m + n

Neporo4naja [7]3 years ago

4 0

<span>r^m ÷ r^n
= r^(m - n)

Answer
</span>r^(m - n)

You might be interested in

U xy, for u = 2, x = 9, and y = 6

Yuki888 [10]

First thing you gotta do is to sub in the numbers into the equation/expression
<span>uxy = (2)(9)(6)
</span> = 108

* brackets means multiplying

Final answer is 108

8 0

3 years ago

There are 5 girls and 5 boys in a chess club. The club holds a round-robin tournament in which every player plays against every

umka21 [38]

The answer would be 18.9%

5 0

3 years ago

PLEASE HELP ME

lyudmila [28]

As seen, the graph is pointing/increasing upwards. This means that the graph is exponentially increasing.

You notice there are significantly more spores at 4th hour than the first, therefore, this is an increasing trend.

Hope I helped :)

6 0

3 years ago

Read 2 more answers

There are 81 athletes who joined a parade. Four-ninths of them are basketball players. How many basketball players joined the pa

lozanna [386]

Answer:

Step-by-step explanation:

81 x (4/9) =

5 0

2 years ago

Of 585 samples of seafood purchased from various kinds of food stores in different regions of a country and genetically compared

Dafna1 [17]

Answer:

a) The 99% confidence interval is from 14.8% to 23.2%.

b) The confidence interval tells us that the true proportion of mislabeled is within 14.8% and 23.2%, with a 99% confidence. In other words, if we take samples of the same size, 99% of the samples will have a proportion within 0.148 and 0.232.

c) The confidence interval calculation take into account the sample size, so the width (or precision) of the interval depends on the sample size.

The only criticism that could be analyzed is to see if the sample is representative of the population.

Step-by-step explanation:

a) We have to calculate a 99% confidence interval for the proportion.

The sample proportion is p=0.19.

The standard error of the proportion is:

$\sigma_p=\sqrt{\dfrac{p(1-p)}{n}}=\sqrt{\dfrac{0.19*0.81}{585}}\\\\\\ \sigma_p=\sqrt{0.000263}=0.016$

The critical z-value for a 99% confidence interval is z=2.576.

The margin of error (MOE) can be calculated as:

$MOE=z\cdot \sigma_p=2.576 \cdot 0.02=0.042$

Then, the lower and upper bounds of the confidence interval are:

$LL=p-z \cdot \sigma_p = 0.19-0.042=0.148\\\\UL=p+z \cdot \sigma_p = 0.19+0.042=0.232$

The 99% confidence interval for the population proportion is (0.148, 0.232).

5 0

3 years ago