Ask question

Ask question

All categories

4 years ago

11

What is the first step in solving the equation b=r + 27 for r? A Add 21 to both sides. B Subtract 271 from both sides. C Multipl

y both sides by 2n. D Divide both sides by 27.

1 answer:

Ksenya-84 [330]4 years ago

7 0

Answer:

B. Subtract 2π from both sides.

Step-by-step explanation:

In order to solve for r, you are gonna want to isolate it. To do so, you first have to subtract 2π from both sides.

You might be interested in

This table shows the daily high temperature, in Fahrenheit, for two cities for ten days. City A 90 85 84 85 80 82 83 85 89 82 Ci

Anni [7]

Since the person didn't write the answer choices they were:

A. On average, city A was warmer than city B.

B. The median and mode are different for city B.

C. The temperature range between the maximum and minimum values for city A is greater than the temperature range between the maximum and minimum values for city B.

D. The median is less for city A than for city B.

I believe it is A personally cause i took the test and got it right

7 0

4 years ago

Read 2 more answers

4+(-4)=0 what property is this?

Llana [10]

Answer:

Zero property

Step-by-step explanation:

We are making a equation equal 0

7 0

3 years ago

The standard deviation of test scores on a certain achievement test is 11.3. If a randomsample of 81 students had a sample mean

Svetradugi [14.3K]

Answer: (72.535, 76.665)

Step-by-step explanation:

The confidence interval for population mean is given by :-

$\overline{x}\pm z^*\dfrac{\sigma}{\sqrt{n}}$

, where $\sigma$ = population standard deviation.

n= Sample size

$\overline{x}$ = sample mean.

$z^*$ = Critical z-value (two-tailed)

Given : $\sigma=11.3$

n= 81

$\overline{x}=74.6$

The critical values for 90% confidence interval : $z^*=\pm1.645$

Now, the confidence interval for population mean would be :

$74.6\pm (1.645)\dfrac{11.3}{\sqrt{81}}\\\\=74.6\pm(1.645)(\dfrac{11.3}{9})\approx74.6\pm2.065\\\\=(74.6-2.065,\ 74.6+2.065)\\\\=(72.535,\ 76.665)$

Hence, a 90 percent confidence interval estimatefor the average score of all students. : (72.535, 76.665)

8 0

3 years ago

Whoever gets this right gets brainliest!

Ainat [17]

The slope of function A is 6 more than function B this is because y = 9x + 4 for a function this form the slope is the x - coefficient or in this case 9 and since we already now that the functions slope is 3 subtract 3 from 9 to get the answer 6.

7 0

3 years ago

A snail can crawl 2/5 of a meter in a minute.

gavmur [86]

For 2/5 meter, it takes = 1 min.
For 1 meter, it is = 5/2 min.

Now, for 6 meters, it would be: 5/2 * 6 = 30/2 = 15

In short, Your Answer would be 15 minutes

Hope this helps!

6 0

4 years ago

Read 2 more answers