Whats 1,250 - 250 x 2?

What is the radius of a hemisphere with a volume of 165\text{ cm}^3,165 cm 3 , to the nearest tenth of a centimeter?

DanielleElmas [232]

Answer:

4.3cm

Step-by-step explanation:

the radius of the hemisphere can be determined its volume

volume of a hemisphere = (2/3) x (n) x (r^3)

n = 22/7

r = radius

(2/3) x (22/7) x( r^3) = 165 cm^3

44/21 x r^3 = 165

divide both sides of the equation by 21/44

165 x 21/44

r^3 = 78.75

find the cube root

r = 4.2863 cm

the tenth is the first number after the decimal place. To convert to the nearest tenth, look at the number after the tenth (the hundredth). If the number is greater or equal to 5, add 1 to the tenth figure. If this is not the case, add zero

the 100th terms, 8 is greater than 6, so add 1 to 2. this give 4.3cm

4 0

3 years ago

SOMEONE PLZ HELP!!!!!

LiRa [457]

1/3 scale factor

2/6=1/3

7 0

4 years ago

Five-thirds divided by one-third Step 1: Show the dividend Five-thirds in a fraction bar. Step 2: Below the dividend, show the d

Kisachek [45]

Answer: the answer 5

Step-by-step explanation: it is 5

6 0

3 years ago

Read 2 more answers

Which equation can be used to represent this problem? company spent $2000 developing a waterproof fabric. The company makes $3 o

HACTEHA [7]

The answer for this is A.

6 0

3 years ago

1. A poll conducted in 2018 found that 54% of US adult Twitter users get at least some news on Twitter. The standard error for t

Harrizon [31]

Answer:

The 99% confidence interval for the fraction of US adult Twitter users who get some news on Twitter is (0.4872, 0.6018). It means that we are 99% sure that the true proportion of US adult Twitter users who get some news on Twitter is between 0.4872 and 0.6018.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm zs$

In which

z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ , and s is the standard error.

54% of US adult Twitter users get at least some news on Twitter.

This means that $\pi = 0.54$

The standard error for this estimate was 2.4%

This means that $s = 0.024$

99% confidence level

So $\alpha = 0.01$ , z is the value of Z that has a pvalue of $1 - \frac{0.01}{2} = 0.995$ , so $Z = 2.575$

The lower bound is:

$\pi - zs = 0.54 - 2.575*0.024 = 0.4782$

The upper bound is:

$\pi + zs = 0.54 + 2.575*0.024 = 0.6018$

The 99% confidence interval for the fraction of US adult Twitter users who get some news on Twitter is (0.4872, 0.6018). It means that we are 99% sure that the true proportion of US adult Twitter users who get some news on Twitter is between 0.4872 and 0.6018.

7 0

3 years ago