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3 years ago

Suppose the radius of a circle is \color{purple}{3}3start color purple, 3, end color purple. What is its diameter?

Mathematics

1 answer:

Varvara68 [4.7K]3 years ago

6 0

The number of a radius is half of the diameter. so 3 is half of 6. your diameter is 6.

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How do you solve -50x3/1000

Finger [1]

Answer:

-.15

Step-by-step explanation:

3/1000= .003

-50×.003= -.15

7 0

3 years ago

Cora paid 16/100 of a dollar to buy a postcard from Grand Canyon National park in Arizona. What is 65/100 written as a

Lana71 [14]

Answer:

$.65 (sixty five cents)

Step-by-step explanation:

6 0

3 years ago

A test consists of 100 multiple choice questions, each with five possible answers, only one of which is correct. Find the mean a

TEA [102]

Answer: Mean = 20 and standard deviation = 4

Step-by-step explanation:

Let x represents the success of getting the correct answer.

Here, the total number of trials(n) = 100

The probability of getting the correct answer, p = 1/5

Thus, the mean of the number of correct answer,

$\mu_x= np$

$\mu_x= 100\times 1/5$

$\mu_x= 20$

Now, the standard deviation, $\sigma_x= \sqrt{n\times p\times (1-p)}$

$\sigma_x= \sqrt{100\times 1/5\times 4/5}$

$\sigma_x= \sqrt{16}$

$\sigma_x= 4$

Thus, First option is correct.

6 0

3 years ago

Mr. Bennet owns 4 restaurants. The mean number of tables is 30. What could happen to the mean if he buys two new restaurants, on

wariber [46]

Answer:

Final mean value = 24.

Mean value decreased by 6 finally.

Step-by-step explanation:

Total number of restaurant initially = 4

Mean number of tables in restaurants = 30

So, total number of tables in restaurants = 4×30 = 120

Now,

He buys 2 new restaurants with 15 tables and 9 tables .

So, final number of tables = 120 + 15 + 9 = 144.

And, final number of restaurants = 4 initially + 2 newly added = 6 restaurants.

Thus , final mean value of tables in restaurants = $\frac{144}{6}$ = 24.

Thus , mean value decreased by 6 finally

8 0

3 years ago

in one day Annie traveled 5 times the sum of the number of hours Brian traveled and two together they travel 20 hours find this

Stels [109]

Use the distributive property:

5*b+5*2+b=20

5b+10+b=20.

Combine like terms:

6b+10=20.

Subtract 10 from both sides:

6b+10-10=20-10

6b=10.

Divide both sides by 6:

6b/6=10/6

b=5/3=1 2/3.

Brian travels 1 2/3 hours. This means Annie travels

5(1 2/3+2)=5(3 2/3)=5(11/3)=55/3=18 1/3 hours.

Hope this helps!

3 0

3 years ago

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