Not sure of this one. can an.expert help

Mathematics

1 answer:

kifflom [539]3 years ago

6 0

How to get answer by JKismyhusbandbae: To get the answer you would multiply

Pi(3.14) times Radius which is R otherwise 80 square times H which is height 1.3.

It will need around 26138.050... and more it is not a repeating decimal I just simplified it.

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What Ratio Matches the chart

malfutka [58]

The answer is C. 5:1 . 15/3 = 5/1 and 25/5 = 5/1

8 0

2 years ago

Read 2 more answers

10 coupons are given to 20 shoppers in a store. Each shopper can receive at most one coupon. 5 of the shoppers are women and 15

zmey [24]

Answer:

$\, {20 \choose 10} - {15 \choose 10}$

Step-by-step explanation:

We can find the total amount of ways at least a woman receives a coupon by calculating the total amount of possibilities ot distribute the coupon and substract it to the total amount of possibilities to distribute 10 coupons to the 15 men (this is the complementary case that at least a woman receives a cupon).

- The total amount of possibilities to distribute the coupons among the 20 shoppers is equivalent to the total amount of ways to pick a subset of 10 elements from a set of 20. This is the combinatiorial number of 20 with 10, in other words, $\, {20 \choose 10} = \frac{20!}{10!10!} .$

- To calculate the total amount of possibilities to distribute the coupons among the 15 men, we need to make the same computation we made above but with a set of 15 elements instead of 20. This gives us $\, {15 \choose 10} = \frac{15!}{10!5!}$ possibilities.

Therefore, we have $\, {20 \choose 10} - {15 \choose 10}$ possibilities to distribute the coupons so that at least one woman receives a coupon.

I hope that works for you!

3 0

2 years ago

What is the value of c? 13c−22=−17c+14

elena-s [515]

13c-22=-17c+14
-14 -14
13c-36=17c
-13 -13
-36\4=4\42
C=-9

3 0

3 years ago

Five students visiting the student health center for a free dental examination during National Dental Hygiene Month were asked h

Andrews [41]

Answer:

[0.9 months, 32.69 months]

Step-by-step explanation:

The mean is

$\bf \bar x=\frac{5+17+12+21+29}{5}=16.8$

The standard deviation is

$\bf s=\sqrt{\frac{(5-16.8)^2+(17-16.8)^2+(12-16.8)^2+(21-16.8)^2+(29-16.8)^2}{5}}=8.1092$

Now, we have to find two values a and b such that the area under the Normal curve with mean 16.8 and standard deviation 8.1092 between a and b equals 95% = 0.95

Using a spreadsheet we find these values are

a = 0.906

b = 32.694

<h3>(See picture) </h3>

and our 95% confidence interval for the mean number of months elapsed since the last visit to a dentist for the population of students participating in the program rounded to two decimal places is

[0.9 months, 32.69 months]