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FinnZ [79.3K]
4 years ago
10

Assume that children is an integer variable containing the number of children in a community and that families is an integer var

iable containing the number of families in the same community. Write an expression whose value is the floating point average number of children per family.
Mathematics
1 answer:
kherson [118]4 years ago
3 0

Answer:

Answered

Step-by-step explanation:

Children*1 d/ family

Integer division returns an integer value in most languages.

I am assuming "1d" is double precision 1, which turns the expression into floating point division, thus allowing an answer like 1.8.

it can also be written as

float(children)/float(family)

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Find the volume V of the solid obtained by rotating the region bounded by the given curves about the specified line. x
miskamm [114]

Answer:

\frac{784}{15} \pi

Step-by-step explanation:

According to the given situation, the calculation of volume of the solid is shown below:-

Here we will consider the curves that is

x = 7y^2, x = 7

Now, rotating the line for the line x which is equals to 7

7y^2 = 7\\\\y^2 = 1\\\\ y = \pm1

So, the inner radio is

7 - 7 = 0

and the outer radius is

7y^2 - 7\\\\ = 7(y^2 - 1)

Now, the area of cross section is

A(y) = \pi(7(y^2 - 1))^2\\\\ = 49\pi(y^4 - 2y^2 + 1)

The volume is

V = \int\limits^1_{-1} A(y)dy

now we will put the values into the above formula

= \int\limits^1_{-1} 49\pi(y^4 - 2y^2 + 1)dy\\\\ = 49\pi(\frac{y^5}{5}  - \frac{2y^3}{3} + y)^{-1}\\\\ = 49\pi(\frac{1}{5} - \frac{2}{3}  + 1 + \frac{1}{5} - \frac{2}{3} + 1)\\\\ = 49\pi(2 + \frac{2}{5} - \frac{4}{3} )\\\\ = 49\pi(\frac{30+6-20}{15} )\\\\ = \frac{49\pi}{15} (16)

After solving the above equation we will get

= \frac{784}{15} \pi

6 0
4 years ago
Toni gives a cashier a $20 bill he is buying an item for $4.79 how much money should tony get back
Effectus [21]

Answer:

$15.21

Step-by-step explanation:

3 0
3 years ago
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Alex787 [66]

Answer:

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A cooler has a dimensions 50 cm by 20 cm by 30 cm <br><br>what is the shape of the cooler​
Marizza181 [45]

Answer:

rectangle

Step-by-step explanation:

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3 years ago
A deli offers a choice of 3 breads, 4 meats, and 7 toppings. Using these ingredients, how many possible sandwich combinations ar
mr Goodwill [35]
So what you can do is:

3 breads * 4 meats * 7 toppings

Because there are four meats per each of the three breads and 7 toppings for each type of bread and meat combo.

so,

3 * 4 * 7

12 * 7

84

There are 84 sandwich combos.
6 0
4 years ago
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