At a small private college 9 / 20 of the students are female if there are 2160 female students how many male students

A circular swimming pool has diameter 60 feet and is centered in a fenced-in square region measuring 80 feet by 80 feet. a concr

borishaifa [10]

If I read the question correctly, the information about the 80x80 fencing and the grass region are all irrelevant information.

In order to find the area of the side walk we are going to use the formula A=pi(r^2) where r = the radius. The diameter of the pool is 60 feet and the the sidewalk is 5 feet bigger all around meaning we had 5 feet to both sides of this 60 feet giving you an overall diameter of 70 feet (or 60 + 5*2). To find the radius take half of the diameter. 70/2 = 35.

Now we plug in 35 to the equation. A = Pi(35^2) = 1225pi. Leave your answer like this as we are not finished and will need to round at the end for an accurate answer. This is NOT the end, that number is the area of the sidewalk AND the pool.

The sidewalk is not a full circle, just a border so we now have to find the area of the actual pool and subtract it from this 1225pi for the sidewalk's area. Same formula, Area = pi(r^2). The diameter of the pool is 60 meaning the radius is 30 (or 60/2). Plug into the equation, pi(30^2) = 900pi.

Now do 1225pi - 900pi to get 325pi. Break out your calculator and hit the approximation button. 325pi is approximately 1021.018 if rounded to 3 decimal places.

The area of the 5-foot wide sidewalk encircling the pool is approximately 1021.018 square feet.

5 0

3 years ago

What is the value of x?<br> 6.75+ x = 131

yanalaym [24]

Answer:

x = 497/4 = 124.250

Step-by-step explanation:

Step 1 :

27

Simplify ——

4

Equation at the end of step 1 :

27

(—— + x) - 131 = 0

4

Step 2 :

Rewriting the whole as an Equivalent Fraction :

2.1 Adding a whole to a fraction

Rewrite the whole as a fraction using 4 as the denominator :

x x • 4

x = — = —————

1 4

Equivalent fraction : The fraction thus generated looks different but has the same value as the whole

Common denominator : The equivalent fraction and the other fraction involved in the calculation share the same denominator

Adding fractions that have a common denominator :

2.2 Adding up the two equivalent fractions

Add the two equivalent fractions which now have a common denominator

Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:

27 + x • 4 4x + 27

—————————— = ———————

4 4

Equation at the end of step 2 :

(4x + 27)

————————— - 131 = 0

4

Step 3 :

Rewriting the whole as an Equivalent Fraction :

3.1 Subtracting a whole from a fraction

Rewrite the whole as a fraction using 4 as the denominator :

131 131 • 4

131 = ——— = ———————

1 4

Adding fractions that have a common denominator :

3.2 Adding up the two equivalent fractions

(4x+27) - (131 • 4) 4x - 497

——————————————————— = ————————

4 4

Equation at the end of step 3 :

4x - 497

———————— = 0

4

Step 4 :

When a fraction equals zero :

4.1 When a fraction equals zero ...

Where a fraction equals zero, its numerator, the part which is above the fraction line, must equal zero.

Now,to get rid of the denominator, multiplys both sides of the equation by the denominator

Here's how:

4x-497

—————— • 4 = 0 • 4

4

Now, on the left hand side, the 4 cancels out the denominator, while, on the right hand side, zero times anything is still zero.

The equation now takes the shape :

4x-497 = 0

Solving a Single Variable Equation :

4.2 Solve : 4x-497 = 0

Add 497 to both sides of the equation :

4x = 497

Divide both sides of the equation by 4:

x = 497/4 = 124.250

One solution was found :

x = 497/4 = 124.250

Processing ends successfully

plz mark me as brainliest :)

6 0

3 years ago

The sales department wants to place an order for 253,625 third grade math books for a region. Once the order is given, there is

Vladimir [108]

If the sales department wants to place an order for 253,625 third grade math books for a region. How can the sale manager estimate the number of math books to be sure that there are more then enough is: The manager should carryout survey based on the number of people per class and provide 25,362 books.

<h3></h3><h3>How the sale can manager estimate the number of math books </h3>

Since extra math's books will be needed after giving out the available math's books.

Hence:

Additional maths books=10%× 253,625

Additional maths books=25,362 books

Based on the above calculation the manager should carryout survey based on the number of people per class and provide them with 25,362 books.

Therefore how can the sale manager estimate the number of math books to be sure that there are more then enough is that the manager should carryout survey based on the number of people per class and provide 25,362 books.

Learn more about How the sale can manager estimate the number of math books here:brainly.com/question/18558957

#SPJ1

6 0

2 years ago

Twice the difference of a number and 9 is at least 17.

victus00 [196]

Answer:

x ≥ 12.5

Step-by-step explanation:

2(x-9) ≥ 17---Use Distributive Property

2x-18 ≥ 17

2x-18+18 ≥ 17+18

2x ≥ 25

2x/2 ≥ 25/2

x ≥ 12.5

I hope this helps!

8 0

2 years ago

Do Babies Understand Probability? Can babies reason probabilistically? A study1 investigates this by showing ten- to twelve-mont

Anna [14]

Answer:

Step-by-step explanation:

Wow, that’s interesting!

Is this a question?

4 0

3 years ago