Andy is buying carpet squares for his living room. the length of the room is 20 feet, and the width is 16 feet. each carpet square covers 4 square feet. how many carpet squares will andy need to purchase to cover the room

Answers

Answer 1

Answer:

andy needs 80 carpet squares

Step-by-step explanation:

Answer 2

Final answer:

To cover the living room, multiply the room's length by its width to get the area in square feet (320 square feet), then divide by the area that one carpet square can cover (4 square feet), resulting in 80 carpet squares needed.

Explanation:

To calculate the number of carpet squares needed to cover Andy's living room, we start by finding the area of the room. The area is the product of the length and the width, so we multiply the room's dimensions: 20 feet (length) by 16 feet (width). This calculation gives us an area of 320 square feet. Next, we divide the total area by the area that each carpet square can cover. Since each square covers 4 square feet, we divide 320 square feet by 4 square feet per square to determine the number of squares needed:

320 square feet ÷ 4 square feet/square = 80 squares.

Therefore, Andy will need to purchase 80 carpet squares to cover the living room.


Related Questions

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If A(1, 1), B(5, 4), C(10, 3), and D(6, 0) are the vertices of a quadrilateral, do the points form a parallelogram? Justify your answer.

Yes, it is a parallelogram because the slope of segment AB equals the slope of segment DC, which equals negative start fraction three over four end fraction comma and AD = BC = 5 units.
Yes, it is a parallelogram because the slope of segment AB equals the slope of segment DC, which equals start fraction three over four end fraction comma and AB = CD = 5 units.
Yes, it is a parallelogram because the midpoint of the diagonals segment AC and segment BD is (5.5, 2).
No, it is not a parallelogram because the slope of segment AB = 1 and the slope of segment DC equals negative start fraction three over four end fraction full stop

Answers

I believe the answer is yes, it is a parallelogram because the slope of segment AB equals to the slope of segment DC, which equals start fraction three over four end fraction comma and AB=CD=5 units.
The slope of AB = (4-1)/(5-1)= 3/4
The slope of DC = (0-3)/(6-10) = 3/4
Thus, the two segments have equal slope,
Both segments are also equal in magnitude 5 units 

. Ms. Johnson, a circus ringleader, made a cake in the shape of a circus tent to use as the centerpiece at a celebration. As shown in the illustration, the cake consists of a cylinder and a cone. The height of the cone is one-half the height of the cylinder. The volume of the cylinder is 3 1470 in . The diameter of the cylinder is 12 in. What is the volume of the circus tent cake? Use 3.14 for  . Round to the nearest hundredth.





Ms. Johnson wants all the circus employees to have miniature cakes in the shape of either a circus ball or a
clown hat. She wants the clown hat dessert and the circus ball dessert to have equal volumes. The radius of
both cake pieces will be 3 in. What must the height of the clown hat cake be for the two cakes to be equal in
volume? Round to the nearest hundredth if necessary. Explain or show your work.


Answers

The formula for the volume of a cylinder is V=πr²h.  Substituting the information we have, we get 1470=(3.14)(6²)h
1470=113.04h
Divide both sides by 113.04:
1470/113.04 = 113.04h/113.04
13 ≈ h
The height of the cylinder is 13 inches.  We know that the height of the cone is 1/2 the height of the cylinder; 1/2(13) = 6.5 inches.  The formula for the volume of a cone is:
V=1/3πr²h
The cone and the cylinder have the same radius, and we now know that the height of the cone is 6.5.  Substituting this information in we have:
V=1/3(3.14)(6²)(6.5) = 244.92 in³
The total volume of the cake would be the volume of the cylinder added to the volume of the cone:
1470+244.92 = 1714.92 in³.

The formula for the volume of a sphere, for the ball cake, is 
V=4/3πr³.  Using the radius of 3 we have:
V=4/3(3.14)(3³)=113.04 for the volume of the circus ball cake.
The formula for the area of the cone-shaped hat cake is V=1/3πr²h.  We want it to have the same volume as the circus ball cake, and we know the radius is still 3:
113.04=1/3(3.14)(3²)h
This simplifies to
113.04=9.42h
Divide both sides by 9.42:
113.04/9.42 = 9.42h/9.42
The hat cake would have to have a height of 12 inches to have the same volume.

Answer:

bce

Step-by-step explanation:

What are the solutions of the equation?

15+IXI=26

Choose all answers that are correct.



–41

–11

11

41

Answers

the correct answer would be 41

Naoya read a book cover to cover in a single session, at a rate of 555555 pages per hour. After 444 hours, he had 350350350 pages left to read.

Answers

There's no question in this statement.

The question involves a mathematical reading rate scenario where Naoya calculates how much of a book he has left to read. Since the numbers provided are unrealistic, an example with plausible figures is used to illustrate the process of determining total reading time and daily reading goals.

The question deals with a reading rate calculation problem involving Naoya, who has read part of a book and wants to figure out how much more he needs to read. We can figure out the total number of pages in the book by considering the pages he has read at the rate of 555,555 pages per hour over 444 hours, and adding the remaining 350,350,350 pages he has left to read. However, it appears there are typographical errors in the question with the repetition of numbers, which should likely be simplified to realistic figures before we can calculate the total number of pages in the book.To apply the concept efficiently, let's take an example with realistic numbers similar to the approach mentioned for Marta. Suppose Marta reads at a rate of 48 pages per hour and she needs to finish a 497-page novel. We divide the total page count (497) by her hourly rate (48 pages/hour) to find the total hours needed, which is approximately 10.35 hours or roughly 10 to 11 hours.

If Marta wishes to finish the novel over two weeks, she would divide her total reading time by the number of days she plans to read, ensuring she allocates enough time each day to reach her goal. Similar reading strategies can be applied whether balancing act, early bird, or taking the approach of reading a certain number of pages each day to make a larger task more doable.

The owner of an office building is expanding the length and width of a parking lot by the same amount. The lot currently measures 120 ft by 80 ft, and the expansion will increase its area by 4,400 ft2. By how many feet should the length of the parking lot be increased? A = lw 1.2 f

Answers

Answer: The length of the parking lot should be increased 20 ft.

Please, see the attached files.

Thanks.

Answer:

b on edge

Step-by-step explanation:

You must use the substitution method. 3x+2y=11
y=5x-1

Answers

plug in y=5x-1 for y in 3x+2y=11

3x+2(5x-1)=11
3x+10x-2=11
13x=13
x=1

plug x=1 to y=5x-1 to find y

y=5(1)-1
y=5-1
y=4

ANSWER: x=1 and y=4 which is (1,4) as an ordered pair

Mrs. Conley asks her class what kind of party they want to have to celebrate their excellent behavior. Out of all the students in the class, 5 want an ice cream party, 7 want a movie party, 10 want a costume party, and the rest are undecided. If 20% , percent want an ice cream party, how many students are in the class?

Answers

20% x 5 = 100%
5 x 5 = 25
There are 25 students in the class, 3 are undecided.

4. The distance covered by the cook in Triangle A equals _______________ eighteen-inch steps.
6,480
540
360
347


5. The distance covered by the cook in Triangle B equals _______________ eighteen-inch steps.
480
500
5,760
320


6. The distance covered by the cook in Triangle C equals__________eighteen-inch steps.
347
520
6,240
9,360

Answers

we know that

to convert feet to inches we must multiply by 12

4. The distance covered by the cook in Triangle A equals 
a) fridge and stove-----------> 5*16*12=960 in
b) fridge and sink-------------> 10*22*12=2640 in
c) sink and stove--------------> 15*16*12=2880 in
then add, 960 + 2640 + 2880 = 6480 in

the answer asks for the distance in 18 in lengths 
so divide 6480 by 18 -------------> 6480/18=360 

the answer part N 4) is 360 eighteen-inch steps

5. The distance covered by the cook in Triangle B equals 
a) fridge and stove-----------> 5*16*12=960 in
b) fridge and sink-------------> 10*16*12=1920 in
c) sink and stove--------------> 15*16*12=2880 in
then add, 960 + 1920 + 2880 = 5760 in

the answer asks for the distance in 18 in lengths
so divide 5760 by 18 -------------> 5760/18=320 

the answer part N 5) is 320 eighteen-inch steps

6. The distance covered by the cook in Triangle A equals 
a) fridge and stove-----------> 5*15*12=900 in
b) fridge and sink-------------> 10*22*12=2640 in
c) sink and stove--------------> 15*15*12=2700 in
then add, 900 + 2640 + 2700 = 6240 in

the answer asks for the distance in 18 in lengths 
so divide 6240 by 18 -------------> 6240/18=346.67------> 347

the answer part N 6) is 347 eighteen-inch steps

help needed
An unlabeled hierarchical diagram of various astronomical bodies is shown. The labels A, B, C and D can be used to represent the galaxy, Mars, universe, moon, and solar system.

Part 1: Which four astronomical bodies would you choose to represent the four labels in the diagram?
Part 2: Explain why the hierarchical level D is different from the rest.

Answers

A: Universe (It surrounds everything) B: Galaxy (Smaller than the universe but larger than the rest) C: Solar System D: Mars
Cant help you for number 2 though. Hope this helps :)
The awnser to your qwestion would be  A

 

Select the point that satisfies y ≤ x2 - 3x + 2. A. (3, 3) B. (4, 4) C. (2, 2) D. (1, 1)

Answers

To answer this question, you will substitute in the first number in the ordered pair for x and the second number in the ordered pair for y.  For the first ordered pair, it is 3<3^2- 3 x 3 + 2.  Simplified, it would say that 3<2 which is not true!  For b. it would be 3<4^2- 3 x 4 + 2.   Simplified, it would say that 4<6 which is true!   For c. it would be 2<2^2- 3 x 2 + 2.   Simplified, it would say that 2<0 which is NOT true! For d. it would be 1<1^2- 3 x 1 + 2.   Simplified, it would say that 1<0 which is also NOT true!

Answer:

the answer is (4,4)

Step-by-step explanation:


Find the exact values of the remaining trigonometric functions of θ satisfying the given conditions. (if an answer is undefined, enter undefined.) csc θ = 14, cot θ < 0

Answers

The answer is undefined.
Final answer:

Given that csc θ = 14 and cot θ < 0, we find that sin θ = 1/14 and cos θ must be negative. We use the identity sin² θ + cos² θ = 1 to solve for the exact value of cos θ, selecting the negative solution. The remaining trigonometric functions are then found using these values.

Explanation:

Given that the cosecant of theta (csc θ) is 14 and cotangent of theta (cot θ) is less than zero, we can find the other trigonometric values. We begin by recalling that cosecant is the reciprocal of the sine function, so sin θ = 1/14. Subsequently, we are told cot θ < 0, which means either the cosine or the sine (or both) must be negative.

Since cot θ is negative and we know sin θ is positive (since csc θ is positive), then we can conclude that cos θ must be negative. However, the exact value of cos θ is not readily identifiable from these properties alone.

To find the trigonometric value of cos θ, we can utilize the identity sin² θ + cos² θ = 1. Substituting our known sin θ value, we solve for cos θ. This gives us two possible solutions for cos θ, either positive or negative. As previously deduced, we select the negative solution for cos θ. The remaining trigonometric functions can then be found given these values:

tan θ = sin θ / cos θ,sec θ = 1 / cos θ, andcot θ = 1 / tan θ, or alternatively, cos θ / sin θ.

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robert leaves his home to go to his office . he drives 6km due north and then 4 km due east. approximatel what is the shortest distance from roberts home to his office , in kms?

Answers

The shortest distance from Roberts home to his office can be found by using the Pythagorean theorem. The triangle that is created is a right triangle. We need to solve for the hypotenuse, the side directly across from the right angle created from this scenario. This Theorem says a^2+b^2=c^2, so 4x4+6x6=c^2. 52=c^2. The square root of 52 is approximately 7.2 km.

To find the shortest distance from Robert's home to his office, we use the Pythagorean theorem with the distances traveled north and east to calculate the length of the hypotenuse, which is approximately 7.2 kilometers.

Robert leaves his home and drives 6 km due north and then 4 km due east. To determine the shortest distance from Robert's home to his office, we can use the Pythagorean theorem. This scenario forms a right-angled triangle where the two sides are the north-bound and east-bound legs of his journey, and the hypotenuse is the shortest distance.

Step 1: Label the lengths of the two sides adjacent to the right angle as 'a' and 'b', where 'a' is the 6 km north-bound leg and 'b' is the 4 km east-bound leg.

Step 2: Apply the Pythagorean theorem, which states that the square of the hypotenuse (c) is equal to the sum of the squares of the other two sides:

c² = a² + b²

Step 3: Substitute the known values into the theorem:

c² = 6² + 4²

Step 4: Calculate the squares of the sides and sum them:

c² = 36 + 16

Step 5: Sum the squares gives us:

c² = 52

Step 6: Take the square root of both sides to find 'c':

c = √52

Step 7: Calculate the square root which approximately equals:

c = 7.2 km

Therefore, the shortest distance from Robert's home to his office is approximately 7.2 kilometers.

Find the lateral area for the cylinder with the given measurement. r = 4, h = 5

Answers

Answer: 125.6 unit^2

Explanation:

1) The formula for the lateral area of a cylinder is:

Lateral area = 2 π * radius * height

That formula is developed from the fact that when you "open" the cylinder through a line on the lateral area and perpedicular to the bases of the cylinder, the resultant figure is a rectangle with length 2π * radius and width equal to the height of the cylinder.

2) Calculations:

Lateral area = 2 π * 4 * 5 = 40π ≈ 40 (3.14) = 125.6 units^2

Given that f(x) = 5x2 − 100, find x.

Answers

Final answer:

To find x, we need to solve the quadratic equation 5x^2 - 100 = 0 using the quadratic formula.

Explanation:

To find x, we need to solve the quadratic equation 5x^2 - 100 = 0 using the quadratic formula. The formula is x = (-b ± √(b^2 - 4ac)) / (2a), where a, b, and c are the coefficients of the quadratic equation.

In this case, a = 5, b = 0, and c = -100. Plugging these values into the quadratic formula, we get:

x = (-0 ± √(0^2 - 4 * 5 * -100)) / (2 * 5)

Simplifying further, we have:

x = (√2000) / 10

Therefore, x equals approximately ±14.14.

Some steps to rewrite the expression x3 − x + 2x2 − 2 as a product of three factors are shown below:
Step 1: x3 − x + 2x2 − 2
Step 2: x3 + 2x2 − x − 2
Step 3: x2(x + 2) − 1(x + 2)
Which of the following best shows the next two steps to rewrite the expression? Step 4: (x2 + 1)(x + 2); Step 5: (x + 1)(x + 1)(x + 2)
Step 4: (x2 − 1)(x + 2); Step 5: (x − 1)(x + 1)(x + 2)
Step 4: (x2 − 1)(x + 2); Step 5: (x + 1)(x + 1)(x + 2)
Step 4: (x2 + 1)(x + 2); Step 5: (x − 1)(x + 1)(x + 1)

Answers

Your second option is correct.
Once you have the step 3 x2(x+2)-1(x+2)
You can combine the two (x+2)s and connect the x2 with the -1 as so:

(x2-1)(x+2)

Now, (x2-1) can be rewritten as:
(x-1)(x+1)

So total, for step 5:
(x-1)(x+1)(x+2)

I hope this Helps!

A coordinate plane is placed over an empty lot. You and a friend stand back-to-back at the origin. You face the positive y-axis and your friend faces the negative y-axis. You run 20 feet forward, then 15 feet to your right. At the same time, your friend runs 16 feet forward, then 12 feet to her right. She stops and hits you with a snowball.

Answers

We have a coordinate plane that is placed over an empty lot. So you and your friend are set at that coordinate system, so I'll give you the representation of each statement and the distance that the snowball travels from your friend's hand to you.

1. You face the positive y-axis and your friend faces the negative y-axis. 

This statement is represented in Figure 1. So you are the Red square and your friend is the Blue one. The arrows upon the squares mean that you are facing the positive y-axis and your friend the negative one. 

2. You run 20 feet forward, then 15 feet to your right. At the same time, your friend runs 16 feet forward,  then 12 feet to her right.

This is shown in Figure 2. So, at the coordinate system, you move 20 feet upward and 15 feet to your right, that is, you walk from the origin to the point [tex]P_{1}(15,20)[/tex] first moving through the positive y-axis and next through the positive x-axis. On the other hand, your friend moves 16 feet downward and 12 feet to her right, that is, she walks from the origin to the point [tex]P_{2}(-12,-16)[/tex] first moving through the negative y-axis and next through the negative x-axis. 

3. She stops and hits you with a snowball.

This statement is represented in Figure 3. So the snowball has been drawn in gray. The line from your friend to you is the distance the snowball runs.

4. Distance the ball runs.

We can get this answer by using the Distance Formula, that is:

[tex]d=\sqrt{(x_{1}-x_{2})^{2}+(y_{1}-y_{2})^2} \\ d=\sqrt{[15-(-12)]^{2}+[20-(-16)]^2} \\ \boxed{d=45ft}[/tex]

which number is prime

A.) 49
B.) 27
C.) 14
D.) 97

Answers

The answer is D.97 I am quite sure.

Final answer:

Among the options provided, only D.) 97 is a prime number because it only has two divisors: 1 and itself. All other options have more than two divisors and thus are not prime.

Explanation:

To determine which number is prime, we must recall that a prime number is a number that has only two distinct positive divisors: 1 and itself. Now, let's evaluate the options given:

A.) 49 is 7 times 7, so this is not a prime number.

B.) 27 is 3 times 9, hence this is not a prime number either.

C.) 14 is 2 times 7, which means it is not a prime number.

D.) 97 does not have any divisors other than 1 and itself, so it is a prime number.

So, the correct answer is D.) 97, since it fulfills the conditions for being a prime number.

The ratio of two sides of a parallelogram is 3:4 and the perimeter is 28 in. Find the lengths of the sides of the parallelogram.

Answers

We have w/h = 3/4 and 2w + 2h = 28 in;
Then, w = 3h/4;
2x(3h/4) + 2h = 28;
3h/2 + 2h = 28;
3h + 4h = 56;
7h = 56;
h = 8 in;
w = 24/4;
w = 6 in.

Sides of a parallelogram are equal to [tex]\boldsymbol{6}[/tex] inches and [tex]\boldsymbol{8}[/tex] inches if ratio of sides is [tex]3:4[/tex] and perimeter is equal to [tex]28[/tex] inches.

Parallelogram

A basic quadrilateral with two pairs of parallel sides is known as a parallelogram.

Ratio of two sides of a parallelogram [tex]=\boldsymbol{3:4}[/tex]

Let the sides be [tex]3x,4x[/tex].

Perimeter of a parallelogram [tex]=\boldsymbol{28}[/tex] in.

Perimeter of a parallelogram is equal to sum of all the sides.

[tex]3x+4x+3x+4x=28[/tex] in.

                       [tex]14x=28[/tex] in.

                           [tex]x=2[/tex] in.

So, sides are equal to [tex]3(2),4(2)[/tex] that is sides are equal to [tex]\boldsymbol{6}[/tex] inches and [tex]\boldsymbol{8}[/tex] inches.

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The graph below shows a system of equations:




The x-coordinate of the solution to the system of equations is _______________


PLEASE HELP!! :) :)

Answers

-x + y = 4
2x+3y= 2

-2x + 2y = 8
2x + 3y = 2

5y = 10

y= 2

-x + 2 = 4

-x = 2

x = -2

A rental agency charges 6% of a month's rent for finding an apartment. Nikolai is looking at apartments with monthly rents of $880, $960, nad $1050. What is the lowest fee he might pay?

Answers

%6 of $880 is:52.8
%6 of $960 is:57.6
%6 of $1050 is:64.8

Length of a rectangle is 4 inches less than twice it’s width of the perimeter is 70 inches what’s the dimensions?

Answers

W= width
L= length= 2W-4
Perimeter= 70

FIND WIDTH:
P= 2(L + W)
P= 2L + 2W
substitute 2W-4 for L
70= 2(2W-4) + 2W
multiply 2 by all in parentheses
70= (2*2W) + (2*-4) + 2W
70= 4W - 8 + 2W
combine like terms
70= 6W - 8
add 8 to both sides
78= 6W
divide both sides by 6
13= W

FIND LENGTH:
substitute w=13 to find width
L= 2W-4
L= 2(13)-4
L= 26-4
L= 22

CHECK:
P= 2(L + W)
70= 2(22 + 13)
70= (2*22) + 2(13)
70= 44 + 26
70= 70

ANSWER:
length= 22 inches
width= 13 inches

Hope this helps! :)

Any one know the next number

Answers

If there are only those five outcomes, then the probability values must add to 1. This represents 100%

0.20+0.38+0.24+a+2a = 1
3a+0.82 = 1
3a = 1-0.82
3a = 0.18
a = 0.18/3
a = 0.06

What is the simplified form of i13?

A. -i
B. 1
C. -1
D. i

Answers

First what you should know is that:
 i = root (-1)
 We note that in this case the exponent is odd.
 So we can rewrite the expression as:
 i ^ 13 = (i ^ 2) * (i ^ 2) * (i ^ 2) * (i ^ 2) * (i ^ 2) * (i ^ 2) * i
 i ^ 13 = (- 1) * (- 1) * (- 1) * (- 1) * (- 1) * (- 1) * i
 i ^ 13 = (1) * i
 i ^ 13 = i
 Answer: 
 the simplified form of i ^ 13 is: 
 D. i

The simplified form of i^13 is -i.

The simplified form of i^13 is -i.

To find the simplified form, remember that i^4 = 1, so i^13 = i^(4*3+1) = i^(4*3) * i = (i^4)^3 * i = 1^3 * i = i.

Therefore, the simplified form of i^13 is -i.

Part 1.] Which of the following is the inverse of the given function?
[tex]y= 3 x^{5}-4[/tex]
A.] [tex]y= \sqrt[5]{ \frac{x+3}{4}} [/tex]
B.] [tex]y= \sqrt[5]{ \frac{x-4}{3}} [/tex]
C.] [tex]y= \sqrt[3]{ \frac{x+4}{5}} [/tex]
D.] [tex]y= \sqrt[5]{ \frac{x+4}{3}} [/tex]

Part 2.] What is the inverse of the function [tex]y=3 e^{-4+1} [/tex]?
A.] [tex]y= \frac{1-log(x-3)}{4} [/tex]
B.] [tex]y= \frac{1-log( \frac{x}{3})}{4} [/tex]
C.] [tex]y= \frac{1-ln(x-3)}{4} [/tex]
D.] [tex]y= \frac{1-ln( \frac{x}{3})}{4} [/tex]

Answers

1. I believe the answer is D, y = fifth root of (x+4)/3
y = 3x⁵ - 4
Interchanging x and y
x = 3y⁵ - 4
solving for y in the equation; x=3y⁵-4
y = ((x+4)/3)^1/5

= ((x+4)/3)^1/5

2. inverse of the equation y = 3e^-4x+1
I think the answer is D; 
Interchanging the variables x and y 
 x= 3e^-4y-1
Solving for y in x = 3e^-4y +1
y= -(In(x/3)-1)/4
  = (1-In(x/3))/4


Please please help asap!
What is the volume of this oblique cone?

Answers

The correct answer is 60 cm

An expression is shown below:
3x3y + 15xy − 9x2y − 45y

Part A: Rewrite the expression so that the GCF is factored completely. Show the steps of your work.

Part B: Rewrite the expression completely factored. Show the steps of your work.

Answers

Notation
I imagine that the expression you are asked to work with is:
[tex]3 x^{3}y+15xy-9 x^{2} y-45y [/tex]

When you use a keyboard it is customary to use "^" to denote an exponent is coming so you could have written: 3x^3y+15xy-9x^2y-45y just to be clear.

PART A
To factor out the GCF we are looking for the greatest factor among the terms. Looking at the coefficients (the numbers) the largest number they can all be divided by is 3 so we will pull out a 3. Notice also that each term has a y in it so we can pull out that.

This gives us: [tex] 3 x^{3}y+15xy-9 x^{2} y-45y=3y( x^{3}+5x-3 x^{2} -15)[/tex]

To factor is to write as a product (something times something else). It undoes multiplication so in this case if you take what we got and multiplied it back you should get the expression we started with.

PART B
Start with the answer in part A. Namely, [tex]3y( x^{3}+5x-3 x^{2} -15)[/tex]. For now let's focus only on what is in the parenthesis. We have four terms so let's take them two at a time. I am separating the expression in two using square brackets. [tex][( x^{3}+5x)]-[3 x^{2} -15][/tex]

Let's next factor what is in each bracket:
[tex][( x^{3}+5x)]-[3 x^{2} -15] = [x( x^{2} +5)]-[3( x^{2} +5)][/tex]

Notice that both brackets have the same expression in them so now we factor that out: [tex] [x( x^{2} +5)]-[3( x^{2} +5)] = (x-3)( x^{2} +5)[/tex]

Our original expression (the one we started the problem with) had a 3y we already pulled out. We need to include that in the completely factored expression. Doing so we get: [tex]3 x^{3}y+15xy-9 x^{2} y-45y =(3y) (x-3)( x^{2} +5)[/tex]

A right triangle has legs that are 18 centimeters and 27 centimeters long. What is the length of the hypotenuse?
Enter your answer as a decimal in the box. Round your answer to the nearest hundredth.

Answers

The answer is 32.45 because 18^2+27^2=x^2

Answer:

the length of the hypotenuse = 32.45 centimeters

Step-by-step explanation:

A right triangle has legs that are 18 centimeters and 27 centimeters long

In a right angle triangle , to find hypotenuse we use Pythagorean theorem

[tex]c^2= a^2+b^2[/tex]

where a  and b are the length of two legs

Given a= 18  and b = 27

Lets find out C , plug in all the value in the formula

[tex]c^2= 18^2+27^2[/tex]

[tex]c^2=324 +729= 1053[/tex]

c^2 = 1053

now take square root on both sides

c= 32.45

So the length of the hypotenuse = 32.45 centimeters

what does this mean:

πr
(π with an r next to it)

Answers

Hi!

The mathematical expression πr means pi times the radius.

                 π means pi or 3.14
                 r means radius which is half of a diameter

When these two symbols are put right next to each other like so πr it means you are multiplying them.

                  (π)(r)
                  π·r
                  (3.14)r

Final answer:

πr typically represents an expression involving the mathematical constant π and the radius of a circle (r). In mathematics, this is commonly part of formulas to calculate properties of circles, such as area or circumference.

Explanation:

When you see πr in mathematics, it typically represents the expression involving the mathematical constant π (pi), which is the ratio of a circle's circumference to its diameter, and r, which stands for the radius of the circle.

The actual value of π is approximately 3.14, but it is an irrational number, meaning it extends to infinity without repeating. In many equations and formulas, πr could be part of a larger expression to calculate properties related to circles, such as the area or circumference.

For example, the formula for the circumference of a circle is 2πr, and the formula for the area of a circle is πr2. Without additional context, πr could be part of these or other mathematical expressions related to circles. It is not to be confused with the Greek letter rho, which can also be represented as p and is used in different ways in physics and other sciences.

Trevor is analyzing a circle, y2 + x2 = 49, and a linear function g(x). Will they intersect?

Answers

We have a circumference that is given by the following equation:

[tex]x^{2}+y^{2}=49[/tex]

We can write this equation in its standard form as follows:

 [tex]x^{2}+y^{2}=7^{2} \\ where \ the \ radius \ r=7[/tex]

On the other hand, the linear function is given as the following table:

[tex]x \ \ \ \ \ \ \ \ g(x) \\ -1 \ \ -9.2 \\ 0 \ \ \ \ \ -9 \\ 1 \ \ \ \ \ -8.8[/tex]

To check if the circle and the line intersects, let's substitute the equation of the line into the equation of the circle to see if there is a real solution, so:

[tex]x^{2}+(0.2x-9)^{2}=49 \\ \\ \therefore x^{2}+0.04x^{2}-3.6x+81=49 \\ \\ \therefore 1.04x^{2}-36x+32=0 \\ \\ Solving \ for \ x: \\ x_{1}=33.70 \\ x_{2}=0.91 \\ \\ Solving \ for \ y: \\ y_{1}=0.2(33.70)-9=-2.26 \\ y_{2}=0.2(0.91)-9=-8.18[/tex]

 Finally the intersects are:

 [tex]P_{1}(33.70, -2.26) \ and \ P_{2}(0.91, -8.18)[/tex]

To the nearest tenth, what is the area of a circle whose diameter is 9 feet? Use 3.14 for π . Enter your answer in the box. ft2

Answers

Hello.
Area of a circle = 3.14 * r^2
D = 2r
D = 9
r = 4.5
Area = 3.14 * (4.5)^2
Area = 63.6 ft^2
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