the town libary is raising money by selling old books for 4$ each write an equation that can be used to find the amount of money raised if the number of books sold is known.Let x represent the number of books sold and y represent the amount raised.

Answers

Answer 1

Answer:

6550

Step-by-step explanation:

You can put this solution on YOUR website!

Call the number of hardcover and paperback books, h and p.

Thus  

h + p = 8 and the value equation is

4h + 2p = 26

Now multiply the top one by four and subtract from the second one...we get

4h + 2p = 26

-(4h + 4p = 32)

----------------

-2p = -6

p = 3 so that

h = 5   x +  y = 8,    (1)

4x + 2y = 26,   (2)

where x and y are the numbers of hardcover and softcover books respectively.

To solve, multiply the equation (1) by 2 (both sides) and then distract it from the equation (2). You will get

4x - 2x = 26 - 16,   or

2x = 10,   or   x = 5 - the number of hardcover books purchased.

Then from the equation (1) you get y = 3.

Check. 4*x + 2*3 = 4*5 + 2*3 = 26. OK.


Related Questions

wil give bianleast
What are the first four terms in the multiplication pattern given by the formula: 2 • 4n?


8, 32, 128, 512


8, 32, 64, 512


2, 8, 32, 128,


32, 128, 512, 2048

Answers

Answer: B, but technically, all of them are correct except C.

Step-by-step explanation:

First, you fill in 1 for n:

= 2 x 4(1)

= 2 x 4

= 8

Next, I filled in 4 for n:

= 2 x 4(4)

= 2 x 16

= 32

Then, I filled in 8 for n:

= 2 x 4(8)

= 2 x 32

= 64

You can already figure this one out, and the answer is B.

Answer:

all are correct except the third choice.

What is the solution to log Subscript 5 Baseline (x + 30) = 3

x= -95
x= -5
x= 5
x=95

Answers

Answer:

95

Step-by-step explanation:

can someone please find the volume of this ?

Answers

Answer:

998.4 m to the 3rd power

Step-by-step explanation:

HELP ASAP 30 POINTS!~!!!


You start with a penny which doubles each day for 30 days. How much money would you have after 30 days?

Answers

I got 536870912 hope this helps

To multiply two fractions, multiply the numerator by the numerator
and the denominator by the
RETRY

Answers

Answer:

multiply the numerator by the other numerator and denominator by the other denominator

1/2×2/4=2/8=1/4

HOPE YOU FOUND IT HELPFUL , PLEASE MARK AS BRAINLIEST

you multiply the denominator by the denominator

Which types of quadrilaterals have four congruent angles

Answers

Answer:

I'm gonna go with rectangle and square

Step-by-step explanation:

rectangle: 2 pairs of parallel sides. 4 right angles (90°). Opposite sides are parallel and congruent. All angles are congruent.

Square: 4 congruent sides. 4 right angles (90°). Opposite sides are parallel. All angles are congruent.

The rectangle and square are the types of quadrilaterals that have four congruent angles. Then the correct option is A.

What is a quadrilateral?

It is a polygon with four sides. The total interior angle is 360 degrees.

Types of the quadrilateral are as follows;

Square: All the angles of square are right angle that is 90°.Rectangle: All the angles of rectangle are right angle that is 90°.Rhombus: Opposite angles are same and adjacent angles are difference.Parallelogram: Opposite angles are same and adjacent angles are difference.

Thus, the rectangle and square are the types of quadrilaterals that have four congruent angles.

Then the correct option is A.

More about the quadrilateral link is given below.

https://brainly.com/question/13805601

#SPJ5

HELP!!!!!!!!!



Plz Show working:)​

Answers

Step-by-step explanation:

Hope this help you !! ;))

answer of (ii) : perimeter = 66m

area = 272m^2

Which ordered pair in the form (x,y) is a solution of this equation?
7x-5y=28

A) (-3,-2)
B) (-2,-3)
C) (0,4)
D) (4,0)

Answers

D
7•4 =28, -5•0 =0... 28+0=28

math question screen shot down below

Answers

Answer:

A

Step-by-step explanation:

If the current amount he has is B and its 7 LESS then he had earlier add 7 back to find the amount he add  at the start.

Answer:

b+7,Option 1

Step-by-step explanation:

Let the number of buttons Cole had at first be a,

We know,now he has b buttons remaining which is 7 less than a

In other words,

a-7=b

or,a=b+7

Please help due in 30 min

Answers

Answer:

take your time dont rush

Step-by-step explanation:

How do you find the area of a pizza with a diameter is 18 inches

Answers

Answer:

The area of the pizza with a diameter of 18 inches is 254.34 inches.

Step-by-step explanation:

The formula to find the area of a cirlce is A = pi x r^2 or pi times radius squared.

Second, we need to find our radius. To find the radius we need to divide the diameter by 2 to get the radius. In this case; 18 divided by 2 is 9.

Then, we need to plug the radius in the formula:

A = 3.14 x 9^2

9 squared or 9 times 9 equals 81

Next, multiply 81 by 3.14 and you get 254.34

Lastly, add the units of measurement, which would be inches.

Mr. Sanders teaches a painting class. He makes the histogram below to summarize the
number of paintings each student has completed since the class began. Mr. Sanders says
that the histogram shows that of the students have finished 12 or more paintings.
Number of Paintings
Finished by Students
Number of Students
N
0-2 3-5 6-8 9-11 12-14 15-17
Number of Finished Paintings
What error did Mr. Sanders likely make, and what is the actual fraction of students who have
completed 12 or more paintings? Use the drop-down menus to explain his reasoning and correct
his mistake.
Mr. Sanders likely found that of the students have completed 12 or more paintings because
there are Choose... bars on the histogram, and choose... of the bars represent
students with 12 or more completed paintings. The actual fraction of the students who have
completed 12 or more paintings is Choose...​

Answers

Answer:

Answer: (1st box) = 6 (2nd box) = 2 (3rd box) = 2/3

Step-by-step explanation:

I got this question too and I got it right. ❤️

Mr. Sanders most certainly discovered that one-third of pupils have done 12 or more paintings because the histogram has six bars, two of which reflect students who have completed 12 or more paintings. The actual percentage of pupils who have completed 12 or more paintings is [tex]\frac{4}{19}[/tex].

Mr. Sanders' class has 19 students. That histogram has six bars. He most likely assumed it because [tex]\frac{2}{6} = \frac{1}{3}, \frac{1}{3}[/tex] of his pupils finished 12 or more paintings. That is not the case. 2 different isn't even a whole number. The other dates are[tex] \frac{2}{3}, \frac{4}{19}, \ and \ \frac{4}{17}[/tex]. Two-thirds and 4 are not whole figures either. That leaves  [tex]\frac{4}{19}[/tex].  Four-nineteenths equal a complete number four. Since there are no such things as partial pupils, we must enter  [tex]\frac{4}{19}[/tex].

Therefore, the answer is "[tex]\to (1^{st}\ box) = 6 (2^{nd}\ box) = 2 (3^{rd}\ box) = \frac{2}{3}[/tex]"

Learn more:

brainly.com/question/20427581

Jarods bicycle wheel has a diameter of 27 inches. How far will the wheel have traveled in one full rotation? Use 3.14 for pi

Answers

Answer:

84.78 in

Step-by-step explanation:

in order to figure out how long it will travel you will need to find the circumference in order to do that you have to do [tex]2 *\pi * radius[/tex] so that is  [tex]2*3.14*13.5[/tex] which equals 84.78  

A bowling alley charges $3 per shoe rental and $4 per person per game. If you and a friend bowl 3 games and each rent a pair of shoes, how much will it cost in all?

Answers

The would spend a total of 24 of the games and then an additional 6 on shoes the grand total would be $30.

Answer: $36

Step-by-step explanation:

3 times 2 times 2 = 12

4 times 2 times 3 = 24

add 12 and 24

answer = $36!

Find the measure of angle U

Answers

Answer:

30 degrees

Step-by-step explanation:

first you have to find angle TSU which is 70 degrees

you get this my doing 180 - 110

then you add up all the angles in the triangle

so, 80 plus 70

you get 150

then you do 180 - 150 and get 30 degrees

{1, 5, 10, 15} {1, 3, 5, 7} Which of the following shows the union of the sets?

Answers

Answer:

{1, 5}

Step-by-step explanation:

the union is all the values in both sets. The only shared numbers in these two sets are 1, and 5. therefore, the union of the sets is {1, 5}

Hope this helps have a great day! <3

also, pls mark brainliest!!

Surface area of a cone in terms of pi

Answers

The answer is b I made an 97 on the test

X is at least 2" can be represented by x > 2.

True
False

Answers

Answer:

True

Step-by-step explanation:

Answer: False

Explanation: if x was atleast 2, the sign would have to be a ‘greater than or equal to’ sign, not just a greater than sign

hope this helped! :)

abc2 at a = 4, b = 1/4, c = 5

x + y + z/3 at x = 1, y = 3, z = 5

(p + q)2 at p = 8, q = –5

Answers

Look at the attached picture

Hope it will be helpful to you...

The radius of a sphere is 8 centimeters. Which formula can be used to find the volume of the sphere?

Answers

Hey there! I'm happy to help you!

The formula for the volume of a sphere is [tex]V=\frac{4}{3} \pi r^{3}[/tex], which is the the radius cubed multiplied by pi and 4/3. There are a lot of interesting proof videos out there about how this formula is derived and it is super cool and you would love it!

If our radius is 8 centimeters, we can plug it in like this:

[tex]V=\frac{4}{3} \pi (8)^{3}[/tex]

I hope that this helps! Have a wonderful day!

Which statement must be true?

Answers

Answer:

A

the two are parallel

Step-by-step explanation:

I hope its right

good luck!

help me you don’t have to explain!!

Answers

Answer:

option b ................

the choice you should choose is answer b

Which statement is true about the circumference of a circle?

Answers

The circumference is equal to the radius of the circle. The circumference is equal to the diameter of the circle. The circumference is found by multiplying mc005-1.

Answer:

A) The circumference is equal to the radius of a circle.

Step-by-step explanation:

Here are the options:

A) The circumference is equal to the radius of the circle.

B) The circumference is equal to the diameter of the circle.

C) The circumference is found by multiplying Pi by the radius.

D) The circumference is found by multiplying Pi by the diameter.

The circumference of a circle is the distance around the circle. The radius is a line segment with one end point on the circle and the other endpoint on the center of the circle.

does anyone know this ????

Answers

Answer:

What exactly is the question asking? Is that the full question? The answer is 20

Step-by-step explanation:

Answer:

20 sq units

Step-by-step explanation:


Graph the equation below by plotting the
y-intercept and a second point on the
line. When you click Done, your line will
appear.

Answers

Answer:

Step-by-step explanation:

Answer: Second point is (0.833,0)

Step-by-step explanation:

1. To determine slope you must use this formula Y= Mx + B

- M is the slope (positive or negative)

- B is the y-intercept

2. To find y-intercept you use (0, B)

3. M = -6/1

- 6 units down and 1 unit to the right since the slope is negative.

math question screen shot down below

Answers

Answer:

48

Step-by-step explanation:

100-52=48

Answer:

48

Step-by-step explanation:

1.First u have to order the numbers from least to greatest.

-52,58,66,71,72,79,82,84,85,94,98,100

2.Find the lowest number and the highest number.

-52 nd 100

3.Subtract the 2 numbers

100-52=48

You and your friend are playing a game where you spin a circular spinner with nine numbered sections of equal
size. In this game, you win if the spinner lands on 1, 4, or 7. Your friend wins if the spinner lands on 2.5. or 8.
You tie if the spinner lands on 3. 6. or 9.
All the possible outcomes of the game are listed in the sample space
S = {1,2,3,4,5,6,7,8,9).
If we take A = {1.3.4.6:7.9} as a subset of the sample space, which of the statements below describe the
subset A?
Choose all answers that apply:

Answers

Answer:

-The subset consists of all of the outcomes where you do not lose.

-The subset consists of all of the outcomes where your friend loses, or there is a tie.

Step-by-step explanation:

Khan Academy

Statements that describe the subset A are option (a) and option (d).

What is a subset?

A set of which all the elements are contained in another set. Subset can be empty or equal to the set.

Given sample of space S = {1,2,3,4,5,6,7,8,9}

And subset M of S = {1,4,7} where you win in the spinner game.

If the spinner lands on the subset N of S = {3,6,9} , you tie.

Given A = {1,3,4,6,7,9,} is a subset of S.

Now to verify the options;

In option (a) ;

The subset consists of all the outcomes where you win that means your friend loses or there is a tie. Because subset A does not contain any elements of subset {2,5,8},  where you lose.

In option (b) ;

The subset consists of all the outcomes where your friend ties. That means subset should only contain the elements of subset N = {3,6,9}. Which is clearly not. So this option is incorrect.

In option (c) ;

The subset consists of all the outcomes where there is not a tie and your friend does not win. That means subset S should only contain the elements from {1,4,7}. which is contradiction so this option is also incorrect.

In option (d) ;

The subset consists of all the outcomes where you do not lose. That means subset does not have any element from {2,5,8}.

Hence Correct answers are option (a) and option (d).

To learn more about the subset;

https://brainly.com/question/23454979

#SPJ2

The complete question is ;

You and your friend are playing a game where you spin a circular spinner with nine numbered sections of equal size. In this game, you win if the spinner lands on 1,4, or 7. Your friend wins if the spinner lands on 2,5, or 8. You tie if the spinner lands on 3,6, or 9.

All the possible outcomes of the game are listed in the sample space S= { 1,2,3,4,5,6,7,8,9} If we take A= { 1,3,4,6,7,9} as a subset of the sample space, which of the statements below describe the subset A?

a) The subset consists of all the outcomes where your friend loses or there is a tie.

b) The subset consists of all the outcomes where your friend ties.

c) The subset consists of all the outcomes where there is not a tie and your friend does not win.

d) The subset consists of all the outcomes where you do not lose.

What is the area of the following right triangle?

Answers

Answer:

  30 square units

Step-by-step explanation:

The area of the given right triangle can be found a couple of ways:

Pythagorean theorem

The missing side length can be found using the Pythagorean theorem relation between the sides:

  c² = a² +b²

  13² = a² +5²

  a² = 169 -25 = 144

  a = √144 = 12

Then the area is ...

  A = 1/2ab = 1/2(12)(5) = 30 . . . square units

__

Trigonometry

The angle at lower right can be found from the trig relation ...

  Cos = Adjacent/Hypotenuse

  cos(A) = 5/13

  A = arccos(5/13) ≈ 67.38°

The area can be found from these side lengths and the angle:

  A = 1/2bc·sin(A)

  A = 1/2(5)(13)sin(67.38°) = 30 . . . square units

_____

Additional comment

The sine of the angle can be computed from the cosine using the identity ...

  sin(x) = √(1 -cos²(x))

In this case, the sine of the angle would be found to be 12/13, so the area would be computed as ...

  A = 1/2(5)(13)(12/13) = 1/2(12)(5) . . . . same as using the Pythagorean theorem

Brainliest and 10 points for answer!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

How do you find the x- and y-intercepts of an equation?

A) To find the x-intercept, substitute 0 for x. To find the y-intercept, substitute 0 for x.

B) To find the x-intercept, substitute 0 for x. To find the y-intercept, substitute 0 for y.

C) To find the x-intercept, substitute 0 for y. To find the y-intercept, substitute 0 for x.

D) To find the x-intercept, substitute 0 for y. To find the y-intercept, substitute 0 for y.

Answers

Answer:

To find the x-intercept of a given linear equation, plug in 0 for 'y' and solve for 'x'. To find the y-intercept, plug 0 in for 'x' and solve for 'y'.

Answer:

C

Step-by-step explanation:

A, B, and D don't make sense

Which is the graph of g(x) = [X + 3]?

Answers

Answer

D or the fourth one because i took the quiz and got it right

Other Questions
The churches of Revelation 2 and 3 are arranged on a map in roughly a straight line north to southA) TrueB) False What is 2/3 4/5 = ? A shelf at a grocery store contains 500 packages of corn and flour tortillas. If 22% of the packages are flour tortillas how many packages are corn tortillas Need help Soon as possible Which is the longest length?a 1 yd. 20 in.b 1yd. 1 ft.40 in.d 3 ft. 75 POINTS!!! One reason male peacocks spread their tail feathers is to attract a mate. How does choosing a male with a bright, full tail increase a peahens chance of producing healthy peachicks? How many boys are there in an introductory geology course if 360 students are enrolled and there are five boys to every seven girls? If X - 14 = 465, what is the value of X? you flip a coin 20 times. you land on heads 13 times. what is the percent error? nickel is t coin as shirt is to 7. What is the value of the expression 3(2 - 7) Mi jefe quisiera que ustedeseso para maana. (dejar)o dejaramosO dejarOdejarano dejbamos find the vertex of the parabola represented by the function f(x)= -2x^2 Mi abuela_ser ms joven. (querer)ooOoquisieraqueraquierequerr When you are saving money you are: Could u please balance this equation In Humans, the liquid wastefiltered by the kidneys is storedin the ......?A) StomachB) BladderC) LungsD) I'm not sure. I needmore help with thistopic. Uranium-235 has 92 protons. How many neutrons does it have? Help with the picture What is used in the name of ionic compounds containing a cation with multiple charges to indicate which charge?(No answers to display)