At a used book sale, 5 books cost $15. What is the cost per book?

Answers

Answer 1

Answer:

$3/book

Step-by-step explanation:

cost per book means divide the price of all the books by the number of books

$15/(5 books) = $3/book


Related Questions

Evaluate the expression when y = 3 and z = -1/5.

1/2z - 2/3y = ?

Thanks, if you help!
(7th grade ‘algebra’)

Answers

Answer:

-9/10

Step-by-step explanation:

Plug In: y = 3 z = -1/5

1/2z - 2/3y

Multiply:

1/2(-1/5) - 2/3(3)

Solve:

-1/10 - 2 = -.1 - 2 = -.9 = -9/10

There are 80 seats on a train. 76 of the seats are empty. What percentage of the seats on the train are empty?

Answers

Answer:

95%

Step-by-step explanation:

Answer:

95%

Step-by-step explanation:

Multiply both 80 and 76 by 100, to get 800 and 760. Then divied both by 8 to get 100 and 95. 95 is 95% of 100, and so 76 is 95% of 80. Hope this helps!

A rectangle has a length of 8.3 cm and a perimeter of 22.4 cm.
What is the width of the rectangle in decimal form?​

Answers

Answer:

the perimeter is simply 2L + 2W

So lengthy 8.3

2(8.3) + 2(w) =22.4

16.6=2(w) =22.4

2(w) = 5.8

w = 5.8 divide by 2

The width is 2.9

Find the solution of the system of equations.

-x+2y=-15
8x-2y=-20

Answers

Answer:

the answer is (-5,-10)

hope this helps :)

is there anyone who can help by inviting me on the topper, please help I will give brainlist​

Answers

Answer:

the what?

Step-by-step explanation:

lma.o

i help to answer this problem

Answers

Answer:

4x+9+x+17=180-29

5x+26=151

5x=125

x=25

The number of mosquitoes in Anchorage, Alaska (in millions of mosquitoes) as a function of rainfall (in centimeters) is modeled by: m(x)=-x^2+14xm(x)=−x 2 +14xm, left parenthesis, x, right parenthesis, equals, minus, x, squared, plus, 14, x What is the maximum possible number of mosquitoes?

Answers

Answer:

The maximum number of mosquitoes is 7

Step-by-step explanation:

Given

[tex]m(x)= x^2 + 14x[/tex]

Required

Determine the maximum number of the function

First, we differentiate the given function w.r.t x

[tex]m'(x) = -2x + 14[/tex]

Then, we equate m'(x) to 0

[tex]0 = -2x + 14[/tex]

Lastly, we solve for x

[tex]0 = -2x + 14[/tex]

Make 2x the subject

[tex]2x = 14[/tex]

Make x the subject

[tex]x = 14/2[/tex]

[tex]x = 7[/tex]

Answer:

49 Million

Step-by-step explanation:

Please help me out, What is the slope?

Answers

Answer:

-1/2

Step-by-step explanation:

Hope this helps!

what are the answers?

Answers

Answer:

if you can please explain more of the context (what do they mean by turn around sentence) I'd be happy to help!

Graph ​y=47x−2​.

Use the line tool and select two points on the line.

Answers

Answer :slope is 47  y intercept is (0,-2)

Step-by-step explanation:

A school had 1,200 students last year and only 984 students this year. What was the percentage decrease in the number of students?

Answers

Answer:

46%

Step-by-step explanation:

Convert 50°F to Celsius.
_____°C

Answers

Answer:

10°C

Step-by-step explanation:

(50°F − 32) × 5/9 = 10°C

Answer:

10 degrees Celsius

Step-by-step explanation:

3/4 of 24 is 3 groups of 6, which is 18. So Han ate 18 less than Tyler, or Han at 6. So you take the 24(x) and you subtract 24 of 24(-3/4x) to get to Han total.

Answers

Answer:

Step-by-step explanation:

Let the total amount ate by Tyler and Han be 24

Let the amount Tyler ate be x

Amount Han ate be y

If Tyler ate 3/4 of the total, then Amount ate by Tyler is expressed as;

x = 3/4of 24

x = 3/4×24

x = 3×6

x = 3(6)

x = 18

Hence the amount Tyler ate is 18

If Han ate 18 less than Tyler, the amount ate by Han will be;

Han y = 24-(3/4(24)

y = 24-{3(6)}

y = 24-18

y = 6

Hence the total Han ate is 6

3. When did the law become effective?

Answers

Answer:

which law?

Step-by-step explanation:

which is equivalent to 15n^6 ÷ 5n^3
A. 1/3n^2
B.1/3n^6
C. 3n^6 ÷ n^3
D.3n^3

Answers

I think it’s C , don’t trust me but that’s what I think

Answer:a

Step-by-step explanation:

help plz im not smart lolz

Answers

Answer:

D or $8.00

Step-by-step explanation:

The rate of change is every hour is 8. You can tell with the plotted points go up (1,8) each time. Hope this helps.

Two sides of an obtuse triangle measure 9 inches and 14 inches. The length of longest side is unknown. What is the smallest possible whole-number length of the unknown side? 16 inches 17 inches 24 inches 25 inches

Answers

Answer:

17 inches

Step-by-step explanation:

An obtuse triangle is the triangle in which one of the side is the longest. It contains an obtuse angle and the longest side is the side that is opposite to the vertex of the obtuse angle.

Let the three sides of the obtuse triangle be a, b and c respectively with c as the longest side. Let a = 9 inches and b = 14 inches.

Now we know that for an obtuse triangle,

[tex]$c^2 > a^2 +b^2$[/tex]

[tex]$c^2 > (9)^2 +(14)^2$[/tex]

[tex]$c^2 > 81 +196$[/tex]

[tex]$c^2 > 277$[/tex]

c > 16.64

Therefore the smallest possible whole number is 17 inches.

It should be noted that the length of the unknown side will be 17 inches.

From the information given, we are informed that the sides of an obtuse triangle measure 9 inches and 14 inches.

Therefore, the third side will be:

c² = 9² + 14²

c² = 81 + 196

c² = 277

c = ✓277

c = 16.64

c = 17

In conclusion, the correct option is 17 inches.

Learn more about triangles on:

https://brainly.com/question/17335144

please help i’ll give brainliest

Answers

Answer:

Step-by-step explanation:

1 in is 35 feet

1.25 * 35= 43.75 feet

Answer:

43.75

Step-by-step explanation:

1.25 * 35 = 43.75

-4p+9=-5 can someone help me with P

Answers

Answer:

= 7/2

Step-by-step explanation:

p = 3.5

Step-by-step explanation:

....................

Each unit on the map represents 1 mile. To the nearest tenth of a mile, what is the distance from the
library to the supermarket?

Answers

Answer:

5.8 miles

Step-by-step explanation:

Distance of library(3, 2) to the supermarket (6, 7) using distance formula, [tex] d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2} [/tex]

Where,

[tex] (3, 2) = (x_1, y_1) [/tex]

[tex] (6, 7) = (x_2, y_2) [/tex]

Plug in the values into the formula

[tex] d = \sqrt{(6 - 3)^2 + (7 - 2)^2} [/tex]

[tex] d = \sqrt{(3)^2 + (5)^2} [/tex]

[tex] d = \sqrt{9 + 25} [/tex]

[tex] d = \sqrt{34} = 5.8 miles [/tex] (nearest tenth).

the fifth oneeee!!!!

Answers

Answer:

C because 5 times any of the numbers do not equal the y value

Step-by-step explanation:

Could someone help me complete this chart? It’s kinda confusing.

Answers

Answer:

1. - completed

2. expanded = a · a · a · a

3. base = a | exponent = 5 | expanded = a · a · a · a · a

4. - completed

5. base = c | exponent = 3 | expanded = c · c · c

6. base = c | exponent = 4 | expanded = c · c · c · c

7. base = m | exponent = 2 | expanded = m · m

8. base = m | exponent = 3 | expanded = m · m · m

9. power = y⁵ | base = y | exponent = 5

10. power = y⁸ | expanded = y · y · y · y · y · y · y · y

hope this helps ! brainliest ?

Please help me I don’t understand this and I really need to get my grade up.

Answers

Answer:F=7

Step-by-step explanation:

The answer is D because remember, altitudes are segments that connect a vertex with the opposite to form right angles. The orthocenter is where the the altitudes all intersect one another.

2000x+6000=3600-40000

Answers

Answer:

x = -21.2

Step-by-step explanation:

2000x + 6000 = 3600 - 40000

2000x = -36400 - 6000

x = -42400 / 2000

x = -21.2

Hope this helped!

Answer:

x = − 106/5

Step-by-step explanation:

How to solve your question

Your question is

2000x+6000=3600−40000

Subtract the numbers

2000x+6000=3600−40000

2000x+6000=−36400

Subtract 

6000

60006000

 from both sides of the equation

2000+6000=−36400

2000x+6000=-364002000x+6000=−36400

2000+6000−6000=−36400−6000

Divide both sides of the equation by the same term

2000=−42400

2000x=-424002000x=−42400

20002000=−424002000

\frac{2000x}{{\color{#c92786}{2000}}}=\frac{-42400}{{\color{#c92786}{2000}}}20002000x=2000−42400

5

Solution

x= −106/5

Karra is at the dollar store buying bags of chips for her sleepover party. For every 5 bags of chips she buys, she pays $6. What is the price per bag of chips? *Money always has two numbers after the decimal.

Answers

Answer:

$1.20

Step-by-step explanation:

Given that:

Price paid to buy 5 bags of chips = $6

To find:

Price per bag of chips in two digits after the decimal.

Solution:

To find the price of each bag of chips, we need to divide the price of 5 bags of chips with 5.

i.e. we need to divide $6 with 5, then we will get the price of each bag of chips.

[tex]\text{Price of each bag of chips}=\dfrac{\text{Price of 5 bags of chips}}{5}\\\Rightarrow \dfrac{\$6}{5} = \bold{\$1.2}[/tex]

Therefore, the answer is:

Price of each bag of chips is $1.2.

8. The value of y is directly proportional to the value of x. If y = 35 when x = 140, what is the value of y when x = 70? Record your answer and fill in the bubbles on your answer document.​

Answers

Answer:

y = 17.5

It says y is proportional to x, and y = 35 when x = 140, but we don't know what y is when x = 70. So since y is proportional to x and x = 140 we have to find out how 140 gets to 70, and that is dividing by 2 because 70 is half of 140. So then you would just divide the previous y value, 35, by 2, and you would get 17.5. And there you go, you've got you're answer.

Help me with this one please

Answers

Answer:

?=78

Step-by-step explanation:

40% of (100-20 of 300) is equal to​

Answers

Answer:

-2360 is the calculated answer

What is the slope of the line that passes through
the points (-4, -8) and (-8,-6)?

Answers

Answer:

-0.5 or -1/2

Explanation:

[tex] \frac{y2 - y1}{x2 - x1} [/tex]

to find the slope

-2

4 up, 2 to the left. 4/2 = 2, but becuase it is going down to the right, you make it negative.

Please make me the brainliest. Thank you

I asked this already, but can somebody provide an answer with an explanation?

Answers

Answer:

41 cm²

Step-by-step explanation:

Area of triangles

A(ABN) = 1/2b₁hA(CDM)= 1/2b₂h

Area of trapezoid

A(ABCD) = 1/2(b₁ + b₂)h

Since the area of trapezoid is same as the sum of the areas of the triangles, we have:

A = 23 + 18 = 41 cm²

Concepts:

Finding areaArea of figures

Answer: 41 cm²

Triangle lengths:

A(ABN) = 1/2b₁h

A(CDM)= 1/2b₂h

Trapezoid length:

A(ABCD) = 1/2(b₁ + b₂)h

A = 23 + 18 = 41 cm²

Other Questions
PLEASE ANSWER QUICK One year, the population of a city was 164,000. Several years later it was 182,040. Find the percent increase. What would Most likely happen if the number of salmon decreased??A. The Plankton population would rise.B. The Shrimp population would decrease.C. The Shrimp population would increase.D. Salmon would become extinct. please solve this question In this type of election, only members of a political party can vote?Petition Open primary Closed primary Nominating convention The "Golden Ratio" appears to apply only to Caucasians.a) Trueb)False HURRY WILL MARK BRAINLESS Which expression is equivalent to (C) - - are the angels vertical or adjacent What is energy?A. A change that appears in an object when forced is applied.B. The property of a body that gives it mess.C. The amount of heat produced by the body.D. The ability of an object to undergo change.E. The ability of a body to move. 3. Which interval represents the range of the function h(x) = 2x2 - 12x + 13 ? A pencil factory has increased the amount ofpencils produced from 1200 to 1500 pencils. Whatis the percentage increase?HURRY On Monday, I bought 1 dog and 2 cats for a total cost of $6.75. On Tuesday, /bought 1 dog and 3 cats for a total cost of $9.25. Can you find the price of eachitem In Unit VI, we see the rise of a strong middle class. How does the middle class of Jackson's America compare to today's middle class All of the following were internal problems in the Soviet Union EXCEPT?o Increased military spendingO Economic inefficiencyO Rising NationalismO Lack of natural resources Most generation of electricity involves turning turbines to spin coils of metal. However some do not. Give a type of energy that does not involve spinning coils of metal. How does it generate electricity? What is one experience Percy faces in chapter 8. Provide evidence from the text support. The book name is Percy Jackson & the Olympians: The Lightning Thief 2) Read and answer the following12 pointsKenisha goes to the market with $30 inher wallet. She is going to buy candy andwater bottles. Each candy at the marketcosts $2 and each water bottle costs $1.Which of the following equations canrepresent the amount of candy and waterKenisha can buy at the market?$30 = c + $2wO $30 = $2c + W$30 + w = $20$30 -2C = -W Where does the pendulum have the most potential energy Develop Claims Quick Check- - For Connexus Students - What is the purpose of writing an argument? ( CORRECT) -To persuade readers to agree with the author's opinion To plan what evidence a reader will want to read on a topic To persuade readers not to take action on a topic they have read To plan the first step in the process of writing What is important when writing an essay claim? that the claim is something on which everyone will agree that the claim is generally accepted as true( CORRECT)-that the claim is debatable that the claim states your broad opinion on a topicWhat does it mean for a claim to be "debatable"?( CORRECT)-an idea that is open to discussion, differing opinions, or argument an idea to be shared in front of a group of people an idea about a topic that is not grounded in evidence an idea that can be supported by facts After writing a broad claim, what is the next step in the process of writing an argument? ( CORRECT)-revise the claim so that it is narrower research information about the claim develop a conclusion of the argument write an outline of the argument I need help with this one.... i really don't understand it Decide whether the sentence is grammatically CORRECT or INCORRECT as written.Yo no dico nada.correctincorrect