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

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!

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

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

Find the solution of the system of equations.

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

Answers

Answer:

the answer is (-5,-10)

hope this helps :)

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.

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).

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

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!

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:

3. When did the law become effective?

Answers

Answer:

which law?

Step-by-step explanation:

40% of (100-20 of 300) is equal to​

Answers

Answer:

-2360 is the calculated answer

i help to answer this problem

Answers

Answer:

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

5x+26=151

5x=125

x=25

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.

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:

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

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

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

Answers

Answer:

= 7/2

Step-by-step explanation:

p = 3.5

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.

Please help me out, What is the slope?

Answers

Answer:

-1/2

Step-by-step explanation:

Hope this helps!

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:

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.

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:

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

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

the fifth oneeee!!!!

Answers

Answer:

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

Step-by-step explanation:

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:

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

Help me with this one please

Answers

Answer:

?=78

Step-by-step explanation:

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