20 books are 20$ 30 books are 75$ and 40 books are 100$ WHAT IS THE ANSWER

Answers

Answer 1

assuming you're trying to find 50 books = $n

n = 160$


Related Questions

Factor the expression. 27x^15−64y^9

Answers

Answer:

(3x2 - 4y4) • (9x4 + 12x2y4 + 16y8

solve, x − 5y = 6 for x.

Answers

Answer:

Step-by-step explanation:

To solve for x you have to move the -5y to the other side of the equals sign.  Since the opposite of subtracting is adding, we will add 5y to both sides to get

x = 5y + 6

Answer:

the answer i got was x=5y+6

Step-by-step explanation:

mathwey

Round each decimal to the given place value 1.25 - rounded
to the nearest tenth:
2.784 - rounded to the nearest
hundredth:

help me

Answers

Answer:

see below

Step-by-step explanation:

1.25 rounded to the nearest tenth : 1.3

2.784 rounded to the nearest hundredth : 2.78

100 points! :) How do you find the equation of a line given two points? Please explain step-by-step!
So for example: Find the equation of the line containing the points (-2, 1) and (2,9).

Answers

Answer:

1,9

Step-by-step explanation:

Answer:

-2+4=2, 1+8=9

Hope I helped

The Equation of line u is y =-8/9x+5/4. The equation of line v is y =9/8x+7/4. Are line u and line v parallel or perpendicular?

Answers

Answer:

when two lines are parallel the two slopes are equal (m1 =m2)

when two lines are perpendicular the product of the slopes is equal to -1( m1m2= -1)

m1 =1st slope

m2= 2nd slope

using the formula y= mx +c

m1= -8/9

m2= 9/8

since m1 is not equal to m2 and -8/9 × 9/8 = -1

It is perpendicular

Step-by-step explanation:

PLS MARK BRAINLIEST

danielle walks 88 feet due east to the library from her house. from the library, she walks 187 feet northwest to the corner store. finally she walks approximately 139 feet from the corner store back home. does she live directly south of the corner sotre? justify your answser

Answers

Answer:

Step-by-step explanation:

Consider these four number lines of solutions. 4 number lines going from negative 5 to positive 5. Graph A: a point is at negative 4. Everything to the left of the point is shaded. Graph B: a point is at negative 4. Everything to the right of the point is shaded. Graph C: Points are at negative 4 and positive 4. Everything to the left of negative 4 and to the right of positive 4 is shaded. Graph D: points are at negative 4 and positive 4. Everything between the points is shaded. Which graph represents the solution to the inequality |k|StartAbsoluteValue k EndAbsoluteValue greater-than-or-equal-to 4? graph A graph B graph C graph D

Answers

Answer:

graph C

Step-by-step explanation:

you want to download some new songs on your mp3 player.Each song will use about 4.3MB of space.There is 7.8GB of free storage space on your mp3 player.At most how many songs can you download?

Answers

Answer:

1857

Step-by-step explanation:

7.8= 7987.2mb

4.3=0gb

A graphical device for depicting categorical data that have been summarized in a frequency distribution, relative frequency distribution, or percent frequency distribution is a:

Answers

The graphical device that divides data according to the percentage they represent is a pie-chart.

Frequency distribution, relative frequency distribution, or percent frequency distribution all are statistical measures that want to establish the part of the distribution corresponding to each measure, that is, percentages, thus they are represented by pie-charts.

An example, suppose that among 50 people sampled, 20 prefer the NBA and 30 the NFL.

Thus, 60% of the sample prefers the NFL, and 40% the NBA.This information is well represented by the pie-chart sketched at the end of this answer.

A similar problem is given at https://brainly.com/question/14354536

These spam comments are getting out of hand. They’re everywhere and it’s really annoying having to post another question because of those spam comments. Like who’s behind all of this? And for what reason are they doing this?

Answers

Answer:

I agree it's annoying!!!

Step-by-step explanation:

I think the people who just spam questions are just lazy and they have nothing else to do with their lives. So they try to make themselves feel better by annoying other people. I hope you are having a good day other than people spamming questions!

i know, it completely ruins the app!
people need help and others want to give help. some want both. so why do people want to step it and waste there time?!
so upsetting.

Solve for m < DEG = 32 and m < GEF = 29

Answers

Answer:

31udd65dd and the rest are all the way in which I

If the difference of a number and two is tripled, the result is six more than the number. Find the number. Round your answer to the nearest integer, if necessary.

Answers

Answer:

6

Step-by-step explanation:

let the number be x

(x-2)3=x+6

3x-6 = x+ 6

2x= 12

x= 6

HELP ME PLEASEEEEEEEE

Answers

Answer:

[tex]6^{9}[/tex]

Step-by-step explanation:

When multiplying exponents with the same base, add the exponents:

[tex]\frac{6^{10-4} }{6^{-5+2} }[/tex] = [tex]\frac{6^{6} }{6^{-3} }[/tex]

Then use the negative exponent rule

[tex]\frac{6^{6} }{6^{-3} }[/tex] = [tex]6^{6+3}[/tex] = [tex]6^{9}[/tex]

Volume of this prism

Answers

Answer:

188cm³

Step-by-step explanation:

For BRAINLY please help fast I have a D in the class haha

Answers

Answer:

yes

Step-by-step explanation:

it is possible to be an isoscelize triangle

pls mark brainliest

Answer:

I think yes

Step-by-step explanation:

because the two sides that are bigger can be the ones with the lenght of 8

and the one in the bottom can be the one with the lenght 1

hope this helps <33

have a nice day :)

what is the rule for the reflection

Answers

Answer:

w

Step-by-step explanation:

er

simplify 5 to the power of three over 5 to the power of seven

Answers

Answer:

1/625, or 0.0016 is the answer.

15 friends sold the same number of tickets each. They sold x tickets altogether. How many tickets did each of them sell?

Answers

Answer:

hhgfghgffgtfhhjjjjhhfsadsdffbnjghdrr

Answer:

Hey man im not very smart

Step-by-step explanation:

Please help! I'll mark Brainliest.

I just need to know what G and F are! Or how to find them? I'm being timed!

Answers

Answer:

G and F are the lines I guess? You have to use them to answer the rest of the questions.

Could someone please help answer this, will give brainliest, please no spam, thank you (homework help)!

Answers

Answer:

Step-by-step explanation:

Need help with math:/!!!!

MN is 6 units. Find the lengths of NZ and XZ.

For the image see if you have enough info to find the missing lengths. If not, explain why.

Answers

Answer:

Step-by-step explanation:

[tex]\frac{3 +NZ}{3}[/tex] = [tex]\frac{5+5}{5}[/tex]  ⇒  NZ = 3

XZ = 6 × 2 = 12

The length of NZ = 3 units.

The length of XZ = 12 units

Triangle Proportionality TheoremWhat is Triangle Proportionality Theorem?

A line that runs perpendicular to one side of a triangle and crosses the other two sides equally splits the two sides.

Use of Triangle Proportionality Theorem to find the sides:

Step 1: Consider side NY, NZ, YM, MX

By the theorem,

[tex]\frac{YN}{NZ}=\frac{YM}{MX}[/tex]

[tex]\frac{3}{NZ}=\frac{5}{5}[/tex]

[tex]NZ=3[/tex] units

Step 2: Consider sides YM, YX, NM, ZX

[tex]\frac{YM}{YX} =\frac{NM}{ZX}[/tex]

[tex]\frac{5}{10} =\frac{6}{ZX}[/tex]

[tex]ZX = 12[/tex] units.

Therefore, the values for the sides are NZ = 3 units and XZ = 12 units.

To know more about more about similar triangles, here

https://brainly.com/question/21874653

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triangle abc is dilated with a scale factor of 1/3 label the angle measurements in triangle abc

Answers

Answer:

B=1 and the rest Im unsure of sorry hope this helps

Step-by-step explanation:

Reaserch how x ray technications use math in their careers

Answers

Answer:

X-ray technicians, also referred to as radiologic technologists, would need math skills to be able to use accurate calculations when mixing chemicals used in x-ray imaging processes. In addition to this, the critical and logical thinking abilities practiced in the study of mathematics are useful in the day to day job, especially because working with imaging technology and machines to get detailed images for physicians to view is crucial to patient care and treatment.

Education for an associate's degree in radiologic technology is going to be focused heavily on STEM related courses such as anatomy, radiation safety, imaging procedures, and pathology. For this reason, it is recommended that high school students planning on pursuing this educational path take plenty of classes in math, science, and technology.

Radiologic technology job opportunities are expected to increase by 9 percent between 2018 and 2028 according to the Bureau of Labor and Statistics. This is greater than the 5 percent average increase projected for all other jobs, which means radiological technology is a career with a strong and stable outlook.

Step-by-step explanation:

help meeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee

Answers

Answer:

16

Step-by-step explanation:

2x2x2x2= 16

What is the greatest common factor of 12 and 20?
A. 2
B. 3
C. 4
D. 6

Answers

Answer

C.4

Step-by-step explanation:

hope it helps:)

Answer:

c

Step-by-step explanation:

Use f(x) = 2x − 3 and g(x) = 4 − x2 to evaluate the expression.
(a) (f ∘ g)(x)
(b) (g ∘ f)(x)

Answers

The resulting expressions for [tex](f\,\circ\,g)(x)[/tex] and [tex](g\,\circ\,f)(x)[/tex] are [tex]5- 2\cdot x^{2}[/tex] and [tex]-4\cdot x^{2} + 12\cdot x -5[/tex], respectively.

A composition is a operation two functions in which the independent variable of the first function is substituted by the entire second function. In other words, we have the following expressions:

[tex](f\,\circ\,g) (x) = f(g(x))[/tex] (1)

[tex](g\,\circ \,f)(x) = g(f(x))[/tex] (2)

If we know that [tex]f(x) = 2\cdot x - 3[/tex] and [tex]g(x) = 4 - x^{2}[/tex], then we have the following compositions:

[tex](f\,\circ\, g) (x) = 2(4-x^{2})-3[/tex]

[tex](f\,\circ\,g)(x) = 5-2\cdot x^{2}[/tex]

[tex](g \circ f) (x) = 4 - (2\cdot x-3)^{2}[/tex]

[tex](g\,\circ f) (x) = -4\cdot x^{2} +12\cdot x -5[/tex]

The resulting expressions for [tex](f\,\circ\,g)(x)[/tex] and [tex](g\,\circ\,f)(x)[/tex] are [tex]5- 2\cdot x^{2}[/tex] and [tex]-4\cdot x^{2} + 12\cdot x -5[/tex], respectively.

We kindly invite to check this question on composition between functions: https://brainly.com/question/15070966

-12+x=8 properties of equality

Answers

-12+x=8 , value of X is 20

Answer:

x=20

Step-by-step explanation:

-12+x=8

Add 12 on both sides (-12 + 12 + x = 8 + 12)

which crosses out -12

and then you get x=20

Ronald wanted an allowance. his father gave him a choice of getting it on a weekly or on a daily basis. He said he would either pay him $1.25 a week or pay him in the following manner for a week: On Monday he would give him $0.01; On Tuesday $0.02; On Wednesday $0.04 and on through Sunday. What would you tell Ronald to do so he can get more allowance?

Answers

Step-by-step explanation:

Well the addition of ($0.01+$0.02+$0.04) would be $0.07

And he since he can get $1.25 a week if he chose the weekly option

Since $1.25>$0.07

I would tell Ronald to choose the weekly option for getting more allowance.

A student can solve 12 math problems in 45 minutes. How long will it take the student to complete 20 problems if all the problems take the same amount of time?

Answers

Answer:

75min or 1 hour 15min

Step-by-step explanation:

45/12 = 3.75min per problem

3.75 x 20 = 75min or 1 hour 15min

Consider the matrices


Show that multiplication of matrices is not commutative be determining the product matrices ST and TS. Enter your answer by filling in the boxes.

Answers

Answer:

Answer attached

Step-by-step explanation:

ST

3*-2 + 4*-4 = -22                3*0 + 4*5 = 20

-1*-2 + -2*-4 = 10                -1*0 + -2*5 = -10

try TS by yourself

the product of two given matrices is [tex]ST=\left[\begin{array}{cc}-22&20\\10&-10\end{array}\right][/tex] and [tex]TS=\left[\begin{array}{cc}-6&-8\\-17&-26\end{array}\right][/tex].

Given that,

[tex]S=\left[\begin{array}{cc}3&4\\-1&-2\end{array}\right][/tex] and [tex]T=\left[\begin{array}{cc}-2&0\\-4&5\end{array}\right][/tex]

What is the product of two matrix?

The product of two matrices A and B is defined if the number of columns of A is equal to the number of rows of B. If both A and B are square matrices of the same order, then both AB and BA are defined. If AB and BA are both defined, it is not necessary that AB = BA.

Now, [tex]ST=\left[\begin{array}{cc}3&4\\-1&-2\end{array}\right] \times \left[\begin{array}{cc}-2&0\\-4&5\end{array}\right][/tex]

[tex]ST=\left[\begin{array}{cc}(-6-16)&(0+20)\\(2+8)&(0-10)\end{array}\right][/tex]

[tex]ST=\left[\begin{array}{cc}-22&20\\10&-10\end{array}\right][/tex]

[tex]TS= \left[\begin{array}{cc}-2&0\\-4&5\end{array}\right]\times \left[\begin{array}{cc}3&4\\-1&-2\end{array}\right][/tex]

[tex]TS=\left[\begin{array}{cc}(-6-0)&(-8-0)\\(-12-5)&(-16-10)\end{array}\right][/tex]

[tex]TS=\left[\begin{array}{cc}-6&-8\\-17&-26\end{array}\right][/tex]

Therefore, the product of two given matrices is [tex]ST=\left[\begin{array}{cc}-22&20\\10&-10\end{array}\right][/tex] and [tex]TS=\left[\begin{array}{cc}-6&-8\\-17&-26\end{array}\right][/tex].

To learn more about the product of matrices visit:

https://brainly.com/question/24810141.

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