Lamar ordered some books online for 6$ each. He paid a total of 3$ for shipping. The total cost of the purchase was 75$ . How many books did he buy?

Answers

Answer 1

Answer:

He bought 12 books.

Step-by-step explanation:

Here is your equation: 6 b+3=75

Step 1- Subtract 3 from both sides: 6 b+3-3=75-3

6 b=72

Step 2- Divide by 6: 6 b/6=72/6

b = 12 books in total.


Related Questions

. Two angles whose measures equal 90 degrees

Answers

what are you trying to ask?

Find the value of d so the line that passes through (a,b) and (c,d) has a slope of 12.

Answers

Answer:

d = 12c-12a+b

Step-by-step explanation:

The formula for calculating the slope of a line passing through two points (x1, y1) and (x2, y2)is expressed as:

m = y2-y1/x2-x1

Given the coordinates  (a,b) and (c,d) and slope m = 12

Substitute into the formula as shown:

m = d-b/c-a

12 = d-b/c-a

Make d the subject of the formula:

12 = d-b/c-a

cross multiply

12(c-a) = d-b

12c-12a = d-b

add b to both sides

12c-12a + b = d-b+b

12c-12a + b = d

Hence d = 12c-12a+b

The measure of angle MBT ?

Answers

Answer:

Oooo I’m doing a question just like that one on my hw

Step-by-step explanation:

Use the following federal tax table for biweekly gross earnings of a single person to help answer the question below.
A 9-column table with 7 rows is shown. Column 1 is labeled If the wages are at least with entries 720, 740, 760, 780, 800, 820, 840. Column 2 is labeled But less than with entries 740, 760, 780, 800, 820, 840, 860. Column 3 is labeled And the number of withholding allowances is 0, the amount of income tax withheld is, with entries 80, 83, 86, 89, 92, 95, 98. Column 4 is labeled And the number of withholding allowances is 1, the amount of income tax withheld is, with entries 62, 65, 68, 71, 74, 77, 80. Column 5 is labeled And the number of withholding allowances is 2, the amount of income tax withheld is, with entries 44, 47, 50, 53, 56, 59, 62. Column 6 is labeled And the number of withholding allowances is 3, the amount of income tax withheld is, with entries 26, 28, 31, 34, 37, 40, 43. Column 7 is labeled And the number of withholding allowances is 4, the amount of income tax withheld is, with entries 14, 16, 18, 20, 22, 24, 26. Column 8 is labeled And the number of withholding allowances is 5, the amount of income tax withheld is, with entries 1, 3, 5, 7, 9, 11, 13. Column 9 is labeled And the number of withholding allowances is 6, the amount of income tax withheld is, with entries 0, 0, 0, 0, 0, 0, 1.
Molly has biweekly gross earnings of $839.52. By claiming 1 more withholding allowance, Molly would have $16 more in her take home pay. How many withholding allowances does Molly currently claim?
a.
1
b.
2
c.
3
d.
4



Please select the best answer from the choices provided


A
B
C
D

Answers

Answer:

Hi! The answer is actually C. 3

Step-by-step explanation:

I just did the practice and it said 3 was the answer:)

Based on the number of exemptions claimed by Selina and her biweekly gross pay, her state tax will be $16.80.

Here, we have,

given that,

from the given information, we get,

Selina is to pay 21% of her federal taxes.

Seeing as she claims a single exemption and falls in the $840 to $860 bracket, the table shows that her federal tax contribution would be $80.

State taxes are therefore:

= 80 x 21%

= $16.80

Find out more on tax at

brainly.com/question/11308445.

#SPJ7

A system is described by the equations
2x + 3y = 10
4x + By = 20
For what value of B will the system have infinitely many solutions?

Answers

I got x=5/2 hope this helps:)

POSSIBLE POINTS: 0.86 Marcus is trying to decide between a cable subscription and a satellite dish. The cable subscription has a $40 setup fee and costs an additional $38 per month. Marcus has $500 budgeted for cable. How many months (m) can he pay for the cable subscription? WRITE AN EQUATION THAT CAN BE USED TO FIND THE NUMBER OF MONTHS HE CAN PAY FOR THE CABLE SUBSCRIPTION​

Answers

Answer:

0.156

Step-by-step explanation:

step1. add 40 + 38 = 78

step2. divide 78 by 500 to get 0.156

hope im right

A winter jacket cost $200. It is on sale for 30% off when you have a coupon to save another 20%. How much do you have to pay for the jacket before taxes

Answers

Answer:

$100

Step-by-step explanation:

20%+30% = 50% off

50/100 = 1/2

200*1/2 = $100

Please answer. Which is the graph of the solutions.

Answers

Answer:

x < -8, third from top option in the picture.

Step-by-step explanation:

5(2x - 4) < -100

10x - 20 < -100

10x < -80

x < -8

Answer:

3rd option from the top (open circle arrow going left)

Step-by-step explanation:

5(2x-4) is less than - 100

5 times 2x is 10x and 5 times - 4 is - 20 so,

10x - 20 is less than - 100

now do inverse operations to isolate x, add 20

- 20 plus 20 is 0 and -100 plus 20 is - 80

10x is less than -80

divide both sides by 10 and you get,

x is less than - 8

An angle measures 40 more than the measure of its supplementary angle. What is the measure of each angle

Answers

Sum of two angles that are supplementary = 180°

Let the first angle be x .

Then the other angle = x + 40

Measure of each angle =

[tex]x + x + 40 = 180[/tex]

[tex]2x + 40 = 180[/tex]

[tex]2x = 180 - 40[/tex]

[tex]2x = 140°[/tex]

[tex]x = \frac{140}{2} [/tex]

[tex]x = 70°[/tex]

Which means :-

The first angle:-

[tex]= x = 70°[/tex]

The second angle :-

[tex]x + 40[/tex]

[tex]70 + 40[/tex]

[tex] = 110°[/tex]

Therefore , the two supplementary angles are 70° and 110° .

Answer:

65 and 25

Step-by-step explanation:

Alisa bought 3 shirts for $29 each and then spent $15 on lunch. She has $31 left. How much money did she have before?

Answers

Answer:

$133

Step-by-step explanation:

Can someone help me please?

Answers

Answer:

Instead of shane just taking all the exponents and counting them one by one, she could have added all the exponents because that's what you're supposed to do when multiplying exponents.

y + 7 = 4(x + 2)
Write in standard form.

Answers

This you answer for sure
4x-y=-1 that’s your answer

HELP ASAP! PLEASE!

What relationship between the population of Ohio and the number of years displayed in the scatter plot

Answers

Answer:

The number line has to be shown in a picture if you want more specific instructions from others.

Step-by-step explanation:

Show a picture

PLS HELP ILL GIVE U POINTS :)

Explain how you know the following system of equations has at most 2 solutions.
Solve the system algebraically. Show your work.
Solve the system by graphing.


y= 2x-1
y= x^2-9

Answers

Answer:

Step-by-step explanation:

Answer:

The said explanation is the answer.

Step-by-step explanation:

1) Graphing the first function (y = 2x-1). When the exponents of the variables are all 1, that is there are no square, cubes, etc. the equation is a line. Then it is enough to find two points to draw it. We can calculate two points assigning a number to x and calculating the corresponding number for y. For example, when x= 0 y= 2 times 0 -1 = -1. Then the line will pass from the point (0,-1). We need a second point, we can take x=1, then y = 2 times 1 -1 = 1. The line will pass from (1,1). We can mark the two points on the plane and draw the line from these two points.  

2) Graphing the second function (y = x^2-9). A quadratic equation is of the form: ax^2+bx+c= 0. We have: y= f(x) -9. Set y=0. We have the quadratic equation: x^2-9=0. Using the algebraic identity: a^2-b^2=(a+b)(a-b). We can rewrite x^2-9=0 as x^2-3^2=0: [(x+3)(x-3)=0] - [(x+3)=0,(x-3)=0] - [x= -3, x= 3]. Hence, there are two solutions for x. So we have two x-intercepts: (-3,0) and (3,0). To find the y-intercept, set x=0: [(y = (0)^2-9=0)] - [(y=-9)]. Hence the y-intercept: (0,-9)

In conclusion, this system of equations at most has two real solutions, since two points of both functions intersect each other.

Here's the graph:

What is 330000 in standard to scientific notation?

Answers

Answer:

3.3*10^5

Step-by-step explanation:

Answer:

3.3 * 105

Step-by-step explanation:

Write the number between 1 and 9 and place decimal accordingly. So, the answer is 3.3 multiplied by 10 raised to power 5.

Use the protractor to find the degree measure of the angle.
Make sure to write your answer with the degree sign.

Answers

Answer:

the angle is 136*

Step-by-step explanation: hope this heled pls mark braineist

(2x3)7x4)8x1)
I will makr brainliest if you get it right !!

Answers

Answer: 1344?

Step-by-step explanation:

Answer:

1344

Step-by-step explanation:

hope this helps

can anyone help with this please? 20 points for it

Answers

Answer:

9

Step-by-step explanation:

3^2 = 9

Here are the correct answers for these questions below
A = 028
B = 210

Answers

Umm...... Okay then..?

if m<2=44, what is m<1?​

Answers

Answer:

Step-by-step explanations:

Ok serous question this has nothing to do with my other questions would you guys care if I committed ya know

Answers

Answer:

I don't know you but I care. I am always here to talk. For real I don't have a life. Lol

Step-by-step explanation:

Yes we would care, and please don’t do it. I know life right now is not that great, but don’t do it. Your family is going to be sad, and they are going to be going through a lot of pain. Plus life of amazing and we need to cherish every moment we have left.

solve for U

32=2u

Simplify your answer as much as possible.

Answers

Answer:

16

Step-by-step explanation:

32 divided by 2 equals 16 so u = 16

U=16
You do 32/2 to get U, 32/2=16 so that would be your U.

Hope this helps!

An irregularly shaped stone was lowered into a graduated cylinder holding a volume of water equal to 2 ml. The height of the water rose to 7 ml. If the mass of the stone was 25 g, what was its density?

Answers

Answer:

Step-by-step explanationNote:

1

ml

=

1

cc

If the water rose

7

ml

2

ml

=

5

ml

then the stone had a volume of

5

ml

or

5

cc

With a mass of

25

g

it must have a density of

XXX

25

g

5

cc

=

5

g/cc

A student organization sells shirts to raise money for events and activities. The shirts are printed with the organization's logo and the total costs are $100 plus $7 for each shirt, x. The students sell the shirts for $15 each.


Write an expression for the cost AND an expression for the revenue (money earned). Then evaluate for the specified number of shirts.




Solution

Write the expression in the order of the problem.


Cost Expression: Answer

(View hint)


Revenue (Money Earned) Expression: Answer

(View hint)


How much would it cost to make 25 shirts?


$ Answer


How much would students earn if they sold 25 shirts?


$ Answer


Will students make more money than they spent if they make and sell exactly 25 shirts?

Answers

Answer:

The answer is below

Step-by-step explanation:

The total cost for producing x number of shirts = 100 + 7x

The price of each shirt is $15, therefore:

Revenue = price per shirt × number of shirts = 15 × x = 15x

Revenue = 15x

The cost of making 25 shirts is given as:

Cost = 100 + 7x = 100 + 7(25) = $275

The money earned from producing 25 shirts is given as:

Revenue = 15x = 15(25) = $375

Since the revenue is greater than cost, the students would make more money than they spent if they make and sell exactly 25 shirts

another way to write 2 5/2×4

Answers

Answer:

4 1/2(4)

Step-by-step explanation:

djjdiebjeidjjexjjebej

How much force is needed to push a car with 1,300 kg of mass at an acceleration of 1.5 m/s2?

C)16,562 N
A)8,493 N
B)1,950 N

Answers

Answer:

I think its C

hope this helps you

Which value is a perfect square root?
O 12
O 24
O 49
O 63

Answers

49 comes out as a perfect square root

Answer:

It's 49

Step-by-step explanation:

Rachel finished a meal at a diner and received a bill for $10.99. She charged the bill along with a 15 percent gratuity to her credit card. What is the total amount she charged to her credit card? Round to the nearest cent if necessary. A.) $11.14. B.) 12.54 C.) 13.19 D.) 13.73

Answers

Answer:

B 12.54

Step-by-step explanation:

10.99 times 0.15 equals 1.55

10.99 + 1.55 = 12.54

Answer:

$10.99 + 15% = $12.63

Step-by-step explanation:

A figure is located entirely in the third quadrant. If it is reflected over the y-axis, what will the signs of the coordinates be?

Answers

Answer:

Step-by-step explanation:

Hello friend!!!

The signs of the coordinates will be ( - , - )

This is because it is located in the third quadrant and the coordinates of any point on the third quadrant are ( - , - )

Hope this helps

plz mark as brainliest!!!!!!!

The signs of the coordinates should be ( - , - )

Signing of the coordinates:

Since we know that there are 4 quadrants. In 1st quadrant, the sign is (+,+). In the 2nd quadrant, the sign is (-,+). The 3rd quadrant, the sign is (-,-), And, the fourth quadrant, the sign is (+,-),

So based on this, the above sign should be considered.

learn more about coordinates here: https://brainly.com/question/13596846

PLZPLZPZLZPZLZPZLZPZPPPZZLZP HELP ME WILL NAME BRINLY
Suppose J is between H and K. Use the Segment Addition Postulate to solve for x. Then find the length of each segment.
If HJ=x+10
JK=9x
KH=14x−58
a) Draw a sketch of the segments described above
b) Write an equaation using the segment addition postulate that will help you solve the problem
____+_____=____
c) combine like terms ( x terms on one side of the equal sign and numbers in the other side of the equal sign) _____=______
d)
x= __
HJ=__
JK=__
HK=__

Answers

Answer:

x= 17

HJ= 27

JK= 153

HK= 180

Step-by-step explanation:

If HJ=x+10

JK=9x

KH=14x−58

a) Draw a sketch of the segments described above

Find attached to this answer the diagram of the sketch of the segments described above

b) Write an equation using the segment addition postulate that will help you solve the problem

HJ + JK = KH

x + 10 + 9x = 14x - 58

c) combine like terms ( x terms on one side of the equal sign and numbers in the other side of the equal sign) x + 10 x + 10 + 9x = 14x - 58

10 + 58 = 14x - x -9x

68 = 14x - 10x

68 = 4x

x = 68/4

x  = 17

d)

x= 17

HJ= x + 10

= 17 + 10

= 27

JK= 9x

= 9 × 17

= 153

HK=14x −58

HK = 14 × 17 - 58

= 238 - 58

= 180

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