Mathematics Middle School

The cost at a store for a package of pens is $3 and for a three-ring binder
is $4. Write a variable expression for the cost of buying p packages of
pens and b binders. How much would 3 packages of pens and 8 binders
cost?

Answers

Answer 1
3 Packages of pens and 8 binders would cost $41
Answer 2

Hey there! I'm happy to help!

Our question tells us that the number of packages is p and that the number of binders is b.

Each package is $3, so for every p we have, we will have 3 more dollars. So we have 3×p, which is written as 3p.

The same goes for binders. For every binder, we have 4 more dollars, so we have 4×b which is just written as 4b.

An expression is just a number sentence without an equal sign, so something like 1+1 or 7x². The variables are just the letters or symbols that represent an unknown quantity (so 7x² is a variable expression).

Our total cost is going to be the cost of our packages and our binders, so we combine the 3p and 4b we previously came up with, so our expression is 3p+4b.

Now, we can plug in our amounts of each thing into the equation. We will insert our 3 packages in plae of the p and our 8 binders in place of the b to find our cost.

In algebra, you can also write multiplication as a number outside of a number in parentheses so 4(2)=8 for example.

3(3)+4(8)

9+32

41

So, the total cost is $41.

Have a wonderful day and keep on learning! :D

Related Questions

There is 2 questions in this picture

Answers

Answer:

D. [tex]\frac{2}{5}[/tex]

C. 37.5

Step-by-step explanation:

29: Divide 2 by 5.

30: Just divide.

I hope this helps!  

pls ❤ and mark brainliest pls!

the answer for the first one is 2/5 and the second one is 37.5

I need help on this question.

Answers

Answer:

answer for your question is 2) 5 and 7

Actually I took this test and the answers number three between the seven and eight

Please help! Greatly appreciated. Thank you!

Answers

The answer is the last one. (7,-2) (-3,6)

When you reflect a point across the x-axis, the x-coordinate remains the same, but the y-coordinate is taken to be the additive inverse. The reflection of point (x, y) across the x-axis is (x, -y).

Answer: Q(7,-2), S(-3,6)

Step-by-step explanation:

I have a question that says: Sound is used to measure ocean depth. Sound travels 1.5 km per second through water. If it takes 3.7 seconds for a sound to reach the bottom of the ocean, how deep is the water? It is not that I can't solve the problem, I don't know the problem is asking. The only thing I know is that it multiplication. Please help me.

Answers

Hey there!

All you need to do to answer this question is to do 3.7 x 1.5 = 5.55 km. I hope this helps you out. Have a good day :).

You will need to multiply 3.7 1.5, then there’s your answer hope this helped!

To find the average of a student’s test scores, add the scores and divide by the number of tests. Suppose Ryan scored 85, 92, 88, and 98 on four tests. Write a numerical expression to describe Ryan’s average test score.

Answers

x= (85+92+88+98)/4
The slash means to divide. So you’re making a fraction with all the scores on top and the number of scores on the bottom.

Answer:

(85+92+88+98)/4

Step-by-step explanation:

No equal sign because it is a numerical expression.

Find the number that makes the ratio equivalent to 3:2.
:24

Answers

Answer:

36:24

Step-by-step explanation:

24 divided by 2 which is 12 then 12x3 which is 36

I might be wrong but i think this is the answer.

Answer:  36 : 24

Step-by-step explanation:

3 / 2 = 12 * 3 / 12 * 2

= 36 / 24

= 36 : 24

Hope it helps !!

PLEASSEEE HELPPPPPPPPP I WILL GIVE BRAINLIEST

Answers

Answer:

The answer's below :)

Hope this helps <3

I WILL MARK AS BRAINLIEST! Graph each coordinate pair on the graph and then indicate which quadrant or axis the point lies on.

Answers

Step-by-step explanation:

in order of the chart they are in axis number:

3

3

2

2

4

1

4

3

I would say (2,-6) hope this helps

Please get right and do quick

Answers

Answer:

h = S/(2 π r) - r

Step-by-step explanation:

Solve for h:

S = 2 π r (r + h)

S = 2 π r (r + h) is equivalent to 2 π r (r + h) = S:

2 π r (r + h) = S

Divide both sides by 2 π r:

r + h = S/(2 π r)

Subtract r from both sides:

Answer: h = S/(2 π r) - r

Answer:

h=s/(2 π r) -r

Step-by-step explanation:

Helppp me pleaseeeee

Answers

Answer:

485 × [tex]10^{-10}[/tex]

Step-by-step explanation:

first we need to convert the number to fraction

0.0000000485

[tex]\frac{0.0000000485}{10000000000}[/tex]

it will be

[tex]\frac{485}{10000000000}[/tex]

or can be written as

[tex]\frac{485}{10^{10} }[/tex]

now we need to convert it to scientific notation

485 × [tex]10^{-10}[/tex]

All you have to do is multiple your answer to find the prouduct

Find all the angles in each of the following triangles (image
attached)

Answers

Answer:

1.

solution :

x+2x+2x=180degree(sum of angle of triangle )

5x=180degree

x=180/5

x=36

therefore, x= 36

2x=2*36

=72#

The answer is 72.

Hope that this helped!

please help, thank u :)

Answers

Answer:

answer is 4√10x^2

Step-by-step explanation:

4√10x^2

The Answer Is 4√10x^2

how do you rewrite 2^-2

Answers

Answer:

[tex]2 ^{ - 2} \\ \frac{1}{2 ^{2} } \\ ( \frac{1}{2} ) ^{2} [/tex]

I hope it helped U

stay safe stay happy

Answer:

1/2^2

Step-by-step explanation:

When you have a number to a negative power, you can rewrite it inverting it's fraction and changing the signal of the power. 2 can be wrote as a fraction like 2/1, so you have 2^-2, it's like 2^-2/1, so you invert the fraction and the signal of the power, and have 1/2^2

Can someone pls help thxs

Answers

□X

□X

□V

□V

□X

□V

the V ones are answers.
The third and fourth answer choice are the ones you should mark off.

Please help me on this question

Answers

Answer:

125 10/14

Step-by-step explanation:

the 125 doesn't actually matter so you can ignore that part.

since it is being divided by 14, the denominator of the fraction is 14. the remainder is 10, so the answer should be in the form of x 10/14, which the 1st answer is

I think 125.10 is the anwser because I believe that was the answer when I took this test two hours ago

Solve the inequalities by graphing. Identify the graph that shows the following equations.
x + y < 1
x − y > 2

Answers

Answer:

It's the 4th graph on the 1st sheet

Step-by-step explanation:

I hope this can help you

Please help me! Greatly appreciated

Answers

Answer: 18

Step-by-step explanation: -8,2 is 18 away from 10,2 because -8 is 18 away from 10

The answer is 18 I’m pretty sure. Hope this helps.

Please help me with this

Answers

64 you do length x width

The answer is 64. Length × Width

Solve the inequalities by graphing. Identify the graph that shows the following equations.
x + y > 3
x + y < 5

Answers

Answer:

x+%Y = 7

Step-by-step explanation:

&.x 1 +1223 +23888 +667x228833 .7%/11 =7

I hope this can help you

cole and rose are compairing their heights. cole is 7.1 meters tall. Rose is 20 centimeters shorter than cole
what is coles height

Answers

Answer:

150 meters is your answer hun.

Please help! Greatly appreciated

Answers

Answer:

(6, 6)

Step-by-step explanation:

    Point P is located at (6, -4). Point S is located 10 units above point P. This means we are going up on the y-axis. Going up 10 units from -4 puts point S at 6. Therefore, point S is located at (6, 6).

Answer
(6,6)

Hope this helps!!

A bookshop has some fiction and non books. 2/5 of the books are fiction books. Of these, 1/5 are mystery stories. 1/3 of the non fiction books are mystery stories too. What fraction of all the books in the shop are mystery books?

Answers

Answer:

1/3 of all of the books

Step-by-step explanation:

5/5 - (2/5 +1/5) =2/5

2/5(1/3) = 2/15 nonfiction mystery books

2/15 + 1/5 = mystery books

1/5 = 3/15

2/15 + 3/15 = 5/15

5/15 = 1/3

1/3 out of all the books

PLZZ HELPP!! Find the perimeter of the following polygon.

10 in
10 in
11 in
12 in

Answers

Answer:

43in

Step-by-step explanation:

Perimeter = sum of the sides

Perimeter = 11 + 10 + 10 + 12 = 43

Answer:

p = 43

Step-by-step explanation:

Perimeter = all side lengths added

Perimeter = 10 + 10 + 11 + 12

Perimeter = 43

I WILL MARK AS BRAINLIEST! Write an Equation that represents the points in the table

Answers

Answer:

y = 3x + 5

Step-by-step explanation:

Based on the table, as x increases by 1, y increases by 3. Moreover, when x = 0, y = 5. Therefore, the slope is 3 and the y-intercept is (0, 5).

Substitute the information for the variables in the slope-intercept form equation.

y = mx + b

m = slopeb = y-intercept value

Answer:

y=3x +5

Step-by-step explanation:

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

Translate into a phrase 2x+9

Answers

Step-by-step explanation:

2x is added with 9

OR

sum of 2x and 9.

two times a number added to 9
or
the sum of two times a number and 9

Does the expression 30 + (-23) represent the temperature at night?

Answers

It could, but it would be very cold.
that seems like its very cold.

Please can you answer these Alegbra questions.
30 POINTS ON THE LINE AND BRAINLIEST
(Please answer in step by step)

Answers

A. Put these answers into your table :
5, 6.20, 7.40, 8.60, 9.80

B see pic

c yes there is a linear relationship between the letters and cost

D the equation is y=.60x+5
D = 60x+y
Hope it’s right dunno bout others T-T

Write 5/8 as a percent
A. 0.625
B. 62.5
C. 625%
D. 6.25

Answers

Question:- Write ⅝ as a percent

Answer:-

[tex] \frac{5}{8} [/tex]

For making it in percentage we need to multiple the fraction with 100

[tex] \frac{5}{8} \times 100\% \\ \frac{5}{ \cancel{8} {}^{ \: \: \: 2} } \times \cancel{100} {}^{ \: \: \: 25} \\ \frac{5 \times 25}{2} [/tex]

Now we will multiple and divide the above equation with 5 for easy solution. Or you can just divide the equation upto decimal for your answer

[tex] \frac{125}{2} \times \frac{5}{5} \\ \frac{625}{10} \\ 62.5 \: \% \: \: ans[/tex]

So your options (B) 62.5% is correct

Answer: 62.5%
Please mark brainliest

I need help someone help me please I guess

Answers

Answer:

C. -4 degrees celsius

Step-by-step explanation:

Answer:

-4 degrees celsius

Step-by-step explanation:

you can see that there are 5 tiny lines between 0 and -10 so that must mean that 10 divided by 5 = 2. so each gap is equal to 2 degrees celsius. that means that the red liquid is upto the -4 point

I WILL MARK BRAINLIEST! Graph each coordinate pair on the graph and then indicate which quadrant or axis the point lies on.

Answers

Answer:

Shown in order of table.

quadrant 3

quadrant 3

quadrant 2

quadrant 2  

quadrant 4  

quadrant 1  

quadrant 4  

quadrant 3

Step-by-step explanation:

The quadrants left to right on an x and y standard form graph are

quadrant 2 , then quadrant 1

quadrant 3   then quadrant 4

On an xyz graph they do not change the z line becomes y line and diagonal acending axes becomes y in example.

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