Mathematics High School


A used book store also started selling used CDs and DVDs. In the first week, the store sold 40 used CDs and DVDs, at
$6.00 per CD and $4.00 per DVD. The sales for both CDs and DVDs totaled $180.00. Write a system of equations to
represent this situation

Answers

Answer 1

Answer:

6c + 4d = 180

c + d = 40

c represents the CDs and d represents the DVDs.

Related Questions

Decide whether 2 x + 8 and 2(× + 4) + 4 are equivalent expression. explain how you know.​

Answers

Answer:

They are not equivalent

Step-by-step explanation:

2(x+4)+4

First you distribute the 2.

2x+8+4

Then combine like terms

2x+12

Therefore they are not equivalent

Find the simplified product where x>=0

Answers

Answer:

The last one

Step-by-step explanation:

in the second part, x2 could to pull out as x

Answer:

D

Step-by-step explanation:

took it on edge.

Which figure has rotational symmetry but no line symmetry?
A) Figure 1
B) Figure 2
C) Figure 3
D) Figure 4​

Answers

Answer:

In my opinion i would think A but it might be P also, sorry im not sure but thats my best guess.

Step-by-step explanation:

Figure 4 has rotational symmetry but no line symmetry.

Option D is correct.

Symmetry :

The rotational symmetry of a shape explains that when an object is rotated on its own axis, the shape of the object looks the same.

Some of the examples are square, circle, hexagon.A line of symmetry is a line that cuts a shape exactly in half. It means that if we fold the shape along the line, both halves would match exactly.

From given figure, It is observed that figure 4 has rotational symmetry but no line symmetry.

Learn more about the rotational symmetry here:

https://brainly.com/question/15178808

The probability of rolling a number cube and getting a 6 and 3.

Answers

We have to find out the probability of getting 6 and 3,

Since this only one roll it is not possible to get 2 numbers in one roll

So, I will presume you want the probability of getting 6 or 3,

Total number of outcomes= {1,2,3,4,5,6} = 6 outcomes

Number of favorable outcomes = {3,6} = 2 outcomes

Probability of rolling 6 or 3 = [tex]\frac{Number'of 'favorable' outcomes}{Total' number 'of' outcomes}[/tex]

= 2/6

= 1/3 or 0.33333%

Therefore the probability of rolling 6 or 3 is one in three chances

Happy to help :)

If u have any doubts or questions , feel free to ask

properties of parallelograms worksheet answers milliken publishing company mp3497 page 24

Answers

Answer:

what?

Step-by-step explanation:

Answer: you need to show the worksheet so we can help

Step-by-step explanation:

NEED HELP ASAP PLEASE AND THANK YOU!!!

Answers

Step-by-step explanation:

10²+11²

=100+121

=221

=√221

=14.87

The figure shows the measurements, in inches, of a rectangular prism. A rectangular prism has a height of 8 inches, length of 7 inches and a width of 7 inches. What is the volume of the prism? A. 92 cubic inches B. 236 cubic inches C. 472 cubic inches D. 672 cubic inches

Answers

I think that it is B

Answer:D 672

Step-by-step explanation: (12 x 8)x 7=672

Calculate the area of the triangle.
State the units of your answer.
6 cm
6 cm​

Answers

Answer:

18 cm

Step-by-step explanation:

I hope i'm correct..

So first the formula of finding the area of a triangle is

A= 1/2 (b) (h)

If we turn the triangle we can do that.

so,

A=1/2 (6)(6)

A=1/2(36)

1/2 of 36 is 18

So, the answer is 18 cm

Answer:

18 Cm

Step-by-step explanation:

[tex]A = \frac{ab}{2}[/tex]

Area = 6 times 6 over 2

Find the GCF of 5y5 and 50y2.

Answers

Answer: [tex]5y^2[/tex]

Step-by-step explanation:

Given

[tex]5y^5\ \text{and}\ 50y^2[/tex]

GCF or HCF of the two is the highest common factor

[tex]\Rightarrow 5y^5=5\times y^2\times y^3\\\Rightarrow 50y^2=5\times y^2\times 10[/tex]

It is clear GCF is [tex]5y^2[/tex]

PLEASE HELP URGENT WILL GIVE BRAINLIEST!! What is the following sum? Assume x > 0 and y > 0 sqrt x^2y^2+2 sqrt x^3y^4+xy sqrt y

Answers

Answer:

Second Option

Step-by-step explanation:


the tasty Deli uses 6.5 lb of ham each day how many ounces of ham will be used in 3 w
eeks ​

Answers

136.5 lbs
There’s 16 ounces in a pound
135.5 • 16
Answer is 2,184 ounces of ham will be used in 3 weeks

Answer:  2184

Step-by-step explanation:

1lb = 16oz

6.5lb (16oz/1lb) = 104 oz

which means its 104 oz of ham uses in each day.

7 days in a week, then  3 weeks means 3 x 7 = 21 days

104oz in a day, 21 days (3 weeks) equals 21 x 104 = 2184 oz

Use the order of operations to simplify
3^2 + 2^2

Answers

3^2=9 and 2^2= 4 and 9+4=13

One half the square of a number is less than a second number. The sum of 3 and the opposite of the second number is greater than the square of the first number. Which graph represents the solution set?​

Answers

Answer: D

Step-by-step explanation:

decrease
133 in the ratio 7:2​

Answers

Answer:

38

Step-by-step explanation

2/7× 133=38

Find the perimeter of the rectangle

Answers

Answer:

86 inches

Step-by-step explanation:

16+16+27+27=

Answer:

the perimeter equals 86 ft

Step-by-step explanation:

perimeter = l + w + l + w or 2(l + w)

2(27 + 16)

27 + 16 = 43

43 * 2 = 86

What is the quotient of 4,510 - 22 ?

Answers

Answer:

The answer is 99,220!!

Step-by-step explanation:

Did you mean to type quotient?

Solve for X in the Diagram.
Brainliest for the first Correct answer :)
(Sorry for all the questions)

Answers

60 + 80 + 48 + x = 180
188 + x = 180
x = -8
the answer is A

1. a+b+c+d
2. -a+b-c+d
3. ab+cb
4. ab-bc
5. ba+da

Answers

Answer:

1 a+b+c+d

=(ab + c+ d)

=ab+ a+c+ a+d

What is the volume of the prism, to the nearest cubic inch?

Answers

the volume of the prism is 16

through: (9,-5), Slope=3/4 what is the slope equation?​

Answers

9=3/4x+-5 is the answer I believe

The area of a gymnasium is (27x + 18) square units. Factor
27x + 18 to find possible dimensions of the gymnasium.

Answers

Answer:

9 by (3x + 2) units

Step-by-step explanation:

Note that 9 is a factor of both 27x and 18.  Therefore,

27x + 18 factors into 9(3x + 2).

Possible dimensions of the gym are 9 by (3x + 2) units.

Erica can run 1/6 of a kilometer in a minute. Her school is 3/4 a kilometer away from her home.

At this speed, how long would it take Erica to run home from school?

Answers

Answer: 4.5 Minutes / 4 Minutes and 30 Seconds.

Step-by-step explanation:

N/A

Marcus mows lawns for his summer job. He earns $15 per lawn. If he earned $75 dollars during the week, how many lawns did he mow? Pls answer the question.

Answers

the answer is going to be 5

can someone please help me with this ​

Answers

Step-by-step explanation:

Diameter = 2r

= 7.7 = 2r

7.7/2 = r

3.85=r

The table shows a proportional relationship between the number of notebooks and the price:



Number of Notebooks Price (in dollars)
2 12
3 18
4
5 30
What price should 4 notebooks cost?

Group of answer choices

$6

$24

$22

$10

Answers

$24, they have a pattern of x6

q⋅(a+y)=67y+93
what is the answer?

Answers

Check below for what’s a and what’s y

Please help, round to the nearest thousandth

Answers

Answer:

75.398

Step-by-step explanation:

Please help with range

Answers

Answer:

i think the one u have is right

Step-by-step explanation:

range is the smallest number to the largest, so the last one is right. hope this helps!

24=×+7 ayudenme por favor :) ​

Answers

Answer:

24 -7 = x+7-7

17 = x

x = 17

so the solution set of

x is x = 17

⚠️Attention ⚠️HELPPPPPP!!!!!

Answers

Answer:

it would be B.

Step-by-step explanation:

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