Mathematics College

The cost of 11 dvds and 7 cds is 172.50 and the cost of 10 dvds and 7 cds is 155.80. How much does a cd and dvd cost?

Answers

Answer 1

Answer:

The question has a mistake

Step-by-step explanation:

11d+7c= 172.5

10d+7c= 155.8

By subtraction;

1d+ 0c = 16.7

1d = 16.7

11×16.7+7c=172.5

7c = 172.5-11*16.7

You will get a negative answer yet the cost cannot be negative.

Related Questions

Adding (4-7i)+(-11+9i)​

Answers

your answer is -7+16i, because 4-11=-7 and 7i+9i is 16i

Cos B- CosC/CosA+1=c-b/a​

Answers

Answer:

Sorry can't help you but good luck

not sure if i did this right, but here is what i did

cosB-cosC/cosA+1 ≠ c-b/a

again im not sure!

On Sunday, a local hamburger shop sold a combined total of 252 hamburgers and cheeseburgers. The number of cheeseburgers sold was two times the number of hamburgers sold. How many hamburgers were sold on Sunday?

Answers

Answer:

84 Hamburgers

Step-by-step explanation:

Hamburger = x

Cheeseburger = 2x

x+2x = 252

252/3 = x

x = 84

Hope this helps! (:


Mrs. Garcia is painting a portion of her wall as shown.

What is the area of the wall she will paint?

If one quart of paint covers 25 square feet, how many
quarts will she need to buy? [paint x area]

Answers

Answer:

Step-by-step explanation:

Which choice is equivalent to the quotient shown here when x > 0?
(√42x^5)/(√6x^3)

Answers

Answer: x √7

Step-by-step explanation: A.P.E.X

Answer to your question is x√7 :)

please help, I’ll give brainliest to first answer.

Answers

x=60° because if 150°=90°+60° so a line is 180° consequently

90°+30°+x=180°

120°+x°= 180°

x°= 180°-120°= 60°

Ziv's taxicab ride cost $33. He left a 15% tip.
What was the total cost of the taxicab ride with tip?

Enter your answer in the box.

Answers

Answer:

Step-by-step explanation:

1. Find 15% of $33 to find the tip.

Find 1%  of $33 (move the decimal over 2 places to the left.        $0.33

2. Multiply the 1% tip by 15%

       33 * 15 =  $4.95  

3. Add $33 and $4.95

          4.95 + 33.00 = $37.95 total

 

Rewrite each of the following as equivalent expressions without the use of negative or zero exponents
Remember your order of operations

Answers

Answer:

Step-by-step explanation:

1/5³

1

1/2⁵

4

1

y⁴/x²

PLEASE HELP Mary has an essay due in 4 days. She estimates that she needs to spend 6 hours working on her essay. She wants to split up the work and work the same amount of time each day. Mary goes to bed at 10:00 p.m. and plans to work on her essay right before she goes to sleep. What time should Mary start working on her essay each night so she can complete her essay on time?
9:00 p.m.
8:00 p.m.
9:30 p.m.
8:30 p.m.

Answers

Answer:

8:30

Step-by-step explanation:

Because 6 ÷ 4 is 1.5. also know as 1.5hrs before bedtime.

Answer: I think the answer is 8:30

Step-by-step explanation:

6÷4= 1.5

8:30 + 1:30 = 10:00

HWLP GIVING OUT 40 POINTS.
Which of these statements are true. Have a nice day.

Answers

Answer:  you are giving out 20 points not 40 .-.

Step-by-step explanation:

Answer:

A & D ig??

Step-by-step explanation:

in not 100% sure

if im correct, thanks this helped you!.

This is the trial balance

Answers

Answer: 74.150 + 774.150=1,548.3

in Addition as for muliplcation it is 74.150 * 774.150

57,403.2225 which one were you asking for also I hope this helps out.

Cumulative Frequency (C.F)
a- The fraction or percentage of
observation below the upper
boundary of each successive
interval.
b- The absolute frequency divided
by the total number of observation.
C-Its obtained by adding relative
Frequency
d-b and c
e-a and c
f-all of the above.

Answers

Answer:

number 2 + 4i is one of the root to the quadratic equation x 2 + bx + c = 0, where b and c are real numbers. a) Find b and c b)

Step-by-step explanation:

can somebody help? :(

Answers

Answer:

What is the question??????????

Determine the equation of the line, written in slope-intercept form, that passes through the points (1,1)
and
(5,-1).

Answers

Answer:

y=-1/2x+3/2

Step-by-step explanation:

find the value of x, (x+6) 56 degrees

Answers

The answer is 28.
After transposing the integers to the other side of the equation: (x+6)+56=90
You get x as 28

Tanya wants to wrap the box
shown. The wrapping paper
costs $0.15 per square foot.
How much will the decorative
paper cost?
3 in
5 in
9 in
026 10

Answers

the answer is $26.10

cual es la altura del monton de libros situados en el cesped​

Answers

Answer:

depende de cuantos libros sean y cuanto tiene cada uno de los libros

Calculate the state income tax owed on a $90,000
per year salary.
tax = $[?]

Answers

Answer:

$4918

Step-by-step explanation:

first income must be divided according to tax bracket

2% tax on first 3000 income= 2% of $3000=$60

3% tax on income after first 3000 but upto 5000= 5000-3000= $2000

=3% of 2000= $60

5% tax on income after second 5000 but upto 12000= 17000-5000

=12000 5% of $12000= $600

Lastly, 5.75% income over 17000=

90000-17000= $73000 so, 5.75 % of 73000= $4197.5

tax= $60+60+600+4197.5

= $4917.5

= $4918

In the figure below, mZ1 = 105º. Find the measures of remaining angles.
I really need hell

Answers

Answer:

i dont know

Step-by-step explanation:

its good for free points

The diameter of a circle is 8 centimeters. What is the area? Area cm Use = 3.14​

Answers

Answer:

50.24

Step-by-step explanation:

3.14×4×4=50.24

40 divided by 7 =? help help help

Answers

Answer:

5.714285714 or 5.71

Step-by-step explanation:

Use a calculator

Priya’s family exchanged 250 dollars for 4,250 pesos. Priya bought a sweater for 510 pesos. How many dollars did the sweater cost?

Answers

Answer:

The sweater cost 30 dollars.

Step-by-step explanation:

Set up a proportion

x/510 = 250/4250        Multiply both sides by 510

x = 250 * 510/4250      multiply 250 * 510

x = 127500 / 4250        Divide by 4250

x = 30

try filling out the table.

4250                250 dollars

425                   25   dollars

425/25               1     dollar

17                        1     dollar

17*3                     3   dollars

51                        3   dollars

51*10                   30 dollars

510                      30 dollars.

Translate each statement to a linear inequality in two variables.
1. The total amount of 1-peso coins and 5-peso coins of Pedro in his bag is
Activity 1
more than P150.00.
2. Emily bought two blouses and a pair of pants. The total amount she paid
for the items is not more than P 980.00.
3. The sum of 20-peso bills (t) and 50-peso bills (1) is greater than P 420.00.
4. The difference between the weight of Hazel (h) and John () is at least 26
pounds.
5. Jimuel planted his small garden with okra and talong. The number of
okra crops (k) is twice more than the number of talong crops (i) and their
total is greater than 24.​

Answers

How are you I'm lonely sooooo

Which of the following numbers is a multiple of 4?

Choose 1 answer:

(Choice A)

46

(Choice B)

22

(Choice C)

32

(Choice D)

14

Answers

Answer:

Oof - Use Khan academy

Step-by-step explanation:

Answer:

C

Step-by-step explanation:

C is a multiple of 4 because you can multiply an integer by 4 to get 32.

8 * 4 = 32

do this and show ur work

Answers

Answer: 4.25, 15, and 38.7°

Step-by-step explanation:

Use SOHCAHTOA

Sine is opposite over hypotenuse

Cosine is adjacent over hypotenuse

Tangent is opposite over adjacent

1.) tan(28) = x/8

8*tan(28) = x

x = 4.25

2.) tan(28) = 8/x

8/tan(28) = x

x = 15

3.) tan(x) = 4/5

x = arctan(4/5)

x = 38.7°

What value of x makes this equation true?
-12 + 5x = -24 + x

Answers

Answer:

Step-by-step explanation:

-12+5x=-24+x

4x=-12

x=-3

The value of x will be equal to -3 for the given expression.

What is an expression?

The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.

Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.

Given expression is -12 + 5x = -24 + x. The value of x will be calculated as,

-12+5x=-24+x

4x=-12

x=-3

Therefore, the value of x will be equal to -3 for the given expression.

To know more about an expression follow

https://brainly.com/question/25968875

#SPJ2

A. Find the slope of the line,
b. Find the y-intercept of the line.
c. Write the equation for the line.

Answers

The y intercept is 2
Slope might be -3/4
Equation is y=-3/4x+2

Ion know if the -3/4 is good, I got a good feelin tho. The 2 tho is good, I am sure

Answer:

slope:-2/3

y-intercept= 2

equation y= -2/3x+2

Step-by-step explanation:

pick two points from graph then plug to the formula to find the equation

agenthammerx Please help me on this I beg you

Answers

Answer:

48°∠Y ≅ ∠X

Step-by-step explanation:

Question 1

Prove that The two triangles are congruent

∠ABD ≅ ∠BDC - givenBD ≅ DB - reflexive property∠ADB ≅ ∠CBD - givenΔABD ≅ ΔCDB - ASA postulate

Find the measure of angle C

∠A ≅ ∠C - Corresponding  parts of congruent trianglesm∠C = m∠A = 180° - (62° + 70°) = 180° - 132° = 48°Question 2

Given

ΔXYZ with XZ ≅ YZ

Opposite angles are corresponding to the sides.

Therefore the angles opposite to congruent sides are also congruent:

∠Y ≅ ∠X

Help me pls this is due tomorrow I need help !!

Answers

Answer:

it's B.

Step-by-step explanation:

manuel knows that doubling either the width or length of a rectangle will double its area

The rectangle shown below has a diagonal of 15 cm and a width of 7 cm. To the nearest centimeter, what is the length, x, of the rectangle? Round your answer to the nearest tenth. 15 7 X​

Answers

answer should be 13.3
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