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egoroff_w [7]
1 year ago
5

You spend $30.40 on 4 cds. each cd costs the same amount and is on sale for 80% of the original price. write and solve an equati

on to find out how much you spend on each cd
Mathematics
1 answer:
Ratling [72]1 year ago
8 0

The original price of a CD is $9.50. However, since they are 80% off, you spend $7.60 on each CD.

Steps to translate the given word problem to a linear equation.

  1. Read carefully the problem
  2. Find out what value is given, what is required, and what is asked to find.
  3. Use variables to represent the unknowns. A variable is usually represented by a letter such as x, p, m, and so on.
  4. Translate the problem into equations.
  5. Solve the equations using elimination, substitution, or graph method.

In the given problem, let p be the original price of each CD.

The CD is on sale for 80%, therefore, $30.40 is the total money spent for 4 discounted CDs.

We can represent this as:

    4 x (80% x p) = 30.40

     4 (0.8p) = 30.40

      3.2 p = 30.40

            p = 9.50

Hence, the original price of a CD is $9.50. However, since they are 80% off, you spend = 0.8 x $9.50 = $7.60 on each CD

Read more about translating a word problem into an equation here:

brainly.com/question/13818690

#SPJ4

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FrozenT [24]
There are tons! But here are a few examples for ya:
4/16
6/24
8/32
1/4

Hope this helps!!
7 0
2 years ago
Read 2 more answers
Please help!!!! ASAP I’ll mark you as brainliest
KatRina [158]

Answer:

Vel_jet_r =  (464.645 mph)  North + (35.35 mph) East

||Vel_jet_r|| =  465.993 mph

Step-by-step explanation:

We need to decompose the velocity of the wind into a component that can be added  (or subtracted from the velocity of the jet)

The velocity of the jet

500 mph North

Velocity of the wind

50 mph SouthEast = 50 cos(45) East + 50 sin (45) South

South = - North

Vel_ wind = 50 cos(45) mph  East  -  50 sin (45) mph North

Vel _wind =  35.35 mph  East  -  35.35 mph North

This means that the resulting  velocity of the jet is equal to

Vel_jet_r =  (500 mph - 35.35 mph) North + 35.35 mph East

Vel_jet_r =  (464.645 mph)  North + (35.35 mph) East

An the jet has a magnitude velocity of

||Vel_jet_r|| =  sqrt ((464.645 mph)^2 + (35.35 mph)^2)

||Vel_jet_r|| =  465.993 mph

7 0
3 years ago
I have no idea how to do this, please help!
Marta_Voda [28]

Answer:

24

Step-by-step explanation:

7 0
3 years ago
Can someone plz help me with this one problem plz!!!
Nataliya [291]
Dont click the linktrust me
7 0
3 years ago
What is 6+3(-8x-2)=12
aleksandr82 [10.1K]

Answer:

6 + 3 (-8 x -2)

Step-by-step explanation:

6 + 3 (-8 x -2)

= 6+3 ( 16 )

= 9 ( 16 )

= 144

3 0
3 years ago
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