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2 years ago

Find the original price of a pair of shoes if the sale price is $28 after a 50% discount.

Mathematics

1 answer:

Grace [21]2 years ago

8 0

Answer:

The original price was 56 dollars

Step-by-step explanation:

28 divided by 0.5 equals 56

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Which of the following is the x-coordinate of the solution to the system shown below

lyudmila [28]

Answer is x = 7

if u plug in 7 in the second expression, we can get 7 - y = 4, isolate y and then we get 3.

Now, plug in 7 in the first equation to get 2(7) + y = 17. that results to 14 + y = 17. isolate y again and then thats also 3.

so:
x = 7
y = 3

6 0

3 years ago

Read 2 more answers

I need help solving

vaieri [72.5K]

Answer:

well if you're looking for angles then

angle ADB = 30°

angle CBD = 80°

angle CDB = 120°

but they asked to classify triangle ADC ,whose measurements are 90° , 40° and 50° ...so of they're asking what type of triangle then it is a right angled triangle.

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3 years ago

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Order of Operation pls help I'll mark u Brainly<br>Sorry if it's a lot.

KonstantinChe [14]

Okay, I got you...

2) 2

3) 6

4) 33

5) 5

6) 19

No. (12+6)/2=9

and 12+6/2=15

This happens because in order of operations parentheses come first, so you would do that and get 18. Then you would divide 18 by 2 and get 9.

On the second one you would do division first (6/2) and get three, the you would add 12 and end up with 15.

Hope this helps :)

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3 years ago

Students attending the University of Florida can select from 130 major areas of study. A student's major is identified in the re

omeli [17]

Answer:

1. 8385 double majors

2. 18252 major codes

3. 8515 codes

4. Yes

Step-by-step explanation:

Given

Major areas = 130

Alphabets = 26

There are 130 major areas in the university.

To get a double majors, means one select any of two of the major areas in the university.

i.e. just 2 alphabets are needed

Number of Double Majors = 130C2

130C2 = 130!/(128!*2!)

130C2 = 130 * 129/2

130C2 = 8385.

Number of major codes available = Number of 2 digit codes + Number of 3 digit codes

Number of 2 digit codes = 2 alphabets

There are 26 ways of selecting the first letter

There are 26 ways of selecting the second letter

So, number of 2 digit codes = 26 * 26 = 676.

Number of 3 digit codes = 3 alphabets

There are 26 ways of selecting the first letter

There are 26 ways of selecting the second letter

There are 26 ways of selecting the third letter

So, number of 3 digit codes = 26 * 26 * 26 = 17576

Thus, number of major codes = 17576 + 676 = 18252

Number of codes to identify a student with either a single major or double major

Number off single major codes = number of major areas = 130

Number of double major codes = 8385

Total = 130 + 8385 = 8515

d. From the solutions above, Yes there are enough codes available to identify all single and double majors at the university

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3 years ago

Graham uses a 10 by 10 grid to model a decreasing pattern. He cuts off a section representing a percent of the current area so t

Bogdan [553]

After each cut, by observing the graph, the remaining area is 80% of the previous area.

It is given that

Actual area = 100cm²

<h3>What is the percentage?</h3>

The percentage is the value per hundred.

According to the graph,

Area after the first cut =80cm² (80% of the previous are)

Area after the second cut = 64 cm²(80% of 80)

Area after third cut = 51.2 cm²(80% of 64)

So we can observe that area after each cut is 80% of the previous area.

Therefore, after each cut, the remaining area is 80% of the previous area.

to get more about percentage visit:

brainly.com/question/24304697

8 0

2 years ago