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11Alexandr11 [23.1K]
3 years ago
12

what was the orignal amount of a backpack that is now on sale for $85.50, and has discounted 10% SHOW WORK PLZ

Mathematics
1 answer:
Anna71 [15]3 years ago
6 0

Answer:

8.55

Step-by-step explanation:

85.50 * 10%

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Suma doua numere este 702.Diferenta lor este un sfert din scazator .Afla cele doua numere dAU COROANA
Molodets [167]

Answer:

Cele două numere căutate sunt:

  1. <u>390 </u>
  2. <u>312</u>

Step-by-step explanation:

Pentru a rezolva necunoscutul cu aceste două numere, trebuie create două ecuații cu două necunoscute X și Y cu informațiile obținute: În primul rând, știm că suma celor două numere este egală cu 702, prin urmare:

1. <u>X + Y = 702 </u>

Apoi se menționează că diferența (adică scăderea) dintre cele două numere este egală cu un sfert din numărul cel mai mic, pentru a avea o referință, vom identifica variabila Y ca fiind cel mai mic număr, deci a doua ecuație ar fi:

2. <u>X - Y = 0,25Y</u> sau <u>Y / 4 </u>

Ștergem variabila X în a doua ecuație:

  • X - Y = 0,25Y
  • X = 0,25Y + Y
  • <u>X = 1,25Y </u>

Ecuația 1 este acum folosită cu X-ul șters:

  • X + Y = 702
  • 1,25Y + Y = 702
  • 2,25Y = 702
  • Y = 702 / 2,25
  • <u>Y = 312 </u>

Acum, din moment ce se știe că este X = 1.25Y, valoarea lui Y este înlocuită și obținem:

  • X = 1,25Y
  • X = 1,25 * 312
  • <u>X = 390</u>
8 0
3 years ago
The triangle shown below has an area of 16 units^2
AleksandrR [38]

Answer:

8

Step-by-step explanation:

base x height / 2 = the area

4 x h / 2 = 16

h = 8

so x is 8

4 0
3 years ago
Read 2 more answers
How can you model geometry figures to solve real world problems
Strike441 [17]
You can model geometry for making buildings and sky scrapers, also stores.
6 0
3 years ago
If the perimeter of a rectangle is 78 inches and the length is 13 inches more than its​ width, find the area of the rectangle.
Feliz [49]
I believe the area of the rectangle would be 338
8 0
3 years ago
write the equation x^2 + 4y^2 - 6x - 7=0 in the standard form. state whether the graph is a parabola, circle, ellipse, or hyperb
Verizon [17]
X^2  + 4y^2 - 6x = 7

x^2  - 6x + 9  + 4y^2  = 16

(x-3)^2/16 + y^2/4 = 1

The graph is an ellipse

hope this helps
8 0
3 years ago
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