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Viefleur [7K]
3 years ago
12

Solve the system for x and y -3x+8y=103 -5x-8y=-255

Mathematics
1 answer:
Romashka-Z-Leto [24]3 years ago
3 0

9514 1404 393

Answer:

  (x, y) = (19, 20)

Step-by-step explanation:

The coefficients of y are opposites, so we can add the two equations to eliminate y.

  (-3x +8y) +(-5x -8y) = (103) +(-255)

  -8x = -152

  x = 19 . . . . . . . divide by -8

Substituting into the first equation, we have ...

  -3(19) +8y = 103

  8y = 160

  y = 20

The solution is (x, y) = (19, 20).

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7 0
3 years ago
While looking at some reports, a store manager notes that televisions that retail for $475 and up costing customers $513 once th
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The sales tax percentage of the store manager report is 7.41%

<h3>How to solve for the sales tax percentage</h3>

Customers are subject to a charge known as sales tax when they buy goods and services.

It is a pass-through tax, which means you must collect it from clients and send the money to your state or local government. the seller do not contribute sales tax.

The sales tax is first calculated by

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sales tax percentage is calculated using the formula

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Learn more about sales tax at:

brainly.com/question/20220356

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