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kykrilka [37]
4 years ago
12

Is the ordered pair a solution to the system of linear equations?

Mathematics
1 answer:
Marta_Voda [28]4 years ago
5 0
<span>​-7x + 2y = 0
6x + 6y = 0
</span><span>​ordered pair: (−2,2)

the way to figure out if that ordered pair is a solution is pretty simple, you just plug the ordered pair into both equations, and check if the outcome is true.

</span>​-7(-2) + 2(2) = 0
14 + 4 = 0
18 = 0 is NOT true, so this isn't a solution. still, check your second equation as well.

6x + 6y = 0
6(-2) + 6(2) = 0
-12 + 12 = 0

for this equation, it is a solution. however, because the solution must apply to the system as a whole, and not just one of the equations, the ordered pair still is not a solution.
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1. Mrs. Nelson wants to buy a wireless speaker for her son. She has narrowed down her choice to two stores:
Oksi-84 [34.3K]

a) Mrs. Nelson will pay $45 for the speaker at Kohl's.

b) Mrs. Nelson would pay $43.70 for the speaker at Target.

c) Mrs. Nelson would get the best deal from Target's.

Step-by-step explanation:

Selling price at Kohl = $60.00

Discount coupon = 25%

Purchase price of Target = $38.00

Mark up = 15%

a.) How much would Mrs. Nelson pay for the speaker at Kohl’s?

Discount = 25% of selling price

Discount amount = \frac{25}{100}*60=\frac{1500}{100}

Discount amount = $15

Cost after discount = Selling price - Discount amount

Cost after discount = 60-15 = $45

Mrs. Nelson will pay $45 for the speaker at Kohl's.

b.) How much would Mrs. Nelson pay for this speaker at Target?

Mark up = 15% of purchase price

Mark up amount = \frac{15}{100}*38=\frac{570}{100}

Mark up amount = $5.70

Price after mark up = Purchase price + Mark up amount

Price after mark up = 38.00+5.70 = $43.70

Mrs. Nelson would pay $43.70 for the speaker at Target.

c.) Which store would Mrs. Nelson get the best deal and by how much?

Difference between prices = 45-43.70 = $1.30

Mrs. Nelson will save $15 on Kohl's and she will get the speaker at $43.70 at Target's, therefore, she would save $1.30 more if she buys speaker from Target's.

Mrs. Nelson would get the best deal from Target's.

Keywords: mark up, discount

Learn more about mark up at:

  • brainly.com/question/1849465
  • brainly.com/question/1859525

#LearnwithBrainly

5 0
3 years ago
Aiden has a gross income of $63,000 and takes the standard deduction.
Digiron [165]

a) Aiden's taxable income is $50,450.

The taxable income is equal to the gross income minus the standard deduction.

= $50,450 ($63,000 - $12,550).

b) Aiden's marginal tax rate = 22% (for taxable income falling under the income bracket of $40,526 to $86,375 for the tax 2021 year.  It is assumed that Aiden is single.

c) Aiden's effective tax rate = 13.72%.  The effective tax rate = total taxes due divided by Aiden's taxable income.

= 13.72% ($6,922/$50,450 x 100)

Related links on taxable income at brainly.com/question/1160723

7 0
3 years ago
Need whole answer please
soldi70 [24.7K]

Answer: Audrey is less than 17 years old (possible answers 16,15,14,13...)

Answer in inequality: x<17

Step-by-step explanation:

3x + 9 < 60

3x + 9 - 9 < 60 - 9

3x < 51

x<17

4 0
4 years ago
Read 2 more answers
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ioda

Answer:

As angel WVU = angel WVF + angel FVU

Therefore angel WVF =152 - 70

so, angel WVF = 82

4 0
3 years ago
in a multiplication problem, if the first factor has 5 digits after the decimal and the second factor has 4 digits after the dec
STatiana [176]
9 digits after the decimal because 5+4=9
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4 years ago
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