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Troyanec [42]
1 year ago
12

How many solutions does each system have?

Mathematics
1 answer:
dezoksy [38]1 year ago
6 0

Answer:

System 1 has an infinite number of solutions and System 11 has no solution.

Step-by-step explanation:

System 1:

x = y - 3

x - y = -3

2x - 2y = -6

Divide above by 2:

x - y = -3

So the 2 equations are identical

and they have an infinite number of solutions.

System 11:

5x + 2y = -7

15x + 6y = 21

Divide the above by 3:

5x + 2y = 7

Comparing this to the first equation the left sides are the same but right sides are different ( -7 and  7)/

There is no solution to this system.

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A restaurant interest survey of 230 citizens in a town showed that 80 want a new Chili's, 120 want a new Red Lobster, and 20 wan
mr_godi [17]

The right solution to the given question is "\frac{2}{23}", "\frac{6}{23}" and "\frac{5}{23}".

According to the question,

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By putting the value of "b", we get

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P(both Chili's and Red lobster),

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(b)

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(c)

P(neither),

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What is the total cost of a sweatshirt if the regular price is $45 and the sales tax 5.75%
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Beth purchased $21.25 worth of groceries. The sales tax rate is 7.5%. What was her total bill?

The tax is calculated by 0.075 * 21.25 = 1.59375 or $1.59. So the total bill is the cost of items purchased plus tax, which is $21.25 + $1.59 = $22.84.


Back to your question:

What is the total cost of a sweatshirt if the regular price is $45 and the sales tax 5.75%

The tax is calculated by 0.0575 * 45 = 2.5875 or $2.59. So the total bill is the cost of items purchased plus tax, which is $45 + $2.59 = $47.59

Hope this helped! Good luck!


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Answer:

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