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Lubov Fominskaja [6]
2 years ago
7

Choose the correct equation to solve the problem: Five friends equally split a restaurant bill that comes to $32.50. How much do

es each person pay?
x/5 = 32.50
5x = 32.50
x + 5 = 32.50
x - 5 = 32.50
Mathematics
1 answer:
Daniel [21]2 years ago
4 0
5x = 32.50. and each of them pay $6.50
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xxTIMURxx [149]

Answer:

(-2 , 5)

(-1 , 0)

(1 , -4)

(3 , 0)

(4 , -5)

Step-by-step explanation:

<u>First solve the equation:</u>

x² - 2x - 3

<em><u>Find two numbers with have a sum of -2 and a product of -3.</u></em>

-3 and 1

(x - 3)(x + 1)

Solve for x:

x - 3 = 0

x = 3

x + 1 = 0

x = -1

You know that the graph will cross the x-axis at -1 and 3.

(-1 , 0)

(3 , 0)

You know that the graph is positive.

<u>Complete the square to find the vertex</u>

x² - 2x - 3

(x - 1)² = x² - 2 + 1

x² - 2x - 3 = x² - 2 + 1 - 2 = (x - 1)² - 2

1 = 0

x = 1

Substitute into the original equation:

x² - 2x - 3 =

1² - (2 * 1) - 3 =

1 - 2 - 3 =

-4

(1 , -4)

<em><u>You can input any two numbers within -10 and 10. Such as -2 and 4.</u></em>

x² - 2x - 3 =

-2² - (2 * -2) - 3 =

4- -4- 3 =

5

(-2 , 5)

x² - 2x - 3 =

4² - (2 * 4) - 3 =

16 - 8 - 3 =

-5

(4 , -5)

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3 years ago
How many 16ths are there in 1 inch?
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Answer:

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Step-by-step explanation:

3(x + 4) = 2x + 4x - 6

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3x + 12 = 6x - 6

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x= 6

hope it helps

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Give me the characteristics and I’ll give you the examples
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musickatia [10]

Answer:

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