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8_murik_8 [283]
3 years ago
11

Evaluate the following expression using the given values:

Mathematics
1 answer:
Snowcat [4.5K]3 years ago
5 0
X-3y
(3) - 3(-2)
3 + 6
9
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Find the amount of tax and the tax rate. Round to two decimal places
Makovka662 [10]

Answer:

The tax amount is 15.17$

The tax rate is 12.4%.

Step-by-step explanation:

First we subtract the cost from the selling price.

137.17 - 122 = 15.17

We have found the tax amount, now for the tax rate.

If tax rate is x, then

122 * x = 137.17

Divide both sides by 122 to get

x = 137.17/122 = 1.124, or .124.

Then convert into percentage by moving the decimal to the right 2 times.

.124 = 12.4%

Hope this helps you

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4 years ago
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Donna guessed there were 400 jellybeans in a jar. There were really 480 jellybeans. What was her percent of error?
miss Akunina [59]

Answer:

≈83.33%

Step-by-step explanation:

400/480 = 5/6

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Ummmm so I tried to figure it out but I’m really confused pls help
weeeeeb [17]

Answer:

The price of one ticket is $76.

Step-by-step explanation:

5% of $330 is $16.50 and 45% of $330 is $148.50. Add those two together and then add $13 to it. You should get 178 and subtract it from 330 which leads you to 152. It asks for the price of one ticket, so you divide that by 2 which results to $76.

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Please help me this is my final question for the quarter deciding my report card grade
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$300.00

Step-by-step explanation:

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3 years ago
To eliminate the y-terms and solve for x in the fewest steps, by which constants should the equations be multiplied by before ad
Kryger [21]

Answer:

The first equation should be multiplied by 9 and the second equation by −4

Step-by-step explanation:

Given the simultaneous equation

First Equation: 5x − 4y = 28

Second equation: 3x - 9y = 30

In order to eliminate y, we must make the coefficient of x in both expression to be equal.

To do that the first equation should be multiplied by 9 (negative value of the coefficient of y in equation 2)and the second equation by -4( (coefficient of y in equation 1)

7 0
3 years ago
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