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Blababa [14]
3 years ago
12

What is the final amount if 1230 is increased by 15% followed by a 17% decrease? Give your answer rounded to 2 DP.

Mathematics
1 answer:
Snezhnost [94]3 years ago
4 0

Answer:

1174.04

Step-by-step explanation:

15% increase is 115% or 1.15

17% decrease is 83% or 0.83

0.83(1.15(1230))

= 1174.035

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Solve the quadratic equation. <br><br> 3x^2 - 5= 70<br><br> (Please explain steps)
Svet_ta [14]
Simplifying
3x2 + -5 = 70

Reorder the terms:
-5 + 3x2 = 70
Solving
-5 + 3x2 = 70

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '5' to each side of the equation.
-5 + 5 + 3x2 = 70 + 5

Combine like terms: -5 + 5 = 0
0 + 3x2 = 70 + 5
3x2 = 70 + 5

Combine like terms: 70 + 5 = 75
3x2 = 75

Divide each side by '3'.
x2 = 25

Simplifying
x2 = 25

Take the square root of each side:
x = {-5, 5} and that’s it.
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3 years ago
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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.

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Hope this helps you

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If n stands for number sold and c stands for cost per item, in which column would you use the formula a. Column D c. Column F b.
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Can you post a picture of the question?
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shusha [124]

The first sentence in the chart belongs to the subjunctive mood, while the other sentences can be classified as part of the conditional mood.

<h3>What is a verb mood?</h3>

In language, the verb mood indicates the attitude of the speaker, and therefore, it provides clues about the way language is used. For example, the imperative mode indicates an order is being given.

<h3>What is the difference between the conditional and the subjunctive mood?</h3>
  • Subjunctive: It is used for expressing wishes; due to this, it is common to find the use of words such as "wish".
  • Conditional: It expresses a condition or a situation that will/can happen if another situation occurs. This can be identified due to the use of "if".

Based on this, the first sentences belongs to the subjunctive mood, while the other sentences are part of the conditional.

Learn more about the subjunctive in: brainly.com/question/22728240

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Given an example of a line that is parallel to y = 3x - 4
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Answer:

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Step-by-step explanation:

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