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kozerog [31]
3 years ago
13

Seven times the difference of 9 and a number amounts to 84. Find the number.

Mathematics
1 answer:
Stels [109]3 years ago
4 0
7 * (n-9) = 84
  7n - 63 = 84
          7n = 147
          /n      /n
            n = 21

Therefore the number is 21.

Proof:

7 * (21-9) = 84
      7 * 12 = 84
           84 = 84

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Which of the following could be<br> the sum of exactly three<br> consecutive even integers?
OLEGan [10]

Answer: 198 is your answer:65+66+67 = 198 Hope I helped!

Step-by-step explanation:

8 0
3 years ago
Bruce saved $ 35.00 to buy a new video game. The game's original price was $ 42.00 , but it was on sale for 30% off. The sales t
Brilliant_brown [7]

Bruce have $35 which is greater than amount to be paid i.e. $30.87 . So , Bruce have enough money to buy the game .

<u>Step-by-step explanation:</u>

Here we have , Bruce saved $ 35.00 to buy a new video game. The game's original price was $ 42.00 , but it was on sale for 30% off. The sales tax rate was 5%.  We need to find Did Bruce have enough money to buy the game .Let's find out:

We have , Bruce saved $ 35.00 to buy a new video game . The game's original price was $ 42.00 , but it was on sale for 30% off. i.e.

Price = Original price - \frac{Original-price(30)}{100}

⇒ 42-\frac{42(30)}{100}

⇒ 42-\frac{1260}{100}

⇒ 42-12.6

⇒ 29.4

Now,  The sales tax rate was 5%. So , total amount to be paid is :

⇒ 29.4 + \frac{29.4(5)}{100}

⇒ 29.40 +1.47

⇒ 30.87

Bruce have $35 which is greater than amount to be paid i.e. $30.87 . So , Bruce have enough money to buy the game .

4 0
3 years ago
Which is not equal to the absolute value of -1?
timurjin [86]

Answer:

-2

Step-by-step explanation:

Absolute value is the distance from a number to 0 on the number line, so the number can't be negative, only positive. The absolute value of -1 would be 1, therefore it couldn't be -2, or any other negative numbers.

5 0
3 years ago
What is the simplest form of this expression? (x + 7)(3x − 8) A. 3x2 + 2x − 15 B. 3x2 + 29x − 1 C. 3x2 − 29x − 56 D. 3x2 + 13x –
Lorico [155]

━━━━━━━☆☆━━━━━━━

▹ Answer

<em>D. 3x² + 13x - 56</em>

▹ Step-by-Step Explanation

(x + 7)(3x - 8) (<em>Using FOIL method)</em>

x * 3x - 8x + 7 * 3x - 7 * 8

3x² - 8x + 7 * 3x - 7 * 8

3x² - 8x + 21x - 56

3x² + 13x - 56

Hope this helps!

- CloutAnswers ❁

Brainliest is greatly appreciated!

━━━━━━━☆☆━━━━━━━

3 0
3 years ago
Read 2 more answers
Please help! I will give 5 star rating and brainlest ! To anyone that helps with this question
kiruha [24]

Answer:

wat is the question?

Step-by-step explanation:

5 0
4 years ago
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