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nika2105 [10]
3 years ago
7

Nine less than three times a number is greater than forty

Mathematics
1 answer:
pentagon [3]3 years ago
7 0
Start with an equation.
Nine less... so -9
3 times a number = 3x
Greater than 40 is >40

So put together is 3x-9>40
When solving I imaging the greater than sign as an equal sign. Less confusing.
3x-9=40
3x=49
x>49/3
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Which operation, when performed on two polynomials, always results in a polynomial? Select all that apply.
Xelga [282]

Answer:

B. Division

You cannot add anything when you divide, so it would remain a polynomial.

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3 years ago
You can run 5 miles in 25 minutes. At this rate, how many miles can you run in 3 hours
kotegsom [21]
Well, if you run 5 miles in 25 minute you run a mile every 5 minutes. So, there is 190 minutes in 3 hours. So we would need to divide 190 by 5 which is 38. So, the person could run 38 miles in 3 hours. 
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3 years ago
A man sold 50 metres of cloth for Rs.5640 at a profit of 20%.
disa [49]
I) 80% x 5640 = Rs. 4512
ii) 4512 divide by 50 = Rs. 90.24
8 0
3 years ago
each time kim pour water from a jug into a glass, exactly 10% of the water remaining in the jug is used. What is the minimum num
Gnoma [55]

The <em><u>correct answer</u></em> is:

At least 7 times.

Explanation:

Since 10% of the water in the jug is removed each time, this means that 100-10=90% of the water remains.

After two times, we would have 0.9(0.9) = 0.81 = 81% of the water; each time she pours, the number of times 0.9 is multiplied by itself changes.  This makes this an exponential inequality (it is not an equation, as we want "less than half of the water"):

0.5 < 0.9^x

To solve this, we will use logarithms:

\log_{0.9}(0.5)

4 0
3 years ago
Question 1
zhannawk [14.2K]

The applications that will involve percentages include:

  • Sales Tax
  • Original Sale Price
  • Commission
  • Income Tax

<h3>Which applications involve percentages?</h3>

Sales tax will involve percentage because the sales tax percentage will be needed to calculate the sales tax. The same goes for the income tax.

Commissions also involve percentages as the commission is a percentage of sales. The original sales price can only be acquired by using the discount or markup percentage applied to it to get the current sales price.

Find out examples of commission percentages at brainly.com/question/24951536.

6 0
2 years ago
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