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Brut [27]
3 years ago
8

Find three consecutive integers whose average is 20. please show work!!

Mathematics
2 answers:
Mumz [18]3 years ago
8 0

Answer:

19,20,21

Step-by-step explanation:

The average is 20. The numbers can be written as: 20+a, 20 +b, 20+c, with a, b, c integers (positive and negative, but higher than - 19),with a+b+c =0.

You have to find the combination a, b, c with the smallest positive integer as its higher number.

Obviously, you start with 1, and find - 1,0,+1 as a suitable solution.

Therefore, the numbers are 20-1, 20,20+1

=> 19,20,21

Rudiy273 years ago
4 0

Answer:

4x times 5x equals 20x

20x times 1x equals 20x

15x plus 5x equals 20x

Step-by-step explanation:

hope it helps

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If car can travel 50 miles in 55 minutes, how long will it take to travel 75 miles ?
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First of all, if you are traveling more, then you will have to take more time to get there. So since the answer A is less than the original number 50 you can rule that choice out. Now to solve, you will put 50 over 55 such as this 50/55. This represents miles/minutes. So next you will put 75/x since we are trying to solve for x (minutes). Now our problem looks like this 50/55 times 75/x. To solve the answer you will need to cross multiply. You will multiply 75 and 55 together to get 4,125. (This will be your numerator, or top number) Next you will multiply 50 and x, this gives you 50. (This will be your denominator, or bottom number. Now you have 4,125/50. Divide your two numbers and you get 82.5! The answer is D. 82.5! Hope I helped!
7 0
4 years ago
Multiply the following polynomial and write the resulting polynomial in descending order. (3x-8)(2x^2+4x-9)
Step2247 [10]
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7 0
3 years ago
Evaluate the following expression if x=4 28x - 9 (2x+ 6)​
musickatia [10]

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Step-by-step explanation:

substitute 4 for x

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(reverse tax calculator)

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If your total receipt amount was $57.98, and you paid 1.07 percent in sales tax, you’d simply plug those numbers into our calculator to find out that your original price before tax was $57.37. From there, it is a simple subtraction problem to figure out that you paid .61 cents in sales tax."

5 0
3 years ago
Read 2 more answers
Please I really need help
san4es73 [151]

Answer:

its probably 2.0 or 0.2

Step-by-step explanation: x√=x−2

I really hope this helps i'm not that smart with this....


4 0
4 years ago
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