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Kay [80]
3 years ago
15

Need help with this question.​

Mathematics
1 answer:
sergejj [24]3 years ago
4 0

Answer:

12 and 93.

Step-by-step explanation:

Let the grandsons age be x then Mr. Roger's age = 8x - 3.

Five years ago the grandson's age was x-5 and Mr Rogers was 8x - 8 years old , so:

8x - 8 - (x - 5) = 81

8x - 8 - x + 5 = 81

7x = 81 + 8 - 5 = 84

x = 12.

So the grandson is 12 and Mt Rogers is  8*12 - 3 = 93.

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Part A:
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Part B:
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Part C:
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MaRussiya [10]

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Step-by-step explanation:

To Find:

If discriminant (b^2 -4ac>0) how many real solutions

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