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olya-2409 [2.1K]
3 years ago
5

Seven is 3 less than twice the number m

Mathematics
2 answers:
sweet [91]3 years ago
6 0

the answer is 5 because seven plus 3 is 10 and half of ten is 5 so 5 times 2 is 10

aleksley [76]3 years ago
3 0

Answer:

m=5

Step-by-step explanation:

Let the number be represented by m.

Then twice the number m is represented as 2* m or 2m.

3 less than twice the number m = 2m -3

As per the question this value is 7.

Representing this in equation format:

=> 2m-3 = 7

=> 2m = 7+3 = 10

=> m= 10/2 = 5

Hence the number m is given by 5.

Verification:

Twice the number = 2* 5 = 10

3 less than twice the number m = 10 -3 = 7

This is the same as 7 as per the requirement.

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Step-by-step explanation:

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∵ x² + (a + b)x + (ab) = (x + a)(x + b)

- From the formula above the coefficient of x is the sum of the two

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∴ p = a + b and q = ab

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* Lets solve the problem

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∵ x² + px + q is the form of quadratic polynomial

∴ p = 9 and q = 8

∵ p = a + b and q = ab

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∴ ab = 8 ⇒ (2)

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