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stich3 [128]
3 years ago
13

If a number minus 3 is at most 12, or 1 more than 2 times the number is at least 25, then the number must be less than or equal

to 15, or greater than or equal to 12. True or False
Mathematics
1 answer:
dezoksy [38]3 years ago
3 0

Answer:

The statement is true.

Step-by-step explanation:

Let us assume that x is the required number.

Now, given that the number minus 3 is at most 12.

Hence, x - 3 ≤ 12

⇒ x ≤ 15 ......... (1)

And also given that 1 more than 2 times the number is at least 25.

Hence, 2x + 1 ≥ 25

⇒ 2x ≥ 24

⇒ x ≥ 12 .......... (2)

Therefore, from equations (1) and (2) we get the number must be greater than or equal to 12 or less than or equal to 15.

So, the statement is true. (Answer)

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Given : A linear regression equation was computed to predict the final exam score from score on the midterm exam.

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