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EastWind [94]
2 years ago
7

Which expressions are equivalent to 4x^2-25? Select all that apply

Mathematics
1 answer:
Kazeer [188]2 years ago
3 0
(2x-5) • (2x+5) are the expressions equivalent to 4x^2-25
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The square root of 84 is it closer to 9 or 10
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The nth term of a sequence is 2n-1.
Zinaida [17]

Answer:

25,31,37

Step-by-step explanation:

n should be positive integer number. The three numbers in both sequences have different term number n but same value. We can equalize each nth term in the question to "a" which represents one of the three numbers.

a=2n-1, then n=(a+1)/2

a=3n+1, then n=(a-1)/3

remember the two n above are different but both should be positive integer. That means, we have to find the "a" number that gives me an integer n for the first equation. The possible numbers between 20 to 40 are 22,25,28,31,34,37,40.

The possible numbers for the second equation are 21,23,25,27,29,31,33,35,37,39.

Now find the common numbers between the two sets above. They are 25,31,37

6 0
3 years ago
The highest temperature recorded in Centerville last year was 99°F on July 11. The lowest temperature was -13°F on January 16. W
Leya [2.2K]

Answer:

The answer to your question is: ΔT = 112°F

Step-by-step explanation:

Data

highest temperature = 99°F

lowest temperature = -13 °F

Difference = ?

Process

ΔT = highest T  - lowest T

Δ T = 99 - (-13)

ΔT = 99 + 13

ΔT = 112°F

5 0
3 years ago
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