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denis-greek [22]
3 years ago
6

PLEASE HELP!! I will award Brainliest and give 55 POINTS!!! THANK YOU

Mathematics
2 answers:
ruslelena [56]3 years ago
6 0

Answer:

79

Step-by-step explanation:

If we square m + 1/m we get (m + 1/m)² = m² + 2 * (m * 1/m) + 1/m² = m² + 2 + 1/m². Since m + 1/m = 9, (m + 1/m)² = 81 so that means that m² + 1/m² = 81 - 2 = 79.

Daniel [21]3 years ago
3 0

Answer:

79 is correct  

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what is the least number that must be added to 2000 so that the sum is divisible exactly 10,12,16and 18 ? do it step by step
Rudiy27

The integers divisible by any set of positive integers are the multiples of their LCM

let us first write the factored form of each

10 = 2×5

12 = 2×2×3

16 = 2×2×2×2

18 = 2 x3×3

Now we will find lcm of these numbers

LCM = 2×2×2×2×3×3×5 = 720

The multiples of 720 are divisible by 10,12,16 and 18.

2000/720 = 2.777777...

The least integer greater than that is 3, so 3×720 = 2160 is the least integer greater than 2000 that is divisible by 10,12,16 and 18.

so if we need to find what must be added to 2000 so that the sum is divisible by 10,12,16 and 18, we must subtract 2000 from 2160

2160-2000=160

so we must add 160 to 2000 so that the sum is divisible exactly 10,12,16and 18

5 0
3 years ago
–2x2 – 12x – 9 = 0 PLS HELP I DO NOT WANT TO FAIL I WILL GIVE BRAINLIEST
Pie
The right answer is -13/12.
4 0
3 years ago
What is 12.25 as a fraction
Finger [1]

Answer:

\large\boxed{12.25=\dfrac{49}{4}}

Step-by-step explanation:

12.\underbrace{25}_{2}=\dfrac{1225}{1\underbrace{00}_2}=\dfrac{1225:25}{100:25}=\dfrac{49}{4}\\\\12.25=12+0.25=12+\dfrac{25}{100}=12+\dfrac{25:25}{100:25}=12+\dfrac{1}{4}\\\\=\dfrac{12\cdot4}{4}+\dfrac{1}{4}=\dfrac{48+1}{4}=\dfrac{49}{4}

8 0
3 years ago
Rewrite 1 3/4 using twentieths
Evgesh-ka [11]
The correct answer is 29/20
4 0
2 years ago
Work must be shown, 15 points if answered, + brainlynessiest answer
Mkey [24]

Answer:

40cm

Step-by-step explanation:

if the area is 100 then you have to do the square root of 100 which is 10.

each side is 10.

10 x 4 because 4 equal sides

40

3 0
2 years ago
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