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lesantik [10]
3 years ago
15

Help pls its iready ill give brainiest

Mathematics
2 answers:
Nady [450]3 years ago
8 0
C=2pi2
c=12.56

so the last one
ladessa [460]3 years ago
5 0

Answer:

I think that it is the second one

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Which triangle is a 30°-60°-90° triangle?
vova2212 [387]

Answer:

right angle triangle

Step-by-step explanation:

because the number given below is less then 90°

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What is the mean absolute deviation of the following set of data 12 10 12 6 8 4 2 12
mojhsa [17]

Answer:

The mean is 8.3.

Step-by-step explanation:

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3 years ago
Of 125 students in 5th grade, 3/5 of them have a mobile phone. How many students do not have a mobile phone?
Annette [7]

Answer:75

Step-by-step explanation:125÷ 5=25

25*3=75

5 0
4 years ago
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An airplane is flying 600 mph on a horizontal path that will take it directly over an observer. The airplane remains a constant
dezoksy [38]
<h2>Change of the distance between the observer and the airplane when X = 5 miles is 348.84 mph</h2>

Step-by-step explanation:

We have by Pythagoras theorem

       Distance between the observer and the airplane² = Horizontal distance² + Altitude²

        d² = h² + a²

Here we have

          h = X = 5 miles

          a = 7 miles

          d² = 5² + 7²  = 74

          d =8.60 miles

          \frac{dh}{dt}=600mph\\\\\frac{da}{dt}=0

Differentiating d² = h² + a² with respect to time

            2d\frac{dd}{dt}=2h\frac{dh}{dt}+2a\frac{da}{dt}\\\\8.60\frac{dd}{dt}=5\times 600+7\times 0\\\\\frac{dd}{dt}=348.84mph

Change of the distance between the observer and the airplane when X = 5 miles is 348.84 mph

5 0
4 years ago
M is a perfect square greater than 10 but less than 64​
Karolina [17]

Answer:

See below ~

Step-by-step explanation:

There are 4 possible solutions :

<u>m = 4</u>

  • m²
  • (4)²
  • 16
  • 10 < 16 < 64

<u>m = 5</u>

  • m²
  • (5)²
  • 25
  • 10 < 25 < 64

<u>m = 6</u>

  • m²
  • (6)²
  • 36
  • 10 < 36 < 64

<u>m = 7</u>

  • m²
  • (7)²
  • 49
  • 10 < 49 < 64
8 0
2 years ago
Read 2 more answers
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