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Aleonysh [2.5K]
3 years ago
11

What's the distance between 3 1/4 and 6 1/2?

Mathematics
1 answer:
Basile [38]3 years ago
4 0
6 1/2 - 3 1/4 = 13 / 2 - 13 / 4 = 26 / 4 - 13 /4 = 13 / 4 is the distance;
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Every two days he’s trying to spend 1.75 hours observing dolphins and 2.5 hours observing sea lines at this rate how many total
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4 years ago
The life of light bulbs is distributed normally. The variance of the lifetime is 900 and the mean lifetime of a bulb is 520 hour
Alex73 [517]

Answer:

0.969

Step-by-step explanation:

Given that:

Mean lifetime (m) = 520 hours

Variance = 900

Hence, standard deviation (s) = √900 = 30

Probability that bulb will last for at most 576 hours

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Using the relation :

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8 0
3 years ago
A rock is thrown and follows the curve given by the equation d = -t2 + 4t + 5, where d is the distance in feet and t is the time
GaryK [48]

Answer:

5 seconds

Step-by-step explanation:

The relationship between "d" and "the ground" is not described. If we assume that "d" is distance above the ground, then the rock will hit the ground when d=0. This gives rise to the quadratic equation ...

-t^2 +4t +5 = 0

-(t -5)(t +1) = 0

t = 5 or t = -1 are solutions. Only the positive solution is useful.

The rock will hit the ground after 5 seconds.

8 0
3 years ago
Could I have help with this question please
atroni [7]
A) 3.5
B) 9.8666

Hope this helps
5 0
3 years ago
Read 2 more answers
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