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Komok [63]
3 years ago
11

A scientist wants to study the average lifespan of a population of 1000 glow worms. He records the lifespan of a random selectio

n of 60 worms and finds that 20 of them live for 10 months, 15 of them live for 10.5 months, and 25 of them live for 11 months. What is the sample mean of the lifespan of the population of glow worms? Round your answer to the nearest tenth and do not include units.
Mathematics
2 answers:
Nat2105 [25]3 years ago
8 0

Answer: 10.5

With out being rounded it’s 10.5417

Step-by-step explanation:

scoray [572]3 years ago
5 0
75 cuz max was gay really real happy
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lesantik [10]
Work out 8% of 30000

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Therefore 10%-2%= 3000-600=2400

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7 0
3 years ago
Write the ratio using fraction notation and reduce.
valkas [14]

The ratio using fraction notation of $5 to $35 would be 7.

<h3>What is a fraction?</h3>

A fraction represents a part of a number or any number of equal parts.

To convert a ratio into a fraction,

We will simply use the first number as the numerator and the second number as the denominator.

So the fraction = 35/5.

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Since there are no more common factors, the fraction is in its lowest form which is 7.

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3 0
2 years ago
Help please, i am struggling on how to solve!
Elina [12.6K]

Answer:

x=3

Step-by-step explanation:

The hypotenuses are equal in length of both triangles.

13=4x+1

13-1=4x

12=4x

12/4=x

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When a² + a – 3 is subtracted from 3a? – 5, the result is
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