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Komok [63]
2 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]2 years ago
8 0

Answer: 10.5

With out being rounded it’s 10.5417

Step-by-step explanation:

scoray [572]2 years ago
5 0
75 cuz max was gay really real happy
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Which statement best describes relations between the United States and South Korea today?
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C. The United States maintains military forces in South Korea, a close ally.

Step-by-step explanation:

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A right triangle has legs of length 4x and 20x. What is an expression for the hypotenuse of the right triangle
kherson [118]

Answer:

4x\sqrt{26}.

Step-by-step explanation:

Given information:

Leg_1=4x

Leg_2=20x

According to the Pythagoras theorem,

(hypotenuse)^2=(Leg_1)^2+(leg_2)^2

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2 years ago
Kelsey buys several pairs of uniform pants for $17.95 each, and a sweater for $24. Jeana shops at a different store and buys sev
Brilliant_brown [7]

Answer:

If both Kelsey and Jeana purchase 6 pairs of uniform pants then they would pay the same amount for their purchases.

Step-by-step explanation:

The information provided is as follows:

  • Kelsey buys several pairs of uniform pants for $17.95 each, and a sweater for $24.
  • Jeana shops at a different store and buys several pairs of uniform pants for $18.95 each, plus a sweater for $18.

The variable <em>x</em> is the number of pairs of pants.

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The total cost function for Jeana will be:

TC_{J}=18.95\cdot x+18

Consider that both pay the same total cost for their purchases.

Compute the value of <em>x</em> as follows:

            TC_{K}=TC_{J}

17.95\cdot x+24=18.95\cdot x+18\\\\18.95\cdot x-17.95\cdot x=24-18\\\\x=6

Thus, if both Kelsey and Jeana purchase 6 pairs of uniform pants then they would pay the same amount for their purchases.

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