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andrew-mc [135]
3 years ago
11

If Kailyn ran 3 miles in 20 minutes, how many miles would she run in 1 hour?

Mathematics
2 answers:
VikaD [51]3 years ago
8 0

Answer:

1 hr =60 mins kailyn ran 9 miles in 1 hour

Step-by-step explanation:

Hope this helps:)

Zielflug [23.3K]3 years ago
6 0

Answer: Convert to a decimal by dividing the numerator by the denominator.

3 miles per minute.

idk if this is gonna help but i hope it does!

ε=ε=ε=(~ ̄▽ ̄)~

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If the heights of 300 students are normally distributed with mean 68.0 inches and standard deviation 3.0 inches, how many studen
Lunna [17]
Given:
μ = 68 in, population mean
σ = 3 in, population standard deviation

Calculate z-scores for the following random variable and determine their probabilities from standard tables.

x = 72 in:
z = (x-μ)/σ = (72-68)/3 = 1.333
P(x) = 0.9088

x = 64 in:
z = (64 -38)/3 = -1.333
P(x) = 0.0912

x = 65 in
z = (65 - 68)/3 = -1
P(x) = 0.1587

x = 71:
z = (71-68)/3 = 1
P(x) = 0.8413

Part (a)
For x > 72 in, obtain
300 - 300*0.9088 = 27.36

Answer: 27

Part (b)
For x ≤ 64 in, obtain
300*0.0912 = 27.36

Answer: 27

Part (c)
For 65 ≤ x ≤ 71, obtain
300*(0.8413 - 0.1587) = 204.78

Answer: 204

Part (d)
For x = 68 in, obtain
z = 0
P(x) = 0.5
The number of students is
300*0.5 = 150

Answer: 150

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3 years ago
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Answer:

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Step-by-step explanation:

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=x^3+2x^2+4x^2+3x+8x+12

=x^3+6x^2+11x+12

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Answer:

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Step-by-step explanation:

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3 years ago
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finlep [7]

Answer:

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IRINA_888 [86]

Answer:

A and C

Step-by-step explanation:

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