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3 years ago

14 is 4 less than three times k

Mathematics

1 answer:

UkoKoshka [18]3 years ago

6 0

14= 3k-4
_ less than _ = -
3* k simplified= 3k

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The average score of all pro golfers for a particular course has a mean of 70 and a standard deviation of 3.0 (Think of these as

bija089 [108]

Answer:

0.477 is the probability that the average score of the 36 golfers was between 70 and 71.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 70

Standard Deviation, σ = 3

Sample size, n = 36

Let the average score of all pro golfers follow a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

P(score of the 36 golfers was between 70 and 71)

$\text{Standard error of sampling} = \displaystyle\frac{\sigma}{\sqrt{n}} = \frac{3}{\sqrt{36}} = \frac{1}{2}$

$P(70 \leq x \leq 71) = P(\displaystyle\frac{70 - 70}{\frac{3}{\sqrt{36}}} \leq z \leq \displaystyle\frac{71-70}{\frac{3}{\sqrt{36}}}) = P(0 \leq z \leq 2)\\\\= P(z \leq 2) - P(z \leq 0)\\= 0.977 - 0.500 = 0.477= 47.7\%$

$P(70 \leq x \leq 71) = 47.7\%$

0.477 is the probability that the average score of the 36 golfers was between 70 and 71.

8 0

4 years ago

a person's rectangular dog pen for his dog must have an area of 300 square feet also the length must be 40 feet longer than the

Tema [17]

The with should be 7.5 feet

4 0

3 years ago

Also can anyone help with these problems too?

d1i1m1o1n [39]

Answer:

6. a

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7. b

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8. d

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9. d

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7 0

3 years ago

X*+5X+6<br> please thanks

Katen [24]

Your answer is going to be 5x^2+6 because if you simplify and do x(5)x +6 it will equal to 5x^2 + 6

Hope this helped!!

7 0

3 years ago

Pascal wanted the area Of the floor to be 36 square Feet and the width still to be 1/4

Gre4nikov [31]

Assuming you mean 1/4 of a foot:

1/4L=36
L=144
width=1/4, length= 144

If you meant the width to be 1/4 of the length, then:

w*1/4w=36
width= 12, length=3

3 0

3 years ago