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gogolik [260]
4 years ago
7

An article suggests the lognormal distribution as a model for SO2 concentration above a certain forest. Suppose the parameter va

lues are μ = 1.8 and σ = 0.9. (a) What are the mean value and standard deviation of concentration? (Round your answers to three decimal places.) mean standard deviation (b) What is the probability that concentration is at most 10? Between 5 and 10? (Round your answers to four decimal places.) at most 10 between 5 and 10
Mathematics
1 answer:
notsponge [240]4 years ago
5 0

Answer:

Step-by-step explanation:

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Julie has four times as many pairs of shoes as her brother. Together they have 15 pairs of shoes. How many pairs of shoes do the
krek1111 [17]

Answer:

60 pairs of shoes

Step-by-step explanation:

To find the answer, multiply 4x15. The words four times as many mean to do the operation of multiplication. 4x15= 60 So finally, each have 60 pairs of shoes.

<em>i</em><em> </em><em>hope</em><em> </em><em>this</em><em> </em><em>helped</em><em>:</em><em>)</em>

5 0
3 years ago
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Nine less than a number is 9. Find the number.
astraxan [27]
I'm guessing it is 18. 18 decreased by nine equals nine so to me it makes sense.
3 0
4 years ago
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Find the distance between (3,-3) and (2,7)
yarga [219]

Answer:

\sqrt{101} = D

Step-by-step explanation:

Method #1

We can draw a <em>right triangle</em> on the graph upon where the points are located and use the Pythagorean Theorem:

{a}^{2} + {b}^{2} = {c}^{2}

{1}^{2} + {10}^{2} = {c}^{2}

1 + 100 = {c}^{2}

101 = {c}^{2}

\sqrt{101} = c

* Whenever we talk about distance, we ONLY want the NON-NEGATIVE root.

_______________________________________________

Method #2

Or, we can use the Distance Formula:

\sqrt{[-x_1 + x_2]^{2} + [-y_1 + y_2]^{2}} = D

[2, 7] [3, −3]

\sqrt{[-3 + 2]^{2} + [3 + 7]^{2}} = D

\sqrt{[-1]^{2} + 10^{2}} = D

\sqrt{1 + 100} = D

\sqrt{101} = D

** You see? It does not matter which method you choose, as long as you are doing the work correctly.

I am delighted to assist you anytime.

5 0
3 years ago
Help me please i’ll rate brainliest
Cloud [144]

Answer:

<em>- 1.568</em>  

Step-by-step explanation:

Let's assume that the base of the given logarithm is 10.

log m = 0.345 ⇒ 10^{0.345} = m

log n = 1.223 ⇒ 10^{1.223} = n

mn = 10^{0.345} × 10^{1.223} = 10^{1.568}

\frac{1}{mn} = 10^{-1.568}

log 10^{-1.568} = - 1.568 × log 10 = <em>- 1.568</em>

5 0
3 years ago
A fair dice is thrown what is the probability that a 6 4or 5 is thrown​
antiseptic1488 [7]

There is a 3/6 or 1/2 chance that a 6, 4, or 5 is thrown. This is because a fair dice has as 6 sides, therefore, as three numbers were listed, there is a 3/6 probability that 6, 4 or 5 will be thrown.

4 0
3 years ago
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