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mixer [17]
3 years ago
10

What is the mass number of an atom with 25 protons, 25 electrons and 34 neutrons?

Mathematics
1 answer:
ki77a [65]3 years ago
4 0
To find the atomic mass of an element you add the protons and neutrons=59
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Answer:

C: People who came to California looking for gold in 1849.

Step-by-step explanation:

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How do you 20 out of 40 in a percentage
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\dfrac{20}{40}\cdot100\%=\dfrac{1}{2}\cdot100\%=50\%
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A store specializing in mountain bikes is to open in one of two malls. If the first mall is​ selected, the store anticipates a y
Natasha_Volkova [10]

Answer:

a) Expected profit = $300,000

b) Expected profit = $405,000

c) The second mall should be chosen in order to maximize the expected profit

Step-by-step explanation:

If the first mall is selected:

Anticipated profit on success = $900,000

Anticipated loss on failure = $300,000

Probability of success, p = 1/2

Probability of failure, q = 1-p = 1-1/2

q = 1/2

If the second mall is selected:

Anticipated profit on success = $600,000

Anticipated loss on failure = $180,000

Probability of success, p = 3/4

Probability of failure, q = 1-p = 1-3/4

q = 1/4

a) Expected profit for the first mall:

Expected profit = (p*profit) - (q*loss)

Expected profit =(1/2 * 900000) - (1/2 * 300000)

Expected profit = $300,000

b)  Expected profit for the second mall:

Expected profit = (p*profit) - (q*loss)

Expected profit =(3/4 * 600000) - (1/4 * 180000)

Expected profit = $405,000

c) The second mall should be chosen in order to maximize the expected profit

4 0
3 years ago
Read 2 more answers
The figure below has a height of 18 inches and a volume of 864 cubic inches. What is the area of the base of the figure?
kodGreya [7K]

Answer:

48 sq. in.

Step-by-step explanation:

Different figures (rectangular prisms, cylinders, triangular prisms etc.) have different volume formula. But what formula of "volume" do they come from??

It is:

Volume = Area of Base * Height

<u>Note:</u> we didn't specify any Area of Base formula because it depends. If base is circle, the area is different than if base was suppose a square. But this is the general formula of volume.

Now,

Given

Height = 18 inch

Volume = 864 cubic inch

We can write:

Volume = Area of Base * Height

864 = Area of Base * 18

Thus,

Area of Base = 864/18 = <u>48 sq. in.</u>

<u>This is what we are wanting, "area of base" (irrespective of the shape).</u>  

6 0
4 years ago
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Probabilities where the focus is on just one group of objects and a random sample is taken from that group alone are called​ wha
JulsSmile [24]
I think the answer would be conditional probability. It is a type of probability that the focus is on a certain group and taking a sample from it randomly. It is the probability of a certain event basing on the occurrence of an event that happens previously.<span />
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