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LiRa [457]
1 year ago
12

A fair coin is tossed 5 times in a row. The exact probability of the coin landing heads exactly 2 times is?

Mathematics
2 answers:
makkiz [27]1 year ago
8 0
We can do this using the binomial probability distribution:

5C2 * (1/2)^2 * (1/2)^3 = 10 * 1/32

= 5/16
SpyIntel [72]1 year ago
8 0
The coin has to sides, so there are 2 possible choices given each of the 5 times. 2(5)=10. then, you divide 2 by that number (2/10), which is equal to 1/5
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Effectus [21]

Answer:

Option C

10%

Step-by-step explanation:

Given information

Cost of investment=$20000

Selling price=$22000

Profit=Selling price-Cost of investment=22000-20000=2000

Return on investment=profit/cost of investment

RoI=\frac {2000\times 100}{20000}=10%

6 0
2 years ago
What integer describes 50 feet below sea level?
alexdok [17]

-50 since an integer is the opposite of a whole number positive or negative

8 0
1 year ago
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Which is the graph of g(x) = (0.5)x + 3 – 4? On a coordinate plane, an exponential function decreases in quadrant 2 and has a ho
Mashcka [7]

Answer:

The graph will be an exponential function that crosses the y-axis at about (0, -4).

Step-by-step explanation:

g(x) = (0.5)^{x + 3} - 4

That means that when x = 0...

g(0) = (0.5)^{0 + 3} - 4

g(0) = (0.5)^{3} - 4

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So, the graph will be an exponential function that crosses the y-axis at about (0, -4).

Hope this helps!

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1 year ago
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In Virginia, 120 lame dogs were tested for arthritis and Lyme disease. The results showed that 42 of the dogs had Lyme disease,
miskamm [114]

Answer:

The number of dogs that had both Lyme disease and arthritis is 18

Step-by-step explanation:

Let x represent dogs that have both Lyme disease and arthritis

Dog with only Lyme disease = 42 - x

Dog with only arthritis = 96 - x

The sum of the 3 category should give 120

x + (42 - x) + (96 - x) = 120

Collect like terms and solve

x - x - x + 42 + 96 = 120

-x + 138 = 120

138 - 120 = x

x = 18

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Dog with only arthritis = 96 - x = 96 - 18 = 78

Therefore, the number of dogs with both Lyme disease and anthritis is 18.

4 0
2 years ago
during the summer winnie delivers flowers and bob babysits for neighbors to show their earnings winnie makes a table which state
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1 year ago
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