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3 years ago

You want to invest in companies belonging to Gispa Group of

Mathematics

1 answer:

Leviafan [203]3 years ago

4 0

Answer:

1.2803

Step-by-step explanation:

According to the Question,

Given That, You want to invest in companies belonging to Gispa Group of 1 Companies, Inc. so you did some research and found out that companies belonging to this group have an average gain of 0.8 percent and a standard deviation of 0.7 percent.

And, a positive percent (gain) means profit and a negative percent means a loss. If you choose 20 companies.

Therefore, We have Average Gain(ц) = 0.8%

Standard deviation(σ) = 0.7%

Number of Companies(n) = 20

So, the probability that the companies are gaining more than 1 percent is

$X_{i}$ = (σ² × n) / ц ⇒ (0.7²×20) / (0.8*10) = 1.2803

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Natali5045456 [20]

Answer:

The table is show clearly in the figure attached.

P(boy if favourite activity is swimming) = 8/17 = 0.47

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P(girl if favourite activity is reading) = 4/6 = 0.67

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3 years ago

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frutty [35]

The correct answer would be $\frac{-5 +/- \sqrt{13} }{2}$

In order to solve for this you must first get the equation equal to 0.

<span>x^2=-5x-3 ----> add 5x to both sides.
x^2 + 5x = -3 ----> add 3 to both sides.
x^2 + 5x + 3 = 0

Now knowing this we can use the coefficients of each one in descending order of power as a, b and c.

a = 1 (because it is the coefficient to x^2)
b = 5</span> (because it is the coefficient to x)
c = 3 (because it is the end number)

Now we can plug these values into the quadratic equation.

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$\frac{-5 +/- \sqrt{5^{2} - 4(3)(1) } }{2(1)}$

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3 years ago

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White raven [17]

Answer:

Step-by-step explanation:

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Liono4ka [1.6K]

Answer:

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Step-by-step explanation:

Area formulas:

Area of a right triangle: a × b ÷ 2

Area of rectangle: length × width

-----------------------------------------------------------------------------------------------------------------

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There are two right triangles with legs of 6 and 8.

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Step-by-step explanation:

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2 years ago