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2 years ago

15

What could be concluded if the relative frequency of an event is equal to 1?

1 answer:

liubo4ka [24]2 years ago

8 0

What could be concluded if the relative frequency of an event is equal to 1?

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What are the values of a and b?

ivann1987 [24]

Answer:

<h2>a = 400/21, b = 580/21</h2>

Step-by-step explanation:

Small triangles are similar. Therefore, the sides are proportional

$\dfrac{a}{20}=\dfrac{20}{21}$ <em>cross multiply</em>

$21a=(20)(20)$ <em>divide both sides by 21</em>

$a=\dfrac{400}{21}$

For b, we can use the Pythagorean theorem:

$b^2=\left(\dfrac{400}{21}\right)^2+20^2\\\\b^2=\dfrac{160000}{441}+400\\\\b^2=\dfrac{160000}{441}+\dfrac{176400}{441}\\\\b^2=\dfrac{336400}{441}\to b=\sqrt{\dfrac{336400}{441}}\\\\b=\dfrac{\sqrt{336400}}{\sqrt{441}}\\\\b=\dfrac{580}{21}$

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3 years ago

45 x 3.5 please explain

Alinara [238K]

Answer:

157.5

Step-by-step explanation:

Try like this:

45 times 3.5

8 0

2 years ago

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Help me solve the question

Svetach [21]

Answer:

50.264 grams -> 50.2

Step-by-step explanation:

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2 years ago

X-6 = 10<br> X=<br> Answer here

77julia77 [94]

Answer: x = 16

Step-by-step explanation:

X-6 = 10

X = 10 + 6

X = 16

6 0

3 years ago

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Find the number of roots for the following equation. 9x5 + 12x4 – x2 + 8x + 4=0

skad [1K]

Answer:

5 roots

Step-by-step explanation:

Given

$9x^5 + 12x^4 - x^2 + 8x + 4 = 0$

Required

The number of roots

The degree of a polynomial represents the number of roots.

In the given equation, the degree of the polynomial is 5.

<em></em>

<em>Hence, the number of roots is 5</em>

8 0

2 years ago