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TiliK225 [7]
3 years ago
10

Please Help!!!!! Trina has two spinners. One spinner has 4 equal sections that are numbered 1 through 4. The other spinner has 5

equal sections that are numbered 1 through 5. Trina spins both spinners at the same time.
The random variable X is the sum of the numbers on which the spinners land. What is P(5≤X≤8) ?  

Enter your answer, in simplest fraction form, in the box
Mathematics
2 answers:
RSB [31]3 years ago
7 0

Given:

Spinner 1 = 1, Spinner 2 = 4,5 <span>
Spinner 1 = 2, Spinner 2 = 3,4,5 
Spinner 1 = 3, Spinner 2 = 2,3,4,5 
Spinner 1 = 4, Spinner 2 = 1,2,3,4 

</span>

There are possibly 13 outcomes.<span>

</span>

<span>
<span>P(5≤X≤8) = 13/(4*5) = 13/20</span></span>

LuckyWell [14K]3 years ago
5 0

Answer:

13/20

<em>This is the correct answer! Good luck! </em>

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Answer:

Option C is correct i.e. 2.

Step-by-step explanation:

Given the function is f(x) = x² +8x -2.

We can compare it with general quadratic expression i.e. ax² +bx +c.

Then a = 1, b = 8, c = -2.

We can find the number of real root by finding discriminant of the equation ax² +bx +c =0 as follows:-

D = b² -4ac

D = 8² -4*1*-2

D = 64 +8

D = 72.

When D is a positive value, then we have two real roots of the equation.

Hence, option C is correct i.e. 2.

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Answer:

\bf x_1 = 2\\x_2 = 4\\x_3=6\\x_4=8

Step-by-step explanation:

The given interval : x = 0 to x = 10

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\text{Now, each }x_i \text{ is midpoint and endpoint of the five equal intervals}

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\textbf{Length of each interval = }\frac{10}{5}

\textbf{Therefore, }\bf x_1 = 0 + 2 = 2\\x_2 = 2 +2 =4\\x_3=4+2=6\\x_4=6+2=8

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qaws [65]

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Step-by-step explanation:

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