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Mrrafil [7]
3 years ago
11

)) You pick a card at random. 1 2 3 4 5 6 7 7. What is P(even)? Write your answer as a fraction or whole number. can I get some

help on this
​
Mathematics
1 answer:
Yuri [45]3 years ago
6 0

Answer:

probability of even numbers is 3/8

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Verify sin2θ/1+cos2θ =tanθ
Andrej [43]

Answer:

LHS.= Sin 2x /( 1 + cos2x )

We have , sin 2x = 2 sinx•cosx

And. cos2x = 2cos^2 x - 1

i.e . 1+ cosx 2x = 2cos^2x

Putting the above results in the LHSwe get,

Sin2x/ ( 1+ cos2x ) =2 sinx•cosx/2cos^2x

=sinx / cosx

= Tanx

.•. sin2x/(1 + cos2x)= tanx

Step-by-step explanation:

4 0
3 years ago
Based on data collected 5 years ago, a hotel expects that 24% of all guests will request smoking rooms. The hotel suspects that
9966 [12]

Answer:

The calculated value Z = 2.3084 > 1.96 at 5% level of significance

Null hypothesis is rejected

Alternative hypothesis is accepted

The hotel does not expects that 24% of all guests will request smoking rooms

Step-by-step explanation:

<u><em>Step(i):</em></u>-

Given the hotel takes a random sample of 223 guests. Out of this sample, 39 guests requested smoking rooms.

Sample proportion

                          p = x/n = 39/223 = 0.174

Given Population proportion 'P' = 0.24

Given random sample size 'n' = 223

Level of significance ∝ =0.05

The critical value Z₀.₀₅ = 1.96

<u><em>Null Hypothesis</em></u> (H₀) : P=0.24

<u><em>Alternative Hypothesis</em></u> (H₁) : P≠ 0.24

<u><em>Step(ii)</em></u>:-

<em>Test statistic </em>

            Z = \frac{p-P}{\sqrt{\frac{PQ}{n} } }

           Z = \frac{0.174-0.24}{\sqrt{\frac{0.24 X 0.76}{223} } }

           |Z| = | -2.3084|= 2.3084

The calculated value Z = 2.3084 > 1.96 at 5% level of significance

Null hypothesis is rejected

Alternative hypothesis is accepted

The hotel does not expects that 24% of all guests will request smoking rooms

7 0
3 years ago
How do I express 540 as a product of prime factors
aksik [14]
540=
54*10=
6*9*2*5=
2*3*3*3*2*5=
2*2*3*3*3*5 or in exponential form
(2²)(3³)(5)
6 0
4 years ago
Read 2 more answers
Please I want an before 2:00
Snezhnost [94]

Here's a photo of the solution. Hope it helps and please give brainlist!

6 0
3 years ago
En un partido de baloncesto, los máximos anotadores han sido Juan, Jorge y Mario. Juan ha logrado 19 puntos. Jorge 5 puntos más
Fantom [35]

Answer:

31

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
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