All categories

4 years ago

PLZ HELP You roll a number cube twice. What is the probability of rolling a 2 first and then rolling an odd number?

Mathematics

1 answer:

nordsb [41]4 years ago

4 0

Answer:

1/12

Step-by-step explanation:

The probability on an equal dice is 1/6

There is only one 2 on a dice; therefore, the probability of rolling a 2 is 1/6.

There three odd numbers on a dice; therefore, the probability of rolling an odd number is 3/6 = 1/2.

Because the events are dependent on each other (you HAVE to roll a 2 first AND you HAVE to roll an odd number after), multiply them.

1/6 * 3/6 = 1/12

You might be interested in

50 POINTS! IM SO CONFUSED I'LL MARK BRAINLIEST!!!!

yan [13]

The function of x is $\bold{\frac{-1x}{2}}$ .

<u>SOLUTION:</u>

Given that, we have to write a linear function f with function of (-4) =2 and function of 6=(−3).

Now, let the linear function be $\text{function of x}=a x+b$

Then, function of -4 = $a(-4)+b \rightarrow 2=-4 a+b \rightarrow b=2+4a \rightarrow (1)$

And, function of 6 = $a(6)+b \rightarrow-3=6 a+b \rightarrow b=-3-6a \rightarrow (2)$

On equating (1) and (2) to find the value of a,

$2+4a=-3-6a$

On grouping the common terms,

$4a+6a=-3-2 \rightarrow 10a=-5 \rightarrow a=\frac{-5}{10}$

$\Rightarrow a=\frac{-1}{2} \rightarrow (3)$

On substituting the value of (3) in (1) we get,

$b=2+4a \rightarrow b=2+4\times\frac{-1}{2} \rightarrow b=2+\frac{-4}{2} \rightarrow b=2+(-2)$

$\Rightarrow b=0$

So, the function of x = $\frac{-1x}{2}+0$

4 0

3 years ago

Please help me please please please please please help me I need your help please I’m begging you so much I need your help plz h

Step2247 [10]

Answer:

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Trevon's school is selling tickets to a musical. On the first day, the school sold 3 senior tickets and 2 child tickets resultin

xz_007 [3.2K]

3s+2c=37
12s+7c=134
To solve we need to multiply the first equation by negative 4
-4(3s+2c=37)
-12s+-8c=-148
12s+7c=134
Cross out the 12s on the two above equations.
-c=-14
c=14
Now let’s plug in value c to first original equation :
3s +2(14)=37
3s+28=37
3s=9
s=3
To recap: senior tickets cost $3 each; children tickets cost $14 each

5 0

3 years ago

Given the following, use a Pythagorean identity to find sin() if is in quadrant II.

Talja [164]

Answer:

$\sin(\theta) = \frac{2\sqrt{6}}{5}$

Step-by-step explanation:

$\theta \in [\frac{\pi}{2}; \pi]\\cos(\theta) = \frac{-1}{5}$

By the Fundamental Theorem of Trigonometry => $\sin(\theta) = \pm \sqrt{(1-\cos^2(\theta))}$

The positive version for $\theta \in [0, \pi]$ . And the negative for $\theta \in (\pi; 2\pi)$

Meaning sin is positive in the problem => $\sin(\theta) = \sqrt{1 - \cos^2(\theta)} = \sqrt{1-\frac{1}{25}} = \sqrt{\frac{24}{25}} = \frac{2\sqrt{6}}{5}$

5 0

3 years ago

Given: x+y=10 if x=-21, what is y?

zimovet [89]

Answer: y = 31

Step-by-step explanation: all you need to do is plug in the x

since x = -21 we can put: -21 + y = 10

now we add 21 to both sides giving us: y = 31

4 0

3 years ago

Read 2 more answers