3 years ago

How can i find the probabilities in questions like these (there are two different probabilities???)

1 answer:

Nutka1998 [239]3 years ago

4 0

Find the probability of picking a red marble. This would be 12 out of 20. The, take 1 away from the denominator because you already picked a marble. So then find the probability of picking white marble, which is 8 out of 19. The multiply them to get 84 out of 380

You might be interested in

What is the exact value of cos 112.5°?

ikadub [295]

We have 112.5 = 225/2; cos112.5 < 0 because 90 < 112.5 < 180;
cos 112.5 = cos(225/2);
We use the trigonometric formula: cos(x/2) = - $\sqrt{ \frac{1+cosx}{2} }$ ;
Then, cos(225/2) = - $\sqrt{ \frac{1+cos225}{2} }$ ;
We have the formula: cos(270 - x) = -sinx (because cos(a-b) = cosacosb + sinasinb);
Then, cos225 = cos(270-45) = -sin45 = - $\frac{ \sqrt{2} }{2} ;$
Finally, cos112.5 = - $\frac{ \sqrt{2- \sqrt{2} } }{2} ;$

3 0

3 years ago

Angles 1 and 2 are complementary. If ∠1 measures 56°, what is the measure of ∠2?

Monica [59]

18 degrees
Step by step I got it right

4 0

3 years ago

An empty box is shaped like a rectangular prism. the box has a base area of '9/10' square foot and a height of '1/3' foot. How m

maxonik [38]

Answer:3/10

Step-by-step explanation:

9 divided by 3 is 3 so that it

Next to 3/10 the denominator away stays the same,

3 0

2 years ago

Is this always true, sometimes true, or never true?

IRINA_888 [86]

Answer:

This statement is sometimes true

7 0

1 year ago

A sno-cone machine priced at $139 is on sale for 20% off. The sales tax rate is 6.75%. What is the price of the sno-cone machine

trapecia [35]

Answer:

$127.03

Step-by-step explanation:

A snow cone machine price at $139 is on after for 20 off.

The price after discount=139-20=$199

The sale tax rate 6.75%

Price with sales tax=199+(6.75%×199)

=199+(0.0675×199)

= 199+8.03

=$127.03

4 0

2 years ago