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Vedmedyk [2.9K]

3 years ago

4

These letter cards are shuffled and put into a bag.

1 answer:

sergiy2304 [10]3 years ago

8 0

It would be 1/4 because there are 2 A out of 8 letters. So you have 2/8 then you see if 2 can go into 8 and it can 4 times so the 2 changes to a 1 and the 8 changes to a 4

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13. Find the exact value of sin 30 ° - sin 45 ° cos 45 ° .<br> a. 0 <br> b. 1/2 <br> c. 1 <br> d. 2

Marianna [84]

$sin30^o-sin45^ocos45^o\\\\sin30^o=\frac{1}{2}\\\\sin45^o=cos45^o=\frac{\sqrt2}{2}\\\\sin30^o-sin45^ocos45^o=\frac{1}{2}-\frac{\sqrt2}{2}\cdot\frac{\sqrt2}{2}=\frac{1}{2}-\frac{2}{4}=\frac{1}{2}-\frac{1}{2}=0\\\\Answer:a.$

4 0

4 years ago

Read 2 more answers

Color blindness is an inherited characteristic that is more common in males than females. Let F represent female, and C represen

malfutka [58]

Answer:

0.513 = 51.3% probability of being a female.

Step-by-step explanation:

We are given the following formula:

$P(F \cup C) = P(F) + P(C) - P(F \cap C)$

In which:

Event F: Female

Event C: Red-green color blindness.

Probability of a Female

We have to find P(F), which is given by:

$P(F) = P(F \cup C) + P(F \cap C) - P(C)$

We are given by:

$P(C) = 0.039, P(F \cap C) = 0.004, P(F \cup C) = 0.548$

So

$P(F) = P(F \cup C) + P(F \cap C) - P(C) = 0.548 + 0.004 - 0.039 = 0.513$

0.513 = 51.3% probability of being a female.

5 0

3 years ago

your cell phone company started a rewards club . for every three texts sent, you get 15 points. you need 1800 points for a price

yanalaym [24]

Answer:

360 texts

Step-by-step explanation:

You get 15 points for each 3 texts.

That means you get 5 points per text.

1800/5 = 360

Answer: You need to send 360 texts.

8 0

4 years ago

Please someone help me I don’t understand please please help

Lisa [10]

Answer:

604

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Jen Butler has been pricing Speed-Pass train fares for a group trip to New York. Three adults and four children must pay $ 136.

vagabundo [1.1K]

Answer:

A=20 C=19

Step-by-step explanation:

3A+4C=136

2A+3C=97

4 0

3 years ago