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2 years ago

How to solve probabilities

Mathematics

2 answers:

melomori [17]2 years ago

7 0

The probability of each sample point must be equal to 1/2

valina [46]2 years ago

5 0

You can solve many simple probability problems just by knowing two simple rules:

The probability of any sample point can range from 0 to 1. The sum of probabilities of all sample points in a sample space is equal to 1.

The following sample problems show how to apply these rules to find (1) the probability of a sample point and (2) the probability of an event.

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The probability of choosing an ace from cards is 4/52. What is the probability of not selecting an ace?

motikmotik

Answer:

48/52

Step-by-step explanation:

(total number of cards-4 ace cards)/52

4 0

2 years ago

A recipe for biscuits calls for 1 cups

Svetllana [295]

Answer:

Step-by-step explanation:

1 1/2 × 3 = 4 1/2

.........

5 0

2 years ago

Gas prices in shelby county are at $3.00 per gallon. if a market scientist predicts a 40% increase in the price of gas in the co

aleksley [76]

Answer-

The price of gas will be $4.2

Solution-

Gas prices in shelby county = $3.00 per gallon

Market scientist predicts a 40% increase in the price of gas in the coming month.

So the new price will be,

$=3+(3\times \dfrac{40}{100})$

$=3+(3\times 0.4)$

$=3+1.2$

$=4.2$

Therefore, the price of gas will be $4.2

5 0

2 years ago

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Choose the function rule that represents the sentence:

almond37 [142]

6n +5=12. The answer is a

4 0

2 years ago

Rosena bought an 8 pack of donuts to share with her friend at school. The donuts cost $28.00 all together. What is the unit rate

Ne4ueva [31]

Answer:

$3.50/donut

Step-by-step explanation:

Since Rosena bought an 8-pack of donuts for $28.00, we can say that the price of $28.00 corresponds with this pack.

The unit rate represents the price per donut, assuming a constant proportion.

The pack that Rosena bought contains 8 donuts. Therefore, to find the price of one donut, divide the price that corresponds with the 8-donut pack by 8, because $8\div 8=1$ .

The price of the 8-pack of donuts was $\$28.00$ . Diving by 8, we have:

$\frac{\$28.00}{8}=\boxed{\$3.50}$

Therefore, the unit rate for the donuts is $3.50/donut.

4 0

2 years ago

Read 2 more answers