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dmitriy555 [2]
3 years ago
13

P(A)=0.22 and P(B)=0.46 Find P(A OR B)

Mathematics
1 answer:
morpeh [17]3 years ago
4 0

In general, the probability of a disjunction is

P(A \lor B) = P(A)+P(B)-P(A\cap B)

In this case, A and B are mutually exclusive, so P(A\cap B)=0

This simplifies the formula to

P(A \lor B) = P(A)+P(B) = 0.22+0.46 = 0.68

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JulijaS [17]
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8 0
3 years ago
Cammie can mow 1/2 acre in 25 minutes. If her rate is constant, Cammie says she can mow 1 1/4 acres in one hour. Is Cammie corre
Sergeu [11.5K]

Answer: No, Cammie is not correct. She can mow  1\frac{1}{5}\ acres in one hour (See explanation).

Step-by-step explanation:

Convert the mixed number to an impoper fraction:

1. Multiply the whole number part by the denominator of the fraction and add the product to the numerator.

2. The denominator does not change.

Then:

1\frac{1}{4}=\frac{(1*4)+1}{4}=\frac{5}{4}

Let be "x" the acres Cammie can mow in one hour.

You know that she can mow \frac{1}{2}\ acre in 25 minutes, then you can set up the following proportion (Remember that 1 hour has 60 minutes):

\frac{\frac{1}{2}}{25}=\frac{x}{60}

Solving for "x", you get:

\frac{\frac{1}{2}}{25}=\frac{x}{60}\\\\(60)(\frac{1}{50})=x\\\\x=\frac{6}{5}

Convert from improper fraction to mixed number:

1. When you divide 6 by 5, the quotient is 1. This will be the whole number part.

2. The remainder is 1. This will be the numerator.

3. The denominator does not change.

Then:

x=1\frac{1}{5}

Therefore, she can mow  1\frac{1}{5}\ acres in one hour.

3 0
3 years ago
What is the absolute value of | 56-12 |?
muminat

Answer: 44! Hope this helps :D

Step-by-step explanation:

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Answer:

Step-by-step explanation: y=1.5(3)-2

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3 years ago
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Can someone help me
9966 [12]

Answer:

no

Step-by-step explanation:

its confusing

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