Ella had softball and dance practice for 4 weeks. She practiced softball 2 hours a week and dance 1 hour a week. Which operation
2 answers:
Answer:
The correct option is D) multiplication and addition
Step-by-step explanation:
Consider the provided information.
Ella had softball and dance practice for 4 weeks. She practiced softball 2 hours a week and dance 1 hour a week.
The number of hours she spend in 4 weeks for softball are:
The number of hours she spend in 4 weeks for dance are:
The total number of hours Ella practiced softball and dance are:
The operations that can be used to find the total number of hours are multiplication and addition.
Hence, the correct option is D) multiplication and addition
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The correct answer is option B which is P ( A|B) will be ( 4 / 9 ).
<h3>What is probability?</h3>Probability is defined as the ratio of the number of favorable outcomes to the total number of outcomes in other words the probability is the number that shows the happening of the event.
Given that:-
- A locker combination consists of two nonzero digits, and each combination consists of different digits. Event A is defined as choosing an odd number as the first digit, and event B is defined as choosing an odd number as the second digit.
The total sample will have 9 numbers
S = { 1,2,3,4,5,6,7,8,9} = 9
Even Number = { 2,4,6,8} = 4
Odd Number = { 1,3,5,7,9} = 5
P ( A ) = ( 4 / 9 )
P ( B ) = ( 5 / 9 )
The probability will be calculated as:-
P( A:B ) =
P( A:B ) =
P( A:B ) = 4 / 9
Therefore the correct answer is option B which is P ( A|B) will be ( 4 / 9 ).
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