5 multiplied by (2 multiplied by 2) multiplied by 3 multiplied by 2 = 120
Sorry that I'm writing the word multiplied but I don't have the sign on my keyboard. :D
2(x-3)=2x-6 then add 4 = 2x-2
Answer:
15 times
Step-by-step explanation:
To find the expected count you have to multiply the probability of the favorable event with the number of repetitions/rolls. For a fair dice, every number will have the same probability to occur. The dice have number 1 to 6 which mean there are 3 odd numbers (2, 4, 6) out of 6 possible number.
Then the probability for odd number will be: 3/6= 1/2
The expected count of odd numbers in 30 rolls will be= 1/2 * 30 =15 times.
<h3>
Answer: Choice B) 122%</h3>
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Work Shown:
A = 1250 is the initial amount
B = 2780 is the new amount
C = percent change = unknown for now
The formula to use is
C = [ (B-A)/A ] * 100
to calculate the percent change.
Basically we calculate the change (B-A) first and then divide that over the original amount A to compute the decimal form of the answer, which is then converted over to percentage form. The "100" tacked on at the end is what converts from decimal to percent form.
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C = [ (B-A)/A ] * 100
C = [ (2780 - 1250)/1250 ] * 100
C = (1530/1250)*100
C = 1.224 * 100
C = 122.4%
C = 122%
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The positive C value indicates we have a percent increase. If C were negative, then we'd have a percent decrease.
