Answer:
x = 2.2
Step-by-step explanation:
-15 + 12x = 5x + 7 - 3x
Combine like terms
-15 +12x = 2x +7
Subtract 2x from each side
-15 +12x -2x = 2x-2x +7
-15 +10x = 7
Add 15 from each side
-15+15 +10x = 7+15
10x = 22
Divide each side by 10
10x/10 = 22/10
x = 2.2
A score of 85 would be 1 standard deviation from the mean, 74. Using the 68-95-99.7 rule, we know that 68% of normally distributed data falls within 1 standard deviation of the mean. This means that 100%-68% = 32% of the data is either higher or lower. 32/2 = 16% of the data will be higher than 1 standard deviation from the mean and 16% of the data will be lower than 1 standard deviation from the mean. This means that 16% of the graduating seniors should have a score above 85%.
Ana stated with $150 in the bank.
She adds $25.75 to the account each week.
The expression 150+4x-25.75 represents the total amount in the bank after 4 weeks.
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Answer:
8:30
Step-by-step explanation:
Because 6 ÷ 4 is 1.5. also know as 1.5hrs before bedtime.
The Correct Answer is C)3 Just divide 6/2 Then you end up with 3
