Answer: The solution set is
Step-by-step explanation:
The product of 7 and x is .
3 more than the product of 7 and x is .
We were given that, the expression is less than 26.
This implies that,
.
We group like terms to obtain,
we now divide through by 7 to obtain,
We finally write this as a mixed number to obtain,
In this problem the big angle will be equal to two times the smaller angle so the correct expression is:
Now we can rewrite the equation so:
Answer:
b. 610, 50
Step-by-step explanation:
The mean score is the sum of all scores divided by the number of tests.
So if you increase the grade on each test, the mean will increase.
The standard deviation is the square root of the sum of the power of 2 of all scores subtracted by the mean(that is, the distance between each score and the mean) and divided by the number of tests.
As you increase each score by 10, the mean will change by 10. However, the distance between each score and the mean will stay the same, which means that the standard deviations remains unchanged.
In this problem, we have that:
Mean = 600
Standard deviation = 50
Scores increased by 10
So
Mean = 610
Standard deviation = 50
So the correct answer is:
b. 610, 50
The boy have to wear 4 from one of each to school.
Answer:
25, 24, 23, 22
Step-by-step explanation: