Answer:
62 minutes.
Step-by-step explanation:
To find the mean, you need to <u>add</u> together all of your values (the minutes) and <u>divide</u> them by the number of values (how many sets of minutes given).
So, choosing to add 62 minutes:
38 + 40 + 40 + 42 + 43 + 50 + 62 = 315
There are 7 sets of minutes in total, so we then divide 315 by 7.
315/7 = 45 minutes
Therefore, running 62 minutes on the seventh day would cause you to run a mean of 45 minutes per day for the week.
For this item, we represent the number of cars that the salesman has left to sell by the variable x. The sum of this variable and 68 should not be more than (or be at least) 125. Mathematically expressing the statement above,
x + 68 ≤ 125
The answer is 394
but you need to figure with the distributive property to so your answer would look like this
(5 times 100)+ (5 times 90) + (5 times 8)
Do you want to get the variable by itself.
In order to do that subtract x on both sides.
-2x+9=-5
Then subtract 9 on both sides
-2x=-14
Divide by -2 on both sides
X=7