60*7=420
70+60+65+40+78+62=375
420-375=45
You can only be online for 45 minutes on the seventh day to reach your goal
Answer: 100
Step-by-step explanation:
Sub in 5 for b in the expression

You must do the exponent first as it comes before multiplication in the order of operations

Now multiply

14. Range=22 Mean= 31.2
15. Range=33 Mean= 88.2
16. Range= 81 Mean= 161.3
To find range you take the smallest number and the largest number and subtract them. To find mean you add all of the totals together and then divide by how many numbers are given.
Answer:
Below.
Step-by-step explanation:
The number of combinations of 7 from 32 = 32! / 7! (32-7)!
= 3365856
So it is 1/ 3365856 = 0.000000297
or about 3 in 10,000,000.
Answer:
13 books
Step-by-step explanation:
Total cost without the discount = $58 + $7 = $65
Cost of one book = $5
Let the number of books be n
5n = 65
n = 65/5
n = 13