Answer:
The number of 3-digit phone prefixes that do not start with 0 or 1, but contain 0 or 1 as the middle digit is 160.
Step-by-step explanation:
The phone prefix for any area is of the form <u>X</u> <u>X</u> <u>X</u>.
These prefixes can take values from 0 to 9.
The condition to create a phone prefix is:
- The first digit cannot be 0 or 1
- The middle digit is either 0 or 1.
The possible number of ways to fill the first place is 8 since 0 or 1 cannot be the first digit.
The possible number of ways to fill the second place is 2 since the middle digit can be occupied by either 0 or 1.
The possible number of ways to fill the last place is 10 since there are no condition applied to the last digit.
Then the number of phone prefixes that can be formed is = 
Thus, the possible number of phone prefixes possible is 160.
The answer is 5x/2 because all you have to do is add 3x + 2x too make 5x and take 4-2 which is 2 and since it can't be simplified any more, just do 5x/2. Hope this helped! :)
Question D:
The terms in the expression are '60a' and '30c'
Question E:
Factors of 60a could be
2 × 30 × a
3 × 20 × a
4 × 15 × a
5 × 12 × a
6 × 10 × a
Question F
Factors of 30c could be
2 × 15 × c
3 × 10 × c
5 × 6 × c
Question G
Coefficient of 60a is '60'
Coefficient of 30c is '30'
Question H
The meaning of the two terms
Term '60a' means multiply the value of 'a' by 60 to find the total cost for 'a' number of adults
Term '30c' means multiply the value of 'c' by 30 to find the total cost for 'c' number of children
Answer:
OK so you didnt put which numbers, but here is how you solve for area. Say if the legnth is 4 and the widght is 6. you have to do legnth times witgh, it this case 6x4 area is 24. Lxw=a
Step-by-step explanation:
Apples cost $3.60 for 3 pounds . The rate can be calculated as follows
The amount of pounds you can buy for $8.40 can be computed below
