1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
never [62]
3 years ago
10

How many phone numbers are possible in the (770) area code if: For the form ABC-XXXX, A is restricted to numbers 2-9. B, C, and

X can be any digit 0-9. Also, the number 867-5309 is not used.
a. 6,999,999 c.7,999,999
b. 7,000,000 d.8,000,000
Mathematics
1 answer:
weqwewe [10]3 years ago
6 0

Answer:

c.7,999,999

Step-by-step explanation:

The phone number is of the form ABC - XXXX

A can be any number from 2 - 9. This means number of possible values for A are 8.

The rest of the places B,C and X can be any digit from 0 - 9. This means there are 10 possible values for each of these.

Since, value to A can be assigned in 8 ways, and to the rest of the 6 positions in 10 ways, according to the fundamental rule of counting, the total number of possible phone numbers that can be formed will be equal to the product of all the individual ways:

Total possible phone numbers = 8 x 10 x 10 x 10 x 10 x 10 x 10

Since, 1 of the given number: 867-5309 is not used, the total possible phone numbers will be:

Total possible phone numbers = 8 \times 10^{6} - 1 = 7999999

Hence, option C: 7,999,999 give the correct answer.

You might be interested in
Corresponding angles and interior angles can never have equal angle
musickatia [10]

Answer:

true

Step-by-step explanation:

5 0
2 years ago
A rectangular bin has a perimeter of 36 inches. The length of the bin is twice the width. Write and solve an equation to determi
bekas [8.4K]
2x + 4x = y
x=6
2(6)+4(6) = 36 sq in.
3 0
3 years ago
What is larger 0.717 or 0.759
KIM [24]

Answer:

0.717

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Help me please (asap)
mojhsa [17]

The correct answers are: True and B

5 0
3 years ago
Read 2 more answers
A local hamburger shop sold a combined total of
Brilliant_brown [7]
640 u can thank me later
6 0
2 years ago
Other questions:
  • Which expression is equivalent to 20-4x/4 <br><br>a. 5-x<br>b. 5-4x<br>c. 20-x<br>d. 80-16x
    7·2 answers
  • Mom pays $84 for 42 TV channels. What is
    14·2 answers
  • Use the distributive property to simplify the expression: -4(3x-2)+5
    15·1 answer
  • Two car rental companies charge an initial rental fee plus a fee per day. The table shows the total costs of renting a car for x
    11·1 answer
  • What is the range of possible sizes for side x?<br><br><br> 8.8
    12·1 answer
  • PLZ HELP PLZ 100 POINTS SO IMPORTANT BRAINLIEST
    12·1 answer
  • What is the area of 4 1/2 feet wide and 6 1/2 feet long
    12·1 answer
  • HURRY PLS!!!!!!!!!!!!!<br> !!!!!!!!!!!!!!!!!
    15·1 answer
  • What does 2 1/4 round to?
    9·2 answers
  • Use the table to solve the inequality x−5≥7.
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!