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
Sonja [21]
3 years ago
10

Credit cards place a three digit security code on the back of cards. What is the probability that a code starts with the number

7?
Mathematics
1 answer:
yan [13]3 years ago
4 0
<h2>Answer:</h2>

The probability that a code starts with the number 7 is:

                          1/10

<h2>Step-by-step explanation:</h2>

There are total 10 digits:

0   1   2    3    4   5   6   7   8   9

Also, the total number of codes that are possible using these digits are:

                            1000

( Since there are 10 choices for first place, 10 for second and 10 for third as well

Hence, total possibilities are: 10×10×10=1000 )

Also, if the first place of the code is fixed with number 7.

So, we need to chose the digits for second and third place.

Hence, total codes whose first digit is 7 are:

                      100

( Since the choice for first place is fixed and for second and third place we have 10 choices i.e. total such cases are: 1×10×10=100   )

Hence, the probability is calculated as:

            Probability=100/1000

                               =1/10

You might be interested in
Ruby’s market sells smoked meats by the pound. The prices for several different meats are shown in the table.
VladimirAG [237]
1.75 pounds more. Let me know if this helps.
5 0
3 years ago
If A is the midpoint of line segment LH and B is the midpoint of line segment LJ, then what is AH? 20,9,11,33?
Effectus [21]

Answer:

Answer is 33. Got it right in my quiz

Step-by-step explanation:

5 0
3 years ago
Which statement best describes the relationship between forces? (2 points)
GalinKa [24]
I think it's the last one because strong and hold together atoms and weak nf break them, showing a relationship
6 0
3 years ago
Two cars traveled equal distances in different amounts of time. Car A traveled the distance in 2.4 h, and Car B traveled the dis
S_A_V [24]
Given:
t A = 2.4 h
t B = 4 h
v A = 22 + v B

Solution:
Distance A and distance B is the same, distance could be defined using formula d = v × t
d A = d B
(v A × t A) = (v B × t B)

plug in the numbers
v A × 2.4 = v B × 4
(22 + vB) × 2.4 = 4 vB

remove the parenthesis using distributive property
(22 × 2.4) + (2.4 × vB) = 4vB
52.8 + 2.4vB = 4vB
add like terms
52.8 = 4vB - 2.4vB
52.8 = 1.6vB
52.8/1.6 = vB
vB = 33
the speed of car B is 33 mph

vA = 22 + vB
vA = 22 + 33
vA = 55
the speed of car A is 55 mph
6 0
3 years ago
A rectangle pyramid is sliced parallel to its base as shown in the figure. What is the shape of the resulting two-dimensional cr
Aleks [24]
C hope it helps sorry if I'm wrong
8 0
3 years ago
Read 2 more answers
Other questions:
  • 12/3m +2 = 21/6*<br> what is the answer
    12·1 answer
  • I dont understand.. Could someone help?​
    13·1 answer
  • A chemical company makes two brands of antifreeze the first brand is 55% pure antifreeze and the second brand is 80% pure antifr
    8·1 answer
  • Please answer asap...
    15·1 answer
  • If 32% of a number is 64, what is the number?
    5·1 answer
  • craig hiked for 7/10 mile and stopped to take pictures.Then her hiked for another 25/100 mile. How far did he hike in all
    13·1 answer
  • A. What are the approximate coordinates of the point of intersection of the two
    10·1 answer
  • Given: 3c + d = f + g, d = f, g = c + 8 Prove: c = 4
    10·1 answer
  • Line CD passes through points (0, 2) and (4, 6). Which equation represents line CD?
    6·1 answer
  • 2; 4; 6; 8; ...
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!