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Reil [10]
2 years ago
12

Let X = the number of nonzero digits in a randomly selected 4-digit PIN that has no restriction on the digits. What are the poss

ible values of X? 0, 1, 2, 3, 4 0, 1, 2, 3, 4, ... 1, 2, 3, 4, ... 1, 2, 3, 4 0, 1, 2, 3
Mathematics
1 answer:
NISA [10]2 years ago
4 0

Answer:

X = {0, 1, 2, 3, 4}

Step-by-step explanation:

If X is the number of nonzero digits in a 4-digit PIN with no restriction on the digits, the pin can have up to 4 nonzero digits.

Let's see some examples:

If the PIN is 0000 then X = 4

If the PIN is 2045 then X = 3

If the PIN is 7546 then X = 0

From the previous examples, we can see that the possible values for X are 0, 1, 2, 3, 4.

Thus X = {0, 1, 2, 3, 4}

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What is 279* 508 show your work
In-s [12.5K]

Answer:

141732

Step-by-step explanation:

  2 7 9

× 5 0 8  

------------------------

            2     6 7

    2      2     3 2

 1  3      4  

 1  3      9    5 00

--------------------------------

     1    

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its rlly hard to line up numbers on a computer.. hope u still understand it

5 0
3 years ago
Solve using the quadratic equation -4x² + 7x + 5 = 0​
Luda [366]

Answer:

x=-0.544727

x=2.294727

Step-by-step explanation:

Given quadratic equation to solve:

  • -4x²+7x+5=0

To solve, use the quadratic formula

x= -b ±  b² - 4ac / 2a

Substitute your values for a, b, & c and solve

x= -7 ± 7² - 4·(-4)·5 / 2·(-4)

x= -7 ± 49 - -80/-8

x= -7 ± 129/-8

Then, reduce the problem

x= -7/-8 ± 129/-8

x=-0.544727

x=2.294727

4 0
1 year ago
4. Numbers those only<br>factors<br>one and itselt are called​
katovenus [111]

Answer:

Prime numbes

Step-by-step explanation:

Numbers whose only factors are 1 and itself are called prime numbers.

Such numbers have only two factors.

Examples are: 2, 3, 5, 7 ,9... etc.

3 0
2 years ago
Read 2 more answers
Which expressions are equivalent to 2[3/4x+7]-3(1/2x-5)? Check all that apply
emmainna [20.7K]

Answer:

B, C, E

Step-by-step explanation:

This is correct. Trust me.

4 0
2 years ago
I need help on this question!!
elena55 [62]
I think the answer is D, 28*11=308 plus the 12*14 equals 476. The answer is D
3 0
3 years ago
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