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Mandarinka [93]
4 years ago
13

A website requires a 7 digit password. How many different passwords can be made using the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, and

9 if each number can only be used once?
A. 120
B. 70
C. 5,040
D. 604,800

Instructions/formula would be sooo great
Mathematics
1 answer:
olga_2 [115]4 years ago
4 0
B because 10 x 7 = 70
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NEED HELP CONFUSED IDK WHY THO
Gnom [1K]
Sorry I know the last part only
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6 0
3 years ago
Read 2 more answers
Two brothers, Mark and Walter, each inherit $20000. Mark invests his inheritance in a savings account with an annual return of 2
Igoryamba

Answer:

$720

Step-by-step explanation:

$20000 - 100%

$x. - 2.5%

x=(20000*2.5)/100=500

20000+500=$20500 in one year (Mark)

20000 - 100

x. - 6.1

x= (20000*6.1)/100 = 1220

20000+1220= $21220 (Walter)

21220-20500= $720 more (Walter will have after 1 year)

3 0
3 years ago
Linda is twice as old as Vera. Tanya is four less than four times the age of Linda. Their total age is two more than nine times
ryzh [129]

Let the age of Vera be 'x' years

So the age of Linda is '2x' years

Now Tanya is 4 less than 4 times Linda

So age of Tanya = 4(2x) -4 = 8x -4 years

So total age of Vera , Linda & Tanya

= x + 2x + 8x - 4

= 11x - 4

But it is 2 less than 9 times Vera's age

11x - 4 = 9x + 2

11x - 9x = 4+2

2x = 6

x = 3

So Vera's age = 3 years

Linda's age = 2(3) = 6 years

Tanya's age = 8x - 4 = 8(3) - 4 = 24-4=20 years

Tanya is 20 years old.


8 0
3 years ago
45,621 round to the nearest thousand?
yaroslaw [1]

Answer: 46,000

Step-by-step explanation:

8 0
3 years ago
Write 7,847 , 10,000 in a decimal number
DochEvi [55]

Answer:

Step-by-step explanation:

7,847,100

7 0
3 years ago
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