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saul85 [17]
3 years ago
11

John is choosing a password for his access to the internet. He decided not to use the digit 0 or the letter M. Each letter or nu

mber may be used more than once. How many passwords of 2 letters followed by 4 digits are possible?
Mathematics
1 answer:
mafiozo [28]3 years ago
3 0
25 letters for first spot
25 letters for second spot
25 ^{2} = 625
9 numbers 
9 ^{4} = 6561
6561 times 625
=4,100,625
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Degger [83]

Answer:

95

Step-by-step explanation:

30+30 is 60

60+35 is 95

Another way to do this is to use multiplication then add. (30x2=60)

Hope I helped!

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3 years ago
Item 16 The variables x and y vary directly. Use the values to find the constant of proportionality, k. Then write an equation t
masya89 [10]

Answer:

k = 2

x = 2y

Step-by-step explanation:

If variables x and y vary directly, this is expressed as;

x ∝ y

x = ky

k is the proportionality constant

Let's assume the value of x and y since we are not given;

x = 20

y = 10

Substitute

20 = k(10)

10k = 20

k = 20/10

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Hence the constant of proportionality is 2

Substitute i=k = 2 into the equation x = ky

x = 2y

Hence an equation that relates x and y is x = 2y

<em>Note that the values here are assumed value, you can use the same method for any values of x and y</em>

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3 years ago
which expression is equivalent to the expression shown? 3 to the power of 7 X 3 to the power os negative 4
grandymaker [24]

Answer:

The answer is 27

Step-by-step explanation:

I worked it out using a calculator

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Vera_Pavlovna [14]
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ABC airlines has had delays on 18 of 126 recent flights . DEF airlines has had delays 13% of the time . Which airline would you
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