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xxMikexx [17]
3 years ago
8

Zara has forgotten her 4-digit PIN code.

Mathematics
1 answer:
lbvjy [14]3 years ago
3 0

Answer:

1500

Step-by-step explanation:

we can write the 4-digit PIN as ABCD

A = factor of 10 so,

A = 1, 2 ,5 (3 possible number or we can write n(A) = 3

B and C are number from 0 - 9 so each have 10 possible number n(B) = 10 and n(C) = 10

D makes the whole number cannbe divide by 2. it means that D must even number 2,4,6,8 or 0. so there are 5 possible number n(D) = 5

so to find how many different sets we just multiply all possible number

n(A) x n(B) x n(C) x n(D)

3 x 10 x 10 x 5 = 1500 different sets

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which equation is in slope-intercept form and represents a line with the slope 1/4 through the point of (0,0)
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Hi there!

The general form of the equation of a line in slope-intercept form is
y = ax + b

With 'a' representing the slope of the line. We know that the slope of this line is 1/4, so we can plug in this value into the equation of the line.

y = 1/4 x + b
When the line passes through the point (0,0) we can also plug in the x- and y-coordinate into the equation, and we'll see that some easy algebra will help us find our solution.

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Now we've found our value of 'b', which we can plug back into the equation in slope-intercept form to find our final solution.
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