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Leya [2.2K]
4 years ago
14

Byron bought a keyless entry door lock that has the digits 0 through 9 on the keypad. He wants to choose a three-digit entry cod

e. How many different combinations are possible, if the digits can be repeated?
27
30
729
1,000
Physics
2 answers:
DedPeter [7]4 years ago
8 0

Answer:

27

Explanation:

schepotkina [342]4 years ago
8 0

Answer:

1000

Explanation:

There are 10 possible choices for the first number, 10 for the second, and 10 for the third. Multiplying all of this together, you get 10*10*10=1000 possible combinations. Hope this helps!

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A stone is dropped into a river from a bridge 44.0 m above the water. Another stone is thrown vertically down 1.72 s after the f
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Answer:

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Explanation:

given,

bridge height = 44 m

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initial speed of the second stone = ?

difference after which the second stone is thrown = 1.72 s

for stone 1

h = ut + \dfrac{1}{2}gt^2

h =\dfrac{1}{2}gt_1^2

for stone 2

h = u_0 (t_1-t) + \dfrac{1}{2}g (t_1-t) ^2

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