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Ahat [919]
2 years ago
13

A lock has a code of 3 numbers between 1 and 25. If no numbers in the code are allowed to repeat, how many different codes could

be made?
Mathematics
1 answer:
Sloan [31]2 years ago
6 0
12167 codes can be made
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Brainliest if correct
Darya [45]

Answer:

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What is the value of the expression f(-3) + 2f(-1) - f (4)<br><br> PLEASE HELP NO LINKS
Bas_tet [7]

Answer:

22

Step-by-step explanation:

Find f(-3) :

f(x) = x² + 2x for x ≤ -3

That means for those values of x, less than or equal to -3, this is the function.

So, f(-3) = (-3)² + 2(-3) = 9 - 6 = 3

Now, f(-1) :

From the given data, we see it is: f(x) = 2 (\frac{1}{3} )^{2x}

We take this because -1 lies between -3 and 4.

Now, f(-1) = 2 (\frac{1}{3} )^{2(-1)}

 => f = (-1) = 2(3)^{2} = 2 (9) = 18

For f(4) :

Clearly, the function is: f (x) = \frac{2x - 5}{x-7}

f (4) = \frac{2(4)-5}{4-7} = \frac{3}{-3} = -1

Therefore, <u>f(-3) + f(-1) - f(4) = 3 + 18 - (-1) = 3 + 18 + 1 = 22.</u>

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3 years ago
What 2 whole numbers is the square root of 75 between?
Nataliya [291]

Answer:

8 and 9

Step-by-step explanation:

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2 years ago
If you have 186 pencils, how many how many will each person get in a class that has 23 students?
Brut [27]

Answer:

8

Step-by-step explanation:

total number of pencils = 186

number of students = 23

number of pencils each student gets = number of pencils ÷ number of pencils

=186/23

=8.08

so each student gets 8 pencils

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grant and sherman - 5900

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