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-Dominant- [34]
3 years ago
12

Suppose a certain combination lock requires three selections of numbers, each from 1 through 25. (a) How many choices are there

for the first number in the combination
Mathematics
1 answer:
Montano1993 [528]3 years ago
5 0

Answer:

25 choices

Step-by-step explanation:

Given

Possible Combinations: 1 to 25

Selections: 3 numbers

Required

Determine the number of choices of the first number

The first number of the lock can be any of 1 to 25.

This is so because when you counting from 1 to 25, there are 25 numbers

<em>Hence, number of choices is 25 numbers</em>

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A church rings its bells every 15 minutes, the school rings its bells every 20 minutes and the day care center rings its bells e
ankoles [38]

Answer:

As few as just over 345 minutes (23×15) or as many as just under 375 minutes (25×15).

Imagine a simpler problem: the bell has rung just two times since Ms. Johnson went into her office. How long has Ms. Johnson been in her office? It could be almost as short as just 15 minutes (1×15), if Ms. Johnson went into her office just before the bell rang the first time, and the bell has just rung again for the second time.

Or it could be almost as long as 45 minutes (3×15), if Ms. Johnson went into her office just after the bells rang, and then 15 minutes later the bells rang for the first time, and then 15 minutes after that the bells rang for the second time, and now it’s been 15 minutes after that.

So if the bells have run two times since Ms. Johnson went into her office, she could have been there between 15 minutes and 45 minutes. The same logic applies to the case where the bells have rung 24 times—it could have been any duration between 345 and 375 minutes since the moment we started paying attention to the bells!

Step-by-step explanation:

7 0
3 years ago
4b<br> 6c for b = (-3) and c = 5
Annette [7]

Answer:

Today: Friday, 06 November 2020

Hour: 10.15 WIB (Indonesia)

<u>_______________________________</u>

so,

6c = 6 × 5 = 30

4b = 4 × (-3) = -12

Example:

4b - 6c

= 4(-3) - 6(5)

= -12 - 30

= - 42

4b + 6c

= 4(-3) + 6(5)

= -12 + 30

= 18

8 0
3 years ago
A cell phone plan uses a fixed charge of $20 per month plus 10 cents for each minute used to calculate the total bill. The total
Phantasy [73]
The fourth one.
t 20,20.10,20.20,20.30
m 0,1,2,3
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4 years ago
Convert the unit of capacity.
EastWind [94]

Answer: 72 US FLUID OUNCES

8 0
4 years ago
Jake spins a spinner divided into five even sections numbered one through five. He then flips a coin. What is the probability of
galina1969 [7]

Answer:

12.5% chance

Step-by-step explanation:

First a spinner has a 25% chance of landing on a one, then a tails is a 50% chance, subtract devide 25 by two and you get 12.5.

4 0
3 years ago
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