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8090 [49]
3 years ago
10

How many different 3-digit PIN codes are there that only include the digits 7, 4, 3 and 2?

Mathematics
1 answer:
KengaRu [80]3 years ago
6 0

Answer:

64

Step-by-step explanation:

We can use the product rule of counting to answer this:

There are 4 possibilities for the 1st digit
There are 4 possibilities for the 2nd digit
There are 4 possibilities for the 3rd digit
So we use the product rule of counting to give us:

4×4×4=64

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Y=-6x+15 <br> Y=4x-15 solve by elimination
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X=3 and y=−3 is the answer
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What’s the word problem... solve it... need help with 7 please! Thanks you
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30. you can model this with an equation and solve, x being the smallest number and the x+1 and x+2 representing the consecutive numbers.

x+(x+1)+(x+2)=93
3x+3=93
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4 0
3 years ago
Rich is driving from Philadelphia to Pittsburgh at 70 mph and Michelle is driving from Pittsburgh to Philadelphia at 65 mph. If
Sliva [168]
Let:
Philadelphia be point a
Pittsburgh be point b
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distance = velocity (time)

substituting the values:
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substituting both equations gives:
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4 0
4 years ago
Shelley is searching online for airline tickets. Two weeks​ ago, the cost to fly from Orlando to Boston was ​$210. Now the cost
Brums [2.3K]

Answer:

1) It would be about a 55% increase. 2) It would be about a 79% increase

Step-by-step explanation:

I used process of elimination to figure out how much of a percentage would be needed by just multiplying 210 by different percentages until I found the answer.

Sorry I don't have like a definite formula or anything for you to figure these questions out... I hope someone else answers with a more definite answer!

3 0
3 years ago
How many units long is a segment whose endpoints are (-4,1) and (1,13)?
Ann [662]

Answer:

13

Step-by-step explanation:

(1−−4)2+(13−1)2‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾√(1++0)2+(13−1)2‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾√(5)2+(12)2‾‾‾‾‾‾‾‾‾‾‾√25+144‾‾‾‾‾‾‾‾‾√169‾‾‾‾√≈13

Sorry if the explanation is a bit confusing but, I used the distance formula to do this.

Hope this helps!!! PLZ MARK BRAINLIEST!!!

7 0
3 years ago
Read 2 more answers
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