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Anastaziya [24]
3 years ago
13

How many 4-digit numbers can be made from the digits 2, 3, 4, 5, 6, 7 if no digit is repeated in the same number?

Mathematics
1 answer:
jonny [76]3 years ago
8 0
THis equals the number of permutations of 4 from  6.

= 6P4  =  6! /  (6 - 4)!   = 6! / 2!  =  720/2  = 360 answer
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In 1996, only 193 people owned cellphones in metropolis. Each year, cell phone use has continuously grown by 58%. How many cellp
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6 0
4 years ago
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The state of Georgia has roughly 10⁷ human residents. Each human has roughly 10¹³ bacteria cells in his or her digestive tract.
crimeas [40]

Answer:

10^20

Step-by-step explanation:

So in this word problem, we have to multiply 10^13 bacteria cells on a single person by the 10^7 of people.

Always remember this, when you have exponenets with the same bases, and the question asks for multiplying and dividing exponents, you just need to add and subtract the exponent.

So in this case, we will just add since it calls for multipactation.

So we need to solve:

10^13+7

This will just equal:

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Hope this helps ;)

6 0
3 years ago
Could anyone explain to me about adding and subtracting exponents. I don’t understand these equations with their exponents!
meriva

Answer:

whenever you're multiplying terms that have exponents you multiply the coefficients and add their exponents:

Step-by-step explanation:

I think the answer to your first question should be:

30a²b - 30ab²

Your second answer is good

whenever you're multiplying terms that have exponents you multiply the coefficients and add their exponents:

for example, 6a²b³c x 2abc = 6(2)(a²)(a)(b³)(b)(c)(c)

= 12a³b⁴c²

8 0
2 years ago
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VladimirAG [237]
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3 years ago
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