3 years ago

Expression 1

Mathematics

1 answer:

liberstina [14]3 years ago

5 0

The answers to the questions

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Need help quickly please!!!

Bad White [126]

Answer:

Step-by-step explanation:

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3 years ago

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Prove that: 5^31–5^29 is divisible by 100.

ANEK [815]

Answer:

See explanation

Step-by-step explanation:

Consider the expression

$5^{31}-5^{29}$

First, factor it:

$5^{31}-5^{29}=5^{29}\cdot(5^2-1)=5^{29}\cdot (25-1)=24\cdot 5^{29}$

Note that

$100=25\cdot 4$

Then

$5^{31}-5^{29}=24\cdot 5^{29}=6\cdot 4\cdot 25\cdot 5^{27}=6\cdot 100\cdot 5^{27}$

This shows that number 100 is a factor of the expression $5^{31}-5^{29}$ and, therefore, this expression is divisible by 100.

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3 years ago

What is the following solution to |x+3|=12

vladimir1956 [14]

$|x|=a\iff x=a\ or\ x=-a\\==============================\\|x+3|=12\iff x+3=12\ or\ x+3=-12\ \ \ \ |subtract\ 3\ from\ both\ sides\\\\\boxed{x=9\ or\ x=-15}$

5 0

3 years ago

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5 hours 15 min + 3 hours 33 min show the working as well

Alika [10]

Answer:

8 hours 48 mins

Step-by-step explanation:

h m

5:15

+3:33

--------------

8:48

5 hours + 3 hours =8 hours,

15 mins + 33 mins = 48 mins

Therefore, it's 8 hours 48 mins.

7 0

2 years ago

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Please help me and also you have to show work please!

LenKa [72]

2544.69 is the answer I believe I hope I am right.

6 0

2 years ago