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ozzi
3 years ago
14

Explain how you could add 678 + 303 using mental math

Mathematics
2 answers:
Bad White [126]3 years ago
6 0
Okay well I do it like this. 3+8=11. I put a 1 down and carry the other. so I do 7+0+1=8 so now I have 81, and last I do 6+3=9. so the answer would be 981.


Have a nice day!
bezimeni [28]3 years ago
4 0
Add the hundreds first then the tenths then the units. so add 600 +300 which is 900 then 70 +0 which is 70 then 8+3 which is 11 then add them all up which is 981.
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F(x)=log2(x-3) find the domain of x
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3 years ago
How many distinct arrangements can be formed from all the letters of "students"? Please show your work. Thanks!
topjm [15]

There are a total of 8 letters in student, with 6 different letters ( there are 2 s's and 2 t's).

First find the number of arrangements that can be made using 8 letters.

This is 8! which is:

8 x 7 x 6 x 5 x 4 3 x 2 x 1 = 40,320

Now there are 2 s's and 2 t's find the number of arrangements of those:

S = 2! = 2 x 1 = 2

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Now divide the total combinations by the product of the s and t's:

40,320 / (2*2)

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3 years ago
Arithmetic sequence for -1 -6 -11 -16 expression
vampirchik [111]

Answer:

hello :

note :

the nth term of an arithmetic sequence is :

An =A1+(n-1)d   ....a common difference is : d   ...   A1 :  the first term

in this exercice : A1 = - 1         d = (-6) -(- 1)  = -5

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4 0
4 years ago
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What is 345.6 in expanded form
baherus [9]
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8 0
3 years ago
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1.
photoshop1234 [79]

Answer:

0.923

Step-by-step explanation:

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\frac{12}{13}= 0.92307692307 ≈ 0.923

So there should be a 0.923 chance that a purple marble is picked.

3 0
3 years ago
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