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prisoha [69]
3 years ago
13

I need helppppppppp​

Mathematics
1 answer:
tankabanditka [31]3 years ago
6 0

Answer:

4^2

Step-by-step explanation:

\frac{4^7}{4^5}=4^{7-5}=4^2

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X = [?]<br> 3x + 2 + 6x + -20
Helen [10]

Answer:

9x−18

Step-by-step explanation:

6 0
3 years ago
Answer quickly give brainiest answer
storchak [24]

Answer:

A. 6

B. 3 and 3

Step-by-step explanation:

A) 8x3/4

B) since the area is three and you have to spit the triangle down the middle...

You draw a line diagonally from the top right corner to the bottom left corner and the area would be 3 and 3 because 6 in half is 3

3 0
2 years ago
Read 2 more answers
Isotope mass (amu) abundance (%) 1 203.97304 1.390 2 205.97447 24.11 3 206.97590 22.09 4 207.97665 52.41 find the atomic mass of
Nata [24]
Answer:
average atomic mass = 207.2172085 amu

Explanation:
To get the average atomic mass of an element using the abundance of its isotopes, all you have to do is multiply each isotope by its percentage of abundance and then sum up all the products.

For the question, we have:
203.97304 amu has an abundance of <span>1.390% (0.0139)
</span>205.97447 amu has an abundance of 24.11% (0.2411)
206.97590 amu has an abundance of 22.09% (0.2209)
207.97665 amu has an abundance of 52.41 % (0.5241)

The average atomic mass can be calculated as follows:
average atomic mass = 203.97304(0.0139) + 205.97447(0.2411)
                                     + 206.97590(0.2209) + 207.97665(0.5241)
average atomic mass = 207.2172085 amu

Hope this helps :)
7 0
3 years ago
Write the fraction below as a sum or difference 5x+7 over 4
defon
The answer is: 1.25x + 1.75
8 0
3 years ago
Read 2 more answers
Im just gonna waste my points. first to comment gets the points I guess.
Aliun [14]

Answer:

Hey


Step-by-step explanation:


8 0
3 years ago
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