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2 years ago

How many moles are in a sample of 4.57 x 1024 atoms of neon (Ne)?

Mathematics

1 answer:

damaskus [11]2 years ago

3 0

Answer:

151 mol Ne.

Step-by-step explanation:

I did work on Paper sorry if i can't type it, It'll mess it up.

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Help please! thanks! <br> Find the length of AB<br> A. 2.89<br> B. 33.13<br> C. 378.63<br> D. 377.19

Naddik [55]

<h3>Answer: 29 miles (approximate)</h3>

======================================================

Explanation:

Segment AB is already given to be 19 miles long.

I'm assuming your teacher meant to ask about side BC, which is side 'a' since it's opposite angle A.

Use the law of cosines to find the missing side

a^2 = b^2 + c^2 - 2*b*c*cos(A)

a^2 = 12^2 + 19^2 - 2*12*19*cos(138)

a^2 = 843.874040417691

a = sqrt(843.874040417691)

a = 29.0495101579647

a = 29 when rounding to the nearest whole number

Side BC is roughly 29 miles long.

8 0

2 years ago

Graph shown here is the graph of which of the following rational<br> functions?

yarga [219]

Answer:

B) f(x) = 1/x-1

Step-by-step explanation:

You can type it into desmos graphing calculator- hope this helps

6 0

2 years ago

Can you help me? Please explain how you got it!

julia-pushkina [17]

Answer:

Step-by-step explanation:

First we must find the x and y intercepts for y = -2x - 4. The y-intercept is -4, since it is b in y = mx + b, but you can also find it by plugging in zero for x:

$y = -2(0) - 4 = 0 -4=-4$

The x-intercept is found by plugging in zero for y:

$0=-2x-4$

$0+4=-2x-4+4$

$4=-2x$

$\frac{4}{-2}=\frac{-2x}{-2}$

$-2=x$

The graph with an x-intercept of -2 and a y-intercept of -4 is C. Also, less than inequalities have the shading underneath the line, so we definitely know C is the answer.

4 0

3 years ago

Malik buys and sells car parts. He bought two tires for $45.00 each and later sold them for $65.00 each. He bought three rims fo

saw5 [17]

The answer is 213 dollars

4 0

2 years ago

Which angle in def has the largest measure ?

Luden [163]

So you question is most likely about a triangle DEF with the 3 angles being named D, E, F. The triangle would look something like the image attached below.
If that is what is being asked then i need more info to answer but
By Definition it would be 180 degrees.

7 0

2 years ago