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3 years ago

Why is a compound considered a pure substance why or why not

2 answers:

7 0

Sample Response: Even though a compound can be made of two or more types of atoms, it is still a pure substance because the compound can be isolated, like salt or water.

atroni [7]3 years ago

6 0

Answer: yes.

Step-by-step explanation:

A compound considered a pure substance. Compounds are formed by combination of two or more than two atoms in a fixed ratio. Pure substances can be broken down into elements or smaller compounds. So such compounds are treated as a pure because they can be broken down into smaller compounds or elements by chemical actions.

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What are the values for m, n, and p that complete the difference: 7/x-3/2=(n-mx)/px

Crank

Answer:

m = 3

n = 14

p = 2

Step-by-step explanation:

7/x-3/2=(n-mx)/px

(7*2-3*x/2)/2x=(n-mx)/px

=>(14-3x)/2x = (n-mx)/px

now we will compare

LHS and RHS with terms containing X and terms not containing x

14 = n

-3x = -mx

m = 3

2x = px

p = 2

Thus,

values for m, n, and p

are 3,14 and 2 respectively.

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3 years ago

Factoring trinomials 4x^2-15x-25

IrinaVladis [17]

Answer:

For a polynomial of the form ax2+bx+c a x 2 + b x + c , rewrite the middle term as a sum of two terms whose product is a⋅c=4⋅−25=−100 a ⋅ c = 4 ⋅ - 25 ...

Step-by-step explanation:

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3 years ago

Where are the residual values shown on a residual plot?

Elza [17]

Answer:

A) on the y-axis

Step-by-step explanation:

A residual plot has the Residual Values on the vertical axis (y-axis); the horizontal axis (x-axis) displays the independent variable.

5 0

3 years ago

Read 2 more answers

I don't remember sector area, and this is on my review for my geometry final

Fantom [35]

$\bf \textit{area of a sector of a circle}\\\\
A=\cfrac{\theta\pi r^2}{360}\qquad 
\begin{cases}
\theta=\textit{angle in degrees}\\
r=radius\\
---------\\
\theta=45\\
r=8
\end{cases}\implies A=\cfrac{45\cdot \pi \cdot 8^2}{360}$

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3 years ago

Write 18 cm as a percentage of 450 cm

Sergio [31]

Answer:

4 percent.

Step-by-step explanation:

(18/450) * 100

= 1800/450

= 180/45

= 4%.

5 0

3 years ago