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3 years ago

13

Choose three physical properties that can be used to identify pure substances. (select all that apply.) melting point degree of

ionization heat of combustion boiling point density

1 answer:

ch4aika [34]3 years ago

5 0

Malleable ductile and sonorous

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Im to lazy to do this.

san4es73 [151]

D is correct answer

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2 years ago

How do you unlock a post test on edmentum?

postnew [5]

Explanation:

A post-test or a mastery test can be unlocked if the learner who has the of it previously can complete the given tutorial with the test.

After the tutorial with the test, the learner will have to complete everything and if he passes the test with a completed answer then he will see that the Mastery Test has been unlocked. Also after the mastery test is unlocked it can be done again.

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2 years ago

8)<br> As the skydiver falls to Earth, she experiences positive acceleration due to

Lapatulllka [165]

Answer:

Excitement.

Explanation:

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2 years ago

The cost, C C, of producing x x Totally Cool Coolers is modeled by the equation C = 0.005 x 2 − 0.25 x + 12 C=0.005x2-0.25x+12 H

neonofarm [45]

Answer:

25 coolers are need to be produce and sell in order to minimize the cost.

Explanation:

$C = 0.005x^2-0.25x+12$ ..[1]

Differentiating the given expression with respect to dx.

$\frac{dC}{dx}=\frac{d(0.005x^2-0.25x+12)}{dx}$

$\frac{dC}{dx}=0.01x-0.25+0$

Putting , $\frac{dC}{dx}=0$

$0=0.01x-0.25+0$

$0.01x=0.25$

x = 25

Taking second derivative of expression [1]

$\frac{d^2C}{dx^2}=\frac{d(0.01x-0.25)}{dx}=0.01$

$\frac{d^2C}{dx^2}>0$ (minima)

25 coolers are need to be produce and sell in order to minimize the cost.

3 0

2 years ago

How do I rank the following elements by increasing electronegativity: sulfur, oxygen, neon, aluminum

irinina [24]

Aluminum, Sulfur, Oxygen, Neon

7 0

2 years ago

Read 2 more answers