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2 years ago

6TH GRADE HELP!! Describe the similarities and differences between primary and secondary sources. In two sentences.

Mathematics

2 answers:

denis-greek [22]2 years ago

5 0

A primary source saw something first-hand. A secondary source only heard about it.

Nuetrik [128]2 years ago

3 0

The most basic similarity between primary & secondary sources is "They both Convey Information","Neither is an Absolute Objective Source" and in some special situation, a single source can be both at the same time.

Now, Difference is that, Secondary sources analyzes, interprets and explains primary sources, while they are independent and doesn't include any picture, articles, tools etc. which secondary sources do

Hope this helps!

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3 years ago

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3 years ago

As a financial consultant, the CFO of a major television company has shared the profit function P(x) = −x4 - 2x3 + 21x2 + 22x −

drek231 [11]

Answer:

The company will break even at x=1 and x=4.

Step-by-step explanation:

The given profit function is

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Where, x is number of commercials.

Use synthetic division or long division to find the factors of the function.

$P(x)=(x-1)(x^3+3x^2-18x-40)$

$P(x)=(x-1)(x+2)(x^2+x-20)$

$P(x) = -(x - 4) (x - 1) (x + 2) (x + 5)$

Equate P(x)=0, to find the break even points.

$-(x - 4) (x - 1) (x + 2) (x + 5)=0$

Use zero product property and equate each factor equal to zero.

$x=4,1,-2,-5$

Therefore the zeros of the function P(x) are 4, 1, -2 and -5. Since x is number of commercials, therefore the value of x must be positive. Therefore the company will break even at x=1 and x=4.

The higher degree of the function is even and the leading coefficient is negative. So,

$P(x)\rightarrow -\infty \text{ as }x\rightarrow \infty$

$P(x)\rightarrow -\infty \text{ as }x\rightarrow -\infty$

Since the value of x must be positive, therefore the left end point is y-intercept of the graph, i.e., (0,-40).

Therefore the company faces huge loss when the number of commercials increases unboundly.

The graph of the function is given below.

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3 years ago