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3 years ago

The graph below is used by company 2 to show the average monthly electric cost based on the electricity provider.

Mathematics

2 answers:

Simora [160]3 years ago

8 0

Answer:

Step-by-step explanation:

zepelin [54]3 years ago

4 0

Answer:

A- The scale on the y-axis could be changed to 0-150

Step-by-step explanation:

This way you can see the data on the graph from the lowest to highest values.

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What is the answer? Please help me out

Veronika [31]

I think it may be 19.5

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4 years ago

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Given f(x) = √(x-3) , what is the positive value of f(12)?

Shalnov [3]

Answer:

Step-by-step explanation:

Given

f(x) = $\sqrt{(x-3)}$ , then

f(12) = $\sqrt{12-3}$ = $\sqrt{9}$ = ± 3

There are 2 values 3 and - 3

The positive value of f(12) is + 3

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4 years ago

Is 2 greater or less than or equal to -5?

Marina CMI [18]

2 is greater then -5.

2 is a positive number unlike -5 it is a negative which is less then 2.

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3 years ago

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The function f(x)=125(0.9)x models the population of a species of fly in millions after x years.

SSSSS [86.1K]

A word to the wise: It's <span> f(x)=125(0.9)^x, where ^ represents exponentiation.

In this case the ave. value over the interval [11, 15] is

125(0.9)^15 - 125(0.9)^11
------------------------------------- = (125/4) [ 0.9^15 - 0.9^11)
15 - 11 = (31.25) [ 0.2059 - 0.3138 ] = a negative result
= (31.25)(-0.1079) = -3.372 (av. r. of c.
over the interval [11,15] )

Do the same thing for the time interval [1,5]. Then compare the two rates of change.</span>

6 0

3 years ago

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Given the equation (x+a)^2(x-2)=x^3+bx^2+12x-72 find a and b

GaryK [48]

Isolate the variable by dividing each side by factors that don't contain the variable.

$a=- \frac{ x^{2}- \sqrt{( x^{3} + x^{2} b+12x-72(x-2)-2x} }{x-2} ,- \frac{ x^{2}+ \sqrt{( x^{3} + x^{2} b+12x-72(x-2)-2x} }{x-2}$

Solve for b by simplifying both sides of the equation then isolating the variabel.

$b= \frac{12}{x}+ \frac{72}{ x^{2} }-2+2a- \frac{4a}{x}+ \frac{ a^{2} }{x}- \frac{2a^{z} }{ x^{2} }$

Hopefully i helped ^.^ Mark brainly if possible

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3 years ago