4 years ago

HELP!

Mathematics

1 answer:

Lubov Fominskaja [6]4 years ago

6 0

I’m pretty sure the last answer is the correct one!

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Review the scenario and the solution. Explain what is wrong with solution and correct the error.

butalik [34]

2.25h(60m/hr)(1/3)=45m

So Rick spends 45 minutes studying math per night.

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3 years ago

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What do you think it means when the change is positive? Negative? in a mathematical way

SashulF [63]

Answer:

A number is positive if it is greater than or equal to zero. A number is negative if it is less than or equal to zero.

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3 years ago

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find the formula for a rational function that satisfies all of the following. its x-intercept is (-3,0). it has a vertical asymp

Norma-Jean [14]

Let that be

$\\ \rm\Rightarrow y=\dfrac{a(f(x))}{g(x)}$

Two vertical asymptotes at -1 and 0

$\\ \rm\Rightarrow y=\dfrac{a(f(x)}{x(x+1)}$

If we simply

$\\ \rm\Rightarrow y=\dfrac{a(f(x)}{x^2+1}$

Denominator has degree 2
Numerator should have degree as 2 and coefficient as 3 inorder to get horizontal asymptote y=3 means the quadratic equation should contain 3x²
But there should be a x intercept at -3 so one zeros should be -3

Find a equation

3x²+9x

Find zeros

3x²+9x=0
3x(x+3)=0
x=0,-3

Horizontal asymptote

3x²/x²
3

So our equation is

$\\ \rm\Rightarrow y=\dfrac{3x^2+9x}{x(x+1)}$

Graph attached

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2 years ago

A type of thermometer has temperature readings at the freezing point of water that are normally

irinina [24]

Answer: I'm pretty sure its -0.74

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2 years ago

What is the correct answer?

egoroff_w [7]

X⁴ - 81 = x⁴ - 9² (Difference of 2 squares, then we an write it:

(x²-3)(x²+3) =0, → then (x²-3) = 0 and (x²+3)=0

(x²-3) = 0 → x² = 3 → x = +√3 and x = -√3
(x²+3) =0 → x² = -3 → x = +√-3 and x = -√3→ or i√3 AND x = -i√3

A{ -3 , +3 , -i√3 , i√3}

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3 years ago