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3 years ago

Select the choice that translates the following verbal phrase correctly to algebra:

Mathematics

1 answer:

zimovet [89]3 years ago

7 0

The answer is:
(M - 7) +15

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Answer the questions about the following sets: D = {x | x is a person allergic to dogs}; C = {x | x is a person allergic to cats

Amiraneli [1.4K]

Answer:

1-22 2-1 3-7 4-18

Step-by-step explanation:

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3 years ago

Which equation best represents a trend line for the scatter plot?

butalik [34]

Y=-x+60 which draws a line directly from 60 on the y axis to 60 on the x axis, and crossing through the center of your scatter

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3 years ago

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Determine an expression for dy<br> dx given that x = sin3<br> (t)andy = cos3<br> (t)

shtirl [24]

Answer:

$\frac{dy}{dx} =-\sqrt[3]{\frac{y}{x} }$

Step-by-step explanation:

Recall that using the chain rule we can state:

$\frac{dy}{dt} =\frac{dy}{dx}*\frac{dx}{dt}$

and therefore solve for dy/dx as long as dx/dt is different from zero.

Then we find dy/dt and dx/dt,

Given that

$x=sin^3(t)\\dx/dt = 3 sin^2(t)* cos(t)$

And similarly:

$y=cos^3(t)\\dy/dt=-3\,cos^2(t)*sin(t)$

Therefore, dy/dx can be determined by the quotient of the expressions we just found:

$\frac{dy}{dx} =\frac{dy/dt}{dx/dt} =\frac{-3\,cos^2(t)*sin(t)}{3\,sin^2(t)*cos(t)} =-\frac{cos(t)}{sin(t)}$

now notice that we can find $cos(t) = \sqrt[3]{y}$ from the expression for y,

and $sin(t) = \sqrt[3]{x}$ from its expression for x.

Therefore dy/dx can be written in terms of x and y as:

$\frac{dy}{dx} =-\frac{cos(t)}{sin(t)}=-\sqrt[3]{\frac{y}{x} }$

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3 years ago

Identify the degree, type, and lead coefficient of f(x) = x2 + 3x - 4x + 6x* - 1.

bonufazy [111]

Answer:

2, quadratic, 1

Step-by-step explanation:

Degree is the highest power which is 2 then the lead coefficient is the constant multiplying the highest power so for x^2 it is 1 and the type of equation is what is it, linear, quadratic, cubic, etc. For this it is quadratic because x^2 means its a parabola.

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3 years ago

When I think of a number, double it, then add seven, I get 25. what number did I think of?

sweet [91]

Answer:

Step-by-step explanation:

25-7=18

half of 18 is 9

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3 years ago

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