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Trava [24]
3 years ago
9

What is the measure of angle x ?

Mathematics
1 answer:
Arada [10]3 years ago
8 0

Answer:

It should either be 69 or 70

Step-by-step explanation:

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The school store sells 4 pencils for $0.50. At this rate, what is the cost in dollars) of 10 pencils?
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1.25

Step-by-step explanation:

10/4=2.5

2.5*0.5

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3 years ago
Determine an equation of the tangent line to <br> y = e - 2x<br> at the point (0,1).
Darya [45]

Answer:

y=-2x+1

this is the equation of the tangent line to the curve at the point (0,1)

Step-by-step explanation:

y = e^{-2x}

to find the tangent line we need to find the curve's derivative. using \dfrac{d}{dx}e^{ax} = ae^{ax}, we'll find dy/dx.

\dfrac{dy}{dx} = -2e^{-2x}

^ this is the equation of the slope of the curve. By finding the slope of the curve at (0,1) we'll also be finding the slope of the tangent to the curve at (0,1).

at (0,1) x = 0. we'll use that in dy/dx

\dfrac{dy}{dx} = -2e^{-2(0)}

\dfrac{dy}{dx} = -2(1)

\dfrac{dy}{dx} = -2

this is the slope of the tangent at point (0,1)

we'll use the general equation of the line formula to find the equation of tangent.

(y-y_1)=m(x-x_1)

here m is the slope, i.e. m = -2, and (x1,y1)=(0,1)

(y-1)=-2(x-0)

y=-2x+1

this is the equation of the tangent line at the point (0,1)

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3 years ago
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