3 years ago

What is the taxi distance from point C(2,4) to point D(1,7)

Mathematics

1 answer:

Delicious77 [7]3 years ago

5 0

I cant see my forehead

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I dont know this so please help me

Lemur [1.5K]

a is 3k^2

b is -12k

and c is 12

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3 years ago

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Angle a measured 59 degrees. if angle a is rotated 45 degrees, what is the measurement of angle a’?

sp2606 [1]

HAHA funny. The angle stays the same. 59 degrees.

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3 years ago

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Find the derivative of the function at P 0 in the direction of A. f(x,y,z) = 3 e^x cos(yz), P0 (0, 0, 0), A = - i + 2 j + 3k

Alik [6]

The derivative of $f(x,y,z)$ at a point $p_0=(x_0,y_0,z_0)$ in the direction of a vector $\vec a=a_x\,\vec\imath+a_y\,\vec\jmath+a_z\,\vec k$ is

$\nabla f(x_0,y_0,z_0)\cdot\dfrac{\vec a}{\|\vec a\|}$

We have

$f(x,y,z)=3e^x\cos(yz)\implies\nabla f(x,y,z)=3e^x\cos(yz)\,\vec\imath-3ze^x\sin(yz)\,\vec\jmath-3ye^x\sin(yz)\,\vec k$

and

$\vec a=-\vec\imath+2\,\vec\jmath+3\,\vec k\implies\|\vec a\|=\sqrt{(-1)^2+2^2+3^2}=\sqrt{14}$

Then the derivative at $p_0$ in the direction of $\vec a$ is

$3\,\vec\imath\cdot\dfrac{-\vec\imath+2\,\vec\jmath+3\,\vec k}{\sqrt{14}}=-\dfrac3{\sqrt{14}}$

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3 years ago

The table shows the change in the water level (in centimeters) of a reservoir for three months. Find the total change in the wat

RideAnS [48]

Answer:

$-\frac{65}{28}$ or $-2\frac{9}{28}$

Step-by-step explanation:

Add all fractions:

$-1\frac{3}{4}$ + $-\frac{1}{28}$ + $-\frac{15}{28}$ = $-\frac{65}{28}$

Simplify if needed:

$-\frac{65}{28}$ = $-2\frac{9}{28}$

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2 years ago

Given b = 4 and c = -5, evaluate b 2 - c 2.<br><br> 41<br> -2<br> -9

LekaFEV [45]

I hope this helps you

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3 years ago