2 years ago

Question 9 of 10

Mathematics

1 answer:

dolphi86 [110]2 years ago

4 0

Answer:

is this a multiple choice question?

Step-by-step explanation:

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A farmer has 160 bushels of apple to sell at his roadside stand. He sells an average of

Damm [24]

Answer:

He sold 87-3/5 bushels in 6 days , he has 72-2/5 bushels left

Step-by-step explanation:

14-3/5 x 6 = Bushels sold in 6 days

6 0

3 years ago

Find the linear approximation of the function f(x, y, z) = x2 + y2 + z2 at (4, 4, 7) and use it to approximate the number 4.022

miss Akunina [59]

Answer:

80.66

Step-by-step explanation:

$L\left( x \right) = f\left( a \right) + f'\left( a \right)\left( {x - a} \right)$

$f(x, y, z) = x^2+y^2+z^2$

Since we have three variables,

$L(x, y,z) = f(a, b,c) + f_x (a, b,c) (x - a) + f_y (a, b,c) (y - b) +f_z(a,b,c)(z-c)$

$f(4, 4, 7) = 4^2+4^2+7^2=81$

$f_x (a, b,c)=2x=2*4=8\\f_y (a, b,c)=2y=2*4=8\\ f_z(a,b,c)=2z=2*7=14$

Therefore:

$L(x, y,z) = 81+ 8(x - 4) + 8 (y - 4) +14(z-7)$

Using the above:

f(4.02, 3.99, 6.97) =81+ 8(4.02 - 4) + 8 (3.99 - 4) +14(6.97-7)=80.66.

The approximation of $4.02^2 + 3.99^2 + 6.97^2$ is 80.66000.

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3 years ago

6. A dolphin swims at 2.0 km/hr. How far (in meters) will it travel in 1.50 hr?

stiv31 [10]

Answer:

Step-by-step explanation:

1200

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3 years ago

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Reptile [31]

Answer:

The last one

Step-by-step explanation:

The more weight something has the faster it will fall

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3 years ago

Simple way to differentiate between speed and average speed.

anygoal [31]

Dividing the number of speeds

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3 years ago

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