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2 years ago

10

jason divide 3 pounds of dog food equally among six dogs. draw a diagram and explain how you can use it to find the amount of fo

od for each dog receive

2 answers:

wel2 years ago

7 0

A half of dog food. Hope I helped

grin007 [14]2 years ago

5 0

Each dog will get half a pound

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Find the value of k so that 48x-ky=11 and (k+2)x+16y=-19 are perpendicular lines.

Rufina [12.5K]

Answer: k = -1 +/- √769

<u>Step-by-step explanation:</u>

48x - ky = 11

<u>-48x </u> <u> -48x</u>

-ky = -48x + 11

$\frac{-ky}{-k} = \frac{-48x}{-k} + \frac{11}{-k}$

$y =\frac{48x}{k} - \frac{11}{k}$

Slope: $\frac{48}{k}$

*************************************************************************

(k + 2)x + 16y = -19

<u>- (k + 2)x </u> -<u>(k + 2)x </u>

16y = -(k + 2)x - 19

$\frac{16y}{16} = -\frac{(k + 2)x}{16} - \frac{19}{16}$

$y = -\frac{(k + 2)x}{16} - \frac{19}{16}$

Slope: $-\frac{(k + 2)}{16}$

**********************************************************************************

$\frac{48}{k}$ and $-\frac{(k + 2)}{16}$ are perpendicular so they have opposite signs and are reciprocals of each other. When multiplied by its reciprocal, their product equals -1.

$-\frac{(k + 2)}{16}$ * $\frac{k}{48}$ = -1

$\frac{(k + 2)k}{16(48)}$ = 1

Cross multiply, then solve for the variable.

(k + 2)(k) = 16(48)

k² + 2k - 768 = 0

Use quadratic formula to solve:

k = -1 +/- √769

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3 years ago

Is 8 ,5,1 and -4 an arithmetic sequence.

kolbaska11 [484]

Answer:

The sequence is not geometric or arithmetic because there is no common difference or common ratio between each term.

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