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monitta
3 years ago
7

A scientist is cooling a liquid at a steady rate. The temperature of the liquid changed by −8212 °C over 215 minutes. What was t

he temperature change after 1 minute?
Mathematics
2 answers:
solong [7]3 years ago
5 0
-8212/215 = 38.19 degrees.
kari74 [83]3 years ago
5 0
I think you meant 82 1/2 and 2 1/5 so according to those the answer is indeed -37.5 8) ;)

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Using properties of parallelograms, RSTU is a parallelogram that has vertices R (-3,1), S (3,4), and T( 6,2(. What are the coord
ElenaW [278]

Answer:

(0, -1)

Step-by-step explanation:

A parallelogram is a quadrilateral (has four sides) in which opposite sides are parallel to each other. Also for a parallelogram, the opposite sides and angles are equal to each other.

Hence for parallelogram RSTU, RS // TU and RU // ST

Let the coordinate of U be (x , y). Two lines are parallel to each other if their slopes are equal, hence:

Slope of RS = (4 - 1) /[3 - (-3)] = 3/6 = 0.5

Slope of ST = (2 - 4) /[6 - 3] = -2/3

Slope of RU = (y - 1) /[x - (-3)] = (y - 1) / (x + 3)

Slope of TU = (y - 2) /[x - 6]

Slope of RU = Slope of ST

(y - 1) / (x + 3) = -2/3

3y - 3 = -2x -6

2x + 3y = -6 + 3

2x + 3y = -3                  (1)

Slope of RS = Slope of TU

0.5 = (y - 2) /[x - 6]

0.5x - 3 = y  - 2

0.5x - y = 1                  (2)

Solving 1 and 2 simultaneously gives:

x = 0, y = -1

Therefore the coordinates of U = (0, -1)

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Answer:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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The answer would be $43.
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mariarad [96]

Answer:

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