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lara [203]
3 years ago
12

The graph shows a scuba divers ascent over time? There’s 3 questions on the picture!

Mathematics
1 answer:
Ostrovityanka [42]3 years ago
8 0

Answer:

a) 1/8

b) -10 m

c) y = x/8-10

Step-by-step explanation:

a) The slope of the line

We start by selecting two points on the graph

These are;

(0,-10) and (80,0)

The slope ;

m = y2-y1/x2-x1

m = (0+10)/(80-0) = 10/80 = 1/8

b) The y-intercept

This is where the graph crosses the y-axis

The point is (0,-10)

c) The equation

The equation is generally written as;

y = mx + c

where m is slope and c is y-intercept

Thus;

y = 1/8x -10

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Step-by-step explanation:

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3 years ago
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finlep [7]

Answer: the length is 11 cm.

The width is 7 cm.

Step-by-step explanation:

Let L represent the length of the rectangular plastic box.

Let W represent the width of the rectangular plastic box.

The area of the rectangular top of the box is 77 square cm. This means that

LW = 77- - - - - - - ;- - - -1

The plastic box has a length 4 cm longer than its width. This means that

L = W + 4

Substituting L = W + 4 into equation 1, it becomes

(W + 4)W = 77

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W² + 11W - 7W - 77 = 0

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W = 7 or W = - 11

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4 0
3 years ago
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Answer:

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The reading rate of Bill is 0.5 pages/minute

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3 years ago
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