How to work ratios and graphs

Mathematics

2 answers:

Olegator [25]2 years ago

7 0

Do you have a picture?

Mila [183]2 years ago

7 0

I'm not sure about ratios, because I'm bad at them myself, but I can help you with graphs. Take this plot point, for example (3,4) The X-axis is the line that is horizontal. This is the first letter in the coordinates, 3, so you would find the number 3 on the X-axis. The Y-axis is the line that is vertical, and its number is the second one in your set of coordinates. You would then find 4 on your Y-axis. Then, draw a line from your X-coordinate up, and your Y-coordinate right. Find where these overlap. If these are negatives, however (for example, if the coordinates were (-3,-4)), then draw the line in the opposite direction (X-coordinate down, Y-coordinate left) and do the same as you would with normal coordinates and find where they overlapped. I hope this helped you, since I love graphs and want to help!

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2 years ago

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Keith_Richards [23]

Hi there!

In order to solve, we need to use the formula for the area of a circle, and the angle given to find the area of the sector. Then, subtract the area of the triangle to find the area of the segment. We would use the equation : A = x/360 (pi * r^2) - 1/2(b * h). We need to plug in 90 for the angle measurement, 8 for the radius, and 8 for both the base and height.

WORK:
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3 years ago

The graph shows the linear relationship between the height of a plant (in centimeters) and the time (in weeks) that the plant ha

Snezhnost [94]

You did not include the graph.

Searching on internet I found a graph with which I can help you. I will solve the question using and so you can understand the problem and solve with the real graph.

1) The slope of line given the graph is calculated as:

slope = run / rise = Δy / Δx = constant.

2) So, you can choose any two points to calculate the slope.

3) Uisng the points (50,20) and (30,10) you get:

slope = [ 20 - 10] / [50 - 30] = 10 / 20 = 1/2

4) Note that that means that the plant grows 1 cm in 2 days

5) The rate of change is 1cm / 2 weeks.

With this you know how to calculate the slope, which is the same rate of change, and the meaning of it, which permits to answer the question from the complete statement and graph.