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Alex73 [517]
3 years ago
5

The circumstances of Z is 84cm. What is the length of XY (the mirror arc)

Mathematics
1 answer:
Serga [27]3 years ago
8 0

Answer:

B

Step-by-step explanation:

arc length = circumference × fraction of circle

                 = 84 ×\frac{90}{360} = 21 cm


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A plant’s growth rate is observed and recorded for a science experiment. The observer notes that on week 2, the plant is 4 inche
Lina20 [59]

Answer:

y - 13 = 3(x - 5)

Step-by-step explanation:

x represents week and y represents inches. Week 2 and week 5 = 2 to 5 = three number difference. The inches which is 4 and 13 have a 9 inched difference. So like I said week represents x and y represent inches so now u have to find the slope, which would be y/x so replace it with the numbers we got so it would now be 9/3. The simplified version would be 3. So the slope is 3.

Point-slope equation: y-y^1=m(x-x^1), y^1 and x^1 are just some random points on the graph, but since we don't have a graph we can use either week 2 and 4 inches or week 5 and 13 inches because if this were a graph, those would be existing points on the graph. And m is the slope so just replace m with 3. We'll use 5 and 13 so: y - 13 = 3(x - 5)

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5 0
3 years ago
The sum of three numbers is 90. The third number is 10 less than the first. The second number is 3 times the third. What are the
Katyanochek1 [597]

Answer:

16

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=>

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2 years ago
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