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Anna71 [15]
3 years ago
13

The scatter plot below shows the number of animal cells Clara examined in a laboratory in different months: Plot ordered pairs 1

, 20 and 2, 60 and 3, 100 and 4, 140 and 5, 180 What is the approximate predicted number of animal cells Clara examined in the 9th month? 280 290 340 380
Mathematics
2 answers:
Cloud [144]3 years ago
8 0

Answer:

340

Step-by-step explanation:

Paraphin [41]3 years ago
6 0

The answer would be 340 and its correct because I did it!!

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Write an equation to express y in terms of x.
Arturiano [62]
Try -7 and 20
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2+2<br><br> show your work she said
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Julie travels 3 times as fast as Bill. Traveling in opposite directions, they are 190 miles apart after 2.5 hours. Find their ra
Mkey [24]

Answer:

Step-by-step explanation:

Let b

Bill's rate of travel = x

Let Julie's rate of travel = 3x

The time each travels is 2.5 hours

Together they travel a distance of 190 miles

d = r*t

Bill's distance covered is r * t = 2.5x

Julie's distance travel is 2.5 * 3x = 7.5x

The total distance = Bill + Julie

2.5x + 7.5x = 190

10x = 190

x = 190/10

x = 19

Bill's distance = 2.5 * 19 = 47.5

Julie's distance = 19 * 7.5 = 142.5

Rate = distance / time

Bill's rate = 47.5 / 2.5 = 19 miles per hour.

Julie's rate = 142.5/2.5 = 57 miles per hour

Is there an easier way?

You should notice that Bill's rate is just x which is 19 miles / hour

You can also notice that Julie is going 3 times as fast or 19*3 = 57

6 0
3 years ago
Unit 7 - Mid Unit Assessment - Grade 8
Stolb23 [73]

Answer:

1000 times

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8 0
3 years ago
a number is divided by 3 and the result is added to 1. the new result is doubled to give the final result 80. whats the number
Gnesinka [82]
78, because you have to do the inverse operation so 80/2= 40 then 40-1= 39 and 39*3 = 78
6 0
3 years ago
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