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Julli [10]
1 year ago
15

The human eye contains approximately 9.1 x 10^7 rod cells and 4.5 x 10^6 cone cells . Samuel subtracts 9.1-4.5 and says there ar

e about 46,000,000 more rod cells than cone cells in the human eye . Use the drop - down menus to explain why Samuel is incorrect
Mathematics
1 answer:
Paul [167]1 year ago
6 0

Samuel is incorrect because he didn't subtract the power of the numbers.

<h3>How many more rod cells are there?</h3>

The number of rod and cone cells in the human eye is written in scientific notation. Scientific notation is used in expressing large numbers in smaller numbers. To write a number in scientific notation, the number is written as a decimal number, between 1 and 10 and multiplied by a power of 10. For example, 1 x 10² is equivalent to 100

(9.1 x 10^7) - (4.5 x 10^6)

= (9.1 - 4.5) x 10^(7 - 6)

4.6 x 10 = 46

To learn more about scientific notation, please check: brainly.com/question/25334755

#SPJ1

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iogann1982 [59]

Answer:

x=16, y=-4

Step-by-step explanation:

-1(x-y=12)

x+7y=-20

-x+y=-12

x+7y=-20

8y=-32

y=-4

x-4=12

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7 0
2 years ago
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A plant costs p dollars and a bush costs b dollars. Ana buys 2 plants and 4 bushes for $42. Paola buys 7 plants and 9 bushes for
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Answer:

p = 5 and b = 8

Step-by-step explanation:

First, create a system of equations:

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Solve by elimination by multiplying the top equation by -7 and the bottom equation by 2:

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Add these together, and solve for b:

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4 0
2 years ago
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A church group ordered a total of 22
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the group bought 10 burger and 12 drinks

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Answer:

8 cookies: 1 cookie =$1.25

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Lets first work out the price per unit for the 8 cookies. You can do this by dividing the price of 10 by the amount of 8, this gives you $1.25. This means that the price per cookie is $1.25.

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16/12=1.33

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3 years ago
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