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NNADVOKAT [17]
2 years ago
12

A molecule that can be used as a molecular clock has a neutral mutation rate of one mutation per 40 million years. How many year

s ago did two species share a common ancestor if the molecules found in these two species differ by a total of eight mutations? 160 million years 320 million years 100 million years 240 million years.
Mathematics
2 answers:
Paha777 [63]2 years ago
4 0

Answer:

Answer: 320 MIlion years

Step-by-step explanation:

IT is not very hard because all you have to do is since it is only 40 million per one rotation and you have eight of them, then it is 320 because 4 times 8 equals 32.

Mandarinka [93]2 years ago
3 0

Answer:

240

Step-by-step explanation:

Hope its right, sorry if it isn't.

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Apples cost $0.75 per pound and bananas cost $1.05 per pound
LuckyWell [14K]

Answer:

<em>The baker bought 8 apples and 4 bananas</em>

Step-by-step explanation:

<u>System of Equations</u>

Let's call:

a = pounds of apples

b = pounds of bananas

The baker bought a total of 12 pounds of apples and bananas, thus:

a + b = 12      [1]

Apple cost $0.75 per pound and each pound of bananas cost $1.05 per pound. Thus the total cost is 0.75a + 1.05b. We know he spent a total of $10.20, thus

0.75a + 1.05b = 10.20     [2]

Solving [1] for a:

a = 12 - b       [3]

Substituting in [2]:

0.75(12 - b) + 1.05b = 10.20

Operating

9 - 0.75b + 1.05b = 10.20

Simplifying:

0.30b = 10.20 - 9 = 1.20

Dividing by 0.30:

b = 1.20/0.30

b = 4

From [3]:

a = 12 - 4 = 8

a = 8

The baker bought 8 apples and 4 bananas

8 0
2 years ago
Mrs.Gomez paid $780 for a new backyard fence. A new gate cost and additional $225. The fencing was a total of 120 feet. What was
In-s [12.5K]
I’m not sure what the gate has to do with the problem, but you should just divide 780 by 120 to get 6.5. In other words, each foot costs $6.50.
5 0
3 years ago
Please give answer i gives biranlist
zhannawk [14.2K]

Answer:

The answer should be 54, lmk if it works

3 0
2 years ago
Spencer can do a piece of work in 20 days and Toby in 25 days. They began to work together.
zlopas [31]

Answer: spencer left after 14 days

Step-by-step explanation:

5 0
2 years ago
Which of these can be listed as benefits of filing your tax return online?
Alik [6]

Answer:  Option 'c' is correct.

Step-by-step explanation:

Advantages of filling tax return online:

1) It allows for greater accuracy when filling as online system is faster in updating and verifying the details of individual.

2) It allows for faster receipt of any refund due as it gives you print pdf of receipt of any refund due , don't need to go and make a queue to pay the bills or to get refund.

Hence, II and III are correct.

Therefore, Option 'c' is correct.

3 0
2 years ago
Read 2 more answers
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