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baherus [9]
3 years ago
7

Which expression is equivalent to 5(a+4)?

Mathematics
2 answers:
natali 33 [55]3 years ago
6 0
Hey there! 

In order to find out the answer to this question, you have to distribute it! 

5(a + 4) \\ 5(a) = 5a \\  5(4) = 20 \\ 5(a + 4) = 5a + 20 \\ Answer: 5a + 20 (D)

Good luck on your assignment and enjoy your day! 

~LoveYourselfFirst:)
kondor19780726 [428]3 years ago
5 0
----------------------------------------
Apply distributive property :
----------------------------------------
5(a + 4) = 5a + 20 (Answer D)
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A.
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We can see that each succesive generation has two times more members. The sum is:
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To calculate number of ancestors we can use formula <span>for the sum of a geometric sequence. Geometric sequence is sequence of numbers that differ by a certain factor. This factor is called ratio. Formula is:
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For this question:
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<span>
b.
1 generation = 25 years
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c.
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The number of ancestors is greater than total number of people who have ever lived. This means that not all ancestors were distinct and that in each generation both men and women had children with more than one partner.
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