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denpristay [2]
3 years ago
14

Which of the following expressions are equivalent to 48a^3-75a? Select all that apply. Answer 1) 3(48a^3-75a). Answer 2) 3a(16a^

2-25) Answer 3)3a(4a+5)(4a+5) Answer 4) 3a(4a+5)(4a-5) Answer 5) -3a(25-16a^2) Answer 6) -3a(5-4a)(5+4a)
Mathematics
2 answers:
Ainat [17]3 years ago
8 0
The answer is 4) 3a(4a+5)(4a-5)
lapo4ka [179]3 years ago
7 0

Answer: The answer is (2), (4), (5) and (6).

Step-by-step explanation: The given expression is

E=48a^3-75a.

We are to select the correct expressions from the given options that are equivalent to the above expression.

We have the following forms of the give expressipn:

E\\\\=48a^3-75a\\\\=3a(16a^2-25)\\\\=3a\left((4a)^2-5^2\right)\\\\=3(4a+5)(4a-5)\\\\=-3a(5+4a)(5-4a)\\\\=-3a(25-16a^2).

Thus, (2), (4), (5) and (6) are the correct options.

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By what least number should 2048 be multiplied to get a perfect cube
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Answer:

2

Step-by-step explanation:

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6 0
3 years ago
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myrzilka [38]
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3 years ago
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The residents of a city voted on whether to raise property taxes. The ratio of yes votes to no votes was to . If there were 12,7
Sever21 [200]

Answer: The question is incomplete

Step-by-step explanation: The answer to this question cannot be determined correctly since an important detail is missing.

However, let me explain how you would normally go about it by using an example of mine. If for example the ratio of yes votes to no votes was 8 to 5, and the question requires you to calculate how many yes votes were there as indicated in your question, then the first step would be to find the total number of both sides of the ratio. That is add 8 to 5 which gives you 13. This means if there was a total of 13 votes cast, every yes vote stands for 8 out of 13 votes and every no vote stands for 5 out of 13 votes.

To express it mathematically, every yes vote would be 8/13 of the total (12779) and every no vote would be 5/13 of the total (12779).

Therefore to determine how many yes votes there was, is calculated as follows;

Let yes votes be y and no votes be x'

y = (8/13) * 12779

y = 102232/13

y = 7864

<em>Based on my example that the ratio of yes votes to no votes is 8 to 5, </em>

Then the number of yes votes was 7,864.

7 0
3 years ago
Alesha has $25. She spent $4 on lunch and $3 for a book everyday. How many days could Alesha use the money for?
Xelga [282]
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2 years ago
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Damm [24]
Not this riddle again


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notice that all the sums are different except for the 2 that add to 14
since there is not enough info, we can conclude that the sum was 14 and that the ages is either 2,6,6 or 3,3,8
after he says, "the youngest is called justice"
now we know there is a youngest
it cannot be 3,3,8 because 3 and 3 are both youngest
therefor the ages are
2,6 and 6 years old
7 0
3 years ago
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