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Natali5045456 [20]
2 years ago
11

Which expression is equivalent to (x⁴/³ x²/³)¹/³ x²/⁹ x²/³ x⁸/²7 x⁷/³

Mathematics
1 answer:
Andreas93 [3]2 years ago
8 0

Answer:

it really depends on what x =

Step-by-step explanation:

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Given that (2x-1)(x+5)=2x^2-mx-5, what is the value of m​
aksik [14]
Expand the left side
2x(x + 5) - 1(x + 5) = 2x² - mx - 5
2x² + 10x - x - 5 = 2x² - mx - 5
2x² + 9x - 5 = 2x² - mx - 5
cancel 2x² and -5
9x = - mx


m = -9
sorry i was wrong, my mistake hehe
3 0
3 years ago
There are 50 runners in a race. How many ways can the runners finish first, second, and third?
Dmitrij [34]

Number of ways can the runners finish first, second, and third is 1,17,600 .

<u>Step-by-step explanation:</u>

Permutation is the act of arranging the members of a set into a sequence or order, or, if the set is already ordered, rearranging (reordering) its elements—a process called permuting. For example, written as tuples, there are six permutations of the set {1,2,3}, namely: (1,2,3), (1,3,2), (2,1,3), (2,3,1), (3,1,2), and (3,2,1). Formula of Permutation is : P(n,r) = \frac{n!}{(n-r)!} where n is the number of things to choose from,  and we choose r of them,  no repetitions,  order matters. Here , n = 50 , r= 3

⇒ P(n,r) = \frac{n!}{(n-r)!}

⇒ P(50,3) = \frac{50!}{(50-3)!} = \frac{50(49)(48)47!}{47!}

⇒ P(50,3) = 50(49)(48)

⇒ P(50,3) = 1,17,600

∴ Number of ways can the runners finish first, second, and third is 1,17,600 .

8 0
3 years ago
Liam's dad earns bonus miles for each mile that he flies on a trip. On his most recent trip, the pilot announced they were trave
vlada-n [284]

Answer:

880 bonus miles

Step-by-step explanation:

220 times 4 equals 880

8 0
3 years ago
Find the missing side lengths. Answers are in simplest radical form with the denominator rationalized.
Maksim231197 [3]

Answer:

............................

8 0
3 years ago
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in a test consisting of 90 questions, Ama answered 75% of the first 40 questions correctly. If she had to get a score of 80% in
Shalnov [3]

Answer:

total question =90

she obtained 75% of first 40 questions

  1. No. of question she got correct in first 40 = 75% * 40 = 30

2. in order to get 80% out of 90,

the no. of questions got correct by Ama = 80% * 90 = 72

3. As she already got 30 c0rrect in first 40 questions, the number of question she needs correct for remaining 50 = (72-30) = 42

percentage = 42/50*100% = 84%

3 0
3 years ago
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