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skad [1K]
3 years ago
10

Solve the quadratic equation below by completing the square

Mathematics
2 answers:
tia_tia [17]3 years ago
6 0

Answer:

n = -5/2 and n = 13/2


seraphim [82]3 years ago
5 0

Step-by-step explanation:

4·n^2 - 16·n - 21 = 44

4·n^2 - 16·n = 65

n^2 - 4·n = 65/4

n^2 - 4·n + 4 = 65/4 + 4

(n - 2)^2 = 81/4

n - 2 = ± 9/2

n = 2 ± 4.5

n1 = -2.5 or n2 = 6.5




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Answer:

25x+12y+4 \leq 130

Step-by-step explanation:

Here, x represents the number of tickets and y represents the number of T-shirts.

As per the statement:

Each ticket costs $25,  and souvenir T-shirts are $12 each

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It is also given that there is a $4 service fee for the entire purchase.

25x+12y+4

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⇒25x+12y+4 \leq 130

Therefore, an inequality could you use to answer the problem is, 25x+12y+4 \leq 130

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2 years ago
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