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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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inysia [295]

Answer:

<u>2:  1/25</u>

<u>-1: -1/5</u>

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Step-by step

number 2 on the number line is: 1/25

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5 0
3 years ago
A square has a side length of 2.5 meters. What is the largest radius of the largest that can fit inside the square.
Oksanka [162]

The largest radius of the circle that can fit inside the given square is 1.25 meters

Step-by-step explanation:

Step 1 :

Given,

the side of the square  = 2.5 meters

We need to determine the largest radius of the circle that can fit inside this square

Step 2 :

The diameter of the largest circle that can fit inside a square will be equal to length of given square's side.

So here the largest diameter will be 2.5 meters

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Step 3 :

Answer :

The largest radius of the circle that can fit inside the given square is 1.25 meters

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