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nikitadnepr [17]
3 years ago
7

What are the Solutions to the quadratic equation 40-x^2=0​

Mathematics
2 answers:
chubhunter [2.5K]3 years ago
8 0

Answer:

the answer will be number two x=+4\sqrt 20

Step-by-step explanation:

if u can brainliest plsss

Vitek1552 [10]3 years ago
6 0

Answer:

A. x= ±2√10

Step-by-step explanation:

subtract 40 from each side

divide each side by the negative

take the square root of both sides

simplify the square root of 40

±2√10

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AB = 44 + 3xBC = 33 + yCD = 64 − xAD = 48 − 2yQuadrilateral ABCD is a parallelogram if both pairs of opposite sides are congruen
Otrada [13]

The lengths (in centimeters) of the opposite side pairs are 59 cm , 38 cm. Option C) is the correct answer.

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

<u>step 1</u> :

Given that,

Quadrilateral ABCD is a parallelogram if both pairs of opposite sides are congruent.

<u>step 2</u> :

The opposite sides are AB and CD respectively.

The another opposite sides are BC and AD respectively.

<u>step 3</u> :

If both pairs of opposite sides are congruent, then

AB = CD

44+3x = 64-x

3x+x = 64-44

4x = 20

x = 5

<u>step 4</u> :

BC = AD

33+y = 48-2y

y+2y = 48-33

3y = 15

y = 5

<u>step 5</u> :

Subsitute x=5 and y=5 in any of the given sides,

CD = 64-x = 64-5 = 59

∴ CD = 59 cm

BC = 33+y = 33+5 = 38

∴ BC = 38 cm

The lengths of the opposite side pairs are 59 cm , 38 cm.

3 0
3 years ago
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