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Akimi4 [234]
3 years ago
12

Pls hurry. thank you.

Mathematics
1 answer:
Cloud [144]3 years ago
3 0

Answer:

AC=BD=20 units

Step-by-step explanation:

given: the figure is a rhombus

therefore AB=BC=CD=DA=10 units (since given)

angle A= 60°

cos60°=AB/BD

1/2=10/x

therefore x=10×2

=20 units

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Colt1911 [192]

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Further explanation:

We will use the comparison of co-efficient method for finding the value of a

So,

Given

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As it is given that

(x^2 - 3x + 4)(2x^2 +ax + 7) = 2x^4 -11x^3 +30x^2 -41x +28

In this case, co-efficient of variables will be equal, so we can compare the coefficients of x^3, x^2 or x

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Keywords: Polynomials, factorization

Learn more about factorization at:

  • brainly.com/question/1414350
  • brainly.com/question/1430645

#LearnwithBrainly

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<u>Algebra I</u>

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