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3 years ago

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Mathematics

2 answers:

LenaWriter [7]3 years ago

7 0

Answer:

B 27.5

Step-by-step explanation:

(64 - 9)/(4 - 2)

55/2

27.5

ElenaW [278]3 years ago

3 0

Answer:

The answer is C

Step-by-step explanation:

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Prove that: (a2 - b2)3 + (b2-c2)3+ (c2-a2)3 = 3 (a+b) (b+c) (c+a) (a-b) (b-c) (c-a).

Vanyuwa [196]

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$R=3(a+b)(a-b)(b+c)(b-c)(c+a)(c-a)\\\\=3(a^2-b^2)(b^2-c^2)(c^2-a^2)\\\\=3(a^2b^2-a^2c^2-b^4+b^2c^2)(c^2-a^2)\\\\=3(a^2b^2c^2-a^4b^2-a^2c^4+a^4c^2-b^4c^2+a^2b^4+b^2c^4-a^2b^2c^2)\\\\=3(-a^4b^2+a^2b^4-b^4c^2+b^2c^4-a^2c^4+a^4c^2)\\\\L=R$

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3 years ago

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IRISSAK [1]

so did you get what I solved the answer is D ok

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3 years ago

Select all radical expressions that are equivalent to 3 4/7

enot [183]

The second and the third one because first is the same as 3 4/7 and 81=3^4

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3 years ago

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PLS HELP ME GIVING 43 POINTS I GIVE BRANLIEST PLS HELP ME FOR THIS TEST ITS MATH SUPER EZ

Naya [18.7K]

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Step-by-step explanation:

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3 years ago

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What is the correct answer..

solong [7]

Answer:

64 feet

Step-by-step explanation:

To find the height of the kite we use sin trigonometric ratio.

Let the height of the kite from the ground be x feet.

$\therefore \: \sin 40 \degree = \frac{x}{100} \\ \\ \therefore \: 0.6427876097= \frac{x}{100} \\ \\ \therefore \: 0.6427876097 \times 100= x \\ \\ \therefore \:x = 64.29 \\ \\ \therefore \:x = 64 \: feet$

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3 years ago