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3 years ago

Which is the correct simplified version of the expression shown after distributing and combining like terms?

Mathematics

1 answer:

Viktor [21]3 years ago

7 0

Answer:

5x + 6

Step-by-step explanation:

-1/3(9x - 18) + 8x

Distribute

-3x + 6 + 8x

Combine Like Terms To Get:

5x + 6

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Which postulate or theorem proves that these two triangles are congruent?

mario62 [17]

Answer:

ASA postulate of congruency

Step-by-step explanation:

Here Given AE=ED and ∠BAE=∠CDE

Also if we clearly observe ∠AEB=∠CED

By ASA postulate those two triangles are congruent.

The ASA (Angle,Side,Angle) postulate states that if two triangles with two angles and the included angle are equal then the two triangles are congruent.

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Answer:

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Step-by-step explanation:

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3 years ago

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Answer:

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3 years ago

Which of the following expressions can be used to complete the equation below Secx / 1+cot^2x=

svlad2 [7]

Answer: D) Tan x sin x

Step-by-step explanation:

$\dfrac{sec}{1+cot^2}\\\\\\=\dfrac{1}{cos}\cdot \dfrac{1}{1+cot^2}\\\\\\=\dfrac{1}{cos}\cdot \dfrac{1}{1+(\frac{cos}{sin})^2}\\\\\\=\dfrac{1}{cos}\cdot \dfrac{1}{(\frac{sin^2}{sin^2})+(\frac{cos^2}{sin^2})}\\\\\\=\dfrac{1}{cos}\cdot \dfrac{sin^2}{sin^2+cos^2}\\\\\\=\dfrac{1}{cos}\cdot \dfrac{sin^2}{1}\\\\\\=\dfrac{sin\cdot sin}{cos\cdot 1}\\\\\\=\boxed{tan\cdot sin}$

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4 years ago