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Lemur [1.5K]
3 years ago
5

1. Isosceles triangles are similar.

Mathematics
1 answer:
Salsk061 [2.6K]3 years ago
5 0
1. C never. never because isosceles triangles are similar if a base angle of one is congruent to a base angle of another.

2.A AAA Similarity Postulate. An equilateral triangle is equal on each side, also AAA Similarity Postulate is were it is all equal all around

I hope this helped!
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I need help (40pts)I will give brainliest & I put the screenshot of question
gizmo_the_mogwai [7]

Answer:

168 ft

Step-by-step explanation:

To calculate the area of a parallelogram, the formula is Area=base*height

In this case, the base is 14ft and the height is 12ft

so,

14ft*12ft=168ft^2

He needs 168ft or fabric to cover the area

5 0
3 years ago
I want solution...please help me
Art [367]

sin(<em>θ</em>) + cos(<em>θ</em>) = 1

Divide both sides by √2:

1/√2 sin(<em>θ</em>) + 1/√2 cos(<em>θ</em>) = 1/√2

We do this because sin(<em>x</em>) = cos(<em>x</em>) = 1/√2 for <em>x</em> = <em>π</em>/4, and this lets us condense the left side using either of the following angle sum identities:

sin(<em>x</em> + <em>y</em>) = sin(<em>x</em>) cos(<em>y</em>) + cos(<em>x</em>) sin(<em>y</em>)

cos(<em>x</em> - <em>y</em>) = cos(<em>x</em>) cos(<em>y</em>) - sin(<em>x</em>) sin(<em>y</em>)

Depending on which identity you choose, we get either

1/√2 sin(<em>θ</em>) + 1/√2 cos(<em>θ</em>) = sin(<em>θ</em> + <em>π</em>/4)

or

1/√2 sin(<em>θ</em>) + 1/√2 cos(<em>θ</em>) = cos(<em>θ</em> - <em>π</em>/4)

Let's stick with the first equation, so that

sin(<em>θ</em> + <em>π</em>/4) = 1/√2

<em>θ</em> + <em>π</em>/4 = <em>π</em>/4 + 2<em>nπ</em>   <u>or</u>   <em>θ</em> + <em>π</em>/4 = 3<em>π</em>/4 + 2<em>nπ</em>

(where <em>n</em> is any integer)

<em>θ</em> = 2<em>nπ</em>   <u>or</u>   <em>θ</em> = <em>π</em>/2 + 2<em>nπ</em>

<em />

We get only one solution from the second solution set in the interval 0 < <em>θ</em> < 2<em>π</em> when <em>n</em> = 0, which gives <em>θ</em> = <em>π</em>/2.

5 0
3 years ago
74. A portion of a board has length x feet. The other part has
Novay_Z [31]

Step-by-step explanation:

Given that,

  • Length of the one portion of the board = x feet
  • Length of the another portion = (7x – 9) feet

According to the question,

\longrightarrow Total length = Sum of the length of the two pieces

\longrightarrow Total length = {x + (7x – 9)} feet

\longrightarrow Total length = {x + 7x – 9} feet

\longrightarrow <u>Total length = (8x – 9) feet</u>

Therefore, the total length of the board as a simplified expression in x is (8x – 9) feet.

4 0
3 years ago
Is this correct help plzz
const2013 [10]
None of the offered choices is correct.

The radical cannot be simplified. If rewritten, it must be written as something like
x \sqrt[3]{ \frac{6}{x}}
or
\frac{6x}{ \sqrt[3]{36x}}
3 0
3 years ago
Write a mathmatical proof showing the algebraic equivalency of the following equation: (2x)(3y)(4z) = 24xyz
RSB [31]
<span>Enter your equation (2x)(3y)(4z) = 24xyz on the website www.mathpapa.com. That site is amazing! I use it for all my algebra problems.
</span>
4 0
3 years ago
Read 2 more answers
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