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3 years ago

Plz help me will give brainlyest

Mathematics

1 answer:

Roman55 [17]3 years ago

7 0

Answer:

20 flowers

Step-by-step explanation:

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Which of the following is an example of the Associative Property?

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(13 + 20) + 15 = 13 + (20 + 15)

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3 years ago

Which of the following are identities? Check all that apply

Natasha2012 [34]

Answer:

A, C

Step-by-step explanation:

Actually, those questions require us to develop those equations to derive into trigonometrical equations so that we can unveil them or not. Doing it only two alternatives, the other ones will not result in Trigonometrical Identities.

Examining

A) True

$\frac{1-tan^{2}x}{2tanx} =\frac{1}{tan2x} \\ \frac{1-tan^{2}x}{2tanx} =\frac{1}{\frac{2tanx}{1-tan^{2}x}}\\ tan2x=\frac{1-tan^{2}x}{2tanx}$

Double angle $tan2\alpha =\frac{1 -tan^{2}\alpha }{2tan\alpha}$

B) False,

No further development towards a Trig Identity

C) True

Double Angle Sine Formula $sin2\alpha =2sin\alpha *cos\alpha$

$sin(8x)=2sin(4x)cos(4x)\\2sin(4x)cos(4x)=2sin(4x)cos(4x)$

D) False No further development towards a Trig Identity

$[sin(x)-cos(x)]^{2} =1+sin(2x)\\ sin^{2} (x)-2sin(x)cos(x)+cos^{2}x=1+2sinxcosx\\ \\sin^{2} (x)+cos^{2}x=1+4sin(x)cos(x)$

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3 years ago

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What is £42 increased by 10%

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$42+42 \cdot 10\%=42+42 \cdot 0.1=\underline{\underline{\pounds 46.2}}$

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How do you solve this math problem

zhuklara [117]

The expressions is undefined in the set of the real numbers.

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Plsss answer the question in the photo .I rlly need ur help.It s probably easy for most of you guys here .

denis-greek [22]

Box 1: None
Box 2: None
Box 3: A, B, C, E
Box 4: D

Some columns are empty because there cannot be 0 or 1 aute angle in a shape!

I hope this helped! Mark me Brainliest! :) -Raven❤️

8 0

3 years ago

Plz help me will give brainlyest​

Plz help me will give brainlyest