3 years ago

Plz, Help me with this!!!! Plz, Help me with this!!!!

Mathematics

2 answers:

Kazeer [188]3 years ago

6 0

Answer:

-3x-4

Step-by-step explanation:

first you add 5x and -8x to get -3x, then you get -4.

Maslowich3 years ago

3 0

Answer:

-3x+2

Step-by-step explanation:

Since it's addition you just combine all like terms so,

5x+4

-8x-2

= -3x+2

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3 years ago

Find the sum of -2 + 3i and -1- 2i.

blondinia [14]

Answer:

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2 years ago

Is square root 1 minus sine squared theta = cos Θ true? If so, in which quadrants does angle Θ terminate?

Cloud [144]

Answer:

True; quadrants I & IV

Step-by-step explanation:

We know the relation between sine and cosine function which is given by

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Take square root both sides. When ever we take square root we need to write the solution in plus minus form

$\sqrt{\cos^2 \theta}=\pm\sqrt{1-\sin^2 \theta}$

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$\cos \theta=-\sqrt{1-\sin^2 \theta}, \sqrt{1-\sin^2 \theta}$

If Θ is in quadrants I and IV then the value will be positive and if Θ is in II and III quadrant then the value is negative.

Hence, if Θ is in quadrants I & IV, then we have

$\cos \theta=\sqrt{1-\sin^2 \theta}$

Thus, the correct option is: True; quadrants I & IV

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3 years ago

Read 2 more answers

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I hope this helps you

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