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olasank [31]
3 years ago
11

Tan theta * tan 2theta = 1, cos 2theta =?

Mathematics
1 answer:
lilavasa [31]3 years ago
6 0

Answer:123445

Step-by-step explanation: sorry I need to answer a question to get a free answer so sorry

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Factorise the following:<br><img src="https://tex.z-dn.net/?f=%7B3x%7D%5E%7B2%7D%20%20%2B%205x%20-%2012" id="TexFormula1" title=
Fed [463]

Answer:

(x + 3)(3x - 4)

Step-by-step explanation:

Given

3x² + 5x - 12

Consider the factors of the product of the coefficient of the x² term and the constant term which sum to give the coefficient of the x- term.

product = 3 × - 12 = - 36 and sum = + 5

The factors are + 9 and - 4

Use these factors to split the x- term

3x² + 9x - 4x - 12 ( factor first/second and third/fourth terms )

= 3x(x + 3) - 4(x + 3) ← factor out (x + 3) from each term

= (x + 3)(3x - 4)

Thus

3x² + 5x - 12 = (x + 3)(3x - 4) ← in factored form

6 0
3 years ago
What’s 2 3/4 divided by 2??
Alex17521 [72]

Answer: 1.375


Step-by-step explanation:

Im not good at it, but this may be right?

5 0
3 years ago
Read 2 more answers
In need of geometry help, once again my stupid brain cant remember anything.
melomori [17]

You cannot rely on the drawing alone to prove or disprove congruences. Instead, pull out the info about the sides and angles being congruent so we can make our decision.

The diagram shows that:

  • Side AB = Side XY (sides with one tick mark)
  • Side BC = Side YZ (sides with double tickmarks)
  • Angle C = Angle Z (similar angle markers)

We have two pairs of congruent sides, and we also have a pair of congruent angles. We can't use SAS because the angles are not between the congruent sides. Instead we have SSA which is not a valid congruence theorem (recall that ambiguity is possible for SSA). The triangles may be congruent, or they may not be, we would need more information.

---------------

So to answer the question if they are congruent, I would say "not enough info". If you must go with a yes/no answer, then I would say "no, they are not congruent" simply because we cannot say they are congruent. Again we would need more information.

3 0
3 years ago
Does the graph represent a linear expression?<br><br> Yes or No<br><br> Please answer fast!
Virty [35]
Yes it does goes over the c axis
3 0
3 years ago
A) Se, com 10 quilogramas de laranja, é possível fazer 6 litros de suco,
julia-pushkina [17]

Answer:

tcyfcfvfvyfvufvtuvyrvyrv tv tvgcrvajYvu

Step-by-step explanation:

IDEONKNOEWHIARTUEITIKIONGABOUTI

3 0
3 years ago
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