2 years ago

PLEASE HELP MATH!! (BRAINLIEST + MORE) questions in picture!

Mathematics

1 answer:

klasskru [66]2 years ago

7 0

Answer:

A) 2x*2 +6x -3x - 9= 2x*2 +3x -9

B) 2yx*2 +2yx +2y +3x*2 +3x +3

C) 36x*2 y +48yx +3xy*2 + 4y*2

D) 2x*3 - 4x*2 y + 3x -6y

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Someone please help me

Troyanec [42]

Pythagorean theorem is $a^{2} + b^{2} = c^{2}$
and using that sin is opposite/hypotenuse, you can find the third side of the triangle.
$11^{2}+(adjacent)^{2} = 61^{2} \\ 121+ (adjacent)^{2} = 3721 \\ (adjacent)^{2}=3600 \\ adjacent = 60$
now you know adjacent is 60, so cos=60/61

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3 years ago

In which quadrant is the point (5,-2) located?

nevsk [136]

Quadrant Four (IV) since the x coordinate is a positive and the y coordinate is a negative.

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3 years ago

F(x) = 3x + 5<br> Work out a if f(a)= -13

vekshin1

Answer:

a = - 6

Step-by-step explanation: