Can someone please help 3x+3(x+y)

Mathematics

2 answers:

GrogVix [38]2 years ago

8 0

Hope you understand :)

arsen [322]2 years ago

5 0

Answer:

6x +3y

Step-by-step explanation:

3x + 3(x+y)

3x + 3x +3y

6x +3y

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GalinKa [24]

Answer:

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Which equation represents a hyperbola with a center at (0,0), a vertex at (0,60), and a focus at (0,-65)

Leona [35]

Given that the hyperbola has a center at (0,0), and its vertices and foci are on y-axis. This, the equation of the hyperbola is of the form
x²/a²-y²/b²=-1 (a>0, b>0)
In the equation, vertices are (0, +/-b) .
Thus,
b=60
Foci (0,+/-√(a²+b²))
thus
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hence solving for a²
a²=65²-60²
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a²=25²
hence the equation is:
x²/25²-y²/60²=-1

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kvasek [131]

Answer:

25°

Step-by-step explanation:

The angle of a right triangle is always 90°. 90-35=51. 25 times 2 is 50 plus 1 is 51, so x is 25°.

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