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Lerok [7]
3 years ago
11

Get correct for brainleist!

Mathematics
1 answer:
Elan Coil [88]3 years ago
4 0

Answer:

the tird one

Step-by-step explanation:

the asking you like for the number who repeat I hope it help if need more explanation tell me

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Hello please help i’ll give brainliest
valkas [14]

Answer:

gravitational potential energy

Step-by-step explanation:

cuz its being lifted

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2 years ago
Find+the+positive+value+for+α+if+the+radius+of+the+circle+3x^2+3y-6αx+12y-3α=0+is+4
Alik [6]

Answer:

\alpha=3

Step-by-step explanation:

<u>Equation of a Circle</u>

A circle of radius r and centered on the point (h,k) can be expressed by the equation

(x-h)^2+(y-k)^2=r^2

We are given the equation of a circle as

3x^2+3y^2-6\alpha x+12y-3\alpha=0

Note we have corrected it by adding the square to the y. Simplify by 3

x^2+y^2-2\alpha x+4y-\alpha=0

Complete squares and rearrange:

x^2-2\alpha x+y^2+4y=\alpha

x^2-2\alpha x+\alpha^2+y^2+4y+4=\alpha+\alpha^2+4

(x-\alpha)^2+(y+2)^2=r^2

We can see that, if r=4, then

\alpha+\alpha^2+4=16

Or, equivalently

\alpha^2+\alpha-12=0

There are two solutions for \alpha:

\alpha=-4,\ \alpha=3

Keeping the positive solution, as required:

\boxed{\alpha=3}

8 0
3 years ago
A archer releases an arrow with an initial velocity of 30 feet per second at a height of 3 feet. The path the arrow takes
Alekssandra [29.7K]

Answer:1.97

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
The area of this square
ANEK [815]

It appears as if 12cm is half the length of the side so we can assume that the total length of one side is 24cm.


The area of a square is given by the equation A=s^{2} where s is the length of the side.  

A=24^{2}

A=576


The area of this square is 576cm2.


Hope this helps!

7 0
3 years ago
Which geometric figure contains exactly two perpendicular lines
Leviafan [203]

Answer:

Like a square, a rectangle has lines that are perpendicular to two other lines. This means it also has four right angles.

Step-by-step explanation:

4 0
3 years ago
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