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3 years ago

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

7 0

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