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3 years ago

5

How? Do you do this??

2 answers:

Gre4nikov [31]3 years ago

5 0

X=5/2,x=2
i cant explain it but if you got to symbolab.com and input the equation it will solve and show you the steps

xeze [42]3 years ago

5 0

You can down load photo math an itll answer it

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What is the area of a circle of 11 using pie

ehidna [41]

94.985 using 3.14 or 95.033 using pie directly

Step-by-step explanation:

This is the answer if the radius is 5.5, half of 11. square it multiply by pie

7 0

3 years ago

Read 2 more answers

12x+16y=-15 in slope intercept form ? please help

Firlakuza [10]

Answer: y = -3/4x - 15/16

Step-by-step explanation: Write in slope-intercept form, y=mx+b.

Hope this helps you out! ☺

6 0

3 years ago

A circle has the equation 2x²+12x+2y²−16y−150=0.

KonstantinChe [14]

Answer: B. The coordinates of the center are (-3,4), and the length of the radius is 10 units.

Step-by-step explanation:

The equation of a circle in the center-radius form is:

$(x-h)^{2} +(y-k)^{2}=r^{2}$ (1)

Where $(h,k)$ are the coordinates of the center and $r$ is the radius.

Now, we are given the equation of this circle as follows:

$2x^{2}+12x+2y^{2}-16y-150=0$ (2)

And we have to write it in the format of equation (1). So, let's begin by applying common factor 2 in the left side of the equation:

$2(x^{2}+6x+y^{2}-8y-75)=0$ (3)

Rearranging the equation:

$x^{2}+6x+y^{2}-8y=75$ (4)

$(x^{2}+6x)+(y^{2}-8y)=75$ (5)

Now we have to complete the square in both parenthesis, in order to have a perfect square trinomial in the form of $(a\pm b)^{2}=a^{2}\pm+2ab+b^{2}$ :

<u>For the first parenthesis:</u>

$x^{2}+6x+b^{2}$

We can rewrite this as:

$x^{2}+2(3)x+b^{2}$

Hence in this case $b=3$ and $b^{2}=9$ :

$x^{2}+2(3)x+3^{2}=x^{2}+6x+9=(x+3)^{2}$

<u>For the second parenthesis:</u>

$y^{2}-8y+b^{2}$

We can rewrite this as:

$y^{2}-2(4)y+b^{2}$

Hence in this case $b=-3$ and $b^{2}=9$ :

$y^{2}-2(4)y+4^{2}=y^{2}-8y+16=(y-4)^{2}$

Then, equation (5) is rewritten as follows:

$(x^{2}+6x+9)+(y^{2}-8y+16)=75+9+16$ (6)

<u>Note we are adding 9 and 16 in both sides of the equation in order to keep the equality.</u>

Rearranging:

$(x-3)^{2}+(y-4)^{2}=100$ (7)

At this point we have the circle equation in the center radius form $(x-h)^{2} +(y-k)^{2}=r^{2}$

Hence:

$h=-3$

$k=4$

$r=\sqrt{100}=10$

8 0

3 years ago

I’m desperate Please help don’t answer if you don’t know

statuscvo [17]

Answer:

I'm pretty sure the equation would be b=4×12, the answer would be b=$48.00

Step-by-step explanation:

3 0

3 years ago

People keep on giving me different answers for this one, I really do need help please...

guajiro [1.7K]

Hi there!

So if BC and DA are the same, then BA and CD are also the same...

The only one that’s left is BD.

Therefore, the shortest side is BD.

5 0

3 years ago