OpenStudy (carolina4567):

MEDAL :)

4 years ago
OpenStudy (carolina4567):

Using the following equation, find the center and radius: x2 −2x + y2 − 6y = 26 The center is located at (−1, −3), and the radius is 36. The center is located at (1, 3), and the radius is 36. The center is located at (−1, − 3), and the radius is 6. The center is located at (1, 3), and the radius is 6.

4 years ago
OpenStudy (carolina4567):

@amistre64

4 years ago
OpenStudy (carolina4567):

@israr000

4 years ago
OpenStudy (carolina4567):

I woul say C

4 years ago
OpenStudy (carolina4567):

*Would

4 years ago
OpenStudy (carolina4567):

Help

4 years ago
OpenStudy (amistre64):

you would need to complete the square to be sure

4 years ago
OpenStudy (amistre64):

x2 −2x +1 + y2 − 6y +9 = 26 +1 +9 , radius of 6 is looking good (x-1)=0 and (y-3)=0 do not give us a center at -1,-3

4 years ago
OpenStudy (carolina4567):

Right so looking at this our only solution would be D

4 years ago
OpenStudy (amistre64):

correct

4 years ago
OpenStudy (carolina4567):

YAY! I have one more similar to this one. Give me a sec

4 years ago
OpenStudy (carolina4567):

A circle is represented by the equation below: (x + 8)2 + (y − 3)2 = 100 Which statement is true? The circle is centered at (−8, 3) and has a radius of 20. The circle is centered at (8, −3) and has a diameter of 20. The circle is centered at (8, −3) and has a radius of 20. The circle is centered at (−8, 3) and has a diameter of 20.

4 years ago
OpenStudy (carolina4567):

So I would say B idk about u

4 years ago
OpenStudy (amistre64):

your issue seems more to do with finding a center on these. the center will zero out your x and y parts: x+8=0 y-3=0

4 years ago
OpenStudy (carolina4567):

Ok, Then we..............

4 years ago
OpenStudy (amistre64):

then we choose the one that has the right center

4 years ago
OpenStudy (carolina4567):

So supposing this, it would mean that D right?

4 years ago
OpenStudy (amistre64):

yes

4 years ago
OpenStudy (igreen):

@amistre64 Is it okay to explain something then give the answer? Or do you HAVE to lead them to it?

4 years ago
OpenStudy (carolina4567):

YAY! OMG UR AN AWSOME TEACHER

4 years ago
OpenStudy (amistre64):

you have to lead them to it, and then correct them as needed.

4 years ago
OpenStudy (carolina4567):

:)

4 years ago
OpenStudy (igreen):

Oh

4 years ago
OpenStudy (carolina4567):

I have this one too. I hope im not too much of a bother. Snowy's Snow Cones has a special bubble gum snow cone on sale. The cone is a regular snow cone that has a spherical piece of bubble gum nested at the bottom of the cone. The radius of the snow cone is 3 inches, and the height of the cone is 5 inches. If the diameter of the bubble gum is 1.1 inches, what is the closest approximation of the volume of the cone that can be filled with flavored ice? Use 3.14 for pi. 31.87 cubic inches 36.92 cubic inches 46.40 cubic inches 62.87 cubic inches

4 years ago
OpenStudy (carolina4567):

I was saying C but my sister says its B

4 years ago
OpenStudy (amistre64):

this one has a few steps to it determine the volume of a truncated cone, and subtract the volume of half a sphere.

4 years ago
OpenStudy (carolina4567):

My sis did the steps and got the answer B it looks pretty convincing but im not sure

4 years ago
OpenStudy (carolina4567):

But after considering I and doing the math we came up to A. What do u think @amistre64

4 years ago
OpenStudy (amistre64):

The radius of the snow cone is 3 inches, and the height of the cone is 5 inches. 5h to 6d ratio If the diameter of the bubble gum is 1.1 inches, 5(1.1)/6 to 6(1.1)/6 .916667 height with a radius of .55 5 * 3^2 pi/3 - .916667*.55^2pi/3 = volume of truncated cone subtract from that: 1/2 (4pi .55^3/3) what is the closest approximation of the volume of the cone that can be filled with flavored ice? Use 3.14 for pi.

4 years ago
OpenStudy (amistre64):

5 * 3^2 pi/3 - .916667*.55^2pi/3- 1/2 (4pi .55^3/3) the wolf says C is the better route

4 years ago
OpenStudy (amistre64): 4 years ago
OpenStudy (carolina4567):

Yay i was right :)

4 years ago
OpenStudy (carolina4567):

So this is the oficial last one :P

4 years ago
OpenStudy (carolina4567):

Lines CD and DE are tangent to circle A as shown below:

4 years ago
OpenStudy (carolina4567):

If arc CE is 130°, what is the measure of ∠CDE? 20° 40° 42.5° 50°

4 years ago
OpenStudy (carolina4567):

4 years ago
OpenStudy (carolina4567):

So after calculations we got to B what do u think? did we do good.

4 years ago
OpenStudy (amistre64):

what were the calcs you used?

4 years ago
OpenStudy (carolina4567):

Well they used postulates. Idk why but I was going to say it was C bcause its most resonable.

4 years ago
OpenStudy (carolina4567):

bcause since it is 130 degrees the other 42.5 would be better in then 40

4 years ago
OpenStudy (amistre64):

what is the sum of the inside angles of a square (a regular quadralateral)?

4 years ago
OpenStudy (carolina4567):

is it not 180

4 years ago
OpenStudy (amistre64):

trianlge is 180 square is 4*90 = 360

4 years ago
OpenStudy (amistre64):

we are given, x + 90+90+130 = 360 in this case

4 years ago
OpenStudy (carolina4567):

Ohhh

4 years ago
OpenStudy (amistre64):

we could also do an average ... (360-130)-130 -------------- 2

4 years ago
OpenStudy (carolina4567):