Question

@navk

Answer 1

Are all the lines parallel or only the ones with the marks?

Answer 2

Only the ones with the marks; The other two lines could be inclined at any angle although they do not appear so. If there would be given more information, for example, two angle are equal in both the lines, then we could consider them being parallel, but otherwise, not.

Answer 3

so since there are no other marks or indications then i guess there is nothing else to say about this image

Answer 4

yes

Answer 5

although you can say that the angles marked 1, 2 and 3, 4 are supplementary

Answer 6

why are the supplementary?

Answer 7

consecutive interior and consecutive exterior angles are supplementary for a transversal

Answer 8

wheres the transversal?

Answer 9

its used for the line that passes through two parallel lines

Answer 10

oh ok. and for this one ? I know it has to do with trigonometry but i forgot how to do it when they put the angle above like that

Answer 11

@iPwnBunnies help me

Answer 12

with that^

Answer 13

It's the same picture, I think. Anyway, so we want to distance from shore, do you think that would be the horizontal component, or the diagonal, which is the hypotenuse?

Answer 14

im not sure. Which one do you think?

Answer 15

Well, I know what it is. What do you think? ^.^
The diagonal goes to from the light to the boat, keep in mind.

Answer 16

Lol im guessing its the diagonal

Answer 17

Nuu breh. That's the longest distance, ofc, of a triangle. That distance is from the light to the boat, not the shore to the boat.
Therefore, the horizontal component gives us the distance from shore. c:
Which trig function are we gonna use for this one, given the given angle?

Answer 18

cosine?

Answer 19

tangent?

Answer 20

.-. Lol, which one. We're given an angle, and the "y" component, and we need to find the "x" component.

Answer 21

Cosine?

Answer 22

.-. No. Your test is tomorow, and you need to know this, lol.
We use tangent when we're dealing with the two legs of a triangle.
\[tangent = \frac{opposite}{adjacent}\]

Answer 23

Trust me i know im gonna fail most likely So im doing all these assignments to save my grade in the class

Answer 24

It might take some imagination, but you can picture that lighthouse as a solid white line that will complete the triangle on the right side. http://prntscr.com/3lduk3

Answer 25

so it be tan(27) 75/x?

Answer 26

\[\tan(27) = \frac{75}{x}\]

Answer 27

147.1957879?

Answer 28

Yessum

Answer 29

Kay great. Next one

Answer 30

It will be easier if we broke this up into 3 separate parts and shapes.
http://prntscr.com/3le286
We have a square, a semicircle, and a quarter circle. Can you find at least the area and perimeter of those of these?

Answer 31

Im still confused. Yo how much longer will you be online?

Answer 32

cuz i have to go but ill be at my house soon and ill log on for more help

Answer 33

Um, maybe 3 hours. but irdk if I'll be looking every minute.

Answer 34

Oh, ok.

Answer 35

Bye for now and thank you!

Answer 36

Im back and i really dont know how to do this even divided into three parts :/

Answer 37

Well, they give you the radius of that circle. Don't you see that it's half the length of a side? Can you find the area and perimeter of the square part?

Answer 38

But how do i know the measurments of the square?

Answer 39

.-. Because of the given measurement, the radius of the circle. It's half the length of one side of the square. So, the square has side length of 10 units.

Answer 40

Oh so if each side is 10 then the perimeter is 40? and the area is 100 for the square

Answer 41

Mhmm. So record that part. Now, we word on the parts of the circle.

Answer 42

Instead of looking the circle part as a half plus a quarter. We can look at it as just 3/4 of a full circle. So, what you can do is find the area and circumference of the whole circle if we had one. Then, multiply both quantites by 3/4.
Then, add the similar dimensions to the square part and you'll get the total for both parts.

Answer 43

omg too much at once

Answer 44

Elisa, pls.

Answer 45

the circumference would be 157.0796327 and then the area would be 78.53981634 and i multiply then both by 3/4, then it will be a=117.8097245 and c=58.90486226 and now i add them with the square stuff?

Answer 46

You got the circumference wrong. C = 2*pi*r

Answer 47

And don't write to like 7 decimal places. .-. One is just fine lol.

Answer 48

Hey but do i round now or wait till the end isnt it always better to wait until the end becuz if i round now it will change the answer at the end?

Answer 49

Yeah, better to wait till the end. The thing is that you should keep all those decimal places in your calculator, but don't write them out lol.

Answer 50

Lol just wanna make sure its correct! if i dont get a good grade on this stuff ill fail the class

Answer 51

Well, you did get the circumeference of the "whole" circle, as I said, lol.

Answer 52

so the circumference is 31.42 and multiplied by 3/4 it will be 23.56

Answer 53

now i do the adding

Answer 54

Yes. The perimeter and area. :3

Answer 55

Brb ill be back fast I gotta eat cuz im doing an all-nighter of geometry

Answer 56

eww

Answer 57

When i add 58.904.... +100 it still will equal the same becuz it only makes a diff in the back decimals Is that ok?

Answer 58

That's for the area, that's correct. And I'm not sure what you mean.

Answer 59

Nvm i got confused so its 158.90 and then for the perimeter it be 23.561...+40=63.56

Answer 60

Yesh. c:

Answer 61

What about this one now , is it sin(57)=8/x ?

Answer 62

YES. You're getting it c: ♥
Or nah, huehue.

Answer 63

I did mental geometry. And so then it be 8/sin(57)=9.54

Answer 64

You mean mental algebra? Lol. The rearranging part is algebraic. Unless you know what the sine of 57 degrees is and can divide it. Then damn, lol.

Answer 65

Nah i meant mental math! lol i wish i was that smart

Answer 66

Lol XD

Answer 67

This one ...

Answer 68

Ono. .-. I'm not good with pyramids and prisms. Sowwi.

Answer 69

what about this

Answer 70

Look at the curve made by going from Point B to Point A, passing through point C.
The remaining part of the curve is symbolized by x.
You know a circle is 360 degrees, what would that arc measure?

Answer 71

But doesnt it say that whole thing measures 280? so i must substract or no?

Answer 72

Yeah, that part is 280 degress. The whole circle is 360 degrees. Solve for x.

Answer 73

80 degrees

Answer 74

Yesh.

Answer 75

For this one do i just add 12 six times ?

Answer 76

No, that'll be the perimeter of the hexagon. I'm not sure about area. You might have to break it into 6 triangles. >.< Not sure.

Answer 77

Oh sorry i meant multiply chill

Answer 78

Please tell me that you know this one

Answer 79

Not too sure, and I don't wanna give you the wrong answer.

Answer 80

Ugh, I don't wanna give you the wrong answer here either. But I think it's a proportion. Find the length of the bottom leg, using the 115 side and the given angle.
Then, use a proportion.

Answer 81

this would be pythagorean th. right?

Answer 82

Yesh.

Answer 83

And this one? i bet you know this one

Answer 84

.

Answer 85

RIP Elisa's Grades.