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Since each term is  3r  times the preceding term, this will be a geometric series for whatever number you choose for r.

Interval form:  (-infinity, infinity).

7x² + nx -11 could be factored as:

(7x - 1)(x + 11)

(7x + 1)(x - 11)

(7x - 11)(x + 1)

(7x + 11)(x - 1)

Multiplying these out will give you the various possibilities for n ...

Wilma    (x-1)(x-6)  =   x^2 -7x + 6       but the '-7' is wrong and the 6 is correct

Greg      (x+1)(x+4) = x^2 + 5x + 5       but the c = 5 is wrong

SO the equati0n must be    x^2 + 5x + 6       which factors to   (x+3)(x+2)      roots   -3  and  -2

They are opposite angles of intersecting lines so they have to equal each other

3x+30 = 2x-80    solve for 'x'   then angle 3 = x+30

oh....

yes it is

22 all the coffins open in the end are perfect squares. 

Well it's whatever age the person reading it is . . . so in this case how old I am. 

We want csc x + cot x to get into terms of sin and cos, that means the first box that you drag in is 1/sinx + cosx/sinx as this is the first step that you could possibly take. They have the same base so we can combine it to be (1+cosx)/sinx. We then multiply the function by sinx/sinx which turns the denominator into sin^2x which is also (1-cos^2x), so right now the function is (sinx(cosx))/(1-cos^2x). We can then break the denominator into two pieces by difference of squares, so we have (sinx(1+cosx))/((1+cosx)(1-cosx)). the (1+cosx) in both the numerator and denominator cancel out and we are left with the identity.

Wait why? I learened it in jack and annie when i was like in 1st grade! Its a good one though!

OH ITS THAT ONE I LEARNED IT A LONG TIME AGIOGOOGOOGOG

yes it is!

it took me a while though... a very long while

An echo 

Are you sure? I entered in that answer and it was wrong.

Wait Oh im so dumbbbb.. YAH I Solved it as i = -1...... Well looks like im kind of dumb.

Okay so expanding (1+i)(2+i) we get

2+i+2i+i^2 = 

2+3i-1 = 

1+3i

Multiplying (1+3i)(3+i) we get

3+i+9i+3i^2 = 

3+10i+3(-1) =

10i

Hope that helps!

Wait but its multiplacation..... So it should equal 0 right? Cuz i = Sqrt(-1)

hmmm that wasn't right.... :(

I got 6 + 12 i.

a) Fill this in like a multiplication table:

b) There are a total of 9 possible scores that one can get. Two of them result in a 6, meaning that the possibility of getting a 6 is 2/9, or 1/3, or 33.3%.

c) Do the same thing like you did in b. There are a total of 9 possible scores. 5 of them being over 10, that means the possibility to get a score over 10 is 5/9, or 55.55%

2+i srry

Did you mean for it to be (2+1) or did you mean (2+i)? Clarify that please and then I'd be happy to help!