Wednesday

July 23, 2014

July 23, 2014

Total # Posts: 121

**Precalc and trig**

how does cos^2x(cos^2a – sin^2a) - 2sinacosasinx = cos^2x(cos^2a – sin^2a) – 2cosxcosasinxsina

**Precalc and trig**

thanks! i accidentally posted this twice

**Precalc and trig**

cos^2 (x+a)-sin^2(a)= (cos x)(cos (2a+x)) prove using only side i worked on the left side...

**spanish help quick!!! i have to submit my answers!**

so we are learning the pred. v imperfect but i dont know when to use which i sort of have an idea like habitual inturrupting etcetc but i get them all wrong El lunes pasado yo _tuvé__ una discusión con un compañero de clase. La discusión __comenzaba...

**AP Spanish**

so we are learning the pred. v imperfect but i dont know when to use which i sort of have an idea like habitual inturrupting etcetc but i get them all wrong El lunes pasado yo _tuvé__ una discusión con un compañero de clase. La discusión __comenzaba...

**trig**

find sin 2x if tan x=2 cosx>0

**Trig**

given sin(4x)=5/13 in Q II find Tan(2x) and cos(2x)

**4th grade english**

Blue whales and fin whales ( get or gets) to be over 80 feet long. Would the correct answer be get.

**4th grade spelling**

witness's witnesses' Is this the correct spelling for the two words above?

**4th grade English**

Would the word an be capital or lower case in an Apple a Day

**4th grade English**

Would an be capital or lower case an Apple a Day

**4th grade English**

a book titled an Apple a Day, would an and a be lower case or capital?

**Physics help again!**

A ball is thrown horizontally off a 35 m tall building. It hits the ground 80 m from the bottom of the tower. a. what is the balls time in the air [i got 2.67] b. what is its initial velocity? [i got 0] c. What is the magnitude and direction of its velocity as it strikes the g...

**physics help!!**

thank you!!

**physics help!!**

a plane moving horizontally at 120 m/s drops a package from an elevation of 240 m. How far did the package go before it hit the ground? Step by step directions please!

**Finance**

Which security offers a higher effective annual yield? a) a three month bill selling at $9764 b) a six month bill selling at $ 9539 And calculate the bank discount yield on each bill.

**music**

did the rich watch musicals when they first came out? who invented musicals?

**art**

can anyone help? i need to find out what relief means for my art homework

**music**

i need to find out what makes a good composer,i'm in year 11

**science**

what are the 5 branches of physics?

**English**

what is kravadar