Thursday

December 8, 2016
Total # Posts: 66

**Nature Science**

If a typhoon hits an island without any person, is that a disaster?

*December 6, 2016*

**Pre-calculus**

Convert cartesian equation to polar form 1. x^2+y^2=4x 2. (x^2+y^2)^2=6(x^2-y^2)

*December 4, 2016*

**Science**

Direction: Place a big mug, a plastic drinking glass and an empty glass bottle on the table with the big mug at the center, the drinking glass at the edge of the table, and the bottle anywhere on the table. With the force , shake the table and observe what happens to the mug, ...

*November 28, 2016*

**Trigonometry**

Evaluate arctan(cot10Pi/9) sec(arccos(-1/6) csc(arcsec(5/3) sin(2 arccos(sqrt5/5)

*November 27, 2016*

**Trigonometry**

arctan(cot10Pi/9)

*November 27, 2016*

**Trigonometry**

Evaluate please: a.) arcsin(sin 13pi/16) b.) arccos(cos[-pi/18]) c.) arcsin(sin pi/18 d.) arcsec(-?2) e.) arctan(-?3/3)

*November 26, 2016*

**Pre-calculus**

prove the identity sin2x-sin2y/sin2x+sin2y=tan(x-y)/tan(x+y)

*November 19, 2016*

**Pre-calculus**

prove sin(x+y)+sin(x-y)/cos(x+y)+cos(x-y)=tanx

*November 19, 2016*

**Pre-calculus**

If sin2x=7/25, siny=-2/sq root of 13, cot y>0, and -pi/4<x<pi/4, find sin(2y-a)

*November 19, 2016*

**Pre-calculus**

Prove the following identities. 1. 1+cosx/1-cosx = secx + 1/secx -1 2. (tanx + cotx)^2=sec^2x csc^2x 3. cos(x+y) cos(x-y)= cos^2x - sin^2y

*November 18, 2016*

***** MATH, PLEASE HELP! **

Solve 5x^-5/x^-4x+3. THANK YOU!

*November 9, 2016*

**MATH - HELP PLEASE**

The length of a rectangle is 3yd less than twice the width, and the area of the rectangle is 65ydsquare. Find the dimensions of the rectangle.

*November 9, 2016*

**MATH - PLEASE HELP!!**

The length of a rectangle is 3yd less than twice the width, and the area of the rectangle is 65ydsquare. Find the dimensions of the rectangle.

*November 9, 2016*

**Physics**

An Olympic long jumper is capable of jumping 8.44m. Assuming his horizontal speed is 5.644m/s as he leaves the ground, how high does he go?

*October 30, 2016*

**Trigonometry**

how do i evaluate this? 1+tan 200(degrees) tan 80(degrees)/tan200(degrees)-tan 80(degrees)

*October 15, 2016*

**Pre-calculus**

Evaluate sin16° cos29° + cos16° sin29°

*October 15, 2016*

**Pre-calculus**

Evaluate sin 7pi/12. Using sum, difference, and cofunction identities

*October 15, 2016*

**Pre-calculus**

Find the acute angle between the lines 2x-3y-6=0 and x+5y-20=0

*October 15, 2016*

**Pre-calculus**

Derive an identity that transforms sin(α+β+γ) into a sum of products of sines and/or cosines of the individual numbers α, β, γ.

*October 15, 2016*

**Pre-calculus**

If sin x=-3/5 and sec x>0, find all the other circular function values of x

*October 15, 2016*

**physics **

a car starts from rest and accelerates uniformly to reach a speed of 21 m/s in 7.0s. What was the speed of the object after 2.0 seconds?

*October 11, 2016*

**Trigonometry**

Show that the following are not trigonometric identities 1.tan 2x = 2tan x 2. sec x= sqr rt 1+tan^2 x 3. sin(x+y)=sin x +sin y

*October 1, 2016*

**algebra**

.75(8x-24)-4x=-182 -492-18+328=-182 -510+328=-182 -182=-182 if x=-82

*October 1, 2016*

**algebra**

solve for x 0.75(8x-24)-4x=-182 6x-18-4x=-182 2x=-182+18 2x=-164 x=-82

*October 1, 2016*

**Trigonometry**

A weight hanging from the end of a spring is pulled 8 inches below its rest position. When released, the weight then exhibits simple harmonic motion, with period 1/2 second. Find an equation describing its motion

*October 1, 2016*

**Physics**

Determine the mass of a pasteboard with area 75.0cm

*September 15, 2016*

**Maths**

all the integer values of -4 < 2x -6 < 12

*June 19, 2016*

**Math**

3P = s Ps = 3

*March 15, 2016*

**Math**

The formula for finding the perimeter of an equilateral triangle is P = 3s. How can you transform the formula so that it can be used to determine the length of one side of the triangle when given the perimeter?

*March 15, 2016*

**math with application**

If 12 % of a radioactive substance decays in 7 hours, what is the half-life of the substance? Carry out all calculations exactly, then round the final answer to three decimal places. The half life is what hours?

*October 16, 2015*

**Math**

Insert grouping symbols to make the following sentence true: 160 = 8 * 16 + 12 - 4 / 2

*September 15, 2015*

**The Giver**

It's D because I am in connection acedmey

*May 22, 2015*

**Geometry **

A rectangular quilt's length is twice the length of a rectangular picture, and the quilt's width is three times the width of the same picture. The area of the picture is 2 square feet. What is the area of the quilt, in square feet?

*March 26, 2015*

**factorization**

How did you get 891? I'm confused on that... PLZ explain!

*February 6, 2015*

**Do newspapers, magazines, television, radio, movie**

Im not sure what directing to go for this essay, i have changed it 3 times. can someone tell me if this would be correct? The answer is media doesn't decide what is important, The creators put out there what they think will catch peoples eyes, boring doesn't sell. Most...

*January 12, 2015*

**Stats**

But, we know that the 5 came up two times in the first eight rolls.

*August 22, 2014*

**Stats**

Sally rolls a fair number cube 8 times and gets a 5 twice. What is the experimental probability that on her next roll, she will roll a 5? I know that experimental probability is f/n, so the number of trials is now 9, but is the number of times Sally roll a 5 two times or three?

*August 22, 2014*

**Math**

You want to conduct a survey to find out what sport the students at your school prefer to play. a) You interview 20 boys playing football at lunch. Is this a random sample? explain b) The survey question you ask is, ''What is your favorite sport to play?'' Is ...

*April 29, 2014*

**Science 8th grade**

What gets hot and cold faster, solid or gas and why?

*March 22, 2013*

**chemistry PLEASE HELP**

How many milligrams of sodium azide will produce 8.35 Liters of N2 at STP???

*March 7, 2013*

**Math I need help Please help me!!!!!!**

A car is traveling at a rate of 54 miles per hour. What is the car's rate in feet per second? How many feet will the car travel in 20 seconds? In your computations, use the fact that 1 mile is equal to 5280 feet.

*January 30, 2013*

**Physics**

The cup becomes positively charged and I know this 100% the right answer.

*October 9, 2012*

**Biochem**

1 ml of whole blood is collected and centrifuged to obtain a plasma sample. The volume of the plasma sample is 600 microlitres. A 1 in 4 dilution of the plasma is made and analysed using a cholesterol assay like the one you performed in the laboratory. 10 microlitres of both ...

*September 30, 2012*

**Biochem**

1 ml of whole blood is collected and centrifuged to obtain a plasma sample. The volume of the plasma sample is 600 microlitres. A 1 in 4 dilution of the plasma is made and analysed using a cholesterol assay like the one you performed in the laboratory. 10 microlitres of both ...

*September 30, 2012*

**Algebra**

the phone company has two plans for cell phones. the first plan calls for a monthly fee of 35.00 with unlimited calling. The other plan is a monthly fee of 15.00, with a 0.50 fee for every minute over 100 used in a month. What is the greatest number of minutes that you can use...

*August 27, 2012*

**math**

first do what is in perenthises then do exponints then multiply then divide then add then subtract. you can remember this by doing p e m d a s pemdas!!!!!!!!!!

*May 17, 2012*

**Jobs(9th)**

you should reasearch some real interior designers and look up all of your questions

*April 2, 2012*

**math**

6/?=18/?=?/12 (fractions)

*April 2, 2012*

**Science**

the answer is letter c think of food food is chemical energy

*April 2, 2012*

**geometry**

40 multiplyed by 12 equalls area

*April 2, 2012*

**math help needed**

thanks CON

*April 2, 2012*

**math help needed**

what is 5 percent of 40

*April 2, 2012*

**Geometry**

plus wouldnt the answer be 36 because there both square and there distance isnt far

*April 2, 2012*

**Geometry**

whats a ratino and then ill help because i have no idea what that means

*April 2, 2012*

**math**

i know but thanks anyway

*April 2, 2012*

**math**

what

*April 2, 2012*

**math**

What is 5 percent of 40

*April 2, 2012*

**math**

you dot need a calculator unless you memorized the area and you don't need tape unless its used to hold down string

*March 29, 2012*

**physics**

A triangular plate with a non-uniform areal density has a mass M=0.700 kg. It is suspended by a pivot at P and can oscillate as indicated below. Its center of mass is a distance d=0.200 m from the pivot axis and its moment of inertia about an axis through the CM and parallel ...

*December 4, 2011*

**math **

5,25,50,10 what are the next 3 numbers?

*October 3, 2011*

**Chemistry**

How many grams of KOH will be needed to boil a liter of cold water?

*December 12, 2010*

**Geometry**

Point P lies in plane M. How many circles are there in plane M that have center P and a circumference of 6π inches? a) none b) one c) two d) four e) more than four

*July 7, 2010*

**Math**

aflyercracker

*January 5, 2009*

**AP World History**

I am analyzing the same DBQ, is this a good thesis? Both Han China and the Roman Empire were highly advanced in the development of technology, and both empires had very practical, organized and precise mechanized skills, yet the Romans valued their technology for its beauty ...

*October 14, 2008*

**mat?h**

What would the answer be to 4m+(-3n)+n? -3n squared +4m 4m+(-3n)+n = 4m + n(-3 +1) = 4m +(-2n) = 2(2m -n)

*October 19, 2006*

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