Thursday

February 23, 2017
Total # Posts: 399

**Trig**

find the exact value of the expression using the provided information. Find Tan (S+T) given that cos s=1/3 with s in quad I and sin T= -1/2 with T in quad IV

*February 18, 2011*

**Trig**

tan 75 (show all work please)

*February 18, 2011*

**Trig**

No it is to find the exact value of the expression using the provided information. Find Tan (S+T) given that cos s=1/3 with s in quad I and sin T= -1/2 with T in quad IV

*February 18, 2011*

**Trig**

find (s+t) given that cos s=1/3 with s in quad I and sin T=-1/2 with t in quad IV

*February 18, 2011*

**chemistry**

25.5 degrees C

*February 13, 2011*

**Pre algebra**

-3(4x+3)+4(6X+1)=43 Need to solve

*January 23, 2011*

**algebra**

How do I find a the surface area of a can that has a diameter of 4 inches and a height of 3 inches?

*January 19, 2011*

**Math**

Solve. 3p-1=5(p-1)-2(7-2p)

*January 17, 2011*

**geometry**

triangle

*January 13, 2011*

**geometry**

If AC = 20 centimeters, and BC = 16 centimeters, what does AB equal?

*January 13, 2011*

**math analysis**

how do i do cosecant x= 30/150? and how do i do cosecant x= 1500/9000

*January 9, 2011*

**7th Grade**

z + 5/7 = 3 z = 3 - 5/7 z= 2&2/7

*January 9, 2011*

**science**

Trace fossil

*January 2, 2011*

**Math**

3 x 25=75 P 75 -- -- =62.5% 100 120 cross multiply. P x 120= 120P 100 x 75=7500 7500/120=62.5%

*December 31, 2010*

**Chemistry**

Identify an inert element that is used in electrical discharge tubes.

*December 8, 2010*

**English**

Choose the correct word to complete each sentence. 1. Despite wanting to pass the exam, Julia just couldn't get down to revising. She seemed to have a mental ___ about it. a. brick b. gap c. block d. space 2. When the counsellor listened to George's problems, her non-...

*December 7, 2010*

**Maths - Probability**

Tickets numbered 1 to 1000 were sold in a raffle for which there was one prize. Mr Kahn bought all the tickets containing at least one '3' because '3' was his lucky number. What was the probability of Mr Kahn winning?

*December 4, 2010*

**2nd grade**

what is the antonym of the word smooth

*November 28, 2010*

**College physics**

A toddler is on a playground swing. When she is right in the middle going forward (to the right), then ... a).her tangential acceleration is maximal to the right. b) her tangential acceleration is zero. c) her tangential acceleration is maximal to the left. d) her kinetic ...

*November 21, 2010*

**english**

Need ideas for a 7th grade research paper. I like gymnastics and dance. any ideas?

*November 3, 2010*

**accounting**

cash balance per books 6781.50

*October 25, 2010*

**Science**

What is the power of 1,000 newtons, 3 meters and 60 seconds?

*October 25, 2010*

**College Physics**

So would I divide the problem by wf?

*October 22, 2010*

**College Physics**

A freely rotating merry-go-round on a playground has a moment of inertia of 312 kgm2 and a radius of R=2.5 m. It is rotating with ω0=2.8 rad/s when a kid of mass 45 kg is standing on its outer rim. Neglecting friction, what is going to be the angular velocity of the merry...

*October 22, 2010*

**geometry**

Q is the midpoint of PR. PQ = 3x - 5 and QR = x + 17. What is the value of x?

*September 14, 2010*

**8th grade**

graph each realation on cordanant system

*August 30, 2010*

**physics**

10^14. Divide area of pinhead by area of atom

*August 26, 2010*

**Earth Space Science**

What type of motion would have to occur to move or displace the fixed color lines produced by a gas like helium or hydrogen toward the 400 nanometer mark on the spectrum scale?

*May 4, 2010*

**physics**

If you shout across a canyon and hear an echo 3.6 s later, how wide is the canyon?

*April 27, 2010*

**accounting**

This is not enough information. You need another number. Either the original price or a discounted price or something???

*April 25, 2010*

**fractions and decimals**

15/86 is the fraction then divide 15 by 86 and you get 0.1744 that would be one option for row one. I'm not sure if you can make improper fractions but if you can it could also be 86/15 as a fraction then divide 86 by 15 5.7333 repeater. I am assuming you could arrange the...

*April 25, 2010*

**physics**

if a super dense material with a refractive index of 1.76 x10^7 what is the speed of light in this material

*April 14, 2010*

**math**

Mathematically, why is a manhole cover round?

*March 21, 2010*

**world history**

Under whose reign did the Persian empire become the greatest military power of the ancient world?

*March 14, 2010*

**chemistry**

What is the formula used to solve the problem: How many milliliters of 1.171 M HCl are required to react with 7.69 grams of CaCO3 ?

*March 4, 2010*

**Algebra 2**

Y=2/3-1 y=-x+4

*February 2, 2010*

**algebra**

if u cut any size circle 5times , what is the greatest amount of pieces i can get?

*January 6, 2010*

**math**

hi, i am in forth grade i need to know what factors means. now for my home work. can you please respond and in a way i can under stand.

*October 29, 2009*

**3 grade**

what i don't get your question and your in 3rd grade and they ask you this

*October 29, 2009*

**Algebra II**

The answer for (7+5i)+(-4+2i) is 3+7i. But I got -38-6i. I combined -28 and 10i^2 to get -38, and I combined -20i and 14i to get -6il So all together this was -28+-6i+-10, which resulted in -38-6i. Could you please tell me where I went wrong?

*October 15, 2009*

**Chemistry**

What are the characteristics of a perfect flame for a bunsen burner??

*October 13, 2009*

**Biology**

What is the role of oxygen in aerobic respiration?

*October 12, 2009*

**AP World History**

How would you compare and contrast life in foraging societies with life in agricultural societies after the Agricultural Revolutions?

*August 4, 2009*

**Algebra**

Downstream Upstream Distance=rate x time -rate: 1 hour -rate: 1 hour -time: x+y -time: x-y -distance: 17km -distance: 6km System of equations: x+y=17 2x=23 Plug in 11.5 for x x+y=17(rewrite one of the equations:either is fine) x-y=6 x=11.5km/h in one of the 11.5+y=17(plug in ...

*May 26, 2009*

**health**

The answer is D. The person who creates the data in the record. It wouldn't be the patient

*April 18, 2009*

**biology**

why are the processes of transcription necessary for life?

*April 15, 2009*

**biology**

why are the processes of transcription necessary for life?

*April 15, 2009*

**Math**

Its FOIL so -3n^2-2n-6n-4. This simplified is -3n^2-8n-4.

*February 26, 2009*

**10th grade**

What is the difference between United States and Mexican currency?

*February 26, 2009*

**Math**

All you need to do is find the total amount of rope you need so the 30 x 5 (which equals 150 feet of rope btw) You then divide by three to get the number of yards, so 150/3= 50. So Bruce needs to purchase 50 yards of rope.

*February 26, 2009*

**DNA &RNA**

That's right. Our class spent FOREVER on this, but RNA also has a different sugar type. DNA contain deoxyribose and RNA is just Ribose.

*February 26, 2009*

**4th grade**

what is prime and composite 13,37,25,117208,67

*January 30, 2009*

**Chemistry**

Calculate the volume of 0.6M HNO3 necessary to neutralize 28.55 cm3 of 0.45M KOH. please show work and detail.

*January 15, 2009*

**Chemistry**

What volume of 0.5M HNO3 is required to neutralize 25 cm3 of a 0.2M NaOH solution? please show work and detail.

*January 15, 2009*

**Chemistry-TITRATION**

A titration of 15.0 cm3 of household ammonia, NH3, required 38.57 cm3 of 0.78M HCl. Calculate the molarity of the ammonia. please show work and detail.

*January 15, 2009*

**Chemistry**

Determine wether the following acids are strong or weak? NOTE: all numbers in the chemical compounds below are subscripts belonging to the element before it, NOT COEFFICIENTS. a.)HCl b.)H2SO3 c.)HNO2 d.)H3PO2 e.)HNO4 f.)H2SO5 g.)HI

*January 14, 2009*

**math**

what relation is a doorstep to a doormat

*January 11, 2009*

**year 8 art**

I've got loads of art homework and there is one bit i'm struggling with i have to use a digital camera take a picture of a household object then distort the image using a graphics package on a computar in four different ways and im finding it hard to understand. Thanks

*December 29, 2008*

**chemistry**

What is 1.384 kg multiplied by 5.4 square meters?

*October 19, 2008*

**Chemistry**

A sheet of aluminum foil has a total area of 1.000 ft squared and a mass of 3.636 grams. What is the thickness of the foil in millimeters? (Density of Aluminum is 2.699 grams/cm cubed.)

*September 12, 2008*

**7th grade math**

How do you convert 5/16 to a decimal??

*September 12, 2008*

**Math**

Write the standard form of the equation of the circle with center 2,-3 and radius 4

*June 16, 2008*

**chemistry**

Calculate the theoretical pH after 2.50 mL and 9.50 mL of NaOH has been added in both the titration of HCl and of HC2H3O2. Indicate if the volume of NaOH is before or after the equivalence point.

*May 9, 2008*

**maths**

11/3058

*April 27, 2008*

**math**

26+4*(15-4)

*April 20, 2008*

**math**

4+1-2+3

*April 20, 2008*

**Social Studies**

What was the name of the fake government of france and who led it? Thanks so much. ^-^

*April 19, 2008*

**pre-algerbra**

-14y+12(x+y)-12x

*April 7, 2008*

**physics**

A student lifts a 4.7-kg box from the her desk, which is 0.9-m high, to a locker that is 4.1-m high. What is the bags energy relative to the desk?

*April 3, 2008*

**Physic**

What determines whether an object is a net emitter or a net absorber of radiant energy? Wood is a better insulator than glass. Yet fiberglass is commonly used as an insulator in wooden buildings. Explain.

*January 30, 2008*

**English**

What is the action verb and linking verb in this sentence: The day was warm and sunny.

*January 24, 2008*

**English**

What is the action verb and linking verb in the sentence: The day was warm and sunny.

*January 23, 2008*

**science**

a vascular plant

*January 10, 2008*

**Sociology**

i think it helps you speak better

*January 10, 2008*

**Science**

i need one more...

*January 10, 2008*

**Science**

thank you

*January 10, 2008*

**Science**

What are some examples of enviormental factors that may affect how tall a person grows to be?

*January 10, 2008*

**biology-mitosis**

what would be a factor of a cell that leads to mitosis? 4 letters. starts with s, ends in e

*November 27, 2007*

**biology-mitosis**

what is a structure that holds each chromosome to its exact copy? it begins with a "C", and has "d" as the second to last letter. 10 letters.

*November 27, 2007*

**Science project**

I need to find an object that will sink to the bottom of a glass of water, then rise to the surface within 30 seconds. I can't find that object!!

*October 24, 2007*

**math**

thank you

*October 17, 2007*

**math**

10 people are going canoeing/tubing. some people will tube, some will canoe. tubes are $7 each. canoes are $11 each. tubes hold one person. canoes hold three. if you want to spend exactly $50, how many canoes and tubes can you buy? what would be the equation for how many tubes...

*October 17, 2007*

**Math**

y-10 becuase it means it is 10 fewer than the amount y

*October 17, 2007*

**algebra**

10 people are going canoeing/tubing. some people will tube, some will canoe. tubes are $7 each. canoes are $11 each. tubes hold one person. canoes hold three. if you want to spend exactly $50, how many canoes and tubes can you buy? i know this is a linear combination question...

*October 17, 2007*

**Algebra**

get rid of the paranthesis and add .45 twice to 9.65. then combine the s's. you'll get 3s= a number. then solve

*October 17, 2007*

**geometry**

Given: Regular Hexagon ABCDEF with center K. m<BAK =m<BCK =60 degrees. Prove: Prove that ABCK is a parallelogram. Use a two column proof.

*October 2, 2007*

**Math**

i need help with math.Big time

*September 22, 2007*

**math**

How do you set up the triangle? Once the triange is set up, then what do I do? How can I use the triangle to find the cos? thanks

*August 26, 2007*

**math**

How do i find cos[arctan(3/5)] ?

*August 26, 2007*

**Math**

If the train left at 7:59 and Josh was a hundred minutes late how late would Josh be?i have a simaler question

*August 22, 2007*

**math-inequalities**

I really don't understand this stuff for example: 9b-3b+34<2b-10 and 7a+3=24 letters represent variables so they can be anything really. Once you understand this step then the rest of the problem can start to make sense. Inequalities tell you whether something is ...

*February 28, 2007*

**Georgraphy**

Why Is London so Big & Why is is where it is? Is it something to do with the river? London has a very long history and therefore is difficult to describe in such a condensed space. Go here and click on the different links to read about London in the different eras: http://www....

*January 4, 2007*

**Me again! - Science (Friction and Weight)**

Okay. I have a test coming up soon, and I was wondering how to explain Weight and Friction. Mass is the stuff inside an object, so what is weight? And how do you describe friction? Thanks for reading, hope you can help. Weight is the attraction of an object as a result of ...

*November 22, 2006*

**Food Education**

How is Sodium used in the body? I need to know this for some Food Tech reaserch. Thanks. Thank you for using the Jiskha Homework Help Forum. The body uses sodium to regulate blood pressure and blood volume. Sodium is also critical for the functioning of muscles and nerves...

*November 19, 2006*

**geography**

my 9 year old daughter is learning about the caribbean on what i don't know please could any one help with any info on the caribbean or latin america wikipedia should have some information. West Indies - Bahamas. Bermuda Triangle? Last but not least perhaps your daughter ...

*October 30, 2006*

**History**

Hi, I'm doing a History Project on the First Emperor of China, Qin Shihuangdi, and wondered if anyone could tell me when he was born and when he died? I have been on lots of websites but the dates are all in the wrong order, making it look like he died before he lived. ...

*October 14, 2006*

**Religious Education (R.E)**

Hello, I am doing some homework on the Langar (Free Kitchen for Sikh’s), and would really appreciate it if someone could tell me some food they might have on the menu? For instance: What they could have for Starters, Main Course and Dessert. I just need a little help as I...

*October 10, 2006*

**science**

what happens to the particles in a liquid as the temperature frops? I don't know what happens as the temperature frops; however, if it DROPS :-), and we are talking about a pure liquid and not a solution, then the molecules become less and less energetic and the molecules ...

*September 30, 2006*

**coordinate geomoetry**

PLEASE SEND ME THE ANSWERS TO MY EMAIL ADDRESS Find the midpoint of PQ if P(-7, 11) and Q(1, -4). Find the area of the rectangle with vertices B(8, 0), T(2, -9), R(-1, -7) and C(5, 2). Find the area of a triangle with vertices (0, 0), E(3, 1) and F(-2, 6). Given a rhombus with...

*July 12, 2006*