Friday

September 30, 2016
Total # Posts: 2,819

**Math grade 12**

thankyou so much! i got the answer with some prompting :)

*November 5, 2015*

**Math grade 12**

A lighthouse with a rotating beam is located 500m south of a coastal cliff that runs west to east a) determine a relation for the distance from the lighthouse to the point the light strikes the cliff in terms of the angle of rotation x b) determine an exact expression for this...

*November 5, 2015*

**Physics**

A projectile is launched at an angle of 20.0 degrees above the horizontal with an initial speed of 88.1 m/s. The maximum height reached by the projectile will be ____ m.

*November 5, 2015*

**Math**

Simplify 5 square root of 7 end root plus 12 square root of 6 end root minus 10 square root of 7 end root minus 5 square root of 6. A.5 square root of 14 minus 7 square root of 12 B.5 square root of 7 minus 7 square root of 6 C.7 square root of 12 minus 5 square root of 14 D.7...

*November 4, 2015*

**Math**

Hi I'm having some trouble with this question: The selling price of a mathematics textbook is related to the number of pages in the text. A 300 page book sells for $25 and each additional 10 pages increases the price by $1. - What is the linear equation relating the ...

*November 4, 2015*

**Probability**

A card is drawn from a standard deck. What is the probability that the card is less than 7, given that the card is not a face card? (Assume that ace is high, and that aces are not face cards.) A: .4165 B: .3846 C: .2959 D: .6 E: .5 F: None of these

*November 3, 2015*

**Math 5th**

What is 9/9-2/3

*November 3, 2015*

**Maths**

2.45

*November 2, 2015*

**physics **

A tire rotates 140 rpm, how many rotations have been completed in 20 seconds?

*November 2, 2015*

**Economics**

Secondhand smoke globally kills more than 600,000 people each year, accounting for 1 percent of all deaths worldwide. Researchers estimate that annually secondhand smoke causes about 379,000 deaths from heart disease, 165,000 deaths from lower respiratory disease, 36,900 ...

*October 30, 2015*

**algebra**

Find the number of permutations of 5 CDs if you have a total of 23 CDs

*October 29, 2015*

**Chemistry**

Arrange the following oxides in order of increasing acidity: As2O5, P2O5, SnO2, N2O5, BaO, and SeO3. (Use the appropriate <, =, or > symbol to separate substances in the list.) I got BaO<SnO_2<As_2O_5<P_2O_5<N_2O_5<SeO_3 but its wrong

*October 27, 2015*

**HEALTH**

so whats the answer then ?

*October 21, 2015*

**Math**

I don't get how to solve this problem!help 3x(2x^3y) ^6

*October 20, 2015*

**Probability/ Stats**

I'm having trouble with this as well, do you go to USF?

*October 19, 2015*

**Statistics**

The height of a tree will be measured using a clinometer. For this device, the measurement error has a normal distribution with mean μ=0.00 meter and standard deviation σ=0.05. If the tree is exactly 30 meters tall, what is the probability that the clinometer will ...

*October 19, 2015*

**Chemistry**

Imagine that you have a 7.00 L gas tank and a 4.50 L gas tank. You need to fill one tank with oxygen and the other with acetylene to use in conjunction with your welding torch. If you fill the larger tank with oxygen to a pressure of 136 bar , to what pressure should you fill ...

*October 12, 2015*

**American Literature**

In Emily Dickinson's poem, "If you were coming in the fall," why does she not use direct rhyme in the second stanza? If you were coming in the Fall, I'd brush the Summer by With half a smile, and half a spurn, As Housewives do a Fly. If I could see you in a ...

*October 10, 2015*

**Math **

Zabato is thinking of a number. Three times the sum of the number and ten is the same as eight times the number. What is Zabatos number? Help! so confused thank you!

*October 5, 2015*

**Physics**

A race car moving at 35 m/s is uniformly slowed to a stop in 50 s. Find 1) acceleration, and 2) stopping distance.

*October 5, 2015*

**Social Studies 8 PLEASE HELP!**

You're welcome :)

*October 2, 2015*

**Social Studies 8 PLEASE HELP!**

N. It's D

*October 2, 2015*

**Math**

A block of cheese has a mass of kG it is cut into smaller pieces each weighING 2.5 KI log rams .how much will a shopkeeper collect if he sells each piece of cheese for $12.00

*October 1, 2015*

**Language arts**

What did you get on it?? I really need help!

*October 1, 2015*

**Chem**

The titration of 25.0 mL of an iron(II) solution required 18.0 mL of a 0.265 M solution of dichromate to reach the equivalence point. What is the molarity of the iron(II) solution?

*September 30, 2015*

**Math?**

33.2 °C - 25.1 °C = 8.1 °C Would my answer be 8.1 °C or 8.10°C ?? I have to consider sig figs but idk if 8.10 °C would be correct & if that should be my final answer??

*September 30, 2015*

**Chem (HELP!!) **

Test tomorrow too! I don't understand how to do these at all! HELP PLEASE _______________________________ 3.) 11.45 L of milk spilled on the floor. How many gallons spilled? 6.) Suppose 19.0 quarts of water is consumed by a thirsty dessert traveler. How many fluid ounces ...

*September 22, 2015*

**Chem**

Jake seems to be having similar questions...

*September 22, 2015*

**Chem**

These will give me ANSWERS ONLY.Can someone explaint to me how to do these????

*September 22, 2015*

**Chem**

Yes they are Chemistry Questions. I have Chemistry rn and these are the questions that we are doing.

*September 22, 2015*

**Chemistry**

1.) It took Beethoven (the composer, not the dog from that movie) 4.5 years to compose the Ninth Symphony (this may not be true, I made it up). How many decades did it take him? 3.) Michael bought a pumpkin that had a mass of 18,165 grams. What was the mass of the pumpkin in ...

*September 21, 2015*

**, science,**

T- the skeletal system consists of 206 bones H- Helps protects the body

*September 21, 2015*

**Math**

400,000

*September 17, 2015*

**reading**

What is the prefix,suffix,and root for neutral?The definition? My answer: Prefix-ne Suffix- no suffix Root- utral am i Definition-?? Not sure correct?

*September 15, 2015*

**language arts**

I am not sure about the prefix suffix and root of minute for the prefix i think it is min for suffix i think there is no suffix and root ute am i correct? Answer ASAP PLZ

*September 15, 2015*

**Trig**

The foot of a ladder is on level ground 1.5m from a wall. The ladder leans agents the wall. The angle formed by the ladder and the ground is 70 degrees. Calculate how high up the wall the ladder reaches.

*September 15, 2015*

**Global History**

If an unemployment is low in percentage, is that a good thing?

*September 14, 2015*

**Global History **

how do malaysia's natural resources, imports, and exports help make a strong economy?

*September 14, 2015*

**ENGLISH!! HELP!!!HELP PLEASE! **

HELP

*September 12, 2015*

**ENGLISH!! HELP!!!**

THE PROMPTS:TAKE A POSITION THAT DEFENDS OR CHALLENGES THE CLAIM THAT THE RECENT PROFUSION OF SURVEILLANCE TECHNOLOGIES CONSTITUTES A THREAT TO CIVIL LIBERTY. ___________________________________ The example Introduction is : George Orwell wrote "1984", a novel ...

*September 12, 2015*

**ENGLISH**

The PROMPT:TAKE A POSITION THAT DEFENDS OR CHALLENGES THE CLAIM THAT THE RECENT PROFUSION OF SURVEILLANCE TECHNOLOGIES CONSTITUTES A THREAT TO CIVIL LIBERTY.

*September 12, 2015*

**ENGLISH**

Formal essay topic sentence guidelines: 1.) Topic sen. must be debatable, or, at the very least, worthy of discussion. They should not present straight facts with which most people would readily agree, nor should they be general statements about life. 2.) Topic sen. should ...

*September 12, 2015*

**health**

so whats the answer then

*September 10, 2015*

**Quick physics check**

1. During a five minute period a caterpillar crawls in a straight line along the edge of a meter stick from the 18 cm mark to the 42 cm mark. The displacement of the caterpillar during this time is A. 18 cm B. 24 cm C. 42 cm D. 60cm Is it 24 cm? 2. During a five minute period ...

*September 9, 2015*

**Science**

i don't get it

*September 9, 2015*

**Physics**

A rifle shoots a bullet upward from an initial height of 5m. After 3s, its height is 20m. What is the bullet's velocity at this time?

*September 8, 2015*

**Spanish**

Which pronoun correctly completes this question? Quiero mi plato. ¿ ____ lo pasas?

*September 8, 2015*

**Algebra**

Christina has three more quarters than dimes. The total value of the dimes and quarters is $13. How many quarters does she have?

*August 18, 2015*

**Enthalpy Change Calculations **

Find the heat of reaction (ΔH) for each of the following chemical reactions and note whether each reaction is exothermic or endothermic. 1. H2O(l) -> H2O(g) This is what I have so far: H2(g) + ½ O2(g) -> H2O(l) ΔH = -286.0 kJ/mol H2(g) + ½ O2(g...

*August 5, 2015*

**Chemistry **

In this reaction solid NaOH is added to approximately 100 mL of 0.500 mol/L HCl. Trial 1: 2.02 g of solid NaOH is added to 102.0 mL of the HCl solution. The temperature goes from 22.00°C to 32.0°C. Calculate the heat evolved in each trial (Q). I'm confused on how ...

*August 4, 2015*

**Chemistry**

In a constant-pressure calorimeter, 65.0 mL of 0.330 M Ba(OH)2 was added to 65.0 mL of 0.660 M HCl. The reaction caused the temperature of the solution to rise from 24.28 °C to 28.78 °C. If the solution has the same density and specific heat as water, what is ΔH ...

*August 2, 2015*

**English Grammar - Clauses**

The following sentence contains _____. We like him as much as them. an adjective clause a noun clause an elliptical clause no subordinate clause I think "as much as them" is an adverb clause but since it's not an option, I'd choose "no subordinate clause...

*July 30, 2015*

**Math**

idk

*July 27, 2015*

**English Grammar - Function of an Infinitive**

Thank you for your help, Ms.Sue! I'd like to know if there's a specific rule for infinitives that follow adjectives.

*July 24, 2015*

**English Grammar - Function of an Infinitive**

Hello, In the following sentence identify the function of the infinitive (phrase). Is it too expensive to travel to Europe? My list of answers contains: Adverb, subject, direct object, adjective, object of preposition, and predicate noun. Apparently, both predicate noun and ...

*July 24, 2015*

**Physics**

Find the gravitational force acting on the Sun by the Earth. Given: Mass of the Sun = 1.99 * 1030 kg Mass of the Earth = 5.98 * 1024 kg Radius of the Sun = 6.96 * 108 m Radius of the Earth = 6.37 * 106 m Distance between the Sun and the Earth = 1.50 * 1011 m G = 6.67 * 10–...

*July 23, 2015*

**Geometry - Degrees, minutes, and seconds**

Thank you Ms.Sue!

*July 21, 2015*

**Geometry - Degrees, minutes, and seconds**

Hello, 24° 59' 60" is equivalent to 25° I would like to know how to reach 25° I've seen examples that added 1 to every number but that confused me even more. Thank you for your help!

*July 21, 2015*

**English grammar**

Wow, that sounds complicated. Thank you for your help!

*July 21, 2015*

**English grammar**

In the following sentence identify the function of the infinitive (phrase). Is it too expensive to travel to Europe? My list of answers contains: Adverb, subject, direct object, adjective, object of preposition, and predicate noun. I chose predicate noun. Also, if an adjective...

*July 21, 2015*

**Science Help Not sure**

B.The person moved with an average speed of - 4 km/h and an average velocity of - 4 km/h.

*July 4, 2015*

**psychology **

The only research method that can determine whether a cause-effect relationship exists between two factors is called a(n) __________.

*July 3, 2015*

**Physics**

Would a feather have more air resistance than a lump of lead?

*June 25, 2015*

**Chemistry**

a) iii. b) ii.

*June 24, 2015*

**Physics**

For centripetal acceleration, if the radius increases, does that mean the angle is decreasing?

*June 24, 2015*

**Algebra 2**

solve using substitution method: x=-5 y=2 z=0 x+3y-z=1 -4x-2y+5z=16 7x+10y+6z=-15

*June 10, 2015*

**physics**

A crate sits on wooden horizontal surface (a wooden floor). The figure shows a top view of this looking down onto the crate (gravity would be acting into the page). Man one and man two apply forces F1 and F2, at angles of θ1 and θ2 respectively, with the goal of ...

*June 3, 2015*

**Chemistry**

When 1 mole of ethylene (C2H4) is burned at constant pressure, 1410 kJ of energy is released as heat. Calculate dH for a process in which 10.0 g of ethylene is burned at constant pressure.

*May 26, 2015*

**Chemistry**

When 1 mole of ethylene (C2H4) is burned at constant pressure, 1410 kJ of energy is released as heat. Calculate (delta) H for a process in which 10.0 of ethylene is burned at constant pressure

*May 26, 2015*

**life orientation**

Eevaluation of current protests

*May 24, 2015*

**English**

How do I use an apostrophe to write this is James book? James'?

*May 13, 2015*

**Maths - Trigonometry**

The eaves of a roof sloping at 23° overhand the walls, the edge of the roof being 75 cm from the top of the wall. The top of the wall is 5.4 meters above the ground. What is the height above the ground of the edge of the roof, to the nearest centimeter?

*May 13, 2015*

**Math**

Two ladders are the same distance from the base of a wall. The longer ladder is 15m long and makes an angle of 58 with the ground. if the shorter ladder is 12.6m long, what angle does it make with the ground?

*May 13, 2015*

**Ton**

If 2 dice are tossed 1000 times, predict the approximate number of times each sum below would occur in 1000 tosses. 2: 3 4 and so on until 12 HOW DO U DO THIS?!

*May 12, 2015*

**English**

What should be underlined or quoted in this sentence? The Dance of the Sugarplum Fairy is a melody in The Nutcracker Suite. The nutcracker suite underlined? What about famous dances?

*May 12, 2015*

**chemistry **

calculate the solubility in grams of KCL3(s) per 100 ml of water

*May 10, 2015*

**chemistry**

Higher to noise ratios can be achieved in FTIR spectra compared to spectra from dispersive IR instruments. How is such a useful feat achieved in FTIR

*May 10, 2015*

**math**

60

*May 7, 2015*

**Science**

Are these answers correct? 1. Which layer of the sun's atmosphere are you looking at when you look at an image of the sun? Photosphere**** Chromosphere Corona Prominence 2. Which of the following materials could have been found in the giant cloud that formed the solar ...

*May 6, 2015*

**Chemistry**

Carbon monoxide and hydrogen react according to the equation: CO(g) + 3H2(g) CH4(g) + H2O When 1.00 mol CO and 3.00 mol H2 are placed in a 1L flask at 1200K and allowed to come to equilibrium, the reaction mixture is found to contain 0.387 mol H2O. What is the molar ...

*April 29, 2015*

**science**

thank youu

*April 29, 2015*

**science**

The aquarium was sealed and placed at a bright corner. After two weeks, both the number of water plants and water snails increased. (a) Besides their gaseous needs, state one other way in which the water snail and the water plant are interdependent.

*April 29, 2015*

**math**

11.558

*April 29, 2015*

**math**

Find the surface area of the cylinder to the nearest whole number. The figure is not drawn to scale. 13 in on top, 14 in around/

*April 29, 2015*

**chemistry**

Calculate the approximate pH of a 0.1 M solution of ethanoic acid at 298 K, given that the dissociation constant, Ka, is 1.75 x 10-5 mol/L at 298 K.Ethanoic acid dissociates in aqueous solution as follows: CH3COOH(aq) + H2O H3O+(aq) + CH3COO-(aq)

*April 28, 2015*

**math**

how do I find the max number of 1.7 inch diameter spheres that can be stored in a cylindrical tank the tank has a radius of 2 inches and height of 4 inches there are 2 inches of water in the tank

*April 26, 2015*

**Economics**

the profit will decrease after a certain price at a higher rate. this means more bikes will need to be produced?

*April 25, 2015*

**physics**

Through beta decay, 55Cr (Chromium‑55 –with mass 54.94080 u) emits an electron (0.00055 u) leaving a daughter nucleus of 55Mn (manganese‑55 with mass 54.93800 u). a) How many different particles to we get out of this reaction b) How much energy in MeV is ...

*April 17, 2015*

**Statistics**

how did you do them? do you have an equation or anything?

*April 12, 2015*

**Statistics **

I'm stuck on this homework question. If someone can just help get me started with the first one I'm sure I can do the rest. I'm just not sure how to begin. Thanks! 1. A production process produces 90% non-defective parts. A sample of 10 parts from the production ...

*April 12, 2015*

**Combinations-Math**

A group of 9 workers decides to send a delegation of 3 to their supervisor to dicusss their grievences. c.) If there are 4 women and 5 men in the group, how many delegations would include at least 1 women? iS THIS CORRECT: C(4,1)xC(5,1)+C(4,3)XC(5,0)=24

*April 10, 2015*

**math**

Is it Median??

*April 9, 2015*

**Math**

Thanks!!

*April 9, 2015*

**Math**

Is it B?

*April 9, 2015*

**Math**

Im still confused because I'm getting a decimal

*April 9, 2015*

**Math**

Im confused on how you are supposed to solve it Ms. Sue.

*April 9, 2015*

**Math**

Im confused on

*April 9, 2015*

**Math**

A company predicts that this years sales will be equivalent to 144% of last years sales. Which value represents 144%? A. 14.4 B. 1 11/25 C. 1.56 D. 14 4/5

*April 9, 2015*

**Chemistry (Acid/Base)**

Consider a solution made by mixing 100 mL of 2.0 M acetic acid (Ka= 1.8e-5) with 100 mL of 0.00020 M benzoic acid (Ka= 6.4e-5). How many moles of solid NaOH must be added to the solution so that half of the benzoic acid is protonated (i.e. such that [HA] = [A-] for benzoic acid)?

*April 9, 2015*