Tuesday

May 3, 2016
Total # Posts: 1,782

**Math**

Name things that are false about prime numbers
*April 30, 2016*

**Chemistry **

For the reaction 2 NO (g) + Cl2 (g) → 2 NOCl (g) If the concentration of NO is tripled, the rate of the reaction increases by a factor of nine. If the concentration of Cl2 is cut in half, the rate of the reaction is decreased to half the original rate. Find the order of ...
*April 17, 2016*

**algebra**

The size of the coyote population at a national park increases at the rate of 4.6% per year. If the size of the current population is 130, find how many coyotes there should be in 6 years. Use the function f(x)=130e^0.046t
*April 15, 2016*

**Math **

The Christmas Day parade in Manhattan, New York started on 145th St. The people walked north on this road for 4 miles. Then they turned on 34th street and walked for three more miles. 34th street has a bearing of N46°E. How far is the parade from their starting point on ...
*April 11, 2016*

**Math **

A jet took of at a rate of 310 ft per second and climbed in a straight path for 2.4 minutes. What was the angle of elevation of its path of its final altitude was 13,000 ft? Don't know what to convert 2.4 mins to. I got sin of the angle of elevation = 13,000/ ?
*April 11, 2016*

**Math **

An airplane flying at 390 mph has a bearing of N 28°W. After flying 3 hours, how far north and how far west has the plane traveled from its point of departure?
*April 11, 2016*

**Math **

A plane flies 430 miles at a bearing of S27°E, then turns and flies N63°E for 135 miles. Find the distance and the bearing from the starting?
*April 11, 2016*

**Math **

Jake is on the Appalachian Trial hiking. He hikes 8 miles due north and then turns and hikes an additional 10 miles at a bearing of N 67°W at which point he has reached a vista, eats lunch, and decides to bushwhack directly back to the trailhead. How far is he now from the...
*April 10, 2016*

**Math **

Jake is on the Appalachian Trial hiking. He hikes 8 miles due north and then turns and hikes an additional 10 miles at a bearing of N 67°W at which point he has reached a vista, eats lunch, and decides to bushwhack directly back to the trailhead. How far is he now from the...
*April 10, 2016*

**Math **

A plane flies 430 miles at a bearing of N27°E, then turns and flies N63°E for 135 miles. Find the distance and the bearing from the starting point to the ending point ? I found distance to be 450.69 mi by using A^2+B^2=C^2 because it is a right triangle. I am confused ...
*April 10, 2016*

**Chemistry**

Potassium oxide reacts with water to produce of potassium hydroxide. Please provide a balanced equation, and determine how much potassium oxide is needed to produce 80.5g of potassium hydroxide?
*April 5, 2016*

**Math**

A bucket holds 0.25 gallons of water. The water is poured into 20 equal-sized containers and there are 12 ounces left. How much does each of the smaller containers hold? (There are 128 ounces in a gallon.)
*April 2, 2016*

**math**

Determine the range of 𝑦 = −5cos(𝑥 + 𝜋 6)−3
*March 27, 2016*

**math**

Solve for x: 𝑦 = 2sin−1(𝑥 −5)
*March 27, 2016*

**math**

Write an equation for a cosecant function with a period of 3𝜋 and a range of (−‡,−2]¾[2,‡)
*March 27, 2016*

**Math**

You can put the numbers 1 to 10 on flashcards and show her like for the number 6 put 6 things she likes then do the rest of the numbers. And maybe she knows them give her a litte surprise like a reward her favorite thinGS, candy, toys, and etc
*March 16, 2016*

**math**

Two circles of radii 9cm and 13cm have their centres 15cm apart. Find the angle between the radii joining the centres to the points of intersection of the circles. Hence find the overlapping area between the two circles. - (Been struggling with this question, any help would be...
*March 10, 2016*

**Statistics**

Suppose a baseball pitcher throws fastballs 80 % of the time and curveballs 20 % of the time. Suppose a batter hits a home run on 8 % of all fastball pitches, and on 5 % of all curveball pitches. What is the probability that this batter will hit a home run on this pitcher'...
*March 6, 2016*

**english**

Which sentence contains the correct form of the possessive pronoun?
*March 2, 2016*

**problem solving**

Casandra had a pair of mice ,the female gave birth to 8 pups ,four males and four females. in the next term ,5 females each gave birth to 8 pups ,again 4 males 4 females.in the next term,each female does the same and no mice die .how many mice,male and female will Casandra now...
*February 28, 2016*

**maths **

four darts are thrown at a dart board .if all four darts hit the board,how many different point total are possible bullseye 9 second circle 7 third circle 4 outer circle 1
*February 28, 2016*

**math**

show that the constant p cannot lie between 1 and 2 if the equation px^2-p+10=2(p+2)x has real roots
*February 27, 2016*

**Chemistry**

Find the mass of urea (CH4N2O) needed to prepare 50.9 g of a solution in water in which the mole fraction of urea is 7.69×10−2.
*February 24, 2016*

**math**

In a three digit number, the hundreds digit is twice the units digit. If the digits are reversed, the new number is 396 less than the original number. Find the number.
*February 9, 2016*

**Social Studies**

Yay! Thanks I got them right
*February 9, 2016*

**Social Studies**

Ohh would it be D. Fresh water sources?
*February 9, 2016*

**Social Studies**

1. You are a migrant worker from India who has come to Kuwait. In which industry are you most likely to seek work? A. Fishing B. Oil** C. Farming D. Livestock B? 2. Which of the following has the greatest impact on human settlement in Iraq? A. Oil resources** B. Mountain ...
*February 9, 2016*

**History**

Which was a cause of the English Civil War? disagreements between Protestants and Jews rebellion in the English colonies a split between England and Scotland a dispute between the king and Parliament My answer: a dispute between the king and Parliament
*February 3, 2016*

**History**

Oh so it would be belief in predestination??
*February 3, 2016*

**History**

What about this one? Which was not a consequence of the Protestant Reformation? decline in literacy wars of religion belief in predestination the rise of nation-states My answer: wars of religion
*February 3, 2016*

**History**

Which was not a cause of the Protestant Reformation? worldiness and greed among Catholic officials sale of indulgences Council of Trent the Renaissance spirit of questioning authority My answer: Council of Trent
*February 3, 2016*

**Physics**

A cannonball is fired with initial speed v0 at an angle 30° above the horizontal from a height of 42.9 m above the ground. The projectile strikes the ground with a speed of 1.2v0. Find v0.
*January 31, 2016*

**Geometry**

What is the distance between point P(-2, 1, 3) and point Q(-1, 4, -2) to the nearest tenth? 35.1 units 9.3 units 18.4 units 5.9 units My answer: 18.4 units
*January 29, 2016*

**Science**

I am too
*January 29, 2016*

**Geometry(Check My Answers)**

What is the measure of a base angle of an isosceles triangle if its vertex angle measures 30? 30 150 15 75 <My choice Which lengths could be the side lengths of a triangle? 18cm, 6cm, 13cm <My choice 13cm, 22cm, 7cm 6cm, 18cm, 12cm 22cm, 13cm, 8cm
*January 15, 2016*

**Geometry**

What is the slope of the line that passes through (2,1) and (7,-2)? 5/3 -1/3 -3/5 1/5 My answer: -3/5
*January 15, 2016*

**Geometry**

The slope of lien b is 1/3. What is the slope of a line perpendicular to line b? -1/3 -3 1/3 3 My answer: -1/3 Note: there is no graph for this
*January 15, 2016*

**Geometry**

A line has a slope of 2 and passes through the point (4,0). What are the coordinates of another point that is on the line? (0,2) (2,0) (6,4) (4,6) My answer: (0,2)
*January 14, 2016*

**Geometry**

Yes I do, thank you
*January 14, 2016*

**Geometry**

A line segment has the endpoints (2,-5) and (-1,-1). What is the slope? -1/6 -6/1 -3/4 -4/3 My answer: -3/4
*January 14, 2016*

**math**

given that 4x^2-6x+9=A(x-1)(2x+1)+B(x-1)+C for all values of x, find the values of A, B and C
*January 14, 2016*

**Geometry**

108?
*January 13, 2016*

**Geometry**

What is the measure of an exterior angle of a regular pentagon? 72 36 120 108 My answer: 120
*January 13, 2016*

**Geometry**

Which angles describe <1 and <8? vertical angles alternate exterior angles alternate interior angles corresponding angles My answer: vertical angles
*January 13, 2016*

**Chemistry**

What does potassium nitrate form when it decomposes
*January 12, 2016*

**statistics**

On the second day of Statistics, my teacher gave to me….two turtle doves. The pet store that my Statistics teacher frequents has 25 doves, of which 8 are turtle doves. (See * below. This is not a trick question as turtle doves really do exist. If you are visualizing a ...
*December 21, 2015*

**Math Help ASAP PLZ!!!!!**

Thank u so much Steve!!! This helps a lot! And also thank you for respecting my request to keep it simple. Not a lot of people these days do that. 5 stars! 😉 Thanks again!
*December 17, 2015*

**Math Help ASAP PLZ!!!!!**

I already got the following problem wrong, so I just need help understanding HOW to get the correct answer. "In order to get a certain shade of blue paint, a mixer must have 5 parts white paint to 3 parts blue. If 4 gallons of paint must be mixed, how many gallons of ...
*December 17, 2015*

**Geometry**

The contrapositive of the following conditional statement: If a figure has four sides, then it is not a triangle. A.If a figure does not have four sides, then it is a triangle. B.If a figure is a triangle, then it does not have four sides. C.If a figure is not a triangle, then...
*December 15, 2015*

**Physics**

A fire hose ejects a stream of water at an angle of 35.8 ° above the horizontal. The water leaves the nozzle with a speed of 21.9 m/s. Assuming that the water behaves like a projectile, how far from a building should the fire hose be located to hit the highest possible fire?
*December 13, 2015*

**Chemistry **

At its normal boiling point of 126°C n-octane, C8H18, has a vapor pressure of 760 torr. What is its vapor pressure at 25°C? the enthalpy of vaporization of n-octane is 39.07 kj/mol.
*December 11, 2015*

**Chemistry **

Rank the following in order of increasing vapor pressure at 298 k: CH3CH2OH, CH3OCH3, CH3CH2CH3.
*December 11, 2015*

**Math**

60-20 > 8x
*December 9, 2015*

**Physics **

A zebra sees a lion 300 m to his right. The zebra starts running at 25 KpH straight ahead to get away. At this point the lion launches himself on an intercept course at the zebra at a speed of 31 KpH. a. At what angle does the lion launch himself? b. If both animals continue ...
*December 8, 2015*

**Music**

Which units measure the amplitude of sound waves? seconds decibals watts hertz My choice: decibals
*November 30, 2015*

**math**

a six sided cubed is rolled. find the probability of p(6)
*November 28, 2015*

**M**

FIRST QUESTION: A SOCK DRAWER HAS 2 BLUE PAIR,4 WHITE PAIR, 4 BLACK PAIR. WHAT IS THE PROBABILITY YOU WILL PICK OUT A WHITE PAIR OR A BLUE PAIR. YOU REPLACE EACH PAIR AFTER YOU PICK. SECOND QUESTION: WHAT IS THE PROBABILITY YOU CAAN PICK OUT 1 BLUE, 1 WHITE, OR 1 BLACK. YOU ...
*November 28, 2015*

**Organic Chemistry**

What is the optical purity of a partially racemized product is the calculated specific rotation is -8◦ and the pure enantiomer has a specific rotation of -10◦? Calculate the percentage of each of the enantiomers in the partially racemized product. I'm very lost...
*November 27, 2015*

**Moorpark**

Determine the concentration of NO3- in each of the following aqueous solutions. (Assume complete dissociation of each compound.) 0.30 M KNO3, 0.30 M Ca(NO3)2, 0.30 M Cr(NO3)3
*November 22, 2015*

**Algebra 2**

The income from the school car wash is one, five, and ten dollar bills came to a total of $355. If there are 120 bills all together, and twice as many one dollar bills as five and ten dollar bills combined, how many bills of each denomination are there? How do I get three ...
*November 17, 2015*

**Moorpark **

Ice has negative caloric content. How much energy, in each of the following units, does your body lose from melting 175g of ice? Express your answer in J, kJ, cal, Cal
*November 16, 2015*

**Chemistry**

Ice has negative caloric count. How much energy, in each of the following units, does your body lose from melting 175g of ice? Express your answers in J, kJ, cal, Cal
*November 16, 2015*

**Language Arts**

"Type a paragraph in which you use at least two linking commas, two semicolons, and one colon." Does the paragraph below match the criteria above? My dog, Bruno, is absolutely amazing; he's so many things for a one year old Miniature Pinscher: funny, smart, ...
*November 16, 2015*

**algebra**

a swimming pool is 60 ft long and 35 ft wide. a model of the pool is 9 in long. how wide is the model
*November 16, 2015*

**Math 6th grade**

I do not understand verbal representation. Graphic re presentation? Numerical representation?
*November 15, 2015*

**language arts**

thank you ill try a :)
*November 13, 2015*

**language arts**

SO IT IS A?
*November 13, 2015*

**language arts**

The plaza was a delightful place to sit in the sunshine. A. town square B. living room C. playground D. park is it a?
*November 13, 2015*

**Geometry**

Which statement is a good definition? You are a teenager if and only if you are 15 years old. You are not a teenager if and only if you are less than 13 years old. You are 13 to 19 years old if and only if you are a teenager. You are 15 years old if and only if you you are not...
*November 12, 2015*

**Geometry**

Which statement is no true about adjacent angles? They have no interior points in common. They share a common side. They are coplanar. They have the same measure. My answer: D
*November 12, 2015*

**Geometry**

What is point P in triangle ABC called? A.incenter B.median C.circumcenter D.centroid My answer: D
*November 6, 2015*

**math**

what is the answer for bard is making necklaces and he did 1 white and than 3 blue and than 1 white
*November 4, 2015*

**Math**

Wait, the answer isn't that. It's $125.60.
*November 2, 2015*

**Math**

The answer is $452.16 but I'm unsure on how to get there.
*November 2, 2015*

**Math**

Sarah bought a circular marble table top to use as her dining room table. The marble is 4 ft in diameter. Find the cost of the table top at $90 per square yard of marble.
*November 2, 2015*

**Maths**

Formula for Perimeter of a Rectangle- 2l+2w 2(2.45)+ 2(1.62)=8.14 or 2.45+2.45+1.62+1.62=8.14
*November 2, 2015*

**health economy**

Suppose that you are to specify a short-run production function for counseling services.Which inputs might you include in the production function?Which would be varaiable inputs and which would be fixed inputs?
*October 28, 2015*

**Health**

If you’ve decided to lose weight then ________.
*October 26, 2015*

**Chemistry**

What mass of liquid water at room temperature (25◦C) can be raised to its boiling point with the addition of 43.0 kJ of energy? Answer in units of g.
*October 24, 2015*

**Chemistry**

3490 J of heat are added to a 20.4 g sample of iron at 20◦C. What is the final temperature of the iron? The specific heat of iron is 0.449 J/g · K. Answer in units of K.
*October 24, 2015*

**Chemistry**

Energy in the amount of 479 J is added to a 89.0 g sample of water at a temperature of 8.00◦C. What will be the final temperature of the water? Answer in units of ◦C.
*October 24, 2015*

**Chemistry**

if a photon of light has an energy of 2.35x10^-19 J, calculate the frequency and wave length. What solution do I use to get the answer?
*October 21, 2015*

**social studies**

economic problems after civil war. How are the people doing all of the work going to be paid and by whom?
*October 18, 2015*

**social studies**

who would be allowed to be in the military during the reconstruction era i understand that whites were already in the military and blacks just got the opportunity to vote but I'm not sure if they could pin the military.
*October 16, 2015*

**social studu**

They are farmers
*October 16, 2015*

**social studu**

what is the South going to do for economy now that slavery is abolished?
*October 16, 2015*

**biology**

In an investigation to find the number of african potato plants in a field of area 6 000m^2 three plots were selected.each with an area of 10^2.Pot 1 contained three and the other plots contained seven and two african potato plans,respectively. 1.name two advantages of ...
*October 16, 2015*

**Moorpark**

A solution contains an unknown mass of dissolved barium ion. When sodium sulfate is added to the solution, a white precipitate forms. The precipitate is filtered and dried and then found to have a mass of 210 mg. What mass of barium was in the original solution? (Assume that ...
*October 14, 2015*

**Math**

a gift store owner used 9 rolls of wrapping paper to wrap his customers' gifts last week. each roll was 58 1/3 inches long. how many gifts did he wrap if a 8 1/3 inch long piece of wrapping paper was used to wrap each gift?
*October 12, 2015*

**Algebra**

i got 0.09090909
*October 7, 2015*

**Algebra**

So finding the decimal equivalents you multiply 1 divided by 9
*October 7, 2015*

**Algebra**

What is it?
*October 7, 2015*

**Algebra**

Which rational number equals 0 point 1 with bar over 1? 1 over 11 1 over 10 1 over 9 1 over 8
*October 7, 2015*

**Middle School Math**

The marching band is selling cases of fruit for $13 per case. a. Write an algebraic expression for the cost of f cases of fruit. b. Evaluate the expression for 250 cases. Question 17 options:
*October 7, 2015*

**Chemistry**

I cannot understand how the mass of the system has changed. There's no need for you to do my work please just explain it to me! :) thanks so much A scientist placed copper powder into a crucible and heated it until all of the copper reacted. The resulting product was ...
*September 29, 2015*

**Chemistry**

Calculate the number of moles of carbon atoms present in 1.1 g of ethanol (C2H6O). Answer in units of mol.
*September 16, 2015*

**Chemisrty**

What is the weight of 6.14×10^21atoms of phosphorus?Answer in units of g.
*September 16, 2015*

**Chemistry**

How many atoms of mercury are present in 3.2 cubic centimeters of liquid mercury? The density of mercury is 13.55 g/cc. Answer in units of atoms.
*September 16, 2015*

**Chemistry**

An analysis of nicotine (MW = 162 g/mol) gives 74.0% carbon, 8.65% hydrogen, and 17.3% nitrogen. What is the TRUE (MOLECULAR) formula for nicotine? All I need are the formulas!!
*September 16, 2015*

**science**

What is an example of physical science? I know it is movement but can you give an example in a sentance and explain please?
*September 15, 2015*