Saturday

February 25, 2017
Total # Posts: 399

**Math**

Joe weighs 30 lbs less than twice ken's weight. If ken gains 10 pounds then together they would weigh 250 pounds. How much does each of them weigh? let x be ken's weight. thanks

*June 1, 2013*

**Chemistry**

Describe the subatomic structure of the nucleus, including the structure of each nucleon. Draw a picture. Describe the forces that hold the nucleus together and draw them on your diagram. Explain how beta emission works.

*May 24, 2013*

**math**

Explain how to factor 5x^2 - 125.

*May 15, 2013*

**French**

How do you unscramble o'ceisoubellreld.

*April 23, 2013*

**math**

i need a little bit of help with some math homework very very bad!

*April 8, 2013*

**math sale taxes**

Eva is making copies of her choir's performance schedule. The total bill for the copies Eva made came to $48.00 plus 8% tax. How much tax did she pay?

*April 3, 2013*

**7th Grade Social Studies**

Omg!!! Guys quit cursing on this site...people need help we r not all that smart!!! I got a 100% thanks!

*March 30, 2013*

**Math**

Quentin has 18 unit cubes. How many different rectangular prisms can he build if he uses all of the cubes.

*March 19, 2013*

**Social Studies**

Just took the quiz,I got a 100%.The answers are.. 1)B 2)B 3)D

*March 11, 2013*

**math**

How do I find the decimal equivalent of the fraction 9/4?

*February 28, 2013*

**math**

Write an explicit formula for the sequence one-half, three-sevenths, one-third, five-nineteenths, three-fourteenths, ... Then find a14. (1 point) an = an – 1 – n minus one over seven n; fifteeen over one hundred nintey nine an = a sub n plus one over n squared plus ...

*February 26, 2013*

**math**

Generate the first five terms in the sequence using the explicit formula. cn= 12n – 11 (1 point)

*February 26, 2013*

**Chemistry**

27.32

*February 13, 2013*

**physics**

A boy sledding down a hill accelerates at 1.20 m/s2. If he started from rest, in what distance would he reach a speed of 6.10 m/s?

*January 29, 2013*

**calculus**

Find the values of x for which each function is continuous. 1.) f(x)= 2x+1/x^2+x-2 2.) f(x)= x if x is less than or =1 = 2x-1 if x>1

*January 27, 2013*

**calculus**

Determine the values of x, if any, at which each function is discontinuous. At each number where f is discontinuous, state the condition(s) for continuity that are violated. f(x) = x+5 if x<0 = 2 if x=0 = -x^2+5 if x>0

*January 27, 2013*

**Calculus**

How did you find that it was continuous?

*January 27, 2013*

**Calculus**

Determine the values of x, if any, at which each function is discontinuous. At each number where f is discontinuous, state the condition(s) for continuity that are violated. f(x)= x+5 if x is less than or =0 -x^2+5 if x>0

*January 27, 2013*

**math calculus**

. Folding a Pyramid - A pyramid with a square base and four faces, each in the shape of an isosceles triangle, is made by cutting away four triangles from a square piece of cardboard and bending up the resulting triangles to form the walls of the pyramid. What is the largest ...

*December 3, 2012*

**math calculus**

. Folding a Pyramid - A pyramid with a square base and four faces, each in the shape of an isosceles triangle, is made by cutting away four triangles from a square piece of cardboard and bending up the resulting triangles to form the walls of the pyramid. What is the largest ...

*December 3, 2012*

**math calculus**

. Folding a Pyramid - A pyramid with a square base and four faces, each in the shape of an isosceles triangle, is made by cutting away four triangles from a square piece of cardboard and bending up the resulting triangles to form the walls of the pyramid. What is the largest ...

*December 3, 2012*

**math calculus**

. Folding a Pyramid - A pyramid with a square base and four faces, each in the shape of an isosceles triangle, is made by cutting away four triangles from a square piece of cardboard and bending up the resulting triangles to form the walls of the pyramid. What is the largest ...

*December 3, 2012*

**math calculus**

. Folding a Pyramid - A pyramid with a square base and four faces, each in the shape of an isosceles triangle, is made by cutting away four triangles from a square piece of cardboard and bending up the resulting triangles to form the walls of the pyramid. What is the largest ...

*December 3, 2012*

**math calculus**

. Folding a Pyramid - A pyramid with a square base and four faces, each in the shape of an isosceles triangle, is made by cutting away four triangles from a square piece of cardboard and bending up the resulting triangles to form the walls of the pyramid. What is the largest ...

*December 3, 2012*

**math calculus**

. Folding a Pyramid - A pyramid with a square base and four faces, each in the shape of an isosceles triangle, is made by cutting away four triangles from a square piece of cardboard and bending up the resulting triangles to form the walls of the pyramid. What is the largest ...

*December 3, 2012*

**math calculus**

. Folding a Pyramid - A pyramid with a square base and four faces, each in the shape of an isosceles triangle, is made by cutting away four triangles from a square piece of cardboard and bending up the resulting triangles to form the walls of the pyramid. What is the largest ...

*December 3, 2012*

**math calculus**

. Folding a Pyramid - A pyramid with a square base and four faces, each in the shape of an isosceles triangle, is made by cutting away four triangles from a square piece of cardboard and bending up the resulting triangles to form the walls of the pyramid. What is the largest ...

*December 3, 2012*

**math calculus**

. Folding a Pyramid - A pyramid with a square base and four faces, each in the shape of an isosceles triangle, is made by cutting away four triangles from a square piece of cardboard and bending up the resulting triangles to form the walls of the pyramid. What is the largest ...

*December 3, 2012*

**math calculus**

. Folding a Pyramid - A pyramid with a square base and four faces, each in the shape of an isosceles triangle, is made by cutting away four triangles from a square piece of cardboard and bending up the resulting triangles to form the walls of the pyramid. What is the largest ...

*December 3, 2012*

**math calculus**

. Folding a Pyramid - A pyramid with a square base and four faces, each in the shape of an isosceles triangle, is made by cutting away four triangles from a square piece of cardboard and bending up the resulting triangles to form the walls of the pyramid. What is the largest ...

*December 3, 2012*

**math calculus**

. Folding a Pyramid - A pyramid with a square base and four faces, each in the shape of an isosceles triangle, is made by cutting away four triangles from a square piece of cardboard and bending up the resulting triangles to form the walls of the pyramid. What is the largest ...

*December 3, 2012*

**math calculus**

. Folding a Pyramid - A pyramid with a square base and four faces, each in the shape of an isosceles triangle, is made by cutting away four triangles from a square piece of cardboard and bending up the resulting triangles to form the walls of the pyramid. What is the largest ...

*December 3, 2012*

**math calculus**

. Folding a Pyramid - A pyramid with a square base and four faces, each in the shape of an isosceles triangle, is made by cutting away four triangles from a square piece of cardboard and bending up the resulting triangles to form the walls of the pyramid. What is the largest ...

*December 3, 2012*

**math calculus**

. Folding a Pyramid - A pyramid with a square base and four faces, each in the shape of an isosceles triangle, is made by cutting away four triangles from a square piece of cardboard and bending up the resulting triangles to form the walls of the pyramid. What is the largest ...

*December 3, 2012*

**math calculus**

. Folding a Pyramid - A pyramid with a square base and four faces, each in the shape of an isosceles triangle, is made by cutting away four triangles from a square piece of cardboard and bending up the resulting triangles to form the walls of the pyramid. What is the largest ...

*December 3, 2012*

**Chemistry**

If an object weighs 1.32 g/mL will it float or sink in water?

*November 7, 2012*

**Chemistry**

Dr. Bob, When I use the values that I have for latent heat of fusion and vaporization, I do not get the right answer. I have that latent heat of vaporization is 597.3 - 0.564T, and latent heat of fusion is 79.7 cal/gH2O.

*November 3, 2012*

**Chemistry**

A 500 mL bottle at room temperature (25˚C) of water is poured over 120 g of ice that is (-8˚C). What will be the final temperature of the water be when all the ice has melted? You can ignore loss of heat to the room.

*November 3, 2012*

**physics**

You are explaining to a friend why the crew of the International Space Station feels weightless while orbiting the Earth. Your friend responds that he thought gravity was just a lot weaker up there. Show that it isn’t so by calculating the acceleration due to gravity 350 ...

*October 23, 2012*

**math**

Write the equation of the quadratic function with roots -2 and 4 and a vertex at (1, 9).

*October 23, 2012*

**input/output tables**

I have a blank table to fill in.It says divide m by 3 m÷3

*October 22, 2012*

**trig**

A woman that is 5'4" stands 15 ft from a streetlight and casts a four-foot long shadow. Determine the height of the streetlight and the degree measure of the angle of elevation form the tip of her shadow to the top of the streetlight, both accurate to two decimal places.

*September 23, 2012*

**Chemistry**

Hydrated copper sulfate is heated. Using the speculative chemical equation CuSO4*5H2O-->CuSo4+5H2O, show how you could have predicted, by calculations, what the final weights in the crucibles might be. Show calculations for two starting weights between 1 and 4 grams.

*September 6, 2012*

**AP Physics**

thank you! the answer was 96.3

*August 30, 2012*

**AP Physics**

Consider the vectors A = 2.00 i + 7.00 j and B = 3.00 i - 2.00 j. (a) Sketch the vector sum C = A + B and the vector subtraction D = A - B. (b) Find analytical solutions for C and D first in terms of unit vectors and then in terms of polar coordinates, with angles measured ...

*August 30, 2012*

**Physics**

A block of iron at 39.0°C has mass 2.30 kg. If 3.50×104 J of heat are transferred to the block, what is its resulting temperature?

*June 20, 2012*

**Geometry**

Triangle RSU has two of its points(R and S) on the sides of a circle. Line SU forms a secant ray that passes through the diameter of the circle. Angle S is 30 degrees, the measure of arc RS is 84 degrees, and RU is tangent to the circle at R. Find the measure of angle U. 27&...

*May 22, 2012*

**physics**

The three charges shown in Figure P16.17 are at the vertices of an isosceles triangle. If q = 16.0 10-9 C, calculate the electric potential at the midpoint of the base. V Figure P16.17

*May 15, 2012*

**Math**

The present value of the money in your savings account is $420, and you're receiving 3% annual interest compounded monthly. What is the future value in two months?

*May 4, 2012*

**calculus**

A drone aeroplane is flying horizontally to a constant height of 4000 ft above a fixed radar tracking station. At a certain instant the angle of elevation theta is 30 degrees and decreasing, and the speed of the aeroplane is 300 mi/h a) How fast is theta decreasing at this ...

*April 24, 2012*

**chemistry**

What is the molarity of a solution if 255g NaNO3 is dissolved in 1500 mL of solution

*April 3, 2012*

**Math 11**

701.53cm

*March 29, 2012*

**math**

long is creating 01 foot-long comic strip. if she marked 0.5 ft on her paper, what should she do to find 1 foot. Hi

*March 27, 2012*

**criminal justice**

I bet you go to Liberty

*March 25, 2012*

**physics**

A 350g glass beaker contains 500g of water at a temperature of 10.0°C. If 400g of ethyl alcohol at 35°C is subsequently poured into the beaker and the water and alcohol mixture is thoroughly stirred, what is its equilibrium temperature?

*March 22, 2012*

**math**

h worked the following problem incorrectly. Part 1) In which line was the mistake made? Part 2) Show your work and give the correct answer? Line 1 40 ÷ 5(3 − 1) − 4 Line 2 40 ÷ 5(2) − 4 Line 3 40 ÷ 10 − 4 Line 4 4 − 4 Line 5 0

*March 21, 2012*

**Chemistry(Urgent, please respond, thanks!!)**

0.500

*March 14, 2012*

**Government--Please Check**

I'm not guessing, and why did you put Abigail/paige??

*March 13, 2012*

**Government--Please Check**

In the case McCulloch v. Maryland, the Supreme Court held that _____. My answer1.)the Necessary and Proper Clause gave the federal government broad rights not mentioned in the Constitution 2.)federal government could not create a national bank 3.)the Bill of Rights implies a ...

*March 13, 2012*

**Government**

so would it be # 4?

*March 13, 2012*

**Government**

Confederation: 1.)A government in which all power stems from a single central authority 2.)A government that secedes from another government My answer3.)A government in which power is shared between a sovereign central authority and various local governments 4.)A loose ...

*March 13, 2012*

**Government**

Thanks

*March 12, 2012*

**Government**

Which is not a subunit of the Department of Health and Human Services? 1.)The Food and Drug Administration My answer2.)The Bureau of Indian Affairs 3.)The National Institutes of Health 4.)The Centers for Disease Control

*March 12, 2012*

**Government**

Thank you!

*March 12, 2012*

**Government**

Chief of staff

*March 12, 2012*

**Government**

The most powerful position in the White House Office is usually the _____. 1.)chief of staff 2.)press secretary 3.)White House counsel My answer4.)attorney general

*March 12, 2012*

**Math**

A 10 year old has a heart rate of 210 and a 15 year old has a heart rate of 205 and so on. Right an equation that can be used to find the maximum heart rate for any age. It says the relationship is linear if that helps.

*March 10, 2012*

**algebra**

There is a 100 point test with 38 questions. The test has 2 point questions, and 5 point questions. How many 5 point questions and 2 point questions are there?

*March 10, 2012*

**math**

Thank you so much for your help!!

*March 7, 2012*

**math**

Jan ate 1/8 of a pizza. Then she ate 1/3 of the pizza. Later she ate 1/4 of it. How much did she eat in all? Thank you!

*March 7, 2012*

**POETRY**

Who is the intended audience for the poem Flesh and Spirit by Anne Bradstreet? I also need an example of contemporary relevance for the poem. Help please?

*February 12, 2012*

**math**

Find a fraction equivalent to 1\2. The denominator must be 5 less than 3 times its numerator. The numerator is less than 8. Is the answer 2\4

*February 8, 2012*

**chemistry**

C8H18(g) + 25/2(O2)(g) -> 8CO2(g) + 9H2O(g) STANDARD ENTHALPY VALUES (H): 02(g) = 0 kj/mol CO2 (g) = -393.5 kj/mol H20(g) = -241.8 kj/mol H total = -5094 kJ H of C8H18(g) is your unknown, so call that x. use: H of reaction = H of products - H of reactants so, -5094 kJ = [8(...

*January 29, 2012*

**Physics**

How do you find the acceleration of an object on a velocity-time graph if the acceleration of the object is at t = 2 s in m/s2?

*January 29, 2012*

**Physics**

How do you find the acceleration of an object on a velocity-time graph if the acceleration of the object is at t = 5 s in m/s2?

*January 29, 2012*

**Physics**

How do you find the acceleration of an object on a velocity-time graph if the acceleration of the object is at t = 5 s in m/s2?

*January 29, 2012*

**Physics**

What is the impact speed when a car moving at 114.0 km/h bumps into the rear of another car traveling in the same direction at 104.5 km/h?

*January 26, 2012*

**Physics**

Sally travels by car from one city to another. She drives for 40.2 min at 80.0 km/h, 12.0 min at 105 km/h, and 45.0 min at 40.0 km/h. She spends 13.7 min eating lunch and buying gas. (a) Determine the total distance traveled in km. (b) Determine the average speed for the trip ...

*January 26, 2012*

**english**

I read what you sent and I appreicate it but i have to write these sentences by tomorrow and i don't understand

*January 23, 2012*

**english**

ok i will do it my self what is a infinipive an independent clause and a prepositional phrase

*January 23, 2012*

**English**

write a sentence about what the future holds using 1 abstract noun 1 subordinate clause. and then another sentence same topic using 1concrete noun 1 adjectives 1 prepositional phrase 1 personal pronoun and 1 interjection.

*January 23, 2012*

**English**

Write a sentence about what the future holds using 1 subject pronoun 2 adjectives 1 proper noun

*January 23, 2012*

**English**

write aa sentence about what the future holds using 1 possessive pronoun 2 adverbs and 1 compound predicate

*January 23, 2012*

**English**

if i understood what all the nouns and adjectives and all the other stuff i would write it my self i promise

*January 23, 2012*

**English**

I need a sentence about what my future holds using 1 infinipive 2 independent clause and a prepositional phrase please help

*January 23, 2012*

**physics**

find the altitude change of a 10000-kg fighter which clims and in so doing, loses 100 m/s of airspeed

*December 21, 2011*

**math**

What type of graph is best suited for displaying the range and frequency distribution of the number of hours the students in a class spend on homework while still showing each individual amount of time spent on homework?

*December 13, 2011*

**physics**

A hydrogen atom is in the 4p state. Determine its energy.

*December 8, 2011*

**Chemistry**

The half life for a first order reaction is know to be 4.5 h. How long will it take for 85% to be decomposed, in h?

*December 7, 2011*

**Physics**

I am confused on this question.

*December 6, 2011*

**Physics**

What is the age in years of a bone in which the ratio 14C/ 12C is measured to be 2.3×10^−13?

*December 6, 2011*

**Physics**

What is the age in years of a bone in which the ratio 14C/ 12C is measured to be 2.3×10^−13?

*December 6, 2011*

**phyics**

Calculate (in MeV ) the binding energy per nucleon for 40 Ca .

*December 5, 2011*

**physics**

Part C Calculate (in MeV ) the total binding energy for 40 Ca .

*December 5, 2011*

**Physics**

Calculate (in MeV ) the total binding energy for 40 Ca.

*December 4, 2011*

**Physics**

Calculate (in MeV ) the total binding energy for 40 Ca.

*December 4, 2011*

**Math**

The following table represents the diameter of the cross section of a wire at continuous heights (feet) above the ground. Assume that each cross section is circular. Height(ft) 2 6 10 14 18 22 26 30 Diameter 2 2 2.0 1.8 1.6 1.5 1.3 1.2 (feet) (those should all line up) a) ...

*December 4, 2011*

**Math**

The following table represents the diameter of the cross section of a wire at continuous heights (feet) above the ground. Assume that each cross section is circular. Height(ft) 2 6 10 14 18 22 26 30 Diameter 2 2 2.0 1.8 1.6 1.5 1.3 1.2 (feet) (those should all line up) a) ...

*December 4, 2011*

**Physics**

A researcher observes hydrogen emitting photons of energy 10.2 eV. What are the quantum numbers of the two states involved in the transition that emits these photons?

*December 4, 2011*

**Physics**

The speed of an electron is known to be between 3.0×10^6 m/s and 3.3×10^6 m/s . Estimate the uncertainty in its position. Change in X = ? M

*November 29, 2011*