Tuesday

September 16, 2014

September 16, 2014

Total # Posts: 70,558

**physics**

An 66.0 N box of clothes is pulled 5.5 m up a 30.0° ramp by a force of 116 N that points along the ramp. If the coefficient of kinetic friction between the box and the ramp is 0.22, calculate the change in the box's kinetic energy.
*May 29, 2014*

**physics**

A 56.0 kg diver steps off a diving board and drops straight down into the water. The water provides an upward average net force 1310 N. If the diver comes to rest 4.1 m below the water's surface, what is the total distance between the diving board and the diver's ...
*May 29, 2014*

**Algebra **

1. 6e^-x=3 2. 32(1.5)^x=640 3.5000/(1.05)^x=250 4.50(3-e^2x)=125
*May 29, 2014*

**algebra**

Julia can finish 20 mile bike ride in 1.2 hrs. Katie can finish the same bike ride in 1.6 hrs. How much faster. Does Julia ride then katie
*May 29, 2014*

**geometry**

The endpoints of are A(2, 2) and B(3, 8). is dilated by a scale factor of 3.5 with the origin as the center of dilation to give image . What are the slope (m) and length of ?
*May 29, 2014*

**Microeconomics**

x 130
*May 29, 2014*

**Precalculus**

* I know how to graph this but I don't know how to punch the equation in correctly. I am not sure about the window either.. How can I type this equation in the graphing calculator? y=pi(25-x)^2 • 2x Note, the 2x is NOT multiplied by 2.. Show how I can type this in...
*May 29, 2014*

**physics**

A pair of sleds weighs 25kg and experiences a frictional force of 25N. If a dog team applies a 175N force pulling it 12m. 1. Find the work done by friction 2. Find the work done by the dog team 3. Find the net work done I need to compare my answers so the could you please post...
*May 29, 2014*

**Physics**

a person pushes on a hockey puck with their stick at an angle so the vertical force is 22N down and the horizontal force is 45N forward. Assume the ice is frictionless. What is the actual force the hockey player transmits to the puck? what is the work done by the person ...
*May 29, 2014*

**college algebra **

The sum of three consecutive natural numbers is 651, find the numbers. 3*7*31 21*31=651 is what I put for my answer but that was incorrect on the homework. Please help me Another Question I had problems with was :Your weekly paycheck is 25 percent less than your coworker's...
*May 29, 2014*

**college algebra **

Two cyclists, 64 miles apart, start riding toward each other at the same time. One cycles 3 times as fast as the other. If they meet 2 hours later, what is the speed (in mi/h) of the faster cyclist? Let "x" be the slower rate the faster rate is "3x" x+3=2x ...
*May 29, 2014*

**chem 2**

Consider a chromium-silver voltaic cell that is constructed such that one half-cell consists of the chromium, Cr, electrode immersed in a Cr(NO3)3 solution, and the other half-cell consists of the silver, Ag, electrode immersed in a AgNO3 solution. The two electrodes are ...
*May 29, 2014*

**Precalculus**

How can I type this equation in the graphing calculator? y=pi(25-x)^2 • 2x Note, the 2x is NOT multiplied by 2.. Show how I can type this in .. Parantheses and other notions ......
*May 29, 2014*

**college algebra**

One positive number is one-fifth of another number. The difference between the two numbers is 200, find the numbers. Im not sure how to approach this problem x-1/5 = x+200 ? I also keep wanting to divided 200/5 .. Please help Im all over the place not sure what to do
*May 29, 2014*

**college algebra**

7x+2,000-4x=2830 3x=5030/3 x=1,676 ?
*May 29, 2014*

**college algebra**

Phyllis invested 55000 dollars, a portion earning a simple interest rate of 4 percent per year and the rest earning a rate of 7 percent per year. After one year the total interest earned on these investments was 2830 dollars. How much money did she invest at each rate? 2380-x...
*May 29, 2014*

**Science**

I meant C Oops!!
*May 29, 2014*

**Science**

Oh i get it so it is D?
*May 29, 2014*

**Science**

Is 6 A?
*May 29, 2014*

**Science**

And I don't know 5 or 6
*May 29, 2014*

**Science**

I don't know 3 but i think 4 is D?
*May 29, 2014*

**Science**

Is number 2 A?
*May 29, 2014*

**Science**

Okay I know 1 is b
*May 29, 2014*

**Science**

Really?!?! Please help me!!!!!!!!
*May 29, 2014*

**Science**

6 is D?
*May 29, 2014*

**Science**

1. How does a nuclear power plant produce energy? A. Through solar panels B. Through nuclear fission reactions C. Through geothermal heat D. Through nuclear meltdown reactions<------------ 2. How can human population growth affect ecosystems like rain forests? A. Human ...
*May 29, 2014*

**math**

mbln
*May 29, 2014*

**math**

Todd's birthday has the same date as the number of letters in the mouth ( for example May 3). If his birthday is written in this form - mouth/day/14- and the sum of the mouth and the date is greater than the year (14), what is the probability that his birthday is before ...
*May 29, 2014*

**help**

An advertising blimp hovers over a stadium at an altitude of 125 m. The pilot sights a tennis court at an 8o angle of depression. To the nearest meter, find the ground distance in a straight line between the stadium and the tennis court.
*May 29, 2014*

**Science**

Yes
*May 29, 2014*

**Science**

How do fossil fuels contribute to air pollution? by reversing the greenhouse effect
*May 29, 2014*

**Science**

So the first one??
*May 29, 2014*

**Science**

how can using biomass fuel instead of gasoline in car engines help conserve natural resources? It burns more fossil fuels It reduces the use of coal<--- It uses a renewable resource
*May 29, 2014*

**College Algebra **

Wilma drove at an average speed of 35 mi/h from her home in City A to visit her sister in City B. She stayed in City B 15 hours, and on the trip back averaged 50 mi/h. She returned home 41 hours after leaving. How many miles is City A from City B Distance = Speed * Time D= 35...
*May 29, 2014*

**MATH PLZ HELP**

There are 4 pink erasers and 14 in total so is the answer 4/10 or 2/5?
*May 29, 2014*

**MATH PLZ HELP**

i do not know how to do this question. can someone help me with this question? 7. A jar contains 5 green erasers, 2 striped erasers, 4 pink erasers, and 3 white erasers. You select an eraser at random. What is P(not pink)?
*May 29, 2014*

**Science (Please check!)**

You are Correct:)
*May 29, 2014*

**Math**

can someone help me find 1 - 2/7 in fraction not decimal?
*May 29, 2014*

**Science**

Is #2 B?
*May 29, 2014*

**Science**

4b and 5a
*May 29, 2014*

**Science**

1. Which of the following is the most effective way to preserve biodiversity? A) Captive breeding B) Habitat destruction C) Habitat preservation<---- D) Habitat fragmentation 2. A county commissioner wants to reduce the amount of waste sent to the local landfill. Which of ...
*May 29, 2014*

**Trig**

Charo is 50 feet from the tallest totem pole, located in Alberta Bay, Canada, which has a height of 173 feet. If Charo’s eyes are 5 feet from the ground, find the angle to the nearest degree of elevation for her line of sight to the top of the totem.
*May 29, 2014*

**history japanese americans**

or would not paying them reparation reinforce slavery
*May 29, 2014*

**history japanese americans**

are there any suggestions for this question Why would America pay reparations to victims and family members of Japanese Americans who were placed in internment camps, Jewish survivors and family members of Nazi death camps and even those who we went to war with (see military ...
*May 29, 2014*

**Art**

Variety- Things that are different. Describe two separate instances in the painting of "The Family of Carlos IV" where things are different.
*May 29, 2014*

**Language Arts CHECK ANSWERS**

3. Everyone admired the grandeur of A. the rose garden. B. the mountains. ** C. the car. 10. Which sentence corrects the following sentence? Isnt that she by the side of the pool? A. Is that her by the side of the pool? B. Is that hers by the side of the pool? C. The sentence ...
*May 29, 2014*

**Science**

3rd
*May 29, 2014*

**Science**

Kudzu, a nonnative species, was brought to Georgia for decorative purposes. It is a vine that grows quickly and covers anything in its path. It can also grow on trees and block the sunlight. How is kudzu an environmental issue for Georgia? (1 point) Kudzu can easily be removed...
*May 29, 2014*

**math**

. 3 gal = ____ qt. 22. 5 cups = ____ tsp 23. 15 lb = ____ kg 24. 150 ml = ____ Tbsp 25. 3 qt = ____ oz = _____ tsp
*May 29, 2014*

**algebra**

2x-x^3>=0 solve for x
*May 28, 2014*

**College Algebra **

x/(2x-4)-7=1/(x-2).. How I clear this denominator if I must clear it at all.. Im not sure how to approach these problems.I have several others similar to this 1/2y+ 4= 1/7y I changed the denominators to 14y, then got 7/14y+ 4= 2/7y but my online homework says that is incorrect...
*May 28, 2014*

**College Algebra **

7/(x+1) - 3/2 =6/(3x+3) Im not sure how to begin, I thought abou clearing the denominators by multiply everything by (x+1)(2)(3x+3) but that didnt work out.
*May 28, 2014*

**penn foster**

When three lilies are arranged in a pattern in which the largest lily is lowest and the next one up is smaller and the next one is even smaller than the second, the designer is using the technique called
*May 28, 2014*

**College Algebra **

2/9+-5/6= -8 -(-3/7 k) The answer I got found was 82k=-903 I then divided that by 82 and found k=-11.0121. Which was incorrect, please help me.
*May 28, 2014*

**physics**

The power output of a star is 7.22 x 1028 watts. Every 47.0 seconds, the star converts _________ kg of its mass into energy.
*May 28, 2014*

**geometry**

Rewrite the following in If-then form: the product of x and y is an odd multiple of 5
*May 28, 2014*

**College Algebra **

Let Z be equal to (2-5i) The question is z^2 +iz -(5+i) The answer I got for this was -22 + 18i but it isn't correct on my homework page please help/
*May 28, 2014*

**College Algebra **

Write the following in a+bi form (-5-i)/(3-3i) -5/3 and 1/3i (-5/2i)/(-1/5i) 23 and 0i (-2i)^3 -2 and 0 Im having trouble with these probems and here is my answers. PLEASE HELP
*May 28, 2014*

**College Algebra **

Write the following a+bi form i(3.14-3i) Please help. I believe that the answer is 3.14i-3i, which would be (3.13*-1)-3*-1. however this was incorrect please tell me where I went wrong
*May 28, 2014*

**Science**

1. Which of the following is evidence that groundwater cause erosion and deposition ? a) the formation of meanders b) the formation of large boulders in the desert c) the formation of alluvial fans d) the formation of stalagmites and stalactites in caverns <----
*May 28, 2014*

**Math**

Here are 5 questions I cannot figure out 1. Is every parallelogram a square? 2.Is every rhombus a square? 3. Is every square a rhombus? 4. Is every rectangle a parallelogram? 5. Is every rectangle a rhombus? Thank you so much for answering
*May 28, 2014*

**MATH**

Ido not know how to do this. A jar contains 5 green erasers, 2 striped erasers, 4 pink erasers, and 3 white erasers. You select an eraser at random. What is P(not pink)? (1 point)
*May 28, 2014*

**Science**

Which of the following statements describes the difference between physical and chemical weathering? Chemical weathering changes the composition of a rock, while physical weathering does not.
*May 28, 2014*

**Science**

How is an area’s topography determined? B. By using an areas elevation relief and landforms How do Global Positioning Systems use elevation points on Earth’s system to find latitude and longitude? A. By using signals form a network of satellites How are lakes and ...
*May 28, 2014*

**Science**

Which part of the ocean floor is part of the continuous underwater mountain range that circles Earth? B. Mid-ocean ridge Which of the following statements describes the difference between physical and chemical weathering? B. Physical weathering is caused by ice, while chemical...
*May 28, 2014*

**Science**

How is an area’s topography determined? B. By using an areas elevation relief and landforms How do Global Positioning Systems use elevation points on Earth’s system to find latitude and longitude? A. By using signals form a network of satellites How are lakes and ...
*May 28, 2014*

**math**

After flying at an altitude of 9 kilometers, an airplane starts to descend when its ground distance from the landing field is 175 kilometers. To the nearest degree what is the angle of depression for this portion of the flight?
*May 28, 2014*

**Math**

No, its just one. On my paper it says: 16. A jar contains 120 beads a. What is the angle measure for orange. I got 144. b. How many red beans are there? On the graph it shows the angle measure is 66
*May 28, 2014*

**Math**

A jar contains 120 beads. b. How many red beans are there? The angle degree is 66, how would I find this out? I don't know how to.
*May 28, 2014*

**economics**

are there any welfare or subsidy payments that should be reviewed or added
*May 28, 2014*

**math**

Suppose f(x) = x^3 on the interval [1, 4]. Use the Mean Value Theorem to find all values c in the open interval (1, 4) such that f'(c)= (f(4)-f(1))/4-1 c= square root of 7 c= cubed root of 21 c = 7 Mean Value Theorem does not apply
*May 28, 2014*

**calculus**

Identify the open intervals) where the function f of F(x)= x√10-x^2 is increasing.
*May 28, 2014*

**American government **

the first news about the monica lewinsky scandal appeared: A on FM radio morning jockey shows. B on prime-time news C on CNN D through posts on the internet
*May 28, 2014*

**calculus**

A golf ball is hit off the top of a cliff that is 75 feet tall at an angle of 45° to the horizontal with an initial velocity of 80 feet per second. The quadratic equation shown below models the height, h(x), of the ball when it is x feet from the cliff’s edge. How far...
*May 28, 2014*

**Geometry**

Abcd is a parallelogram. If m<bcd = 113 , then m<dab = ?
*May 28, 2014*

**chemistry**

) A chemist dissolves 1.000 x 103 g of potassium hydroxide in enough water to make 1.5 L of stock solution. The chemist later wants 2.00 x 102 mL of 0.10 M potassium hydroxide. How much stock solution does the chemist need in order to make this second solution?
*May 28, 2014*

**Language Arts (CHECK ANSWERS)**

I believe you are correct :) Anyone else know? lol
*May 28, 2014*

**Physics**

A train 900'm long takes 1minute to cover a bridge of 300 m calculate its average speed
*May 27, 2014*

**trig length**

To secure a 610-meter radio tower against high winds, guy wires are attached to a ring on the tower. The ring is 7 meters from the top. The wires form a 69o angle with the ground. To the nearest hundredth meter find the length of the guy wire
*May 27, 2014*

**English**

There arent any
*May 27, 2014*

**English **

I need help finding quotes about haunting past in the book The Stone Carvers. Please.
*May 27, 2014*

**English**

What food represents bravery? (Someone who is brave)
*May 27, 2014*

**English**

How does Flaubert criticize the institution of family and marriage in Madame Bovary? I need to write an essay and was also wondering if these were good points to talk about. 1. Emma's childhood and the education of girls sets them up for disappointment in marriage because ...
*May 27, 2014*

**physics**

Find the required angular speed, ω, of an ultracentrifuge for the radial acceleration of a point 2.00cm from the axis to equal 6.00×105 g (where g is the acceleration due to gravity).
*May 27, 2014*

**English**

i need a summary of this book
*May 27, 2014*

**Science**

1.How are continental glaciers different from valley glaciers? C. Continental glaciers flow in all directions as they move, while valley glaciers mice down slopes already cut by rivers 2. How does the process of plucking cause erosion D. Rocks are mixed with sediment and ...
*May 27, 2014*

**physics**

What is the maximum walking speed of an adult man whose legs are each 0.90 m long?
*May 27, 2014*

**general chemistry**

how to calculate molarity?
*May 27, 2014*

**algebra**

given the function rule f(x)=x^2-4x+3, what is the output of f(-3)
*May 27, 2014*

**Math**

These two box and whisker plots show the results of a science test. Plot 1: Minimum:65, Maximum:95, Median:82, 1st Quartile:67, 3rd Quartile:88 Plot 2: Minimum:57, Maximum:100, Median:92, 1st Quartile:78, 3rd Quartile:93 What does this information tell you about the results? A...
*May 26, 2014*

**Math**

There are 30 seniors, 15 juniors, 12 freshman, and 10 sophomores in the club. When one student is picked randomly, what is the probability that a sophomore is not chosen? 57/67?
*May 26, 2014*

**Math**

The probability of rolling a number less than 4 on a number cube is ____ 1/2?
*May 26, 2014*

**world history**

Does anyone know any songs that relate to the period of time from 600 CE to 1450 CE?
*May 26, 2014*

**Chemistry**

Dr bob for this question :Calculate the molar solubility of manganese II hydroxide in ph 12.85 solution. The Ksp is 2.1 x 10^-13 but I can't solve for x thanks.
*May 26, 2014*

**Chemistry**

The Ksp is 2.1 times 10 ^-13 But I don't know how to solve for x the answer is 4.2 times 10^-11
*May 26, 2014*

**Chemistry**

Calculate the molar solubility of manganese II hydroxide in ph 12.85 solution.
*May 26, 2014*

**Algebra**

I mean a group at my gym.
*May 26, 2014*

**Algebra**

So if I interviewed a group of people under 10 and interviewed all people in the group, would that meet the requirements?
*May 26, 2014*

**Algebra**

In this activity, you will design and conduct a survey. Select a topic for your survey. d. Are the people you surveyed representative of the group you want to study? What does D mean?
*May 26, 2014*

**Science 207**

3. How would the “weather” be affected if the water was at a decreased temperature? What about at an increased temperature?
*May 26, 2014*

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