Tuesday

July 29, 2014

July 29, 2014

Total # Posts: 70,608

**intro to computers**

A user calls your help desk and says that he is trying to configure his Word document so that the text within his paragraphs is stretched from the left margin to the right margin. What is your advice?

**physics**

7. The speed of a man with and against the water currents in a river are 15km/h and 5km/h respectively. Find his speed in still water and the speed of the water currents.

**physics**

6. Two particles are moving with a constant speed v such that these are always at a constant distance d apart and their velocities are equal and opposite. After what time do these return to their original positions

**Physic**

The tension on a wire is 2640 N. The wire is 2.6 m long and the fundamental frequency is 330 Hz. What is the mass of the wire? (Answer: 2.33g) Answer is provided above. Please show all work on how to get the answer. Thank you!

**math**

At a horizontal distance of 34 meters from the base of a tower, the angle of elevation to the top is 72 degrees. Find the line of sight distance to the nearest meter.

**rounding**

thank you

**rounding**

146.627 rounded to the nearest tenth of a foot? I got 146.6 but that wouldn't be it right, because it has to be a whole number so 147?

**HELP!!!!**

Lee is on a cliff 360 m above sea level, the angle of depression of a ship is 28 degrees. To the nearest meter, what is the distance between the ship and the base of the cliff? Would this be set up 360/tan28 due to it being the angle of DEPRESSION?

**Physic**

A standing wave is formed on a string for which three and one half wavelengths fit into the total length of the string, which is 2.5 m. The wave has a period of 0.10 s. If the string has a mass density of 220 g/m, what is the tension in the string? (Answer: 11.2N) Answer is pr...

**Physics**

Thank you so much

**Physics**

A 2.50 kg fireworks shell is fired straight up from a mortar and reaches a height of 110. m. (a) Neglecting air resistance (a poor assumption, but we will make it for this example), calculate the shell’s velocity when it leaves the mortar. (b) The mortar itself is a tube ...

**Physics**

A 75.0 kg skydiver is free falling at 65.0 m/s when she pops her parachute. As the 'chute opens she slows to 5.50 m/s over a distance of 45.0 m. What force does the parachute exert of her harness during this time?

**help**

A person standing 34 meters from the foot of a chimney finds that the measure of the angle of elevation to the top of the chimney is 52 degrees. To the nearest tenth of a meter, find the height of the chimney.

**how would i set this up?**

According to the Americans With Disabilities Act, a ramp can rise no more than 1 ft for every 12 ft of horizontal distance. To the nearest tenth degree what is the maximum angle that the ramp can form with the ground?

**trig! check my answe please**

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. I set it up 125/tan8, knowing its a rig...

**binomial thearm**

x to the power of 10 +5x to the power of 9 +4x to the power of 8 divided by x+2

**physics**

A 0.180 kg block on a vertical spring with spring constant of 4.00 ✕ 103 N/m is pushed downward, compressing the spring 0.061 m. When released, the block leaves the spring and travels upward vertically. How high does it rise above the point of release?

**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.

**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 stopp...

**Algebra **

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

**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

**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 ?

**Microeconomics**

x 130

**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 .....

**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...

**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 pushin...

**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...

**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 ...

**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 conne...

**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 ......

**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

**college algebra**

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

**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=...

**Science**

I meant C Oops!!

**Science**

Oh i get it so it is D?

**Science**

Is 6 A?

**Science**

And I don't know 5 or 6

**Science**

I don't know 3 but i think 4 is D?

**Science**

Is number 2 A?

**Science**

Okay I know 1 is b

**Science**

Really?!?! Please help me!!!!!!!!

**Science**

6 is D?

**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 popu...

**math**

mbln

**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 ha...

**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.

**Science**

Yes

**Science**

How do fossil fuels contribute to air pollution? by reversing the greenhouse effect

**Science**

So the first one??

**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

**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 ...

**MATH PLZ HELP**

There are 4 pink erasers and 14 in total so is the answer 4/10 or 2/5?

**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)?

**Science (Please check!)**

You are Correct:)

**Math**

can someone help me find 1 - 2/7 in fraction not decimal?

**Science**

Is #2 B?

**Science**

4b and 5a

**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 t...

**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.

**history japanese americans**

or would not paying them reparation reinforce slavery

**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 r...

**Art**

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

**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 ...

**Science**

3rd

**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...

**math**

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

**algebra**

2x-x^3>=0 solve for x

**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...

**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.

**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

**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.

**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.

**geometry**

Rewrite the following in If-then form: the product of x and y is an odd multiple of 5

**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/

**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

**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

**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 <----

**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

**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)

**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.

**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 pon...

**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...

**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 pon...

**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?

**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

**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.

**economics**

are there any welfare or subsidy payments that should be reviewed or added

**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

**calculus**

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

**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

**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...

**Geometry**

Abcd is a parallelogram. If m<bcd = 113 , then m<dab = ?

**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?

**Language Arts (CHECK ANSWERS)**

I believe you are correct :) Anyone else know? lol

**Physics**

A train 900'm long takes 1minute to cover a bridge of 300 m calculate its average speed

**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

**English**

There arent any

**English **

I need help finding quotes about haunting past in the book The Stone Carvers. Please.

**English**

What food represents bravery? (Someone who is brave)

**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 ...

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