knd_ninja

A force with magnitude (5.00N/m^2)x^2 and directed at a constant angle of 31.0∘ with the + x axis acts on an object of mass 0.250 kg as the object moves parallel to the x-axis. There are no other forces on the object that have components parallel to the x axis.

How fast is the object moving at x = 1.50 m if it has a speed of 4.00 m/s at x = 1.00 m?

Can someone give an explanation on how to do it?

The first one is:

If the circumference of a circle is multiplied by 5, by how much is the area multiplied?

The answer should be 25 but I keep on getting 10.

The second seems way easier but I don't seem to be getting the right number.

If the price of a plane ticket has increased by 15% to $172.50, what was the cost before the increase?

The answer should be a flat $150 but I keep on getting $146.62.

Could someone please enlighten me by showing how to do this?

The radius of a circle is increased by 20%. What is the percent of increase in area?

Could you show and explanation or work? The answer should be 44% but I don't quite get how to get there.

(2/x)-(2/(2x+1))=1/(x+1)

Could you please show work? I've been having trouble with this. The answer should be x=-2/3 but I can't seem to get to it.

Simplify and express without radicals.

√(x)/11th√(x)

I've been stuck on this. Please show how to do it as well.

Btw, that is the 11th root of x if you didn't catch that. The answer should be x^9/22

It takes 8 hours to fill a tank with a particular chemical. Without treatment, all of the chemical in the tank would evaporate in 12 hours. If the tank is empty to start, and the chemical is not being treated as it enters the tank, how long will it take to have a full tank?

I'm just having trouble with making out the equation for this. Could someone help me with getting the equation

Two road crews, working together, repaired 1 mile of a road in 4 hours. Working seperately, one of the crew takes about 6 hours to repair a similar road. How long would it take the other crew wroking a lone to repair a similar road.

Could someone help me with this?

How long would it take a ball batted upward at an initial velocity of 55 meters per second to be 50 meters above its starting point?

To solve this you need to use the formula d=rt-5t^2

I've been stuck on this question can someone help?

In this question how do you do it?

b^2x^2-2bx+c^2=0

In this question how do you do it?

b^2x^2-2bx+c^2=0

You are supposed to solve by completing the square.

The question is:

2x^2+3x-17=0

I know you're supposed to add 17 to the other side then divide the second term by 2 then square it but in this case what do you do?

(Yeah I know I asked this but I made a minor mistake that changed the whole problem and the result.) =\

You are supposed to solve by completing the square.

The question is:

x^2+3x-17=0

I know you're supposed to add 17 to the other side then divide the second term by 2 then square it but in this case what do you do?

that is still young and in middle school than to enforce the older child who is about to move into a dorm in a few months?

My friends been having this problem and frankly I feel sad for him and think its unfair that they enforce him than his brother who should get used to doing his own chores seeing as he is moving into college.

What's your guys perspective?

I'm starting to understand factoring but how would you factor a problem like this?

x^6-2x^5+7x^4

or

9x^3+12x^2-45x

I don't really get how to do this. Can someone please explain the steps on how to do this. Like can someone solve this and explain how the process works:

3x^3+2x^2+3x+2

Alright so I'm getting my new board in a few days but I cant quite decide which to get. Ventures or Independent? I just thought it'd be good to get opinions of others before I fully decide. I hear Independent trucks are heavy but very good and decent. And I hear that ventures are light and good but dont last real long. I heard Thunders are good from some friends but they seem to heavy to me. The board I want is a light one.

An airplane flew for 4 hours with a 20-km/h tail wind. The return flight against the same wind took 5 hours. Find the speed of the plane in still air.

I cant quite get the two equations from this word problem. If your wondering why there is two its because it is needed to be solved using the Linear Combination method or the Substitution method.

The Taylor family reunion had a record turnout or 38 people last year. For a change of pace, they decided to go ice skating instead of having a picnic. Admission for the group cost $179.50(including skates). How many adults and how many children were at the reunion???

Admission:

Adults-$3.75, Children-$2.50

Admission and skate rental:

Adult-$5.25, Children-$4.00

If not able to be done in Linear Combination how would you do it with the Substitution method?

On a fishing trip, Mariko caught twenty-four fish. She causght some rockfish averaging 2.5lb, and some blue fish averaging 8lb. The total weight of the fish was 137lb. How many of each kind of fish did she catch?

I'm supposed to be solving this by using the Linear Combination method and I'm kinda confused on how you start this off.

I bought this AV Cable from Gamespot or EB I forgot and I've connected it to both an HD tv and an old tv set. the wire contains one end that leads to the psp and the other end for the tv which holds 2 reds, 1 blue, 1 green, and 1 white. Can someone tell me whats the problem and how I'm supposed to plug the wires in?