Phoebe Jane

please show me how its done...:)

1) find the resultant of the ff. displacements of a car: 50 km north, 40 km East, and 30 km South.

2)a stone is dropped from a window of a tall building & falls for 3s before it hits the ground. How tall is the building? What is the speed of the stone?

3) How much work is done in lifting a 60 kg sack of rice to a distance of 10 m?

4)Calculate the power needed by a crane to raise a 400 kg crate to a height of 16 m in 1 minute?

thanks a lot for your answers i just got confused by these questions..:),

I need several info about:

Some applications of nuclear energy and radioisotopes in:

1. power generation

2. agriculture

3. health and medicine

4. industry

5. research

6. other peaceful applications

Also, the major events and milestones in nuclear science.

Thank you for your help. Please include some helpful websites.:) thanks a lot!

I was a bit confused on how to sketch graph of polynomial functions since I can't understand how to get the values...please give me an example and please answer this one...thanks!

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

How do you get the values of this function to be able to graph it? Thanks a lot!

1. -2x^2 + 4x +6

2. 2x^2 -16x +25

Thank you!!

Find a polynomial function with integral coefficients that has the given numbers as roots:

1. 5,1,4,-1.

2. 1/2, 1/3, -1, 1

3. -1, 0, 1, 3

4. 1/5, 1/2, 1, 2

5. 1/2, 2/3, 1/3, -1.

I just need examples so that I can understand it...

Find the remaining zeros of the polynomial function given one of its zeros.

6. P(x)=48x^3-80x^2+41x-6 x1= 3/4

7. P(x)=3x^4+4x^3-x^2+4x-4 x1= 2/3

8. P(x)=2x^3-15x^2+27x-10 x1= 1/2

How to get the axis of symmetry, vertex and zeros of the functions:

1.f(x)=3x^2-2x-1

2.f(x)=5x^2-12x-9

3.g(x)=2x^2-8x+15

4.g(x)=(x+5)^2-3

I just need examples so that I can know how to do it..:)!

The zeros of functions:

5. f(x)=x^2-8x+6

6.H(x)=2x^2+8x+7

Solve the following problems:

7.The sum of the following numbers is 45. Find their greatest possible product.

8.Find two numbers that their sum is 20 and the sum of their squares is as small as possible.

9.What is the largest rectangular area that can be enclosed with 900 m fencing? Find the dimensions of the rectangle.

10. Lance has 4000 m of fencing to enclose a rectangular land that borders on a wall of a building. If he does not fence the side along the wall, what is the largest area that can be enclosed?

Thanks a lot...:),

does anyone knows what website contains book reviews(full),where i can get it for free?thank you very much...

True or false:

1. In the statement f(x) = x^2, the expression on the right side is called the function rule.

2.The y intercept of the graph of a constant function is always parallel to the x axis.

Find the domain of each function:

1.f(x)=square root of x over x.

2.f(x)=square root of x-2.

3.f(x)=3x over |x|

Problem:

1.An open box is to be made from a rectangular piece of tin 12 inches long and 10 inches wide by cutting pieces of x-inch square from each corner and bending up the sides.

a.find the formula that expresses the volume V of the box as a function of x.

b.find the domain of the function.

3.Jayson, a salesman,receives a monthly salary of 8,000 plus a commission of 10% on his sales. Write the function representing Jayson's monthly wage(W) in terms of monthly sales(S).

Thank u very much!!!:)

This are the only questions I have problems with. Thank u!!!

1.determine whether this is a linear equation and give the solution:

a.y= -5

2.determine if a perpendicular line or parallel line and please give the solution:

a. x= -y + 9 and y= -x-2

3.find the distance between the given points and include the solution:

a. (-3,7),(5, -4)

4.find the intersection of a line y=5-2x and the circle x^2 +y^2 = 5.

5.describe the graph:

a.the point (x,y) is less than or equal to 5 units from the center (3,2) of a circle.

thank you very much for the answers...these are the only ones i can't answer..thank you very much!:):)

1.Describe the functions and advantages of the STOCK system in naming compounds.

2.a compound containing one metal and one nonmetal

3.a naming system that designates the variable charge on a metal cation using Roman numerals in parentheses

4.a chemical reaction of an acid and a base to produce salt and water

5.an ionic compound produced from a neutralization reaction that does not contain a hydrogen ion or a hydroxide ion

thank you very much.:)

1.About linear equations, determine whether each of the following is a linear equation?

a. y= -5

b.x-2y = 4

2.Please explain the intersecting lines computation.

3.determine whether the lines represented by each pair of equations are parallel, perpendicular, or neither parallel nor perpendicular.

a.x= -y +9 and y= -x-2

4.find the distance between the given points

a.(-3,7), (5,-4)

5.About coordinate proof,supply the missing coordinate of a parallelogram of point B,if one side is (a,b) and the opposite of B is (c,0).

6.The graph of these point:

a.The point (x,y) is less than or equal to 5 units from the center (3,2) of a circle.

Thank you for helping me!It's just I always sucked at math and always needed help.Thank you very much!:):)

In a circumscribed circle inside a

a)square=one side of a square,FG, is 16,what is the the measure of the arc CD of the circle?the picture is like a bracket and a parentheses

b)triangle=the angle FD measures 35 degrees.what is the measure of the arc SA of the circle?the picture is like a cone,

thank you,:)

1.Explain the following causes of business failure:

a. Lack of experience

b. Lack of money

c. Unsound or too little analysis in choosing the business

2.Describe the life cycle of products.

3.What is the best way to evaluate business opportunities and why?

tnx for the answers....this would really help a lot...

Avogadro's Law

1.The volume of He is 22.4 L.What is it's pressure and temperature if it's mass is 4g?

2.The pressure of O2 is 11 atm,what is it's volume and pressure if it's mass is 32g?

3.The mass of CO2 is 44g,what is it's volume,pressure and temperature?

Dalton's Law of Partial Pressures

The total pressure of a mixture of a non-reacting gas is 1000 atm.If gas A exerts pressure thrice that of gas B,while gas C exerts pressure twice of gas A,what is the individual partial pressure of each gas?

1.Air contains oxygen,nitrogen,carbon dioxide, and traces of other gases.What is the partial pressure of oxygen(Po2) at 101.30 kPa(kilopascal) of pressure if PN2 =79.10 kPa,Pco2=0.040kPa and p others=0.94 kPa?

2.Determine the volume in liters occupied by 0.202 mol of a gas at STP(at STP 1 mol=22.4 L of a gas).

Thank u for the answers! I hope this is not too much.I just don't understand Dalton's law and Avogadro's law!

1.an automobile antifreeze consists of ethylene glycol C2,H6,O2,a nonvolatile non electrolyte.calculate the boiling point and freezing point of a 25 mass percent solution of ethylene glycol in water.kb of water=0.52 degree Celsius /m; kf of water 1.86 degree Celsius/m

2.glycerin,C3H8O3,is a nonvolatile non electrolyte with a density of 1.26 g/ml at 25 degree Celsius.calculate the vapor pressure at 25 degree Celsius of a solution by adding 50 ml of glycerin to 500 ml of water.the vapor pressure of pure water at 25 degree Celsius is 23.8 torr(molecular mass of water=18 g/mole.

3.what is the boiling point of a solution that contains 1.20 mole of sodium chloride in 800 g of water?if kb of water=0.512 degree Celsius/m?

4.what is the osmotic pressure at 20 degree Celsius of a 0.0020 M sucrose,C12,H22,011 solution?

5.calculate the freezing point of a solution containing 0.600 kg of chloroform,CHCI3,and 42 g of eucalyptol,C10,H18,O, a fragrant substance found in the leaves of eucalyptus trees.kf of CHCI3=4.68 degree Celsius/m.

tnk u for your answers!

1.used to hold the distilling flask or test tube,starts with letter i,ends with letter p.9 letters all in all.

2.used for measuring small volumes of liquid.starts with letter p,ends with letter e.7 letters all in all.

3.a long slanting tube used in distilling process.starts with letter r.ends with letter t.6 letters all in all.

4.used in performing chemical tests direct from the reagent bottle.starts with letter t.ends with letter s.9 letters all in all.

5.used in the collection of distillate to prevent loss due to evaporation.starts with letter a.ends with letter r.7 letters all in all.

6.vessel used to contain chemicals used to bring about a chemical reaction in another substance.starts with letter r.ends with letter e.13 letters all in all.

7.used to evaporate liquids.starts with letter e,ends with letter h.15 letters all in all.

thank u very much.it will help!

1.Mandy worked 8 weeks cleaning coffee trees.in the first week she saved P10,the second week P20,the third week P30,and so on.What was her total savings at the end of 8 weeks?

2.a circular toy consists of 8 rings.the first ring has a diameter of 12.4 cm and the 8 ring has a diameter of 4 cm.what is the diameter of the second ring if the difference between the diameter of any two consecutive rings is constant?

3.Sharon planted an onion bulb and after 4 months,she had 4 onion bulbs. She planted the four onion bulbs and after 4 months,she had 16 onion bulbs.she continued to plant and repead onion bulbs for 3 years.how many onion bulbs did she gather assuming all were healthy plants?

thank you for answering.it means much to me.

1.find the sum of 10 terms of the harmonic sequence 1/10,1/15,1/20,1/25,...

2.expand the binomial (2x +1) to the power of 7.

3.find the term involving y to the power of 5 in the expansion of (x+y) to the power of 7.

4.find the middle term of (x-y) to the power of 2.

tnx....really need this too...thank you sooooo much!

tnx a lot.i need this.: )