# Posts by molly

Total # Posts: 593

**Physics**

A small, single engine airplane is about to take off. The airplane becomes airborne, when its speed reaches 117.0 km/h. The conditions at the airport are ideal, there is no wind. When the engine is running at its full power, the acceleration of the airplane is 2.40 m/s2. What ...

*September 28, 2014*

**Math Homework**

1.) If f(x)=x^2 and g(x)=4x-5, then fg(x)=4x^3-5x^2? True or False? My answer: True 2.) If f(x) =1/x and g(x)=1/x^2, find (g/f)(x). My answer: I need help with this one.

*September 26, 2014*

**Trigonometry**

A hill in the Tour de France bike race has a grade of 8%. To the nearest degree, what is the angle that this hill makes with the horizontal ground? Round to the nearest tenth of a degree.

*September 26, 2014*

**Trigonometry**

In the middle of town, State and Elm streets meet at an angle of 40º. A triangular pocket park between the streets stretches 100 yards along State Street and 53.2 yards along Elm Street. What formula for the area of the pocket park would you use?

*September 26, 2014*

**Trigonometry**

Suppose a triangular silk scarf has both of its shortest sides 14 inches long. If the angle between these sides is 110º, what is the area of the scarf? Round your answer to the nearest tenth of a square inch. (Enter only the number.)

*September 26, 2014*

**Physics 103**

You're squeezing a springy rubber ball in your hand. If you push inward on it with a force of 1 N, it dents inward 2 mm. How far must you dent it before it pushes outward with a force of 3 N?

*September 24, 2014*

**Physics 103**

Your new designer chair has an S-shaped tubular metal frame that behaves just like a spring with the spring constant 13000 N/m. When your friend, who weighs 940 N, sits on the chair, how far does it bend?

*September 24, 2014*

**Algebra1**

How to solve a inequality of -3x+3<6 Please help me!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

*September 22, 2014*

**Algebra1**

Thank you so much God bless you <3

*September 13, 2014*

**Algebra1**

Simplify x-4y+2z-3x-3y+2z=❓can someone help me!!!!!!!😣

*September 13, 2014*

**Physics 1**

A golf ball is struck with a five iron on level ground. It lands 92.0m away 4.20s later. What was (a) the direction and (b) the magnitude of the initial velocity? I have no idea how to go about using the information given to find the first part (A). Even just a hint would be ...

*September 11, 2014*

**writing**

How do you write out a PEEL assessment?? (Point, Evidence, Evaluation, Language)

*September 11, 2014*

**Physical Science**

What volume would 90g occupy?

*September 7, 2014*

**Physical Science**

How many grams would occupy 12cm^3?

*September 7, 2014*

**Physics**

Two point charges are located on the y axis as follows: charge q1 = -2.50nC at y1 = -0.700m , and charge q2 = 3.30nC at the origin (y = 0). What is the magnitude of the net force exerted by these two charges on a third charge q3 = 9.00nC located at y3 = 0.250m ? What is the ...

*September 7, 2014*

**Physics**

Two small plastic spheres are given positive electrical charges. When they are 11.0cm apart, the repulsive force between them has magnitude 0.300N. What is the charge on each sphere if one sphere has four times the charge of the other?

*September 7, 2014*

**Physics**

A charge q1 = 5.00nC is placed at the origin of an xy-coordinate system, and a charge q2 = -2.00nC is placed on the positive x axis at x= 4.00cm . If a third charge q3 = 6.50nC is now placed at the point x= 4.00cm , y= 3.00cm find the x and y components of the total force ...

*September 7, 2014*

**English**

So does that make them a prescriptive or descriptive sentences?

*September 5, 2014*

**English**

I am having some trouble with prescriptive and descriptive rules. I have to decide whether the following sentences are prescriptive or descriptive. 1.) I will talked to you tomorrow about our plans this weekend. 2.) Joe and her love to watch Spartan football every Saturday. ...

*September 5, 2014*

**algebra1**

Thank you so much I got them both right on my quiz!!!!!!!!!!!!!!!😆😆😆😆😆😀😀

*August 27, 2014*

**algebra1**

Thanks which is the following is the most appropriate unit to describe the time you can drive a car based on the amount of gas. Minutes per gallon because the independent quantity is the gallons or gallons per minutes because the independent quality is the gallons

*August 27, 2014*

**algebra1**

114.5

*August 27, 2014*

**algebra1**

During on Alpine skiing event the times of four Scears were listed below time is measured in seconds skier a= 114.36 skier b=14.40 skier c=114.48 skierD =114.44 If the stopwatch used was only accurate to the 10th of a second which skiers time would be different from the others...

*August 27, 2014*

**english**

which is punctuated correctly?????? Despite the rain many people come to the outside wedding. We went to a movie, and did some shopping,after we ate lunch at the deli. Over the summer, many people plan to travel to exotic places, and play at the beach. When I get to school, I ...

*August 26, 2014*

**chemistry**

f 8.77 g of KI are dissolved in enough water to make 4.75 L of solution, what is the molarity of the solution?

*August 10, 2014*

**American Government**

Which is NOT a responsibility of the Department of Energy? To formulate national energy policy To research and develop nuclear and energy technology To regulate the distribution of electricity and natural gas To oversee the construction of national highways

*July 18, 2014*

**Chemistry**

I need help on these three questions. For all three of them you're supposed to write a balanced equation for each neutralization. Then, to find the concentrations of the unknown solutions if the following reactions are found to reach equivalence by titration. The three ...

*June 9, 2014*

**science**

UNSCRAMBLE RDOCRROUTINEDEVELOPMENT to make 2 words having to do with the reproductive system

*June 4, 2014*

**Family**

What career is more worthy to go to college for and save the most money? A.) Vet Tech B.) Preschool/Kindergarden Teacher C.) Pilot D.) Manager A or B ??

*April 2, 2014*

**English 9 - HELP!**

Are they right or not?

*March 11, 2014*

**math**

Brandon has a 55-gallon fish tank. He estimates he can drain the tank at an average rate of 11 gallons per minute. In a linear model of this situation, x represents the number of minutes the tank has been draining. Relative to this situation, what does the y-intercept ...

*March 1, 2014*

**algebra**

Brandon has a 55-gallon fish tank. He estimates he can drain the tank at an average rate of 11 gallons per minute. In a linear model of this situation, x represents the number of minutes the tank has been draining. Relative to this situation, what does the y-intercept ...

*March 1, 2014*

**Physics**

In a two-dimensional tug-of-war, Alex, Betty, and Charles pull horizontally on an automobile tire at the angles shown in the picture. The tire remains stationary in spite of the three pulls. Alex pulls with force of magnitude 207 N, and Charles pulls with force of magnitude ...

*March 1, 2014*

**Physics**

It does not state how to get b and I have been looking through my book and other textbooks and online but cannot find how.

*February 28, 2014*

**Physics**

I did not copy and paste. I simply stated to copy and paste into the Google search bar this question and there are many results with this similar question. Just copy and paste this question and click the first link tha appears (I cannot type the url)and there are three ...

*February 28, 2014*

**Physics**

In a two-dimensional tug-of-war, Alex, Betty, and Charles pull horizontally on an automobile tire at the angles shown in the picture. The tire remains stationary in spite of the three pulls. Alex pulls with force of magnitude 207 N, and Charles pulls with force of magnitude ...

*February 28, 2014*

**algebra**

Which graph best represent following expression|x-1|>2

*February 26, 2014*

**algebra**

Use properties of real numbers to rewrite expression(3/5)(5/3)answers are 8/15,, 15/8,, 0, 1

*February 22, 2014*

**algebra**

Name the property of real numbers illustrated by the equation2·(8·7)=(2·8)·7answers are distributive property, associative property multiplication, communicative property, associative addition

*February 22, 2014*

**algebra**

Name the property of real numbers illustrated by the equation2·(8·7)=(2·8)·7

*February 21, 2014*

**algebra**

Insert<,>or=to make the sentence true -1/3-2/5 answers are. = < >

*February 21, 2014*

**algebra**

Graph the number on a number line 10/7

*February 21, 2014*

**algebra**

To which set of numbers does the number belong-55 answers are, Natural, whole, integers, irrational

*February 21, 2014*

**algebra**

Which inequality represent the following eight fewer than a number is at least sentence 20 answers are. X-8>20. 8-X>20, x+8<20. X-8<20

*February 21, 2014*

**algebra**

Solve the equation or formula for the indicated variable s=3r4t+or t answers are. t=s/3-r. t=r4-3s t=s/3r4. T=811/s

*February 21, 2014*

**algebra**

Solve the equation|2x+10|>26 answers are x<-36or x>16,, x>-18or x<8, x<-18or x>8,x<-8or x>8

*February 20, 2014*

**algebra**

The equation y-100x=2000 can be used to represent monthly salary of a salary of a salesman ,y when he sells x computer system what is the salesman monthly salary if he sells no computer. Answers are 20, 100, 2000, 2100 thank you

*February 20, 2014*

**algebra**

Which of the following is equal to (2x/5-9)+9. Answers are 2x/5, 5x/2, 2x/5-45, (2 x-9)+45

*February 20, 2014*

**algebra**

Which equivalent form following equation 2x-3y=3

*February 20, 2014*

**algebra**

Name property real number illustrated by equation 5+(15+6)=(5:+(15)+6

*February 20, 2014*

**algebra**

Solve the inequality |2x+10|>26

*February 20, 2014*

**algebra**

Solve inequality |2 x+10|26

*February 20, 2014*

**algebra**

Which equivalent form following equation 2x-3y=3 need help doing test thank you

*February 19, 2014*

**algebra**

What is an equivalent form of the following equation 2x-3y=3

*February 19, 2014*

**algebra**

Need help doing a test change the test equation y-100x=2000can be used to represent monthly salary of a salesman when he sells x computer system what is the salesman monthly salary if he sells no computer

*February 19, 2014*

**algebra**

Show all steps solve the problem evaluate the expression for given value of variable|-4b-8|+|-1=b2|+2b3:b=-2

*February 19, 2014*

**algebra**

Need help for a test show all steps to solve problem evaluate the expression for given value of variable. -(4h-1) line is under 4h-1 under line is|th then it is ;h=2 can't text back on kindle don't have a button to reply thank you

*February 19, 2014*

**algebra**

Show all steps solve the equation check for extraneous solution 9|9-8 x|=2x+3

*February 18, 2014*

**algebra**

You had 207.00,but spend 2.00each day which algebraic expression describes the situation,where d represents the number of days ? Answers are 207+d, 205d, 2+207d, 207-2d

*February 15, 2014*

**algebra**

You had 207.00,but 2.00each day which algebraic expression describes the situation where d represents the number of days. Answers are 207+2d, 205d, 2+207d,207-2d

*February 15, 2014*

**Math**

x squared x^2-20x+75

*February 13, 2014*

**math**

an air plane takes off with an elevation of 27degrees. what is the total land distance the plane reaches a cruising altitude of 875 feet ? if the plane is traveling at a steady speed of 651 feet per hour, how much time will it take the plane to reach its cruising distance? ...

*February 13, 2014*

**Physics - please help!!..**

A long thin rod lies along the x-axis from the origin to x=L, with L= 0.890 m. The mass per unit length, λ (in kg/m) varies according to the equation λ = λ0 (1+1.410x2). The value of λ0 is 0.700 kg/m and x is in meters. 1. Calculate the total mass of the ...

*February 12, 2014*

**Physics**

A large horizontal circular platform (M=143.1 kg, r=3.01 m) rotates about a frictionless vertical axle. A student (m=75.3 kg) walks slowly from the rim of the platform toward the center. The angular velocity ω of the system is 2.10 rad/s when the student is at the rim. ...

*February 11, 2014*

**Physics**

A long thin rod lies along the x-axis from the origin to x=L, with L= 0.890 m. The mass per unit length, λ (in kg/m) varies according to the equation λ = λ0 (1+1.410x2). The value of λ0 is 0.700 kg/m and x is in meters. 1. Calculate the total mass of the ...

*February 11, 2014*

**Physics**

something is wrong in the answer, can you explain it again please?..

*February 11, 2014*

**Physics**

A large horizontal circular platform (M=143.1 kg, r=3.01 m) rotates about a frictionless vertical axle. A student (m=75.3 kg) walks slowly from the rim of the platform toward the center. The angular velocity ω of the system is 2.10 rad/s when the student is at the rim. ...

*February 11, 2014*

**Physics**

A long thin rod lies along the x-axis from the origin to x=L, with L= 0.890 m. The mass per unit length, λ (in kg/m) varies according to the equation λ = λ0 (1+1.410x2). The value of λ0 is 0.700 kg/m and x is in meters. 1. Calculate the total mass of the ...

*February 11, 2014*

**Chemistry 1**

Imagine that a hypothetical life form is discovered on our moon and transported to Earth. On a hot day, this life form begins to sweat, and it is determined that the heat of vaporization of its sweat is 215 cal/g. The scientist observing the extraterrestrial life form also ...

*January 24, 2014*

**chemistry**

not really I am just trying to understand what the chemical equation looks like

*November 21, 2013*

**chemistry**

Write the equation for the dissociation of carbonic acid.

*November 21, 2013*

**Math**

it is t over the letter c t and c can be any number just look on your graph and look at the number to copies to the number of secconds thank you,molly

*November 18, 2013*

**Science**

yes that's right

*November 6, 2013*

**Homework Help Calculus**

I tried that answer and it still was incorrect

*October 15, 2013*

**Homework Help Calculus**

Use linear approximation to estimate the amount of paint in cubic centimeters needed to apply a coat of paint 1/100cm thick to a hemispherical dome with a radius of 18 meters. I tried it but I keep getting the wrong answer.Here's what I did below: sphere: V = ⁴/&#...

*October 15, 2013*

**Practice Exam Calculus**

The radius of a sphere was measured to be 20cm with a a possible error of 1/5cm 1).Use linear approximation to estimate the maximum error in the calculated surface area. Leave your answer in terms of pi. 2).Use linear approximation to estimate the maximum error in the ...

*October 15, 2013*

**math**

using d2h/dt2=−g+k(dh/dt)^2, find an expression for the terminal velocity in terms of k and g?

*October 7, 2013*

**Math**

A man on the 8th floor of a building sees a bucket (dropped by a window washer) pass his window and notes that it hits the ground 1.5s later. Assuming a floor is 12ft high (and neglecting air friction), from which floor was the bucket dropped?

*October 7, 2013*

**Math**

Draw all the possible rectangles with a perimeter of 26 cm and whole number lengths of sides. For each rectangle, label the lengths of two adjacent sides

*September 29, 2013*

**Math**

Mike drove to a friends house at a rate of 40 mph he returned by the same route at 45 mph The driving time round trip was 4 hours. write and solve an equation to find the distance Mike traveled

*August 13, 2013*

**Math**

Let V be the volume of a pyramid of height 15 whose base is a square of side 5. Part a). Use similar triangles to find the area of the horizontal cross section at a height y. Part b). Calculate V by integrating the crosss-sectional area.

*July 9, 2013*

**Chemistry**

If you could me solve ths is anyway, it would be much appreciated. A solution containing 3.50g of sodium carbonate is mixed with one that contains 5.00g of silver nitrate. a. Write the complete chemical equation and the net ionic equation for the reaction that occurs. b. What ...

*June 29, 2013*

**Chemistry**

If you could me solve ths is anyway, it would be much appreciated. A solution containing 3.50g of sodium carbonate is mixed with one that contains 5.00g of silver nitrate. a. Write the complete chemical equation and the net ionic equation for the reaction that occurs. b. What ...

*June 29, 2013*

**science**

how can you define the problem how far can you make a rubber stopper fly through the air if the only force applied comes from a gas forming chemical reaction

*May 15, 2013*

**math**

0.9 kg➗ 150 = 0.006 in grams= 6

*May 6, 2013*

**chemistry**

Helium-oxygen mixtures are used by divers to avoid the bends and are used in medicine to treat some respiratory ailments. What percent (by moles) of He is present in a helium-oxygen mixture having a density of 0.528g/L at 25 degree celsius and 721 mmHg ?

*May 4, 2013*

**chemistry**

To identify a diatomic gas (), a researcher carried out the following experiment: She weighed an empty 2.4- bulb, then filled it with the gas at 1.70 and 28.0 and weighed it again. The difference in mass was 4.7 . Identify the gas.

*May 4, 2013*

**Math**

How to figure out 4x+9=1234

*April 28, 2013*

**math**

triangle ABC is an isoscles triangle and semicircle, have same base AB and same area. Find the base angles of the triangle.

*April 23, 2013*

**Biology**

Dephosphorylation in the transuction process needs: A) protein kinases B) protein phosphatases C) single sugar like glucose D)cabohydrate

*April 14, 2013*

**Parametric Equations**

Convert to a rectangular equation by eliminating the parameter: x=(1/t) y=2t+3

*April 13, 2013*

**Biology**

Programmed cell suicide occurs when internal or external signals go through _____ processes. Answer a)reception b)transduction c)response d)all of the above

*April 13, 2013*

**Calculus**

Use 5 right rectangles to estimate the area of the area under the graph of 25−x 2 from x = 0 to x = 5 using 5 left rectangles?

*April 12, 2013*

**Calculus**

Estimate the area under the graph of 25−x 2 from x = 0 to x = 5 using 5 left rectangles?

*April 12, 2013*

**Calculus**

what is the second derivative of (x^3-6x)^11 that is fully simplex

*April 8, 2013*

**Calculus**

does the series 1/(n^2+n) converge or diverge? n=2 to n=infinity

*March 31, 2013*

**Calculus**

does the sum e^n / n! converge or diverge? n=1 --> infinity

*March 31, 2013*

**Calculus**

find the 6th degree Taylor polynomial for f(x)=cosx centered at pi/2

*March 31, 2013*

**Help Ms.Sue Please**

I got 100%

*March 14, 2013*