# leah

Most popular questions and responses by leah-
## social studies

1)An interest rate is a special type of? a. loan b. price c. bank d. service 2) How does a compound interest rate differ from a simple interest rate? a. Compound interest rates pay more interest over time b. Compound interest rates are calculated only once

*asked on January 7, 2015* -
## English Lit

I have two questions about these Emily Dickinson's "Wild Night" 1.Which best describes the rhyme in the second stanza--internal rhyme,slant rhyme,feminine rhyme,descending rhyme or no rhyme Would it be slant rhyme? 2.Which is the following sound device

*asked on October 7, 2011* -
## Math

The pressure, P (in lbs/ft2), in a pipe varies over time. Three times an hour, the pressure oscillates from a low of 88 to a high of 254 and then back to a low of 88. The pressure at t=0 is 88. Find a possible cosine formula for P=f(t), where t is time in

*asked on November 2, 2014* -
## math

The maturity value of a $28,000, 6%, 60-day interest-bearing note on August 6 is

*asked on April 8, 2017* -
## math

what is the missing value to the nearest hundredth? tan [] = 12 I really need some help. I don't understand this :(

*asked on May 24, 2016* -
## chemistry

The complete combustion of propane, C3H8(g), is represented by the equation: C3H8(g) + 5 O2(g) → 3 CO2(g) + 4 H2O(l) ΔH° = -2220 kJ How much heat is evolved in the complete combustion of 20.0 L C3H8(g) at STP?

*asked on May 14, 2014* -
## Math

John is using a pulley to lift the sail on his sailboat. The sail weighs 150 N, and he must lift it 4.0 m. a. How much work must be done on the sail? b. If the pulley is 50% efficient, how much work must John do on the rope to lift the sail?

*asked on November 3, 2012* -
## math

An ostrich farmer wants to enclose a rectangular area and then divide it into 4 pens with fencing parallel to one side of the rectangle. There are 720 feet of fencing available to complete the job. What is the largest possible total area of the 4 pens?

*asked on October 28, 2014* -
## physics!

The mass of an automobile is 1160kg, and the distance between its front and rear axles is 2.54m. The center of gravity of the car is between the front and rear tires, and the horizontal distance between the center of gravity and the front axle is 1.02m.

*asked on January 5, 2008* -
## physics

A 75 kg pilot flies a plane in a vertical loop. At the top of the loop, when the plane is completely upside-down for an instant, the pilot hangs freely in the seat and does not push against the seat belt or seat. The airspeed indicator reads 120 m/s. What

*asked on November 20, 2014* -
## English

Identify the term that best describes the words/phrases in parentheses. 1. The teacher asked her pupils to (stay) put during the screening of the documentary. linking verb action verb 2. The committee judged the logo (the most appropriate symbol) for the

*asked on January 23, 2013* -
## English 10 A

Has anyone took the "alone, The nobel prize , First Frost" quiz? if so please help thank you so much!! i will try to help in return.

*asked on October 22, 2015* -
## Math

For this problem, a person standing on the edge of a cliff throws a rock directly upward. it is observed that 2 secs later the rock is at its maximum height (in feet) and that 5 secs after that (meaning 7 seconds after being thrown) the rock hits the

*asked on October 7, 2014* -
## English(Poetry)

What is prose paraphrase, and how do you do it to a poem?

*asked on January 11, 2016* -
## Social Studies

1.How did the Portuguese use geographic factors to help them control the spice trade? * a.They conquered inland kingdoms, which they turned into a trading empire. b.They used force and diplomacy to set up coastal trading posts and seize key ports around

*asked on January 4, 2017* -
## Math- integers

Explain the meaning on 0 : a decrease of 250 attendees

*asked on January 4, 2017* -
## Math

12a-3b2. When a=9 b=4. Please explain steps

*asked on November 2, 2016* -
## English

5. Sarita's party takes place at night and all the villagers are gathered there. How do these details help make the party a good setting for the stranger to accomplish his goal? (1 point) * He can arrive and escape without people seeing him. * It will take

*asked on March 18, 2010* -
## Math

How would you solve this word problem in one variable inequality form? One cell phone company offers a plan that costs $29.99 and includes unlimited night and weekend minutes. Another company offers a plan that costs $19.99 and charges 35 cents per minute

*asked on September 25, 2013* -
## chemistry

a current is passed through 500 mL of a solution of CaI2. the following electrode reactions occur: anode: 2I- ---> I2 + 2e- cathode: 2H2O + 2e- ---> H2 + 2OH- after some time, analysis of the solution shows that 35.7 mmol of I2 has been formed. a) how many

*asked on June 18, 2012* -
## Physics

The archerfish hunts by dislodging an unsuspecting insect from its resting place with a stream of water expelled from the fish's mouth. Suppose the archerfish squirts water with a speed of 2.45 m/s at an angle of 53.0 degrees above the horizontal, and aims

*asked on September 15, 2009* -
## Math

An Aircraft Flies Round A Triangular Course. The First Leg Is 200km On A Bearing Of 115km And The Second Leg Is 150km On A Bearing Of 250km. Draw A Diagram For This

*asked on March 9, 2017* -
## Physics

A 31.9 N object is in free fall. What is the magnitude of the net force which acts on the object? Answer in units of N.

*asked on January 7, 2016* -
## Stats

The data below were gathered on a random sample of 5 basking sharks, swimming through the water and filter-feeding, i.e. letting the water bring food into their mouths. Body Length (meters) Mean Speed (meters/seconds) 4 0.89 4.5 0.83 4 0.76 6.5 0.94 5.5

*asked on September 30, 2016* -
## Chemistry

If you want to lose 5 pounds of body fat which is 15percent water, how many kilocalories do you need to expend?

*asked on September 9, 2018* -
## Math

How can I show 1/3x+10=3/5x as or in a real world problem??

*asked on February 8, 2016* -
## stats

2. The modern Olympic Games are a modified revival of the Greek Olympian Games that came to be largely through the efforts of the French sportsman and educator Baron Pierre de Coubertin. The Games are an international athletic competition that has been

*asked on September 30, 2016* -
## math

A study of two types of weed killers was done on two identical weed plots. One weed killer killed 15% more weeds than the other. This difference was significant at the 0.05 level. What does this mean? A. The improvement was due to the fact that there were

*asked on April 16, 2015* -
## college chem

You are instructed to create 400. mL of a 0.40 M phosphate buffer with a pH of 6.9. You have phosphoric acid and the sodium salts NaH2PO4, Na2HPO4, and Na3PO4 available. (Enter all numerical answers to three significant figures.) H3PO4(s) + H2O(l)

*asked on June 23, 2014* -
## Calculus

Use the position function s(t)=-4.9t^2+ 150, which gives the height (in meters) of an object that has fallen from 150 meters. Teh velocity at time t=a seconds is given by: lim as t approaches a s(a)-s(t) divided by a-t a) find the velocity of the object

*asked on August 31, 2007* -
## physics

An athlete leaves one end of a pool of length L at t = 0 and arrives at the other end at time t1. She swims back and arrives at the starting position at time t2. If she is swimming initially in the positive x direction, determine her average velocities

*asked on January 22, 2015* -
## Physics

A baseball is hit at ground level. The ball is observed to reach its maximum height above ground level 3.0 s after being hit. And 2.5 s after reaching this maximum height, the ball is observed to barely clear a fence that is 97.5 m from where it was hit.

*asked on May 13, 2012* -
## algebra

On the day a child was born, a lump sum P was deposited in a trust fund paying 6.5% interest compounded continuously. Use the balance A of the fund on the child's 29th birthday to find P. (Round your answer to the nearest cent.) A = $5,000,000 P = $1

*asked on November 1, 2011* -
## algebra

If a rocket is launched with an initial velocity of 1600 feet per second when will the rocket be 14400 feet high?

*asked on February 7, 2012* -
## Chemistry - Acids/Bases

What kinds of compounds are typically strong bases? (More than one may apply.) *hydroxides of group IIIA (13) metals *conjugate bases of strong acids *hydroxides of group IA (1) metals *hydroxides of transition metals *hydroxides of group IIA (2) metals

*asked on May 9, 2015* -
## stats

4. One measure of form for a runner is stride rate, defined as the number of steps per second. A runner is considered to be efficient if the stride rate is close to optimum. The stride rate is related to speed; the greater the speed, the greater the stride

*asked on September 30, 2016* -
## Chemistry

when 5.00 g of CaCl2 dissolves in 50.0g of water, what is the boiling point of the solution

*asked on April 17, 2011* -
## Chemistry

A solution contains a mixture of Cl- and Br- ions. Can both be positively identified? Briefly explain and write appropriate equations to support your answer.

*asked on March 23, 2011* -
## math

a marine biologist wants to know the vertical distance a dolphin traveled during a jump.with the surface f the water being zero , it started under water at -35 feet, jumped up and out of the water to 27 feet. and returned to the water at -18 feel. what is

*asked on November 4, 2018* -
## physics

The charges of two identical aluminum speheres are -24uC and +4.0uC. The spheres are brought together so they simultaneously touch each other. They then separated and placed on the X-axis. What is the net force exerted b one sphere on another after

*asked on April 29, 2010* -
## ST KYLINS

I have 9 digits. My ten millions digit is a 0 and is 8 less than my hundreds digit. My hundred millions digit is 1 less than my thousands digit, 8 more than my millions digit, twice my ten thousands digit, and 4 times my hundred thousand digit. My digits

*asked on December 15, 2016* -
## math

The volume V of a pyramid varies jointly as its height h and the area of its base B . Given that the volume of the pyramid is 60 cubic inches when the height is 5 inches and area of its base is 36 square inches, what is the area of the base if its volume

*asked on October 19, 2015* -
## Math

Determine whether each verbal description represents a linear function or not. Correct me if I'm wrong on any of these!! 1. Jova walks quickly for 25 minutes then she rests for 5 minutes before continuing on for another 10 minutes. (NOT A LINEAR FUNCTION)

*asked on October 30, 2013* -
## Chemistry

Explain why the calculated value for the (1) enthalpy of combustion for propane using bond energies (bond breaking and bond formation)might not be in close agreement to the values calculated using (2) Hess Law and the values calculated using the (3)

*asked on November 1, 2010* -
## please help me, physics

Five moles of a monatomic ideal gas expand adiabatically, and its temperature decreases from 410 to 200 K. (a) What is the work done by (or done to) the gas? Include the algebraic sign. J (b) What is the change in the internal energy of the gas? Include

*asked on December 10, 2010* -
## math

Sally and Marta had the same number of postcards. After Sally sold 18 of her postcards, Marta had 4 times as many postcards as Sally. How many postcards did each girl have to begin with?

*asked on October 1, 2013* -
## chemistry

The pressure in an automobile tire is 1.85 atm at 27.0°C. What will be the pressure if the temperature increases to 38.0°C?

*asked on March 20, 2014* -
## Math

Tracy has one can of iced tea mix one scoop of the mix makes two servings of iced tea the scoop holds 1/12 of a can how many servings of ice tea can Tracy make

*asked on May 30, 2019* -
## Stats

Grey Kangaroos are large, social marsupials, indigenous to Australia. The Eastern Greys are a light grayish brown, while the Western Grey is a copper brown color. As part of a study of the development of these creatures, biologists have measured various

*asked on September 26, 2016* -
## simplex Method

Solve the linear programming problem by the simplex method. Maximize P = 5x + 4y subject to 3x + 5y < 78 4x + y < 36 x > 0, y > 0 x = y = P =

*asked on April 24, 2011* -
## Math

A sixth number will be added to the list. What must it be in order for the mean to be 12? (Use algebraic equation to help)

*asked on February 21, 2017* -
## Simplex Method

Solve the linear programming problem by the simplex method. Maximize P = 10x + 6y subject to x + y < 80 3x < 90 x > 0, y > 0 x = y = P =

*asked on April 24, 2011* -
## Math

What is the final price of a textbook that costs $107.20 with an added tax rate of 6%?

*asked on February 5, 2016* -
## math

Write the first five terms of the sequence. (Assume that n begins with 1.) a (subtext)n =−7n+8 a. 8, 1, –6, –13, –20 b. 1, –6, –13, –20, –27 c. 1, –14, –21, –28, –35 d. 1,9,17,25,33 e. –15, –22, –36, –36, –43

*asked on August 27, 2016* -
## MATH

A hockey game is preparing for a group photo. The team has 1 goalie, 4 defense, and 7 forwards. The photographer wants two rows of six players. How many ways can the team arrange six players in the front row with at most 2 defense?

*asked on May 11, 2014* -
## Physical Science

When you do 100 J of work on the handle of a bicycle pump, the pump does 40 J of work pushing the air into the tire. What is the efficiency of the pump?

*asked on November 3, 2012* -
## Math

On a random day in the spring 88% of the students are present at school.If there are 528 students presents how many total students are enrolled?

*asked on October 26, 2016* -
## Math

A projectile is shot upward from the earth with an initial velocity of 320 ft/sec. (a) What is the velocity after 5 secs.? ft/sec. (b) What is the acceleration after 3 secs.? ft/sec^2.

*asked on October 7, 2014* -
## health

Visiting your doctor for regular check-ups is an example of which step you might take to meet take to meet your health goals? A. gain awareness. (B). gain knowledge. C. build health skill. D. set goals.

*asked on September 10, 2014* -
## Physics

A constant torque of 27.2 N · m is applied to a grindstone for which the moment of inertia is 0.158 kg · m2. Find the angular speed after the grindstone has made 18 rev. Assume the grindstone starts from rest. Answer in units of rad/s

*asked on November 11, 2011* -
## Math

If a ball is thrown vertically upward from the roof of 48 foot building with a velocity of 80 ft/sec, its height after t seconds is s(t) = 48+80t-16t^2 What is the velocity of the ball when it hits the ground?

*asked on October 7, 2014* -
## Quadratics

Write the coordinates of the image of the pont (-3,9) on the graph y=x^2 when each of the following transformations are applied: a) a reflection in the x-axis followed by a vertical translation 4 units up b) a vertical stretch by a factor of 1/3 about the

*asked on March 3, 2019* -
## physics

Hans uses a wheelchair. Although he has a rampto in his house, he finds it difficult to get his wheelchair up the ramp. Whcih modification would make it easier for Hans to get in his house? a. increase the length of the ramp b. increase the friction

*asked on February 23, 2010* -
## Algebra

Show all steps and Find the maximum revenue for the revenue function R(x)= 360x - 0.05x^2

*asked on November 10, 2013* -
## simplex Method

A company manufactures two products, A and B, on two machines, I and II. It has been determined that the company will realize a profit of $3/unit of product A and a profit of $4/unit of product B. To manufacture 1 unit of product A requires 6 min on

*asked on April 24, 2011* -
## Math

A spherical balloon is to be deflated so that its radius decreases at a constant rate of 12 cm/min. At what rate must air be removed when the radius is 5 cm? Must be accurate to the 5th decimal place. It seems like an easy question but no matter how many

*asked on October 5, 2014* -
## MATH

A paper bag contains a mixture of three types of treats: 12 granola bars, 10 fruit bars, and 8 cheese strips. Suppose that you play a game in which a treat is randomly taken from the bag and replaced, and then a second treat is drawn from the bag. You are

*asked on May 10, 2014* -
## Physics

A 5.0g silver spoon at 20.0C is placed in a cup of coffee at 90.0C. How much heat does the spoon absorb from the coffee to reach a temperature of 89.0C?

*asked on January 31, 2011* -
## Chemistry 1

I have trouble understanding ratios and relativity so I can't understand how to use atomic mass units. Here is an example from my book: How many grams of iron would contain the same number of iron atoms as the number of carbon atoms contained in 1.000 g of

*asked on September 11, 2010* -
## Math

You want to estimate the mean amount spent by customers at a local gas station with 98% confidence and a margin of error of no more than $2. Preliminary data suggests that the standard dev. is $5.1 is a reasonable estimate for the standard dev. for all

*asked on February 19, 2011* -
## math

A transformation T : (x, y) (x + 3, y + 1). The image of B(4, 1) is

*asked on July 17, 2011* -
## geometry

In rectangle ABCD, if the coordinates of A are (0, 0) and the coordinates of C are (r, s), find the coordinates of B.With A and D being on the bottom line and B and C on the top with B over A.

*asked on July 6, 2011* -
## math

Formulate a system of equations for the situation below and solve. A theater has a seating capacity of 660 and charges $2 for children, $4 for students, and $6 for adults. At a certain screening with full attendance, there were half as many adults as

*asked on March 28, 2011* -
## Math

Determine whether each verbal description represents a linear function or not. Correct me if I'm wrong on any of these!! 1. Jova walks quickly for 25 minutes then she rests for 5 minutes before continuing on for another 10 minutes. (NOT A LINEAR FUNCTION)

*asked on October 30, 2013* -
## Physics

A person pushes a 11.0 kg lawn mower at constant speed with a force of 76.0 N directed along the handle, which is at an angle of è = 41.0° to the horizontal. Calculate the normal force exerted vertically upward on the mower by the ground. Calculate the

*asked on November 28, 2011* -
## Simplex Method

Solve the linear programming problem by the simplex method. Maximize P = 27x + 27y + 36z subject to x + y + 3z < 15 4x + 4y + 3z < 65 x > 0, y > 0, z > 0 x + y = z = P =

*asked on April 24, 2011* -
## English 4

Which of the following most distinguishes an epic from a mock epic? A. its subject matter B. its style C. its vocabulary D. its length I'm thinking its B.

*asked on September 6, 2012* -
## AP Chemistry

Which response includes all of the following LiOH, KOH, Ni(OH)2, Mg(OH)2, Ca(OH)2 that are insoluble bases, and no others?

*asked on October 13, 2010* -
## Social Studies

Why did Korea and Japan choose a policy of isolationism? * a.They were following Chinese policies toward foreigners. b.They thought that foreign goods were of inferior quality. c.They felt that foreigners threatened their independence. d.They were occupied

*asked on January 4, 2017* -
## history

Cyril and Methodius were missionaries to the Slavs who A.translated the Bible into the new alphabet written for the Slavic language B. were excommunicated by Pope Gregory II for their Slavic writings supporting icons C.were iconoclasts who spoke out

*asked on August 29, 2016* -
## University Physics

A small box is held in place against a rough vertical wall by someone pushing on it with a force directed upward at 28degrees above the horizontal. The coefficients of static and kinetic friction between the box and wall are 0.40 and 0.30, respectively.

*asked on September 28, 2009* -
## algebra

Goran invested his savings in two investment funds. The amount he invested in fund A w!@#$%^&2000 less than the amount he invested in fund B. Fund A returned a 3% profit and fund B returned a 2% profit. How much did he invest in fund A, if the total profit

*asked on April 5, 2016* -
## Physics

A heavy-duty stapling gun uses a 0.162-kg metal rod that rams against the staple to eject it. The rod is pushed by a stiff spring called a "ram spring" (k = 32657 N/m). The mass of this spring may be ignored. Squeezing the handle of the gun first

*asked on November 13, 2011* -
## Physics

A book is moved once around the edge of a tabletop with dimensions 1.75m x 2.25m. If the book ends up at the initial position, what is its displacement? If it completes its motions in 23s, what is its average velocity? What is its average speed?

*asked on August 28, 2011* -
## HELPPP

Solve the linear programming problem by the method of corners. Minimize C = 5x + y subject to x + 3y ≥ 43 x + y ≥ 27 x ≥ 0, y ≥ 0

*asked on April 18, 2011* -
## science

Compare the costs and benefits of hydropower to that of geothermal power. (Please include two costs and two benefits.)

*asked on September 23, 2016* -
## statistics

A study of two types of weed killers was done on two identical weed plots. One weed killer killed 15% more weeds than the other. This difference was significant at the 0.05 level. What does this mean? A. The improvement was due to the fact that there were

*asked on April 16, 2015* -
## Physics

a 40kg girl and a 30kg boy face each other on friction free roller skates. the boy pushes the girl,

*asked on May 19, 2014* -
## Foundations Math 12

Forty eight weeks ago, Gabriella invested money at 3.9% interest, compounded weekly. Today, her investment is worth $225.50. How much interest has Gabriella's account earned in the past 48 weeks?

*asked on February 16, 2014* -
## chemistry

a certain solution contains 0.35 mol of HCl in 1200 mL of water. What is the pH of the solution?

*asked on March 7, 2011* -
## calculus

Consider the function f(x)=12x^5+30x^4–300x^3+2. f(x) has inflection points at (reading from left to right) x=D,E, and F. where D is___, E is____, and F is____.

*asked on November 12, 2009* -
## chemistry

Answer the following for a primitive cubic unit cell. Answers should be numerical, set r = 7.0. edge in terms of r, the lattice pt radius=? face diagonal in terms of r, the lattice pt radius=? body diagonal in terms of r, the lattice pt radius=?

*asked on February 16, 2009* -
## chemistry

An aspirin tablet weighing 0.475 g has been analyzed and contains 68.2 % ASA (180.16 g/mol) by mass. A student dissolved the tablet in hot NaOH and the cooled solution was diluted with DI water to the mark in a 250 mL volumetric flask. Exactly 3.00 mL of

*asked on January 26, 2009* -
## physics

A person walks first at a constant speed of 5.10 m/s along a straight line from point circled A to point circled B and then back along the line from circled B to circled A at a constant speed of 3.15 m/s.(a) What is her average speed over the entire trip?

*asked on January 21, 2015* -
## Math

A company replaces their cars every 6 years. A car is worth $13520 after 2 years. The company uses a depreciation rate of 35% a year. a) How much will the car be worth when the company replaces it? b) How much did the car cost when it was purchased?

*asked on March 9, 2014* -
## Foundations Math 12

48 weeks ago, Gabriella invested at 3.9% interest, compounded weekly. Today, her investment is worth $225.50. How much interest has Gabriella's account earned in the past 48 weeks?

*asked on February 16, 2014* -
## Math

Determine whether each verbal description represents a linear function or not. Correct me if I'm wrong on any of these!! 6.The price for x pounds of cheese at $6.99 per pound (LINEAR FUNCTION) 7. A car accelerating on the highway to reach a speed of 62 mph

*asked on October 30, 2013* -
## Physics

At the beginning of a basketball game, a referee tosses the ball straight up with a speed of 5.4 m/s. A player cannot touch the ball until after it reaches its maximum height and begins to fall down. What is the minimum time that a player must wait before

*asked on September 23, 2012* -
## chemistry grade 11

A molecule of CHCl3 (chloroform), has the same shape as a molecule of carbon tetrahydride, CH4. But carbon tetrahydride’s boiling point is -164º C and chloroform’s boiling point is 62 ºC. Explain the difference between the boiling points of the two

*asked on September 21, 2012* -
## Please help! (Calculus)

Solve initial value problem explicitly: 1. y'= ye^-x, y(0)=1 2. y'= 5xe^-y, y(1)=1

*asked on February 2, 2011*