# Leah

Popular questions and responses by Leah-
## 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* -
## Mathematics

M partially varies as N and P is constant when M=2,N=3,when M=4,and N=2.find M,when N=1

*asked on August 6, 2020* -
## 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* -
## 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* -
## 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* -
## 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 transformation T : (x, y) (x + 3, y + 1). The image of B(4, 1) is

*asked on July 17, 2011* -
## 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

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* -
## 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* -
## 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* -
## Math (Elementary Algebra)

What is the value of the expression 2x^2 + 3xy - 4y^2 when x = 2 and y = -4 ? Please help this is for my accuplacer. If you could show your work explaining how you got the answer that would be awesome. Thank you in advance

*asked on April 18, 2016* -
## 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* -
## Math

If he divides his land into square fields that are 1/3 mile long and 1/3 mile wide how many fields will he have

*asked on September 19, 2018* -
## 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* -
## math

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

*asked on July 18, 2011* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## geometry

Indicate the equation of the line through (2, -4) and having slope of 3/5.

*asked on July 7, 2011* -
## Algebra

The rectangle shown has a perimeter of 118 cm and the given area. Its length is 4 more than four times its width. Write and solve a system of equations to find the dimensions of the rectangle. (rectangle has an area of 528 cm^2) The length of the rectangle

*asked on November 7, 2019* -
## 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

How to solve: 4d^4w^3*6dw^4/3d^3w*8dw^2

*asked on June 22, 2016* -
## 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* -
## MATH

A conveyor belt sushi restaurant lets you choose what you want to eat from variously-coloured plates that go by. You pay based on the colours of the plates. After dinner, 1 green plate, 4 yellow plates, and 2 blue plates. Use the Fundamental Counting

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

Suppose the block is released from rest with the spring compressed 5.50 cm. The mass of the block is 1.60 kg and the force constant of the spring is 965 N/m . Assume the surface is frictionless. A) What is the speed of the block when the spring expands to

*asked on May 26, 2013* -
## science

Mendel performed his experiments on more characteristics than the four shown in the Mendel’s Results table. Why was it important for him to look at more than one characteristic?

*asked on June 28, 2020* -
## Geometry

Find the area of the rectangle with the given base and height. 11ft, 3 in I think answer is 33 ft squared but not sure if it isn't please tell me the correct answer and how you got it

*asked on September 15, 2019* -
## 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

What would the equation look like when the line is parallel to y= 3/4x-3 and has a Y-intercept of 3

*asked on November 20, 2013* -
## 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* -
## 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* -
## 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* -
## geometry

Two circles of equal radius intersect each other such that each circle passes through the center of the other circle. Find the equation for the perimeter of this figure.

*asked on February 1, 2011* -
## math

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

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

In a plan for area codes, the first digit could be any number from 2 through 8, the second digit was either 0 or 1, and the third digit could be any number except 0. With this plan, how many different area codes were possible? My answer:

*asked on March 6, 2017* -
## 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

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

*asked on November 2, 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* -
## 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* -
## Math

She has one board that is 3m7cm long and another board that is 3m 91cm find the total length of he two boards in meters

*asked on November 23, 2015* -
## 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

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 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* -
## 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* -
## 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* -
## Physics

If a bobsled with a total mass of 250kg, reaches the bottom of the hill at a speed of 92mph, how tall was the hill?

*asked on March 1, 2010* -
## chemistry

Mare is preparing an experiment using 3 cups, one made of paper, one of plastic and one of glass. She plans on pouring 50 ml of hot water from a pitcher into each of the 3 cups and record the temperature in 5 minute intervals. What is the independent

*asked on February 23, 2010* -
## Calculus (for Business)

Suppose a fish swimming a distance of L ft at a speed of v fit/sec relative to the water against a current flowing at the rate of u ft/sec (uu+ and interpret your result b) Evaluate the limit of E(v) as v-->infinity and interpret your result

*asked on February 6, 2010* -
## math

my daughter needs help finding a mystery number. 1)when the mystery number is divided by 3,there is a remainder of 1. but it has to be the same thing over again with 4 remainder 2 and 5 remainder 4.And there is one more what is the smallest number that

*asked on December 14, 2009* -
## Medical Physics

A 18000kg airplane lands with a speed of 77 m/s on a stationary aircraft carrier deck that is 115 m long. Find the work done by nonconservative forces in stopping the plane. I have an exam on this tomorrow and I am confused any help would be appreciated.

*asked on October 13, 2009* -
## 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* -
## math

An architect is designing a circular opening 16 feet in diameter to make room for a spiral staircase. If pi = 3.14, what will the circumference of the circular opening be? 50.24 feet

*asked on October 9, 2019* -
## math

Use an algebraic equation to find the measures of the two angles described below. Begin by letting x represent the degree measure of the angle's supplement. The measure of the angle is two times greater than its supplement.What is the measure of the

*asked on September 17, 2019* -
## 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* -
## 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* -
## history

Step 1: Choose four of the following questions to ask Moses, Jesus, and Muhammad: Why is the Holy Land an important site for your faith? What is your perspective or feelings about the other monotheistic faiths? What is the holy book of your faith, and how

*asked on September 2, 2016* -
## math

Write the first four terms of the geometric sequence with the given properties. a = 5 , r = 14 a. 5/68 b. 5/71 c. 5/16 d. 5/48 e. 5/64 f. 5 g. 5/4 identify one or more choices that answer the question

*asked on August 27, 2016* -
## Elementary Statistics

SAT math test scores for all students taking the test are approximately normally distributed with mean score of 514 and std. deviation of 118. What is the probability that a randomly chosen student will earn a score above 600 on their SAT math test?

*asked on April 16, 2016* -
## Math

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

*asked on February 8, 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 (Solving Equations)

Find all solutions (answers should be given in simplified form). Some answers may involve the number i. (x^2/6) - (2x/3) = 3 + (x/2) I turned (2x/3) into (4x/6) and subtracted it from (x^2/6) to get: x(x-4) / 6 I turned 3 into 6/2 and added it to (x/2) to

*asked on May 17, 2015* -
## 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 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* -
## Calculus

find the intervals on which f(x) is increasing and decreasing along with the local extrema. f(x)=x^4 + 18x^2 I took the derivative and got: f'(x)= 4x^3 + 36x When I set this to zero, I get the imaginary number 3i. I can't get test values for an imaginary

*asked on November 3, 2014* -
## math

Find the critical numbers for f=5+10x-x^{2} in the interval [-3,3].Also find the minimum and maximum.

*asked on October 20, 2014* -
## reading

what is another word for things?

*asked on August 19, 2014* -
## science

can you please help me find 3 good science experiment? for the science fair....

*asked on August 19, 2014* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## 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* -
## MATH

THE AREA OF A RECTANGUALR GARDEN IS 240 SQ FT. IF THE LENGTH OF THE GARDEN IS 240 FT.,WHAT IS ITS WIDTH?

*asked on April 10, 2013* -
## Physics

You are standing on top of a building that is 75-m high and you throw a 4-kg stone horizontally at a speed of 6.6-m/s. How far from the base of the building will the stone land? (the ground is flat)

*asked on March 6, 2013* -
## Chemistry

Need help on a lab results write-up. The lab is the synthesis and analysis of a transition metal complex. General reaction was stated as: Fe(III) + x(acac) -> Fe(acac)x - we were to determine x by completing experiment. x = 1, 2, 3, 4... acac = 2, 4

*asked on February 14, 2013* -
## Chemistry

what are the products when water,ferric chloride and ammonium thiocyanate are combined?

*asked on January 27, 2013* -
## 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* -
## Accounting

purchased dental equipment at 15,000 and invested cash of 500,000

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

Indicate the equation of the line that is the perpendicular bisector of the segment with endpoints (4, 1) and (2, -5).

*asked on July 8, 2011* -
## 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* -
## math

how many times must the number 5 be subtracted to find the quotient of 5/5?

*asked on February 2, 2011* -
## Math

Are the differential equations separable or not? 1. y'= ye^(x+y) 2. y'= ye^(xy) 3. y'= y(xcos(y)) If they are, could you show how? Any help, even on one, would be extremely appreciated!

*asked on February 2, 2011* -
## Chemistry

For Carbon dioxide, for a volume of 500 mL and temperature of 100 degrees celcius, calculate the pressures using the ideal gas law and the van der Waals equation. Explain any dicrepancies in the calculated values. Ideal Gas Equation: Van Der Waals Equation

*asked on November 1, 2010* -
## Chemistry

The heat of fusion for water is 80cal/g. The specific heat of liquid water is 1.00cal/g. How many calories of heat are released when 20g of water at 30 degrees is cooled to 0 degrees and frozen to ice at 0 degrees?

*asked on July 19, 2010* -
## 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* -
## Spanish

how would you answer this question with affirmative commands and a direst object pronoun? Leo el libro de la historia de Oaxaca? Visito los museos? Compro la chaqueta? Escribo cartes? Compro el video sobre Monte Alban?

*asked on April 18, 2010* -
## Spanish

I need to create a sentence to tell the following people's opinions. Tu / que / es aburrido(a) Yo / Que / es emocionante Nosotros/ que / es important para la ciudad. Los maetros/ que / es interesante Mi amigo(a) / que / es divertido(a)

*asked on April 18, 2010* -
## 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* -
## Physics

An object is placed on an inclined plane which forms an angle B = 18º with the horizontal. An external force F of magnitude 14.3 N is applied to the object. The force F acts in a direction which forms an angle A = 62º with the horizontal. As a result of

*asked on November 17, 2009* -
## literary

what is foreshadowing and what is flashback?

*asked on October 12, 2009* -
## 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* -
## physics

An incident X-ray photon of wavelength 0.2800nm is scattered from an electron that is initially at rest. The photon is scattered at an angle of 180.0 degrees and has a wavelength of 0.2849nm. Use the conservation of linear momentum to find the momentum

*asked on April 26, 2008* -
## 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* -
## science

how do pesticides affect fertilisers herbicides in a food web? help!

*asked on October 27, 2007* -
## FRENCH! HELP!

so i have this french test tomorrow on imparitive, and subjonctif. i have had a lot of trouble remembering them, and telling them apart. can anyone help!? that would be fantastic! thank you so much! its urgent! Imperative (note spelling) means giving a

*asked on December 20, 2006*