# melissa

Newest questions and responses by melissa-
## history

which factors in west and east africa allowed their cultures to endure??

*asked on November 7, 2018* -
## physics

Superman is said to be able to ''leap buildings in a single bound'' How high a building could Superman jump over if he were to leave the ground with speed of 98.0 m/s at an angle of 87.0 degrees to the horizontal?

*asked on October 29, 2018* -
## math

A farmer has 90 meters of fencing and would like to use the fencing to create a rectangular garden where one of the sides of the garden is against the side of a barn. Let L represent the varying length of the rectangular garden (in meters) and let A

*asked on September 2, 2018* -
## math

Isolate A for H=K+log(a/c)

*asked on August 27, 2018* -
## Algebra 2

The given point lies on the terminal side of an angle ϴ in standard position. Find the value of the six trigonometric functions of ϴ.(2, -4)

*asked on April 16, 2018* -
## Math

Ashley needs 4.6 yards of chain to hang some flower baskets. The chain is sold by the meter. She knows that 1 yard=0.914 meter. How many meters of chain does Ashley need?

*asked on February 15, 2018* -
## Chemistry

In the following reaction, first find how many oxygen molecules would be used to completely react with 230 grams of pentyl alcohol (C5H11OH)? Then, if exactly 1.505x10^21 carbon dioxide molecules were formed in this reaction, calculate the grams of water

*asked on November 25, 2017* -
## Chemistry

In the following reaction, first find how many oxygen molecules would be used to completely react with 230 grams of pentyl alcohol (C5H11OH)? Then, if exactly 1.505x10^21 carbon dioxide molecules were formed in this reaction, calculate the grams of water

*asked on November 24, 2017* -
## Chemistry

In the following reaction, first find how many oxygen molecules would be used to completely react with 230 grams of pentyl alcohol (C5H11OH)? Then, if exactly 1.505x10^21 carbon dioxide molecules were formed in this reaction, calculate the grams of water

*asked on November 24, 2017* -
## Chemistry

How many grams of dichloromethane are formed from 1500.0 grams of methane, it the percent yield for the reaction is 82.5%?

*asked on November 24, 2017* -
## Math

4 letters are typed, with repetition allowed. What is the probability that all 4 will be vowels? Write your answer as a percent. Round to the nearest hundredth of a percent as needed.

*asked on November 20, 2017* -
## Math

3 letters are typed, without repetition. What is the probability that all 3 will be vowels? Write your answer as a percent. Round your answer to three decimal places.

*asked on November 20, 2017* -
## Math

4 letters are typed, without repetition. What is the probability that all 4 will be vowels? Write your answer as a percent. Round your answer to three decimal places.

*asked on November 20, 2017* -
## Math

The height of a plant at the beginning of a month was 19 1/2 centimeters at the end of the same month the height of the plant was 22 3/8 centimeters. How many centimeters did the plant grow in a the nonth

*asked on September 17, 2017* -
## Physics

A rugby player passes the ball 6.78 m across the field, where it is caught at the same height as it left his hand. (Assume the player is facing the +x direction.) (a) At what angle (in degrees counterclockwise from the +x-axis) was the ball thrown if its

*asked on September 15, 2017* -
## Physics

An arrow is shot from a height of 1.4 m toward a cliff of height H. It is shot with a velocity of 26 m/s at an angle of 60° above the horizontal. It lands on the top edge of the cliff 3.4 s later. (a) What is the height of the cliff (in m)? (b) What is

*asked on September 15, 2017* -
## Math

The ratio of Jim's money to Peters money was 4:7 at first. After peter gave 3/14 of his money to jim, they have equal amounts of money. How much money did jim have at first?

*asked on August 28, 2017* -
## math

joe must choose a number between 49 and 95 that's is multiples of 3,6,7

*asked on July 4, 2017* -
## Physics

A football is kicked from the ground at an initial angle of 35.0° and an unknown initial speed. A 3.05 m tall goal post is 45.0 m away. With what minimum speed should it be kicked to hit the horizontal crossbar of the goal post?

*asked on June 28, 2017* -
## English writting

I dont understand what my professor wants me to write

*asked on June 20, 2017* -
## word problem

can anyone please show me how to set this up? This basketball season, Armando scored 8 less points than Austin, Damien scored twice as many points as Austin, and Brian scored 5 more than 5 times as many points as Austin. If all 4 players scored a total of

*asked on May 6, 2017* -
## chemistry

A student weighs out a 14.4 g sample of copper(II) bromide, transfers it to a 500 mL volumetric flask, adds enough water to dissolve it and then adds water to the 500 mL tic mark. What is the molarity of CuBr2 in the resulting solution The answer I keep

*asked on May 2, 2017* -
## Math

there are 680 coins divided into 3 piles. The second pile has three times as many coins as the first. The third pile has 50 more coins than the second pile. Solve This problem using a tape diagram.

*asked on April 29, 2017* -
## Math

This 3-dimensional shape has 6 faces that are triangles as well as one base that is a polygon. What is this shape?

*asked on April 29, 2017* -
## Precalculus

My teacher said this: "Please explain how you can tell if the multiplicity is odd or even. Then explain how you can tell if the multiplicity will be 1 or some odd number greater than 1." about some questions in my homework about graphing polynomials, can

*asked on April 20, 2017* -
## English

I'm struggling in identifying the antagonist in The Large Ant by Howard Fast. I can;t tell if it's the ant as a representation of the unknown or if it's the three men who act as the protagonist's conscience.

*asked on April 10, 2017* -
## calculus

Make a substitution to express the integrand as a rational function and then evaluate the integral. (Use C for the constant of integration.) 1/x{(x-1)^1/2} dx

*asked on April 6, 2017* -
## Math

Write an addition equation must have one two and a three digit addend and use all of these digits 662-228-8000

*asked on March 29, 2017* -
## math

The value of an investment A (in dollars) after t years is given by the function A(t) = A0ekt . If it takes 10 years for an investment of $1,000 to triple, how many years will it take for the investment to be $9,000? Simplify your answer completely. I am

*asked on March 10, 2017* -
## Psychology

How do parents influence a child's personality according to each theory: evolutionary, biological/genetic, and behavioral?

*asked on March 2, 2017* -
## English 8

Please check Adverb or Adjective phrase There would always be a perfect understanding between them. Adjective Phrase Her mother said "A person isn't real without a name" Adverb phrase She wins the Rsce, Morning Girl's mother had said a new sister would add

*asked on February 14, 2017* -
## English 8 Adjective phrase or adverb phrase

Some wore shiny rocks on their heads. I know on their heads is preposition but confused if it's adjective phrase because it describes rocks or adverb phrase because it answers where rocks were worn. She Wins the Race, Morning Girl's mother, had said a new

*asked on February 13, 2017* -
## chemistry

2CH3OH + 3O2-> 2CO2 + 4 H2O wHAT IS THE AMOUNT OF OXYGEN IS REQUIRED TO COMPLETRLY BURN 5 MOL OF METHANOL?

*asked on February 9, 2017* -
## electricity

What resistance must be connected in parallel to 60 ohms to reduce the combined resistance to 15 ohms?

*asked on February 6, 2017* -
## Geometry

What measurements (if any) are associated with each of the following ideas? a point; a line; a union of a square and its interior;and a union of a cube and its interior?

*asked on February 4, 2017* -
## Dance

Describe how would you execute a bend, wiggle, walk, and skip. Also when it comes to The three qualities of energy/movement collapse, explode, and swinging how would you find that in the enviroment. like what is an example of swiming, whats an example of

*asked on February 2, 2017* -
## Geography

According to biocological theory changes in the layers of environment such as ecosystem and macrosystem

*asked on February 1, 2017* -
## Math: Geometry

ok so i am really confused on my assignment. So What we are suppose to do is take pattern blocks (a triangle, square, hexagon, rhombus, trapazoid, and small rhombus) and see how many can go around a central point. I figured out that there are 6 possible

*asked on January 18, 2017* -
## Pre Calc - Probability

Let S = {2, 8, 14} be a sample space associated with an experiment. (a) List all events of this experiment. A) {2, 8}, {2, 14}, {8, 14}, {2, 8, 14} B) {2}, {8}, {14}, {2, 8}, {2, 14}, {8, 14} C) {2}, {8}, {14}, {2, 8}, {2, 14}, {8, 14}, {2, 8, D) 14} E)

*asked on January 11, 2017* -
## Math

In how many ways can a subcommittee of six be chosen from a Senate committee of four Democrats and six Republicans if (a) All members are eligible? (b) The subcommittee must consist of two Republicans and four Democrats?

*asked on January 10, 2017* -
## math

a shirt is on sale for d dollars the regular price is 4 times as much . Todd has enough money to buy 2 shirts at the regular price. How many shirts can todd buy at the sale price?

*asked on January 10, 2017* -
## pre calc

Formulate but do not solve the problem. Kelly Fisher invested a total of $20,000 in two municipal bonds that have yields of 8% and 9% interest per year, respectively. If the interest Kelly receives from the bonds in a year is $1680, how much did she invest

*asked on January 6, 2017* -
## pre calc

Formulate a system of equations for the situation below and solve. Michael Perez deposited a total of $3000 with two savings institutions. Bank A pays interest at the rate of 6%/year, whereas Bank B pays interest at the rate of 7%/year. If Michael earned a

*asked on January 6, 2017* -
## math

Determine whether the system of linear equations has one and only one solution, infinitely many solutions, or no solution. 5/4x − 2/3y = 8 1/4x + 5/3y = 7 Find the solution, if one exists.

*asked on January 5, 2017* -
## math

Determine whether the system of linear equations has one and only one solution, infinitely many solutions, or no solution. 3x − y = −3 6x − 2y = 8 a) one and only one solution b) infinitely many solutions c) no solution can you please show the work

*asked on January 5, 2017* -
## Calc 2 Urgent Surface Area of Revolution Question

Find the area of the surface generated when y=4x and x=1 is revolved about the y-axis. We have to use the surface area formula of revolution. Integral (2pi*f(x)sqrt(1+f'(x)^2))dx

*asked on December 14, 2016* -
## Calc 2 Urgent Surface Area

Find the area of the surface generated when y=4x and x=1 is revolved about the y-axis. We have to use the surface area formula.

*asked on December 14, 2016* -
## Calc 2

Find the area of the surface generated when y=4x and x=1 is revolved about the y-axis.

*asked on December 14, 2016* -
## Math

The statements p → q and q → r are given. If we know q is true, is p necessarily true? Explain.

*asked on December 12, 2016* -
## Math

The statements p â†’ q and q â†’ r are given. If we know q is true, is p necessarily true? Explain.?

*asked on December 12, 2016* -
## Math

1.Suppose we are given logic statements p, q, and r. a. If p → q and p → r, may we conclude that q → r? Answer yes or no and give a reason why. b. What is the converse of the following: not p → not q c. What is the contrapositive of r → q? d. The

*asked on December 11, 2016* -
## Math

1.a. 123five + 34five b. 1010two - 101two c. 23five * 34five c. What is the contrapositive of r â†’ q? d. The statements p â†’ q and q â†’ r are given. If we know q is true, is p necessarily true? Explain.

*asked on December 11, 2016* -
## Math

Let A and B be sets. Below are listed several statements involving set notation. For each case, write a statement in words that says what is written in symbols. a. A U B b. A ∩ B c. A ⊆ B d. a ∈ A e. A ∩ B = Ø

*asked on December 10, 2016* -
## Chemistry

I am using 85% ACS grade phosphoric acid. I need to make a 21% phosphoric acid solution with a total volume of 250ml. I have been told that 37ml of the 85% ACS grade phosphoric acid plus 188ml of Deionized water will create the 21% phosphoric acid solution

*asked on December 9, 2016* -
## Chemistry

A recipe calls for 5M of sucrose (C12H22O11) dissolved in 750mL of H2O. Please calculate the total mass (g) of sucrose needed. Show all work.

*asked on December 5, 2016* -
## Math

Ok so in class this is what our teacher had us do.... 1.Pick a number to represent the number of times you would like to have chocolate in a week (more than once, but less than 10 times). 2.Double this amount (just to be bold). 3.Add 5. 4.Multiply the

*asked on November 30, 2016* -
## Math

1.Pick a number to represent the number of times you would like to have chocolate in a week (more than once, but less than 10 times). 2.Double this amount (just to be bold). 3.Add 5. 4.Multiply the result by 50. 5.If you have already had your birthday this

*asked on November 29, 2016* -
## Math

Lisa went to the store and bought 100 pounds of fruit for $100.00. The peaches were $10.00 a pound, the melons were $3.50 per pound, and the apples were $.50 per pound. How many pounds of each did she buy

*asked on November 23, 2016* -
## algebra/pre-calc - please help

Lines can be used to approximate a wide variety of functions; often a function can be described using many lines. If a stock price goes from $10 to $12 from January 1st to January 31, and from $12 to $9 from February 1st to February 28th, is the price

*asked on November 19, 2016* -
## Algebra

Lines can be used to approximate a wide variety of functions; often a function can be described using many lines. If a stock price goes from $10 to $12 from January 1st to January 31, and from $12 to $9 from February 1st to February 28th, is the price

*asked on November 19, 2016* -
## algebra - please help

Give an example of a function, f(x), with a domain of (0,5] and a range of [0,∞). I've came up with the following. Is this right or do I need to change something? |(1/x) + ((1/x) - 5))|

*asked on November 16, 2016* -
## Algebra

Separate 51 into 2 parts so the second part is 3 more than twice as large as the first part

*asked on November 14, 2016* -
## Calc 1

The function C(m) = -.41m^2 + 6.7m - 44/ .7m represents Miles Traveled per lb. of CO 2 released as a function of speed(in MPH) for a hyundai Sontana. the domain of this function is [10,90]. A) calculate C'(m) B)find the critical points of C(m). C)Where

*asked on November 6, 2016* -
## Calc 1

A rectangle has one side on the x-axis, one side on the y-axis, one vertex at the orgin ans one on the curve y = e^-3x , for x>(equal) 0. find the maximum area (using calculus)

*asked on November 6, 2016* -
## Algebra

7squrare root of 9+5 (8-3) Please help me figure it out. Thanks

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

A force of -9000N is used to stop a 1500 kg car traveling at 20m/s. What braking distance is needed to bring the car to a halt?

*asked on October 24, 2016* -
## Algebra

I purchased a car for $20,000. At year 5 the car was worth $10,000. How much will it be worth at 7years?

*asked on October 20, 2016* -
## Chem 205

A solution of ammonia and water contains 3.50×1025 water molecules and 9.00×1024 ammonia molecules. How many total hydrogen atoms are in this solution? Any help would be appreciated, thank you!

*asked on September 11, 2016* -
## chemistry

From a laboratory process designed to separate water into hydrogen and oxygen gas, a student collected 10.2 g of hydrogen and 66.9 g of oxygen. How much water was originally involved in the process?

*asked on September 1, 2016* -
## Algebra

The larger of two numbers is 5 less than twice the smaller number. The sum of four times the larger and twice the smaller number is 100. If x is the smaller number, which equation below determines the correct value of x? A) 2(2x + 5) + 4x = 100 B) 2(2x –

*asked on August 5, 2016* -
## CHEMISTRY

THIS IS THE 3RD TIME POSTING THIS, PLEASE HELP ME ANSWER THIS THE HOMEWORK IS DUE TONIGHT. Write formulas for the compounds that form from In (Assume In charge is 3+.) and each of the following polyatomic ion: NO−3, SO2−4, PO3−4 -3, -4, -4 ARE THE

*asked on June 25, 2016* -
## CHEMISTRY

THIS IS THE 3RD TIME POSTING THIS. PLEASE HELP ME ANSWER THIS. THE HOMEWORK IS DUE TONIGHT. Write formulas for the compounds that form from Sr and each of the following polyatomic ion: NO−3, SO2−4, PO3−4. THE -3, -4, -4 ARE THE CHARGES, CANT TYPE

*asked on June 25, 2016* -
## CHEMISTRY

Write formulas for the compounds that form from Sr and each of the following polyatomic ion: NO−3, SO2−4, PO3−4. APPARENTLY SrNO6, SrSO4 , Sr3PO8 is wrong

*asked on June 24, 2016* -
## CHEMISTRY

Write formulas for the compounds that form from In and each of the following polyatomic ion: NO−3, SO2−4, PO3−4. (Assume In charge is 3+.) InNo9, InSO6, AND InP4 is wrong

*asked on June 24, 2016* -
## CHEMISTRY

Provide the name of the oxyanion of the acid HNO2(aq) I ENTERED Carbonate ion BUT ITS WRONG

*asked on June 24, 2016* -
## CHEMISTRY

Write formulas for the compounds that form from In and each of the following polyatomic ion: NO−3, SO2−4, PO3−4. (Assume In charge is 3+.) In(+3 charge) NO3(-1 CHARGE) SO4(-2 charge) P4(-3 charge) Re posting this a little differently. hopefully

*asked on June 24, 2016* -
## CHEMISTRY

Write formulas for the compounds that form from Sr and each of the following polyatomic ion: NO3 −1, SO4 −2, PO4 −3. SR (+3 CHARGE) NO3(-1 CHARGE) SO4(-2 CHARGE) PO4(-3 CHARGE) Re posting this question. hopefully someone can help me answer this now.

*asked on June 24, 2016* -
## CHEMISTRY

Write formulas for the compounds that form from In and each of the following polyatomic ion: NO−3, SO2−4, PO3−4. (Assume In charge is 3+.) InNo9, InSO6, AND InP4 is wrong

*asked on June 24, 2016* -
## CHEMISTRY

Write formulas for the compounds that form from Sr and each of the following polyatomic ion: NO−3, SO2−4, PO3−4. APPARENTLY SrNO6, SrSO4 , Sr3PO8 is wrong

*asked on June 24, 2016* -
## math

What kind of triangle is (0,0) (4,O) (0,4)

*asked on May 19, 2016* -
## geography

what are the results/effects of poor service delivery socially,environmental and economic problems?

*asked on May 1, 2016* -
## Physics

You are enjoying the frictionless frozen surface of the Rideau canal with your friend. While together, you try a physics experiment in which you push off of each other at the same time. If your acceleration is 2 m/s 2, what is your friend’s acceleration,

*asked on April 21, 2016* -
## Physics

You and your friend are pulling a 2.5 kg sled across a slightly rough patch on the frozen Rideau canal, such that there is a friction force of 1.5 N opposing the direction of motion. Assume that you each pull the sled forward from either side with the same

*asked on April 21, 2016* -
## Physics

A box is sent up a frictionless inclined (34.2 degrees) plane at an initial speed 3.9 m/s. (a) How much time, in seconds, does it take for the box to stop? (b) How far did the box travel up the plane before it came to a stop?

*asked on April 21, 2016* -
## Physics

While in an elevator, you decide to take some weight readings of yourself to determine the elevator’s acceleration. When the elevator is stopped, you read a weight of 59.2 kg. When the elevator is moving, you measure a maximum weight of 63.5 kg, and a

*asked on April 21, 2016* -
## Physics

An egg is thrown from the top edge of a 22.9 m high building down onto an unsuspecting person standing on the ground 6.2 m from the base of the building. If the egg is tossed horizontally, at what speed, in m/s, must the egg be thrown such that it lands on

*asked on April 21, 2016* -
## algebra

A flagpole has a height of 6565 yards. It will be supported by three cables, each of which is attached to the flagpole at a point 55 yards below the top of the pole and attached to the ground at a point that is 3232 yards from the base of the pole. Find

*asked on April 10, 2016* -
## Math

Four angles are put together, forming a straight angle. Two of the angles are the same size. The other two angles are also the same size but different from the other two. If one angle of the four angles is 40 degrees, what are the measures of the other

*asked on March 23, 2016* -
## Calculus - Rates of Change

A water tank has a shape of an inverted cone with a base radius of 2m and a height of 4 m. If water is being pumped into the tank at a rate of 2m3/min, then find the rate at which the water level is rising when the water is 3m deep. Attempted solution: V=

*asked on March 8, 2016* -
## Science

You are walking on a moving sidewalk (moving at a speed of 2 mph).if you are walking in the same direction as the sidewalk at a speed of 4 mph what is your velocity relative to the ground what would be your velocity if you were walking in the opposite

*asked on March 3, 2016* -
## Math

You estimate that a puppy weighs 12 pounds. The actual weight of the puppy is 14 pounds. Find the percent error. Round your answer to the nearest hundredth of a percent. Help me Im stuck..!

*asked on February 29, 2016* -
## life orientation

How should i advise a friend who reponds to conflict by avoidance on why it is not healthy in sustaining positive relationships?

*asked on February 25, 2016* -
## Marketing

Please need help with this question. Visit these sites and think about the role that they play in the new breed of channel intermediaries. United Parcel Service Roadway Express

*asked on February 23, 2016* -
## geometry

One leg of an isosceles right triangle measures 5 inches. Rounded to the nearest tenth, what is the approximate length of the hypotenuse?

*asked on February 20, 2016* -
## Maths

The triangle is called ABC. Angle B has an angle of 90 degrees. The length of AB is 15mm and the length of BC is 16mm. Find the length of AC

*asked on February 17, 2016* -
## english

Punctuation for The student asked will my learning pattern scores change over my lifetime

*asked on February 2, 2016* -
## geography

What are three characteristics that mid-latitude cyclones have in common with all cyclones?

*asked on January 23, 2016* -
## Chem - pH curve

Sketch what the pH curve for soil containing carbonate ion that undergoes continual addition of hydronium ions from acid deposition. Include relevant chemical equations and information that explain the aspects of the ph curve you sketch. Please help!!

*asked on January 14, 2016* -
## Algrebra

Given that a(x+7)=24, which expression is equivalent to x? A. 24/a-7 B.24-7/a C. 24/a -7 D. 24-7/a

*asked on January 5, 2016* -
## Math

If 36 in. = 1 yd, then 2 1/3 yd =

*asked on December 9, 2015*