# Alisha

Popular questions and responses by Alisha-
## Maths

What does index notation mean? pls help thnx xxx

*asked on August 9, 2019* -
## chemistry

H2So4+NH4OH Find the complete ionic equation Find the spectator ions Find the net ionic equation I feel like my answer is wrong i tried CIE: 2H+(aq)+So42-(aq)+2H4+(aq)---> 2NH4+(aq)+So42-(aq)+H2o (l)

*asked on February 24, 2015* -
## Math

You are given 9 to 1 odds against rolling a sum of 8 with the roll of two fair dice, meaning you win $9 if you succeed and you lose $1 if you fail. Find the expected value (to you) of the game.

*asked on September 30, 2012* -
## Chemistry

How do you write the chemical equation of the dissociation of nicotinic acid, C5H4NCOOH, in water?

*asked on January 13, 2013* -
## Math

The common ratio of a geometric progression is 1/2 , the fifth term is 1/80 , and the sum of all of its terms is 127/320 . Find the number of terms in the progression.

*asked on January 27, 2020* -
## Algebra

A gardener is making a planting in the shape of a trapezoid. It will have 41 plants in the front row, 37 in the second row, 33 in the third row, and so on. If the pattern is consistent, how many plants will there be in the last row? How many

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

A coil is wrapped with 200 turns of wire on the perimeter of a square frame of sides 20.5 cm. Each turn has the same area, equal to that of the frame, and the total resistance of the coil is 2.01 Ω. A uniform magnetic field is turned on perpendicular to

*asked on October 23, 2014* -
## Chemistry

11.4mL of 0.7 M NaOH was used to titrate 5.0mL hydrochloric acid. What is the molarity of the acid? a) 0.3 b) 1.6 c) 3.9 d) 5.0 e) 8.1 Can someone answer this question and explain how to get the answer?

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

A hot-dog stand owner makes a profit of $100 when he sells 90 hot dogs a day. He has a loss of $30 when he sells 25 hot dogs a day. Write a linear equation that represents his profit? No idea what I am supposed to do.

*asked on June 17, 2017* -
## HISTORY PLEASE HELP!!!!!!!!!!

*** = my answer choice. 1. Which of the following best describes the Klu Klux Klan during Reconstruction? A. a gun club for former Confederate Soldiers. B. a secret political terrorist organization. C. a social group whose members masqueraded in sheets and

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

A man walking on a road at 3km/hr encounters rain falling vertically at 18km/hr. At what angle should he hold the umbrella to protect himself from rain?

*asked on October 27, 2016* -
## Chem

Suppose you have Avogadro\'s number of mini marshmallows and use them to cover the state of California which has a land area of 1.560 × 105 mi2. Each mini marshmallow has a diameter of 0.635 cm and a height of 2.54 cm. Assuming the marshmallows are packed

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

Whom should you see at the bank if you need to borrow money?

*asked on April 13, 2011* -
## Calculus

Please simplify the expression: 2log(base 4)9 - log(base 2)3

*asked on July 8, 2015* -
## Chemistry

What volume (in liters) is occupied by 3.85×10^22 nitrogen molecules at 105 C and 255 mmHg?

*asked on July 27, 2012* -
## Statistics

A comparison is made between two bus lines to determine if arrival times of their regular buses from Denver to Durango are off schedule by the same amount of time. For 51 randomly selected runs, bus line A was observed to be off schedule by an average time

*asked on July 11, 2012* -
## Science

The Millennium Force is the highest roller coaster in North America. It reached a maximum height to 94.5 m. The total mass of the roller coaster car and its passengers is 1380 kg. The speed of the roller coaster is 41.1 m/s at its lowest point on the

*asked on June 1, 2017* -
## Chemistry Help!

Anthracene which contains only Carbon and hydrogen, is an important source of dyes. When 250 mg of anthracene is burned in pure oxygen, 8.64 mg of CO2 and 1.26 mg of H2O are formed. What is the empirical formula of anthracene?

*asked on October 4, 2012* -
## trig

Mr. Saurik proposed that the function h(t) = 6sin(3pi(t) - pi/3) + 5, where h(t) is in meters and t is in seconds, models the height above the ground of a point on a spinning wheel. Is Mr. Saurik's equation plausible? Explain.

*asked on December 3, 2011* -
## Science

1) A piece of paraffin wax has a density of 9g/cm3, mass of 900g, and a volume of 100cm3. If the wax was melted to the liquid state, approximately what would it's volume be? Would this wax float or sink in water? Explain. 2) A tin box ( Mass of 80g, Volume

*asked on March 8, 2011* -
## science

why does mold grow faster in warmer temperature

*asked on February 22, 2010* -
## religon

Who was the faters of the following isaac and Ishmael cain and able jehoshaphat nimrod absalom and soloman samuel lot esau and jacob joseph and his bothers david simeon peter ephriam and manasseh racheal and leah moab samson joshua jesse johnathan rehoboam

*asked on June 13, 2009* -
## chemistry(water molecules)

What does a water molecule look like (the shape)and what atoms does it contain? Also why are water molecules polar molecules? A water molecule contains two hydrogens and one oxygen between them. However, the 3 atoms are not in a straight line - the

*asked on January 4, 2007* -
## English

I like Jorge Luis Borges' essay 'The Wall and the Books,' but I like his book Collected Fictions better. Which word or phrase in the sentence needs to be in italics? A. I like Jorge Luis Borges' B. Collected Fictions C. 'The Wall and the Books' D. but I

*asked on April 17, 2019* -
## English

Did you see that car accident?! Is the punctuation correct?

*asked on December 21, 2018* -
## Math

Regular quadrilateral prism has an altitude h = 11 cm and base edges b=8 cm. Find the sum of all edges.

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

A river flows from south to north at 5km/hr. On this river a boat is heading east to west perpendicular to the current at 7km/hr. As viewed by an eagle hovering at rest over the shore, how fast and in what direction is the boat travelling?

*asked on October 27, 2016* -
## physics

An 800 kg police boat slows down uniformly from 50 km/h [E] to 20 km/h [E] as it enters a harbour. If the boat slows down over a 30 m distance, what is the force of friction on the boat? (Hint: You will need to convert the velocities into m/s.)

*asked on July 15, 2014* -
## business

Imagine this team is in a room together brainstorming and working on a team project. Using your experience and what you've learned this week, suggest a design for a room that would facilitate team interaction. In the team discussion area, respond to the

*asked on November 12, 2013* -
## Chemistry

I need to write the equation for the neutralization reaction of NaOH and nicotinic acid (C5H4NCOOH). Here is my attempt: C5H4NCOOH + NaOH → C5H4NCOONa + H2O First of all, is the formula for nicotinic acid correct? I am finding mixed answers when I search

*asked on January 13, 2013* -
## French 2

Ma Jupe est trop longue (pantalon)

*asked on October 21, 2012* -
## chemistry

How many grams of Al will react with 3.00 mol of 0(2)?

*asked on September 26, 2010* -
## chemistry

What is the ph of a 0.00100 M HCl solution?

*asked on June 21, 2010* -
## Science

I want a catchy prahse for my topic- experiment"Can water be split into hydrogen and oxygen?"

*asked on June 15, 2010* -
## Sci

I want a catchy prahse for my topic experiment"Can water be splitted into hydrogen and oxygen?"

*asked on June 14, 2010* -
## chemistry

write the reaction for the dehydration of CuSO4 . XH20?

*asked on June 14, 2010* -
## Sci

Whats My hypothesis for "Can Water Be Split Into Hydrogen and Oxygen?"

*asked on June 13, 2010* -
## phyics

convert 36cm/min to km/h

*asked on April 6, 2010* -
## 6th grade

Use an integer to represent each situation. earned $100 800 ft gain in elevation 12 below 0 c 4 above 0 F a debt of $25 lost 5 pounds

*asked on April 29, 2009* -
## science

what is a major difference between the Protist kingdom and the Animal kingdom? PLEASE HELP ME!!!!!

*asked on October 13, 2008* -
## CHEMISTRY QUESTION

Imagine you have a light bulb and battery conductivity tester. You are given a dilute solution of copper sulfate and a dilute solution of vinegar, acetic acid. Coppersulfate is an ionic compound. You may recall acetic acid reacts with water to produce ions

*asked on January 9, 2007* -
## math

the 90 members of a sports club play at least one of the games tennis, football, volleyball. 10 play tennis and football, 19 play football and volleyball and 29 play tennis and volleyball.n people play all three games. 2n people each play only one game,

*asked on April 25, 2020* -
## Physics

A force of 40N is applied at the end of a wire 4m long and produces an extension of 0.24mm.If the diameter of the wire is 2.00mm, calculate the

*asked on February 28, 2020* -
## Math

Three numbers X, Y, and Z are in the ratio 2:7:8. If 12 is subtracted from Y, then three numbers form a geometric sequence (in the order X, Y–12, Z). Find X, Y, and Z. There are two sets of answers I already found one set i am unsure how to find the

*asked on January 20, 2020* -
## Math

Find the first three terms of an arithmetic series in which the fifteenth term is –7 and the sum of the first fifteen terms is 210

*asked on January 20, 2020* -
## Maths

Reduce 1140 by 10% How do I do this, Please help Thanks xx

*asked on August 5, 2019* -
## quadratics

Write the function f(x) = ax^2 + bx + c in completed square form. SHOW YOUR WORK!!!

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

Why is trade necessary?

*asked on February 19, 2019* -
## Math

Find acute angle when m=-2/3

*asked on November 11, 2018* -
## Science

How does one read a cladogram?

*asked on December 8, 2017* -
## English

I’m at the tourist centre in Boston the speakers tone can best be described as

*asked on September 29, 2017* -
## algebra

Hi, I needed help in simplifying the following in steps please: a/a+a^2 keeping in mind that a is over a + a^2, not separate. Thank you.

*asked on July 4, 2017* -
## math urgent help

If F (x)= 2x^2-5x-3 Determine f (-4) F (-4)=2 (-4)^2-5 (-4)-3 (I'm confused like do I use bedmas to solve this? ) F (-4)= 16-(-20)-3 F (-4)=36-3 F (-4)=33 Is that right?

*asked on June 19, 2017* -
## math

Solve the system:4x+2y-13=0 and 3x=5y+26 by elimination. 3 (4x+2y-13=0) 12x+6y-26=0 4 (3x=5y+26) 12x=20y+104 I need to subtract since the signs are the same: 12x+6y-26=0 Since they don't match up, I'm having trouble subtracting them. I'm not sure what to

*asked on June 3, 2017* -
## Math

Peter has 12 baseball cards he traded 1/3 of his cards with his cousin and 1/4 of his cards to tyrell how many cards did he keep

*asked on May 9, 2017* -
## Algebra 2

If y=3 is a horizontal asymptote of a rational function, which must be true? lim x→ 3 f(x) = 0 lim x→ 0 f(x) = 3 **my answer lim x→ ∞ f(x) = 3 lim x→ 3 f(x) = ∞

*asked on May 9, 2017* -
## Math

The perimeter of the base of the regular quadrilateral pyramid is P = 30 cm. Find the sum of all edges of this pyramid, if the perimeter of a lateral face is 27.5 cm

*asked on April 25, 2017* -
## Math

What is the volume of the right prism with height h=14 cm, if the base of the prism is a triangle ∆ABC with side AB = 9 cm and altitude to that side h= 6 cm.

*asked on April 17, 2017* -
## Algebra

Find the sum: 8 over sigma symbol, k=1 below the symbol and (-1)^k+1,5k to the right of it. Sorry the format is off, but I didnt know how else to type it in. Thank you.

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

You toss a ball from your window 8m above the groun. When the ball leaves your hand, ut is moving at 10m/s at an angle of 20 degree below the horizontal. How far horizontally from your window will the ball hit the ground? Ignore air resistance. Plz answer

*asked on October 27, 2016* -
## Chem

Assuming 100% dissociation, calculate the freezing point and boiling point of 2.45 m Na2SO4(aq). Constants may be found here sites. google. com/site/chempendix/colligative.

*asked on October 19, 2016* -
## Chem

A hypothetical molecule, X–Y, has a dipole moment of 1.76 D and a bond length of 151 pm. Calculate the percent ionic character of this molecule.

*asked on September 29, 2016* -
## MATH

ABCD is a rectangle and line DX and DY and XY are drawn where X is on AB and Y is on BC.the area of the triangle BXY is 4 ,area of triangle AXD is 5 and area of triangle CYD is 3.determine the area of the triangle DXY.

*asked on August 12, 2016* -
## math ratios

mark is growing tomatoes in his greenhouse and needs to fill them with fertiliser. The ratio of concentrated fertiliser to water is 1:6. If mark needs 21 litres of diluted fertiliser, how much concentrated fertiliser and water will he need?

*asked on July 15, 2016* -
## la

How are the characters Jack and Algernon developed through the use of dialogue? How are these characters similar? How are they different? Support your answer with evidence.

*asked on May 26, 2016* -
## Chemistry

aluminum hydroxide is decomposed to form aluminum oxide and water. if 2.23 moles of water are formed then how many of aluminum oxide are formed. how many grams of aluminum hydroxide must have been.decomposed?

*asked on May 25, 2016* -
## Math

If log 20=P, express log 16 in terms of P. I actually don't want an answer. Is there possibly a hint I can get about an approach to the question? I thought it might have to do something with the common factors of 16 and 20, but I'm not sure.

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

What should i do to improve my writing? give me suggestion please.

*asked on February 19, 2016* -
## Microeconomics

Give Three Examples of how savings can be channeled into productive investment?

*asked on December 3, 2015* -
## Algebra

he larger of two numbers is eight more than five times the smaller number. The sum of the two numbers is 74

*asked on October 20, 2015* -
## Calculus

Find all solutions of the equation correct to three decimal places. (ex: 0.617 or -1.764) x^3=3x-3

*asked on September 24, 2015* -
## Calculus

Which of the following is not a solution to the following equation? x^3-5x^2+4 = 0 x = 0 x = 4.83 x = -0.83 x = 1

*asked on September 24, 2015* -
## Calculus

Please help simplify this expression: 2 log (base 4) ^9 - log (base 2) ^3 The answer should be log(base 2) ^3

*asked on August 4, 2015* -
## math

you decide to dye your hair in various colors. If you die 1/3 of it blue , 1/4 pink and 1/4 of it black how much of your original hair is left?

*asked on June 1, 2015* -
## Math

you have 1/2 of a brownie. You eat 3/4 of what you have , what fraction of the brownie did you eat?

*asked on May 31, 2015* -
## Statistics

What is the lowest z-value for the highest 2% of observations on the standard normal distribution?

*asked on April 22, 2015* -
## math (urgent)

A basketball or some stadium holds 20000 people. On average 140000 come to see the match. Average ticket price is $75. market research shows that if ticket price is decreased by $5 800 more people buy tickets. Find the price that will maximize revenue and

*asked on April 1, 2015* -
## Math

A television company agrees to establish a community antenna in a new suburb at a charge of $5 each for 1000 subscribers or less.To encourage more subscribers,it is agreed to give a discount of $ 0.10 to each subscriber for every additional 10 subscribers

*asked on April 1, 2015* -
## chemistry

H2So4+NH4OH Find the complete ionic equation Find the spectator ions Find the net ionic equation I feel like my answer is wrong i tried CIE: 2H+(aq)+So42-(aq)+2H4+(aq)---> 2NH4+(aq)+So42-(aq)+H2o (l)

*asked on February 24, 2015* -
## maths

The area of a rectangular field is 96m2. The length of one side is 12m. The farmer needs to know the perimeter to find out how much fencing will be?

*asked on December 1, 2014* -
## MATHS

Each Sunday the hymns to be sung are displayed on a hymn-board using numbered cards. The cards have the digits 0 to 9 on them. The hymn book has 750 hymns in it. Three different hymns are sung each service. a) What is the smallest number of cards the

*asked on November 1, 2014* -
## Physics

An electron in an electron beam experiences a downward force of 2.0 x 10^-14 N while traveling in a magnetic field of 8.8 x 10 ^-2 T west. The charge on a proton is 1.60×10^−19. a) What is the magnitude of the velocity? Answer in units of m/s

*asked on October 16, 2014* -
## Physics

A solenoid 74.5 cm long has 350 turns and a radius of 2.26 cm. If it carries a current of 1.69 A, find the magnetic field along the axis at its center. Answer in units of T

*asked on October 16, 2014* -
## physics

In 10 seconds a car accelerates 3m/s^2 to 90m/s. How fast was the car going before it accelerated?

*asked on September 29, 2014* -
## hca311

In general, what is the main difference in opinion of the House and the Senate? Whose viewpoint do you agree with? How do these viewpoints impact financial challenges facing health care leaders?

*asked on September 18, 2014* -
## english 125

Support your views with at least one example of a dramatic text and one example of a poem

*asked on August 14, 2013* -
## General Math

I am so confused can anyone help me understand which one is correct and why.... Beta is estimated as the slope of a regression line fit to pairs of periodic returns, (rx, ry), where: rx is the return for a market index such as the S&P 500 Index. rx is the

*asked on July 21, 2013* -
## URGENT Chemistry Question!

This might be a silly question, but... Is 6-8 on the pH scale considered neutral? If so, 6.23 pH is neutral and 8.78 should be considered basic. Is this correct?

*asked on January 14, 2013* -
## math

An empty bucket is put under two faucets. If one faucet is turned on alone the bucket fills in 6 minutes. If the other faucet is turned on alone the bucket fills in 4 minutes. If both are turned how many seconds will it take to fill the bucket?

*asked on January 7, 2013* -
## Coordination Chemistry

A particular metal ion octahedral complex has the same number of unpaired electrons (non-zero) whether the complex uses weak or strong field ligands. List several fourth period transition metal ions that could have this behavior. Also, if someone could

*asked on December 1, 2012* -
## Algebra

An investor invested a total of 2900 in two mutual funds. One fund earned a 9% profit the other earned a 5% profit. If the investors total profit was $217 how much was invested in each mutual fund.

*asked on November 4, 2012* -
## Algebra

An investor invested a total of 2900 in two mutual funds. One fund earned a 9% profit the other earned a 5% profit. If the investors total profit was $217 how much was invested in each mutual fund.

*asked on November 4, 2012* -
## Chemistry! Test tomorrow, pls help !

we're given the equation: C6H6(l)+Br2(l) --> C6H5Br(l)+HBr(g) you need to prepare 50.0g pf bromobenzene and you expect no more than a 75% yield. How much benzene should you begin with if the yield is 75%. i know that % yield = (actual/theoretical) * 100 %

*asked on October 4, 2012* -
## Chemistry

The combustion of benzoic acid releases 26.38kJ/g and is often used to calibrate a bomb calorimeter. the combustion of 1.045 g of benzoic acid caused the temperature of the calorimeter to rise by 5.985C. Useing the same calorimeter, a sample of 0.876g of

*asked on October 4, 2012* -
## Gloabl History

What were the cause of the Korean War?

*asked on February 8, 2012* -
## Math

From the top of a cliff 120 m above the water, the angle of depression of a boat on the water is 18 degrees. How far is the boat from the cliff?

*asked on December 8, 2011* -
## math- factoring

factor completely 1) 8x^3 + 27y^3 2) u^3 + 125v^3

*asked on November 28, 2011* -
## math

the radius of a nickel is 1centermeter. if 10 nickles are placed in a row, how long will the row be?

*asked on September 28, 2011* -
## physics please help

Three point charges, 5.6E-6, 2.2E-6, and -3.0E-6, lie along the x-axis at 0.00 m, 0.031 m, and 0.059 m. What is the force exerted on q1 by the other two charges? What is the force exerted on q2 by the other forces? And what is the force exerted on q3 by

*asked on March 22, 2011* -
## Science

Officials have found certain amounts of hazardous Fe3+ ions in the town of Scienceville's water supply. Using your knowledge of chemical reactions, suggest a way to eliminate this ion from Sciencevills's drinking water supply. Provide a thorough

*asked on February 27, 2011*