# Solve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this. 2x + 10y = 58 -14x + 8y = 140

91,718 questions, page 716-
## Chemistry

In the equilibrium system CH3COOH(aq) + H2O(l) —> — H3O+ CH3COO-(aq) .

*asked by L on January 21, 2018* -
## lisa

This is a question given to me to answer:How is dividing a polynomial by a binomial similar to or different from the long division you learned in elementary school? Can understanding how to do one kind of division help you with understanding the other

*asked by Math on January 21, 2010* -
## English

I urgently need you to chech the question and the answer to it. I considered your corrections. 1) Explain the meaning of the word compromise applied to the Victorian way of life. (Explain how the word compromise applied to the Victorian way of life). Then

*asked by Henry2 on June 26, 2011* -
## English/Psychology

1. What is a Positive Change as being a successful student in college? How will you know if a student is SUCCESSFUL (doing positive things)? Positive Change for becoming a successful student in college involves getting a clear picture about the harmful

*asked by yolanda on January 2, 2011* -
## geography

The russian revolution in 1917 established: A)the eastern orthodox chruch as the center of power in russia. B)the czar as the holder of power as long as he agreed to be a communist C)a representative government but the revolution continued. D)peter the

*asked by henry on September 2, 2009* -
## Chemistry

In the reaction between H2O2 and I-, 15 mL of 0.30M KI, 65. mL of 0.10M H2O2 and 19 mL of 0.020M Na2S2O3 were mixed in a flask containing starch and buffer and the total volume was made up to 500mL with distilled water. The solution turned blue (indicating

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

Which of the following best summarizes the function of the respiratory system? A. to transport oxygen to cells and wastes away from cells. B. to protect the organs in the chest cavity C. to move oxygen from the air into the body and carbon dioxide from the

*asked by Anonymous on February 2, 2014* -
## Science

Which of the following best summarizes the function of the respiratory system? A. to transport oxygen to cells and wastes away from cells. B. to protect the organs in the chest cavity C. to move oxygen from the air into the body and carbon dioxide from the

*asked by Anonymous on February 2, 2014* -
## geography

Can you check my answers please? 1. What continents touch the 60 degrees W line of longitude? North America and South America, Antarctica 2. What do green areas on physical maps usually mean? It usually means land or low-lying land areas. 3. What is the

*asked by Reed on December 3, 2012* -
## physics

Suppose that a spring is attached to a wall. On the other end of the spring, it is attached to an object of 0.263kg. When the spring is compressed at a distance of 15cm, it holds an elastic potential energy of 20.0J. The horizontal surface has no friction;

*asked by Adam on August 1, 2017* -
## Please Proofread Any Suggestions Will Help

Every morning, I drive to work; as I get closer I can hear the cadence calling of all the basic training units on Fort Benning, Georgia. Regardless of what is on the training schedule for the rest of the day, we conduct Army Physical Readiness Training

*asked by NICK Exemplification Essy on April 22, 2012* -
## math

Samuel Morse developed a character coding system that was used to send messages along telegraph lines and also for light signalling between ships. Morse code is based on a series of dots and dashes (short of long bursts). The most frequently used letter,

*asked by CL on April 7, 2010* -
## Physics

If you do work on an object in 1/3 the usual time, your power output is ____ times the usual power output

*asked by Amber on March 2, 2011* -
## Math

If a mixture requires 2 parts water to 3 parts of alcohol what percentage of mixture is water. How do I work this problem?

*asked by Timmy on February 1, 2010* -
## ALGEBRA

How can I find tHe equivalent expression of -(92u+86x-44). I thought about changing the whole expression but it did not work ex: -92u-86x+44

*asked by Learner on December 10, 2009* -
## physics

A rock climber climbs a 15 m vertical rock wall while wearing a 5.3 kg backpack. How much work does the climber do on the backpack?

*asked by Anonymous on October 24, 2011* -
## math

(W=7h+180) liz what is her wage for that week? in a different week liz has a wage of $239.50. How many extra hours does she work

*asked by fahima on February 11, 2014* -
## physics

A rock climber climbs a 15 m vertical rock wall while wearing a 5.3 kg backpack. How much work does the climber do on the backpack?

*asked by Anonymous on October 24, 2011* -
## Math

Consider the following where s is in feet and t is in seconds. s(t) = t^3 + 4t^2 + 6t + 4 (a) Find v(t). v(t) = (b) Find a(t). a(t) = (c) Find v(3). (d) Find a(3). v(t) is the first derivative of s(t). a(t) is the second derivative of s(t). I will be happy

*asked by India on February 20, 2007* -
## trig

how do you work find sin (a-B)beta sign. sin a = 12/13,a lies in quadrant II,and cos B = 15/17, B lies in quadrant I.

*asked by Kenneth on January 8, 2012* -
## Science

A boy lift a box that weighed 40 newtons if the boy was 1.5 meter tall how much work did he do as he lift the box?

*asked by Daniel on June 1, 2012* -
## MATH

LAST YEAR BOB'S AGE WAS A SQUARE NUMBER AND NEXT YEAR IT WILL BE A CUBE NUMBER. HOW OLD IS BOB NOW ? PLEASE EXPLAIN HOW YOU WORK IT OUT ,THANKS

*asked by wan on November 14, 2012* -
## pysics

;A 20-N block lifted straight upward by a hand applying a force of 20 N. If the block is lifted 1 m, who much work does the hand do?

*asked by ang on February 9, 2016* -
## physics....plzzz help

To move a charge of +180 nC from a position where the electric potential difference is +24 V to another position where the potential difference is +8 V, how much work must be done?

*asked by myra on May 15, 2012* -
## Physics

Find the center of mass of two objects, one of mass M and one of mass m, separated by distance L? At R1 = L * (1 - m/(m+M)) from m and R2 = m * L/(m+M) from M At R1 = L^2 x (1 - m/(m+M)) from m and R2 = m * L^2/(m+M) from M At R1 = m * L/(m+M) from m and

*asked by Shantal on January 30, 2016* -
## Math

what is $10.5002 rounded to the nearest cent, dime, and dollar. My work: cent: $10.50 dime: $10.50 dollar: $2:00 Did I do good?

*asked by george on April 27, 2012* -
## chemistry

A solution of a substance was spotted at a distance 0.5cm from the base of a 20cm long chromatographic plate.Upon elution,the solvent front got to a place 0.5cm from the top of the plate.If the component moves half way up the 20cm plate,calculate its

*asked by Sirneij on April 13, 2015* -
## Intermediate Algebra

A school designer wants to create a whiteboard with the optional dimensions to enhance learning. It is determinedd that if one side of the whiteboard is x+2y inches theother side should be x^2+6xy-5y^2 inches. Write an algebraic expression for the area of

*asked by ladybug on June 8, 2012* -
## chemistry

The standard solution of FeSCN2+ (prepared by combining 9.00 mL of 0.200 M Fe(NO3)3 w/1.00 mL of 0.0020 M KSCN) has an absorbance of 0.520. If a trial's absorbance is measured to be 0.275 and its initial concentration of SCN– was 0.00060 M, the

*asked by david on April 14, 2008* -
## chemistry

problem 2. a sample of calcium chloride weighs 1.64g. it is dissolved in water and silver nitrate solution added.a precipitate of silver chloride weighing 4.24g was formed.determine the percentage composition of each element. the simple formular of calcium

*asked by yankoua on October 28, 2009* -
## Chemistry

what is the Molecular equation for the preparation of tetra-aminocopper(II)sulfate hydrate - Cu(NH3)4SO4*H20 in the experiment CuSO4*5H20 was added to water and then ammonia solution was added to that. and then after that was all stirred up nicely 95%

*asked by chris on March 16, 2011* -
## chemistry

1.25 grams of an acidnis completely neutralised by 25ml of a 0.25M Ba(OH)2 SOLUTION.which of the following statements are correct. a)if the acid is dibasic its molar mass would be 200 b)if it is dibasic /0.5g of the acid would neutralise completely 12.5ml

*asked by akshita on September 27, 2017* -
## Chemistry

A beaker contains a solution that is 0.50 M in Au+3 ion and 0.25 M in Ag+ ion. A soultion of sodium chloride is slowly dripped into the beaker with stirring. Which ion will precipitate first, the gold or the silver? Clearly support your answer and write

*asked by Kelly on November 19, 2014* -
## math Steve helps me

1.64g of a mixture of cac03 and mgc03 was dissolved in 50ml of 0.8 m Hcl. The excess of acid required 16ml of 0.25< NAOH for neutralization. Calculate the percentage of cac03 and mgc03 in the sample The right answer mgc03 52.02% and caco 47.98% You need to

*asked by Fai on December 25, 2013* -
## physics

Suppose a spherical planet P has a uniform density of 4.96*10^3 kg/m^3 and a radius R=1904 km. For a parcel that weighs 73 N on the surface of the (spherical) earth, what is A) gp/ge and B) its weight on the surface of P? Using the "tunnel mail" system

*asked by Mudoh on April 11, 2011* -
## CHEMISTRY

In a coffee cup calorimeter 70.0 mL of 0.100 M AgNO3 and 70.0 mL of 0.100 M HCl are mixed to yield the following reaction. Ag+(aq) + Cl ‾(aq) → AgCl(s) If the two solutions are initially at 22.60°C, and if the final temperature is 23.39°C, calculate

*asked by Sarah on April 30, 2012* -
## Physics

Two small stereo speakers A and B that are 1.4 m apart are sending out sound of wavelength 34 cm in all directions and all in phase. A person at point P starts out equidistant from both speakers and walks so that he is always 1.5 m from speaker B. For what

*asked by J on April 21, 2008* -
## analytical chemistry

a 0.4617g sample containing sodium bicarbonate was dissolved and titrated with standard 0.106M of hydrochloric acid solution , requiring 40.72ml. the reaction is: HCO3- + H+ -> H2O + CO2 Calculate the percent sodium bicarbonate in the sample. (Given

*asked by zzz on June 16, 2015* -
## english/vocabulary

Look back at "failing infrastructure" write a letter to your state representative describing an infrastructure problem in your community and urging swift action. thoroughly describe the problem and it's solution, explaining why it is vital to take action

*asked by alex on April 15, 2014* -
## Chemistry

Can someone please help me with this question? Hydrazine is somewhat toxic. Use the half-reactions shown be- low to explain why household bleach (a highly alkaline solution of sodium hypochlorite) should not be mixed with household ammonia or glass

*asked by Anonymous on June 7, 2015* -
## Chemistry

A compound of carbon, hydrogen, and oxygen was burned in oxygen, and 2.00g of the compound produced 2.868 g CO2 and 1.567 g H2O. In another experiment, 0.1107 g of the compound was dissolved in 25.0 g of water. This solution had a freezing point of -0.0894

*asked by Desz on August 6, 2013* -
## Chemistry

Hi can someone please help with this question, or atlest direct me in the right direction. Please and thank you. The initial rate of reaction H2O2(aq) --> H2O (l) + 1/2 O2(g) is found to be1.7*10^-3 M/s . Assume that this rate holds for 2 minutes. Start

*asked by Melanie on November 20, 2008* -
## chemistry-Buffer Q

You have a solution of .5 L of 1.74g of NH3 and 4.15g of (NH4)2SO4. How many ml of 14M HCl is required for a pH of 9.00? I don't know how to go finish this one. I thought about figuring the concentrations of each (NH3, NH4), making an ice table and solving

*asked by matt on November 14, 2011* -
## chemistry

pure water has a hydrogen ion concentration of 1 x 10-7 m and a ph of 7. a student measures a basic solution and finds that it has a hydrogen ion (H+) concentration of 1 x 10-3. explain why the student must have an error in her statement

*asked by didisilver on April 29, 2014* -
## Algebra

Use the formula pH = −log[H^+] 9.. The hydrogen ion concentration of a substance is 4.3*10^-6 × moles per liter.Find the pH. Round to the nearest tenth. 10. Find the hydrogen ion concentration of a solution whose pH is 5.3.

*asked by john on December 10, 2015* -
## trig

Am I right on this? 2sec^2(2x)-8=0 2sec^2(2x)=8 divide by 2 sec^2(2x)=4 find square root sec(2x)=2 Now, would this simply be asking me to find where secant is equal to one? Or is there no solution because secan't (pun intended) be equal to anything above

*asked by Alex on March 23, 2008* -
## Chemistry

A solution contains 10.0 g pentane, C5H12, 10.0 g hexane, C6H14 and 10.0 g benzene, C6H6. What is the mole fraction of hexane? I figured the equation would be: ___ M Hexane x 10 Divided by 30 =Mole fraction of Hexane?

*asked by Marcus on February 10, 2013* -
## Chemistry

A quantity of sulfuric acid is added to 100. mL of water. The final volume of the solution is 111 mL and has a density of 1.14 g/mL. What mass of acid was added? Assume the density of the water is 1.00 g/mL.

*asked by john on May 6, 2011* -
## Chemistry

Knowing the milk of magnesia contains 8 g% of Mg (OH) 2, we used 1 g milk of magnesia and added 50 mL of 0.100 M HCl, determine the volumeainda of a solution of 0.105 M NaOH to titrate the excess HCl 0.100 M

*asked by Caleb on April 25, 2016* -
## Chemistry

Given Zn(NO3)2 + (NH4)2S = ZnS + 2NH4NO3 (molar mass of Zn(NO3)2 189 g, molar mass of (NH4)2S 68 g), what is the molarity of a 250 ml solution if you have 123 g of zinc nitrate?

*asked by Stephen on March 20, 2013* -
## Chemistry

the vapour pressure of a solution having 2g of solute X ( molar mass=32)in 100g of CS2(vapour pressure = 854 torr)is 848.9 torr. The molecular formula of solute is?

*asked by Swathi on May 25, 2011* -
## chemistry

A 50.00ml sample of 0.200M hydroflouric acid (HF) is titrated with 0.200M NaOH. The Pka of HF is 3.452. a) calculate the pH of the HF solution before titration b) calculate the pH after the addition of 20.00ml of NaOH

*asked by michelle on November 6, 2010* -
## chemistry

Write the overall ionic equation and the net ionic equation for the reaction between BaCl2 and Na2SO4 in aqueous solution, indentify the spectator ion and the precipitate ion for this reaction. help :(

*asked by Kelly on April 6, 2011* -
## Chemistry

a 250.0 ml buffer solution is 0.250 M in acetic acid and. 250M in sodium acetate. what is the ph after addition of. 0050 mol of HCL? what is the ph after the addition of. 0050 mol of NaOH?

*asked by Anonymous on March 7, 2011* -
## Chemistry

a 250.0 ml buffer solution is 0.250 M in acetic acid and. 250M in sodium acetate. what is the ph after addition of. 0050 mol of HCL? what is the ph after the addition of. 0050 mol of NaOH?

*asked by Anonymous on March 7, 2011* -
## Chemistry

Determine the pH of a 0,050M solution of lactic acid, CH3CH(OH)COOH (ka = 1.4x10^-4) and delta Grxn^o at 25 degrees C. Determine pH and delta Grxn^o at 25 degrees C I'm having trouble on getting started.

*asked by Anonymous on March 22, 2016* -
## chem

Calculate the volume of 0.200 M acetic acid and the volume of 0.100 M sodium acetate required to make 200.0 mL of a buffer solution with pH = 5.00. The Ka for acetic acid at 298 K is 2.00 x 10-5.

*asked by chem on April 4, 2011* -
## chem

NH4Br has been dissolved into 1 L of water at 25 degrees celcius. the solution has a pH of 5.16. calculate number of grams of NH4Br. I don't even know how to write the equation for this. Could someone please write the water + NH4 equation for me. Thanks :)

*asked by Lena on July 24, 2009* -
## Chemistry

If there were two solutions- one with areagent(100% pure) mixed in water and the other solution containing the same reagent (99.9% pure) mixed in equal volume of water. How significant would the difference in concentration be between these two solutions?

*asked by Andrew on March 29, 2010* -
## chem

In the reaction of hydrogen peroxide with iron (II) ion in acidic solution to form iron (III) ion and water, the oxidizing agent is____. Is it hydrogen peroxide?

*asked by Blair on August 11, 2008* -
## thermodynamics

3.4 A heat engine operates between two heat reservoirs with temperatures of 560 and 280 K a) The heat engine itself has a temperature of 560 K during heat addition from the 560 K reservoir and a temperature of 280 K during heat rejection to the 280 K

*asked by jody on June 15, 2007* -
## math/algebra

add:Express in simplest form 4x/(x^2 -18x +72) + 4/(x-6) factor the first denominator. Get a common denominator. Combine terms. I will be happy to critique your work. ok hers goes 4x/(x-6)(x-12) + 4/(x-6)= 4x + 4/(x-6)(x -12) or am I completely lost? you

*asked by Diana on July 15, 2007* -
## Psychology

Which of the following scenarios is the best example of positive reinforcement? A. Maria now buys a different brand of cigarettes to get two packs for the price of one. B. Nate no longer arrives late at work following a reprimand from his boss. C. Drake no

*asked by Muhammad on February 26, 2017* -
## Psychology

Which of the following scenarios is the best example of negative reinforcement? a. Vanna fastens her seatbelt as soon as she gets in her car to stop the annoying alert sound. b. Drake no longer cuts class now that his parents confiscated his iPod. c. Maria

*asked by Muhammad on February 26, 2017* -
## 11th grade english

I am supposed to state how the italicized noun clause is used, but I'm not sure how to tell the difference.. can anyone help? 1. [What I wanted to do] was to finish my work. S

*asked by Amy on December 9, 2011* -
## English

1) Can you please suggest an internet site listing everyday computer language? In particular, I need to carry out some research on computer phrasal verbs as well as on phrases, English people normally use when referring to their conputer work. 2) By the

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

My question simply has to do with how to go about solving this: Jay has written 24 songs to date. He writes an average of 24 songs to date. He writes an average of 6 songs per year. Jenna started writing songs this year and expects to write about 6 songs

*asked by Bibble on November 29, 2018* -
## Algebra

A golden rectangle has sides of length 1 and x. When a square with side length 1 is removed from the golden rectangle, the remaining rectangle has the same proportions as the original. Solve for x.

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

Blair is decorating a birthday cake with candles. The cake has a diameter of 15 inches. She wants to place the candles about every 6 inches around the edge. How many candles will she need? How could i solve this problem?

*asked by Nina on September 8, 2015* -
## 5th grade math

How do I solve this problem. Should I multiply. Ms. Hodge is baking cupcakes. She uses 3/4 cups of sugar for each batch of cupcakes. she bakes 5 batches of cupcakes. How many cups of sugar did she use

*asked by Desmond on January 5, 2016* -
## math

i don't get this question consecutive integers are integers that differ by one. you can represent consecutive integers as x,x+1,x+2 and so on. write an equation and solve to find 3 consecutive integers whose sum is 33

*asked by Sara! on May 24, 2010* -
## Math

Sarah spends 2/5 of her monthly income on rent. Sarah's rent is $750. What is sarah's montly income? Write an equation to solve this problem.

*asked by lt on November 17, 2010* -
## Math

the length of a rectangle is (x-3) inches long, and the width 3 2/5 inches. If the area is 15 3/10 square inches, write and solve an equation to find the length of the rectangle

*asked by Johnathen on March 8, 2016* -
## 6th Grade Math

My daughter needs to use PROPORTION to solve metric conversions. Can you please help? The question are for the following conversions: g=kg ___g = 5.114 kg km=m 0.5 km = ___m These are the other conversions that we need to make: ml=L g=mg cm=m kg=g km=m 0.5

*asked by Mom on February 14, 2012* -
## Precalc+trig

Solve tan(40/90) for the double angle cos(2theta). I know I use the x^2 + y^2 = r^2 formula and cos(2theta) = cos^2theta - sin^2theta. But I don't understand my answer

*asked by Anna on March 4, 2015* -
## Physics

A 19.0 ohm, 9.00 ohm , and 8.00 ohm resistor are connected in parallel to an emf source. A current of 9.00 A is in the 9.00 resistor. Find the Potential difference across the source. How do i solve this?

*asked by Anonymous on February 15, 2012* -
## Math

Jenn made 12 field goals. These were 3/4 of her field goal attempts. Write and solve an equation to determine her number of field goal attempts.

*asked by Anonymous on January 30, 2017* -
## Algebra

A piggy bank with only pennies and nickels has 28 nickels for every 52 pennies. What percent of the coins are nickels? solve this problem using a. bar diagram b. percent equation

*asked by Tonya on July 6, 2013* -
## math

(A)Write the equation in standard form and calculate its discriminant. (B)Solve the equation by using the quadratic formula. (C)After solving the equation, write it in factored form. 1/8x^2=x-5/2 Please help!!!!! :(

*asked by Andrea on April 18, 2018* -
## math

State the solutions, or estimated solutions, to each quadratick equation. We have equation is x^2-9x+20.25=0 and the graph is y=x^2-9x+20.25 Not sure how to figure this one out. I assume I just solve the equation and not the graph to get the ordered pairs?

*asked by m on January 12, 2011* -
## math

(A)Write the equation in standard form and calculate its discriminant. (B)Solve the equation by using the quadratic formula. (C)After solving the equation, write it in factored form. 0=8+4t-t^2 Please help!!!!! :(

*asked by Andrea on April 19, 2018* -
## Math 7

how high is a tree that casts a 25 foot shadow at the same time a 6 foot pole casts a 10 foot shadow? Please help! I don't understand how to solve any problem like this!!

*asked by Jade on June 3, 2015* -
## Math

There are 15 vegetables in the garden. They are planted in rows of 5. There are 2 carrot plants and 3 potato plants in each row. How many carrot plants are in the garden? Draw to solve the problem.

*asked by Miriam on January 28, 2016* -
## Math

Solve. (-10x^3+30x-20) / (-5x+5) A) 2x^2-2x+4 B) -2x^2-2x-4 C) -2x^2+2x+4 D) 2x^2+2x-4*** Simplfy x/6x-x^2 A) 1/6-x; where x=0,6 ***** B) 1/6-x ; where x= 6 C) 1/6x ; where x = 0 D) 1/6 Simplfy x-2/x^2+4x-12 A) 1/x+6; where x=-6 B) 1/x+6; where x= -6,2***

*asked by Max on June 16, 2017* -
## Algebra 1

2. The line y = 4x - 7 crosses the y axis at: a.(4, 0) b.(0, 4) c.(-7, 0) d.(0, -7) Set y=0 and solve for x You can automaticallly elimintae b. and d. because y has to be 0 when the line crosses the y-axis. Something seems to be wrong with your other

*asked by Rachel on October 23, 2006* -
## Math

In a class of 29 males and females there are 12 females. Write the ratio of males to females. Solve. Express each ratio as a fraction reduced to lowest terms.

*asked by Artie on September 8, 2012* -
## algebra help

Solve the problem. Joe has a collection of nickels and dimes that is worth $6.00. If the number of dimes were doubled and the number of nickels were increased by 6, the value of the coins would be $9.90. How many dimes does he have?

*asked by angela on March 20, 2009* -
## Math

The average scores of the last four tests taken by Mike is 86 marks. To raise the scores to 92 marks, at least how many times does Mike have to get 100 marks in a row? Please help me to solve this one! Thanks a lot🙏

*asked by Natni on April 24, 2019* -
## Math

On a math test,12 students earned an A. This number is exactly 25% of the total number of students in the class. How many students are in the class? 'In this problem I'm not sure whether I'm being asked to solve for one or two unknowns. May I have your

*asked by Cliff on July 21, 2010* -
## math

(A)Write the equation in standard form and calculate its discriminant. (B)Solve the equation by using the quadratic formula. (C)After solving the equation, write it in factored form. 7x(x-2)+2(x+4)=3 Please help!!!!! :(

*asked by Andrea on April 23, 2018* -
## HR

Which of the following approaches would be most appropriate when gathering information for jobs that are repetitive and involve physical activity? A. A job analyst visits the workplace and asks employees to show what the job entails. B. A job analyst

*asked by Babybear on June 17, 2018* -
## College Physics

A uniform meter stick of mass M has an empty paint can of mass m hanging from one end. The meter stick and the can balance at a point 19.9 cm from the end of the stick where the can is attached. When the balanced stick-can system is suspended from a scale,

*asked by Mimi on April 27, 2013* -
## Physics

Two systems are formed from a converging lens and a diverging lens, as shown in parts a and b of the drawing. (The point labeled "Fconverging" is the focal point of the converging lens.) An object is placed inside the focal point of lens 1 at a distance of

*asked by Damien O' Connell on March 18, 2015* -
## Maths Algebra

The diameter of Sun is (1.4 ×10^8)m and the diameter of Earth is (1.2742×10^4)m . Show that the diameter of sun is nearly 100 times the diameter of Earth.

*asked by Vivek on August 19, 2016* -
## Math

The cubes show how many students rode the bus to school today How many students rode the bus to school

*asked by Amonnie on January 6, 2015* -
## Maths

Show that the mid point of line joining points (-5,12) and (-1,-12) is a point of trisection of the line joining the points (-8,-5) and (7,10).

*asked by Anonymous on February 13, 2017* -
## further mathematics

Let P=(cosA sinA) (sinA cosA) Q=(cosB sinA) (sinB cosA) show that PQ=(cosA(A-B) sin(A B)) (sinA(A B) cos(A-B))

*asked by James on September 17, 2013* -
## College Math Probability

Let 1

*asked by Genie_math on October 7, 2012* -
## math

Q1: If K=In a -In b +In c -t/bc,show that K=(ac/b)e^(-t/bc). Q2:Express log(8)5 in terms of m ,where m=lg 2 Q3:Given that log (4)3 =a and log(4)5 =b ,express log(75)16 in terms of a and/or b . really don't know how to do these qns..please help ! thanks a

*asked by Kris on July 18, 2013* -
## Algebra

Hi there. Can "x^2 - 10x + 22 = -2" be solved by taking the square root? Can "4x^2 + 8x + 3 = 0" be solved by taking the square root? If so, please show me an explanation.

*asked by Terry on December 29, 2014*

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