# 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 811-
## Social Studies

7. The value of trade is extremely high in a. Sudan. b. Nigeria. c. Botswana.*** d. Chad. 8. An African economist living in Mali between 2002 and 2003 would most likely be a. impressed with the value generated through commercial services. b. satisfied,

*asked by Kaai97 on October 15, 2015* -
## College-Article Review

Part A asks for: A one or two paragraph description of the work's physical structure and any information about the author you may have discovered (ex. magazine title, author, date published). ---Keep in mind that I cannot write a bibliography/works cited.

*asked by Anonymous on September 24, 2008* -
## english paper

Hello I have a quick question. I have to write an english paper on the recent issues in business. it says that "purpose in writing this report is to SYNTHESIZe current, reported information on a recent issue in bussiness" The reason why i have the work

*asked by bob on February 6, 2009* -
## English

Could you please check these sentences for me? Thank you very much for your invaluable help. 1) I find it difficult to translate the following description into English since I don't know how old the students are in their fifth or sixth class. How old are

*asked by Henry2 on October 20, 2011* -
## Social Studies

7. The value of trade is extremely high in a. Sudan. b. Nigeria. c. Botswana.*** d. Chad. 8. An African economist living in Mali between 2002 and 2003 would most likely be a. impressed with the value generated through commercial services. b. satisfied,

*asked by Kaai97 on October 15, 2015* -
## stastistics

The data show the time intervals is after an eruption(to the next eruption) of a certain geyser. Find the regression equation, letting the first variable be the independent (r) variable. Find the best predicted time of the interval after an eruption that

*asked by anonymous on November 21, 2013* -
## Chemistry

1)The following balanced chemical equation represents the reaction of calcium carbonate CaCO3 (s), with hydrochloric acid : CaCo3(s) + 2HCl (aq) -> CaCl2(aq) + CO2(g) + H2O(l) If 155 g of calcium carbonate reacts with 245 g of hydrochloric acid, what mass

*asked by Nikki on December 19, 2012* -
## Math Grade 5

Mr. Jacob is 55 years old and Tony is 7 years old. In how many years will Mr. Jacob be 4 times as old as Tony? Please help me solve this.

*asked by Ann on October 19, 2012* -
## Economics/Math

MC=40P MR=1000-10P Solve for P 40P=1000-10P= 50P=1000 P=20 ???

*asked by Jiggsy on March 10, 2008* -
## Math

How do I solve Cos(theta)= 3/7 if 0 degrees is less than or equal to theta and theta is less than or equal to 90 degrees?

*asked by john on December 6, 2009* -
## math

f(x)=1/x, g(x)=1/x^2-1, h(x)=1/x-1 and the difference between 6 times the function values of f and 3 times the function values of g is 7 times those of h. how do i solve for x?

*asked by i love polka on November 5, 2008* -
## Algebra II (check)

Solve: sqrt3x+6 + 4 =< 7 sqrt3x+6 + 4 =< 7 subtract 4 from both sides sqrt3x+6 =< 3 subtract 6 from both sides 3x/3x =< -3x/3x x =< -1 (answer)

*asked by Jon on March 1, 2008* -
## Math

1. Write the coordinates of point A A. (2, -3) B. (-3, 2) *** C. (-2, 3) D. (3, -2) 2. Laura is designing a rectangular porch for her house. On her scale drawing, the vertices of the rectangle are (2, 7), (8, 7), and (2, 9). What are the coordinates of the

*asked by Neru on May 23, 2019* -
## Physics

At a nuclear power plant, water at 6degress Celius from a nearby lake is used in a heat exchange to condense spent steam at a temperature of 115 degees C to water at 80 degrees C. If the cooling water returns to the lake at a temperature of 18 degrees C,

*asked by alex on April 20, 2017* -
## History

All day long and in all places I am always fastening upon you, stirring you and persuading you and reproaching you. You will not easily find another like me. Use the passage to answer the question. 1. In the passage, what Greek philosopher describes his

*asked by alex on October 10, 2016* -
## Science

What are fuses and why do they come in different sizes? Fuses are devices placed in electrical circuits as protection for those circuits. They consist of small pieces of wire, sometime as ribbons, and are placed in series with the circuit so that the

*asked by Bethan on September 28, 2006* -
## 12 math

benetley chalk brush manufacturer company has 900 empolyess: are female, are union members and are single.295 are single females, 187 are single union members 190 are female union memebers and 120 are single female union members. how many workers are

*asked by steveo on August 30, 2008* -
## English

Please read for any errors. And correct them. The premium on your disability insurance policy is overdue. Don’t let his valuable policy lapse. If you become disabled you will receive a monthly income from this policy. This disability policy provides

*asked by Renell on February 16, 2011* -
## sociology

Professor Winston is explaining to his class that people who watch more hours of violent television programming also show greater levels of hostility and violence toward others. He continues to say that this means violence on television causes increased

*asked by can you check my answers on April 25, 2014* -
## Algebra

Can someone check my work please? Fine the sum of the arithmetic series -4 + 1 + 6 + 11 + ..... + 91. I know that a1= -4, d=5, and a20=91. S20= 20/2 (-4 + 91) S20= 10 (87) S20= 870 The sum of the arithmetic series is 870.

*asked by Algebra on April 26, 2019* -
## Algebra 2 Could use help asap

I really am trying to work these problems out on my own. Please help If f(x)=3x^2 g(x)= 1/6+x find the following and give the domain (f+g) (x) (3x^2) + (1/6+x) x is all real numbers and x is not equal to 6 (f-g) (x) (3x^2) - (1/6+x) 3x^2-x-6 x is all real

*asked by Sam on February 1, 2011* -
## Physics

A 0.568 kg particle has a speed of 1.57 m/s at point A and kinetic energy of 7.67 J at point B. What is its kinetic energy at A? What is its speed at point B? What is the total work done on the particle as it moves from A to B?

*asked by Chris on October 1, 2013* -
## Math

Use the function tables to solve the problems. Table :2 Input ( Number of Pies Sold). Output( cost) 1. $ 12.65 2 3 $ 37.95 4 What is the rule for Table 2 ? What are the missing output entries in Table 2? 2/ following the same rule set in Table 2 , what

*asked by NAwaf on February 22, 2014* -
## math

John and Smith went to a stationery shop. John bought 6 pens, 4 pencils and 3 erasers. Smith bought 3 pens, 8 pencils and 6 erasers and spent 20% more than John. What percentage money did John spend on pens? How can I form an equation and solve?

*asked by rachel on December 8, 2014* -
## Algebra 2

Did I solve this word problem correctly? In last week’s basketball game, the Lions scored 6 less than twice what the Bobcats scored. The sum of their scores is 30. How many points did the Lions and the Bobcats score individually? 2x+2x-6=30 2x+2x=36

*asked by Ernie on November 1, 2015* -
## Math

1: select all the pairs of ratios form a proportion. (2 points) A: 1/6, 4/20 B: 7/9, 28/36*** C: 14/19, 21/27 D: 30/80, 6/18 2: Which pair of ratios does NOT form a proportion? (1 point) A: 3/5, 24/40 B: 30/10, 15/5**** C: 9/14, 3/4 D: 7/12, 14/24 3: For

*asked by AngelDabSwag on May 8, 2018* -
## math

a circle is tangent to the y-axis at y=3 and has one x-intercept at x=1 a) what's the other x-intercept b) what's the equation i have no clue how to solve this! You know that the center of the circle is somewhere in the line y = 3, denote the x-coordinate

*asked by Anonymous on August 4, 2007* -
## physics

Tom the cat is chasing Jerry the mouse across a table surface 1.5 m off the floor. Jerry steps out of the way at the last second, and Tom slides off the edge of the table at a speed of 5.0 m/s. Where will Tom strike the floor, and what velocity components

*asked by Anonymous on September 26, 2007* -
## physics

Two Earth satellites, A and B, each of mass m = 960 kg, are launched into circular orbits around the Earth's center. Satellite A orbits at an altitude of 4500 km, and satellite B orbits at an altitude of 13600 km. a) What are the potential energies of the

*asked by Kensey on June 18, 2012* -
## math

The cheerleading squad is having a bake sale. They want to bake at least 120 cookies. They made 12 cookies the first hour and 24 cookies the second hour. a)Write an inequality that describes the scenario. Let Variable h represent the number of hours that

*asked by XenaGonzalez on October 18, 2015* -
## physics

A 10 g particle has the potential energy shown in a graph with the y-axis label U(J) and the x axis is labeled in cm. There is a diagonal line from 4 J down to 1 cm and the line levels out on the x axis to 3 cm and rises again to a height of 2 J at 5 cm

*asked by Ashley on December 2, 2009* -
## English

Hi, Can someone help me with my online Psychology assignment? She is a stickler for punctuation and grammar. I have not taken English yet. I need all the help I can get. The following is my assignment and response. For this assignment, I'd like you to

*asked by Michelle on March 13, 2014* -
## Biochemistry

An enzyme-catalyzed reaction was carried out in a 0.2M �Tris� buffer, pH 7.8. As a result of the reaction, 0.03 mole/liter of H+ was produced. (pKa of Tris =8.1) (a) What was the ratio of Tris+ (conjugate acid) / Triso (Conjugate base) at the start of

*asked by Christine on June 26, 2016* -
## English

In the first paragraph, underline all common nouns once and proper nouns twice. In the second paragraph, underline two pronouns. In the third paragraph, underline one action verb once, underline a helping verb twice, and circle a linking verb. In the

*asked by Cathy on October 1, 2010* -
## English

What best describes Emily Dickinson's attitude towards death? A.sentimental B.angry C.accepting

*asked by Dee on November 19, 2015* -
## math

2. In a certain state, it has been shown that only 56% of the high school graduates who are capable of college work actually enroll in colleges.Find the probability that, among the 11 capable high school graduates in this state, each number will enroll in

*asked by carol on March 30, 2014* -
## math

In a certain state, it has been shown that only 56% of the high school graduates who are capable of college work actually enroll in colleges.Find the probability that, among the 11 capable high school graduates in this state, each number will enroll in

*asked by carol on March 30, 2014* -
## math

In a certain state, it has been shown that only 56% of the high school graduates who are capable of college work actually enroll in colleges.Find the probability that, among the 11 capable high school graduates in this state, each number will enroll in

*asked by carol on March 30, 2014* -
## math

2. In a certain state, it has been shown that only 56% of the high school graduates who are capable of college work actually enroll in colleges.Find the probability that, among the 11 capable high school graduates in this state, each number will enroll in

*asked by carol on March 30, 2014* -
## English

Is Biennial a word for every two years? Biannual means twice a year, right? So, how can I say eliminating a subscription will save the school $5,000 every two years? Eliminating the subscription will save the school a biennial fee of $5,000. ^^does that

*asked by Afrikah on November 5, 2017* -
## Calculus AP

hi again im really need help TextBook: James Stewart:Essential Calculus, page 311. Here the problem #27: First make a substitution and then use integration by parts to evaluate the integral. Integral from sqrt(pi/2) TO sqrt(pi)of θ^3 cos(θ^2)dθ. i did

*asked by Vicky on August 2, 2012* -
## physics-heat

One cant solve this without knowing the time involved, or the mass of steam. steamers are vessels you can use to cook food in.food in steamer gains heat as the steam condenses on it.a boiler supplies steam at 105 degree to a steamer at the tare of 445 g

*asked by bobpursley on April 3, 2007* -
## accounting

prepare entries to record the following summarized operations related to production for a company using a job order cost system: a. materials purchased on account-$167000 b. prepaid expenses incurred on account-$12200 c. materials pequisitioned: for

*asked by Tonya on April 1, 2011* -
## physics

the magnification caused by a convex lens is represented by Hi/Ho, where hi is the height of the image and ho is the height of the object. Using that ratio, show that the magnification caused by a convex lens is equal to di/do(ratio of the image distance

*asked by hunar on December 12, 2012* -
## precalculus

Can you check my answers? 1.Which of the following shows the best next step to prove the following by mathematical induction? 3^n>n*2^n, n≥1 1.When n=1, the formula is valid because 3^1 1*2^1 3>2 2.Assuming that 3^k>k*2^k a.3^k+1>k+1*2^k+1

*asked by sally on December 15, 2016* -
## Math

1.find x and y if 3 raise to the power 2x-y equals 1 and 16 raise to the power x divided by 4 equals 8 raise to the power 3x-y 2. solve 2x-3y 2=x 2y-5=3x y?

*asked by poppy on April 29, 2019* -
## algebra

The length of a rectangle is 4 in. more than twice its width. If the perimeter of the rectangle is 32 in., find the width of the rectangle let x = width length is then 2x+4 so 2(2x+4)+2x=32 Solve for x 4x + 8 +2x = 32 6x=24 x=4 thanks

*asked by veronica on June 5, 2007* -
## chem lab (webwork)

Which of the following is NOT true of colligative properties? Colligative properties are... A. dependent on the mass of solute present. B. independent of the chemical identity of the solute. C. responsible for lowering the vapor pressure of a solution

*asked by UCI studebt on April 3, 2010* -
## Chemistry

1. The decomposition of acetaldehyde is a second order reaction with a rate constant of 4.71 × 10^−8 L/mol/s. What is the instantaneous rate of decomposition of acetaldehyde in a solution with a concentration of 5.55 × 10^−4 M? 2. The rate constant

*asked by Bob on April 11, 2017* -
## chemistry

HF hydrolyzes according to the following equation: HF(aq)+H2O(l) H3O+(aq)+F-(aq) When 0.0300 mol of HF dissolves in 1.0 L of water, the solution quickly ionizes to reach equilibrium. At equilibrium, the remaining [HF]=0.0270 M. a.) How many moles of HF

*asked by alison on May 1, 2016* -
## chemistry

Which of the following is NOT true of colligative properties? Colligative properties are... A. responsible for lowering the vapor pressure of a solution versus the vapor pressure of the pure solvent. B. independent of the chemical identity of the solute.

*asked by jay on October 4, 2010* -
## Chemistry (Check)

Calculate the DHrxn of C6H12O6 (s) + O2 (g) --> CO2 (g) + H2O (l) with DHf. C6H12O6(s) -1260.04 O2(g) 0 CO2(g) -393.5 H2O(l) -285.840 I balanced the equation and my work: DHrxn = [14mol(-393.5+(-285.840))] - [7mol(-1260.04+0)] = -690.48 KJ/mol Is this

*asked by Anonymous on November 16, 2015* -
## Chemistry (Check)

Calculate the DHrxn of C57H110O6 (s) + O2(g) --> CO2(g) + H2O(l) with DHf. C57H110O6(s) -390.70 O2(g) 0 CO2(g) -393.5 H2O(l) -285.840 I balanced the equation and my work: DHrxn = [224mol(-393.5+(-285.840))] - [165mol(-390.70+0)] = -87706.66 KJ/mol Is this

*asked by Anonymous on November 16, 2015* -
## Accounting

What is the value of a company stock if it grows at a supernormal rate of 18% for the first four years, and then slows down to a constant growth rate of 10%. The company just paid annual dividend of $2.00/share, and the rate of return on common stock (rcs)

*asked by Lyra on June 29, 2017* -
## Math

An auditorium has 50 rows of seats. The first row has 20 seats, the second row has 21, the third row has 22 seats, and so on, each row having one more seat than the previous row. How many seats are there all together? a. write 2 different expressions for

*asked by Emily on October 29, 2010* -
## statistics

The average scuba diver can stay under water for 42 minutes with a standard deviation of 8 minutes.(show graph) B. what is the probabilty that a diver stays under for the less than 53 minutes? c.what is the probabilty that a diver stays under between 25

*asked by Ashley on November 26, 2012* -
## statistics

The average scuba diver can stay under water for 42 minutes with a standard deviation of 8 minutes.(show graph) B. what is the probabilty that a diver stays under for the less than 53 minutes? c.what is the probabilty that a diver stays under between 25

*asked by Ashley on November 26, 2012* -
## statistics

The average scuba diver can stay under water for 42 minutes with a standard deviation of 8 minutes.(show graph) B. what is the probabilty that a diver stays under for the less than 53 minutes? c.what is the probabilty that a diver stays under between 25

*asked by Ashley on November 26, 2012* -
## Physics

. (a) How high a hill can a car coast up (engine disengaged) if work done by friction is negligible and its initial speed is 110 km/h? (b) If, in actuality, a 750-kg car with an initial speed of 110 km/h is observed to coast up a hill to a height 22.0 m

*asked by Anonymous on June 10, 2014* -
## Physics

I have a question on fluids. Water in a section 1.2m wide, 2m high. retained by sluice gate that can pivot about its base. There is a retaining cable at the top of the gate. Determine tension in the retaining cable at the top of the gate when the depth of

*asked by Danny on April 13, 2015* -
## physic

Hi! please help A sledge loaded with bricks has a total mass of 17.8 kg and is pulled at constant speed by a rope inclined at 20.8° above the horizontal. The sledge moves a distance of 20.6 m on a horizontal surface. The coefficient of kinetic friction

*asked by Chan on October 20, 2009* -
## Mechanical Principles

I have a question on fluids. Water in a section 1.2m wide, 2m high. retained by sluice gate that can pivot about its base. There is a retaining cable at the top of the gate. Determine tension in the retaining cable at the top of the gate when the depth of

*asked by Danny on April 13, 2015* -
## physics

(a) How high a hill can a car coast up (engine disengaged) if work done by friction is negligible and its initial speed is 110 km/h? (b) If, in actuality, a 750-kg car with an initial speed of 110 km/h is observed to coast up a hill to a height 22.0 m

*asked by Anonymous on June 10, 2014* -
## Physics

(a) How high a hill can a car coast up (engine disengaged) if work done by friction is negligible and its initial speed is 110 km/h? (b) If, in actuality, a 750-kg car with an initial speed of 110 km/h is observed to coast up a hill to a height 22.0 m

*asked by Anonymous on June 10, 2014* -
## LA

Both Ernesto from barrio boy and the boy in A day's wait interact with adults. Ernesto interacts with Ms. Ryan, while the sick boy interacts with his father. In a paragraph, compare and contrast how the boys interact with the adult. focus on how the boys

*asked by A person that needs help. on January 8, 2018* -
## 5th grade Math

Can you check my answer? 4. Solve. 6 tenths = ___ thousandths Answer = 600 5. Write 347.392 in expanded form. Answer: (3*100)+(4*10)+(7*1)+(3* 1/10) + (9*1/100)+ (2*1/1000) 9. Write in standard form (number name) for: three thousand four hundred eight-two

*asked by Jared on October 7, 2017* -
## chem

HCl is a strong acid and ionizes 100%. NaOH is a strong base and ionizes 100%. We have no way of knowing the pH of HCl + H2O because the problem doesn't state the amount of HCl added or the concentration of HCl. For the NaOH + HCl ==> NaCl + HOH. NaCl in

*asked by DrBob222 on May 15, 2007* -
## math(HELP PLEASE)

can someone please answer these 2 questions please..with the work and answer,ive been stuck on for a while and just wanna sleep but thanks. Find the unit price for each option shown below. Round to the nearest cent when necessary. Indicate which option is

*asked by Anonymous on February 11, 2014* -
## World History

How did the Industrial Revolution introduce justifications for imperialism? (Select all that apply.) Industrialized nations sought to bring technological knowledge to Africa and Asia. Industrialized nations sought colonies to deport people who would work

*asked by Help on March 19, 2019* -
## history

How did the Industrial Revolution introduce justifications for imperialism? (Select all that apply.) Industrialized nations sought to learn from the economic systems within Africa. Industrialized nations sought colonies for natural resources to power their

*asked by need some help please on January 10, 2019* -
## Math

Solve. log(x^3)-log(2)=log(2x^2)

*asked by Mark on October 14, 2009* -
## Math

Solve X=8(mod 11), X=9(mod 12), X=10(mod 13)

*asked by Morris on December 2, 2010* -
## math

x=-2 output=12 x=1 output =9 x=4 output =6 help me solve

*asked by jack on February 9, 2011* -
## math

x=-2 output=12 x=1 output =9 x=4 output =6 help me solve

*asked by jack on February 9, 2011* -
## Algebra

Solve. .25(250)+250/250

*asked by Kelly on October 27, 2011* -
## math

3xsquared + 27 = 5 3xsquared -5x = -3xsquared + 6 SOLVE

*asked by katy on April 9, 2013* -
## Math

(2 + sqrt 2)/(2 - sqrt 2) = (x)/(3 + sqrt 10) How to solve for x?

*asked by Anonymous on April 26, 2014* -
## algebra

If LOGx (A)=0.7 and LOGx (B) =0.5 how do I solve LOGx (B/A)

*asked by Irma on April 5, 2010* -
## math

x=-2 output=12 x=1 output =9 x=4 output =6 help me solve

*asked by jack on February 9, 2011* -
## math grade 12

Solve. log(x^3)-log(2)=log(2x^2)

*asked by Mark on October 14, 2009* -
## math

Solve 3 log x = 1 + log (4x+5)/ log 2

*asked by lindsay on July 10, 2014* -
## physics

The position vector r of a particle moving in the xy plane is r=2ti+2sin[(pi/4)t]j , with is in meters and t in seconds. (a) Calculate the x and y components of the particle's position at , and 4.0 s and sketch the particle's path in the plane for the

*asked by Anonymous on March 10, 2013* -
## statistics

People end up tossing 12% of what they buy at the grocery store (Reader's Digest, March 2009). Assume this is the true population proportion and that you plan to take a sample survey of 540 grocery shoppers to further investigate their behavior. a.Show the

*asked by Vanessa on April 15, 2014* -
## statistics

People end up tossing 12% of what they buy at the grocery store (Reader's Digest, March 2009). Assume this is the true population proportion and that you plan to take a sample survey of 540 grocery shoppers to further investigate their behavior. a. Show

*asked by Vanessa on April 14, 2014* -
## Math

People end up tossing 12% of what they buy at the grocery store (Reader's Digest, March 2009). Assume this is the true population proportion and that you plan to take a sample survey of 540 grocery shoppers to further investigate their behavior. a.Show the

*asked by Vanessa on April 16, 2014* -
## Statistics

People end up tossing 12% of what they buy at the grocery store (Reader's Digest, March 2009). Assume this is the true population proportion and that you plan to take a sample survey of 540 grocery shoppers to further investigate their behavior. a.Show the

*asked by Vanessa on April 16, 2014* -
## Chemistry

What is the Pb2+ concentration in a saturated solution of PbCl2 if the concentration of chloride ion is 0.023 M? Units: M ksp = 1.72x10^-5 i can't seem to get the answer. i have tried and ICE diagram and going from there: PbCl2 (s) Pb ^2+ = 2Cl- I: 0.023 M

*asked by Lynn on April 3, 2017* -
## AP Chemistry

I am honestly lost on this question and you can't proceed without solving the first on, so if anyone would be so inclines to help me out Aluminum metal reacts with zinc(II) ion in an aqueous solution by the following half-cell reactions: Al(s) → Al3+(aq)

*asked by Damien on February 12, 2018* -
## 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 by Leah on February 14, 2013* -
## CHEMISTRY- answer check

A 0.386g sample of a protein was dissolved in water and made up to a volume of 60mL at 21.0°C. At this temperature the osmotic pressure of this solution was 1.24mmHg. Calculate the molecular mass of the protein 12682 g mol-1 95025 g mol-1 9627613 g mol-1

*asked by lulu on October 9, 2010* -
## Chemistry

The quantity of antimony in a sample can be determined by an oxidation-reduction titration with an oxidizing agent. A 7.79-g sample of stibnite, an ore of antimony, is dissolved in hot, concentrated HCl(aq) and passed over a reducing agent so that all the

*asked by Jackie on April 23, 2017* -
## Chemistry

A mixture initially contains A,B, and C in the following concentrations: A1 = 0.300 M, B1 = 1.15M, and C1 = 0.350 M. The following reaction occurs and equilibrium is established: A+2B C At equilibrium, A2 = 0.190M and C2 = 0.460M. Calculate the value of

*asked by Saira on February 5, 2009* -
## Calc

This problem is really weird. I have to explain why MVT applies for f(x)=2sinx-sin2x on the closed interval 7pi,8pi and then determine all values of c in the interval (7pi,8pi) that satisfies the conclusion of the theorem. However, the condition of MVT is

*asked by Anoop on December 5, 2016* -
## Economics

6. The chapter uses the analogy of a "leaky bucket" to explain one constraint on the redistribution of income. a. What elements of the U.S. system for redistributing income create the leaks in the bucket? Be specific. b. Do you think that Republicans or

*asked by Sarah on March 1, 2007* -
## maths equations

could you please help me on this equation r = sx2/2t im really stuck Your non-use of parenthesis makes in difficult to know what the equation is. What are you trying to do with the equation? sorry im trying to make x the subject divide each side by s r/s=

*asked by bex on May 13, 2007* -
## Chemistry URGENT

I am having a hard time understanding how to calculate pH. my textbook states that that pH =-log[H^+]. I have two questions that asks: What is the H^+ concentration in an acid with of pH 4.6? Express your answer as a power of 10. What is the H^+

*asked by jazz on April 24, 2014* -
## Math(Please help)

Projectile motion: Let's suppose you throw a ball straight up with an initial speed of 50 feet per second from a height of feet. a) Find the equation that describes the motion as a function of time. My answer was x = 0 and y=-16t^2+50t+6 b) How long is the

*asked by Abbey on April 16, 2010* -
## Chemistry

Please help! I don’t know where to start and I need step by step on how to solve: A gaseous mixture inside a rigid steel vessel contains 75% CO2(g) and 25% H2O (g) by volume at 175 degrees Celcius and 225 kPa. The mixture is then cooled to 0 degrees

*asked by Jacqueline on April 26, 2018* -
## Intermediate Algebra Word Problem

A river's current is 4mph. A boat travels 48 miles downstream in the same time it travels 24 miles upstream. Find the speed of the boat. A) What does the variable stand for? x stands for the speed of the boat. B) Write the equation. 24/x - 4 = 48/x + 4 C)

*asked by Jennifer on February 11, 2009* -
## Algebra Help

1. You have recently found a location for your bakery and have begun implementing the first phases of your business plan. Your budget consists of an $80,000 loan from your family and a $38,250 small business loan. These loans must be repaid in full within

*asked by Mark on September 4, 2008*

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