# 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 645-
## Math (Trig)

sorry, another I can't figure out Show that (1-cot^2x)/(tan^2x-1)=cot^2x I started by factoring both as difference of squares. Would I be better served by writing in terms of sine and cosine? Such as: [1-(cos^2x/sin^2x)]/[(sin^2x/cos^2x)-1]=(cos^2x/sin^2x)

*asked by mtd on April 9, 2008* -
## Math

What kind of graph would you use to show the number of twins born each year? I think a line graph Would you use a line plot or bar graph to display a survey of what teens do for entertainment after school? I think line plot

*asked by Anonymous on March 11, 2014* -
## Math

What kind of graph would you use to show the number of twins born each year? I think a line graph Would you use a line plot or bar graph to display a survey of what teens do for entertainment after school? I think line plot

*asked by Anonymous on March 11, 2014* -
## math

There are 3 pitchers of juice. Each student will be served ^ of the juice in a pitcher. How many students will get juice? l a. Draw lines on the pitchers to show how many students these pitchers will serve. b. Write a number model to describe the problem.

*asked by alex on March 18, 2013* -
## chemistry

in which of the following pairs of compounds are both members of the pair molecular compounds? PCl3 and LiBr CCl4 and KOH NaH and CaF2 more than one correct response no correct response if more than one response please show all the correct answers thanks

*asked by Johnny on February 23, 2014* -
## Physics

A 500g block is shot up a 25degree incline with an initial speed of 200cm/s. Determine the distance, d, that it will go up the incline if the coefficient of kinetic friction between it and the incline is 0.150? Use Entergy considerations to solve the

*asked by Anonymous on May 2, 2013* -
## American History

1.What was the central conflict between Native American groups and the United States, and how did their goals differ? 2. (a)What attempts were made to solve the conflict, and what circumstances usually caused the efforts to fail? (b)What other solutions to

*asked by Kelsey on October 17, 2013* -
## algebra

Why does the inequality sign change when both sides are multiplied or divided by a negative number? Does this happen with equations? Explain why or why not? Write an inequality for your classmates to solve. In your inequality, use both the multiplication

*asked by wade on January 3, 2012* -
## math

Plz solve this problem.. A wire of 100 cm is cut into two parts and each part is bent to form square.if the sum of the areas of two squares is 425 cm square.find the length of side of two square.

*asked by Ali on January 21, 2016* -
## algebra solving log equations

n sqrt(x-8)= 5 I would like help to solve this what i did was to take away the square root i squared both sides coming up with (ln sqrt(x-8))^2= (5)^2 ln(x-8)=25 am i alowed to do this with ln in the equation? then i subtract 8 from both sides ln x = 17

*asked by Marcos on October 30, 2013* -
## Math

My math teacher gave us this problem. Put the numbers 8,6,2,5,10,1,3,7,9,4 in number order of 1 to 10 in 5 moves. You can move 1,2,or 3 numbers for each move. If you don't have time to solve, any tips would be great!

*asked by Amy on November 18, 2012* -
## Math

The ages of three siblings combined is 27. The oldest is twice the age of the youngest. The middle child is 3 years older than the youngest. Write and solve an equation to find the ages of each sibling.

*asked by Cheyanne on April 3, 2016* -
## Math word problem

The Mad River flows at a rate of 3 km/h. In order for a boat to travel 78.2 km upriver and then return in a total of 8 hr, how fast must the boat travel in still water? what formula would be used to solve this problem?

*asked by Shawn on November 9, 2008* -
## Trig--check answer

Solve the equation of the interval (0, 2pi) cosx=sinx I squared both sides to get :cos²x=sin²x Then using tri indentites I came up with cos²x=1-cos²x Ended up with 2cos²x=1 Would the answer be cos²x=1/2???

*asked by Brian on April 15, 2009* -
## conversion

how to convert 32.2 pounds mass to pounds force, to kilograms, and to newtons? i don't want you to solve the problem, but how do lb-m and lbf, kg, and Newtons relate to eachother. do they have conversion equations like 1 feet=12 in for example

*asked by jen on September 27, 2008* -
## Pre-calc Solve logarithmic

ln sqrt(x-8)= 5 I would like help to solve this what i did was to take away the square root i squared both sides coming up with (ln sqrt(x-8))^2= (5)^2 ln(x-8)=25 am i alowed to do this with ln in the equation? then i subtract 8 from both sides ln x = 17

*asked by Marcos on October 30, 2013* -
## algebra

The Parker’s are installing a wooden fence in their backyard. They have 330 feet of wood. The length can be no more than 90 feet. Write and solve an inequality to find the maximum width of the fence.

*asked by billy on March 1, 2014* -
## Trigonometry

Solve the following trig equations. Give all positive values of the angle between 0 degrees and 360 degrees that will satisfy each. Give any approximate value to the nearest minute only. 3 sin è - 4 cos è = 2 Can you please help me with this one.

*asked by anon on March 3, 2011* -
## college algebra

A farmer has 1000 feet of fence a rectangular plot of land. The plot lies along a river so that only has three sides need to be fenced. Find the largest area that can be fenced. What's the best way to solve this?

*asked by Anonymous on February 20, 2013* -
## Chemistry

Can someone please help me solve this homework problem for my chemistry class.It's my last problem and I'm stuck!:/ Thanks :) A 4.0*10^1kg sample of water absorbs 308KJ of heat. If the water was initially at 25.5 C, what is its final temperature?

*asked by Eliza on September 16, 2012* -
## Graphing - Trigonometry

Below is the graph of y = a cos(bx+c)+d, where a, b, and c are positive, and c is as small as possible. Find a + b + c + d. prntscr. com/20mkyo The link is to a screenshot of the graph. (without spaces) I'm unsure of how to solve - I tried it and got y = 2

*asked by Sam on October 29, 2013* -
## Precal

Use the Law of Sines to solve for all possible triangles that satisfy the given conditions. (If an answer does not exist, enter DNE. Round your answers to one decimal place. Below, enter your answers so that A1 is smaller than A2.)

*asked by Anonymous on October 10, 2011* -
## Algebra

The Parker’s are installing a wooden fence in their backyard. They have 330 feet of wood. The length can be no more than 90 feet. Write and solve an inequality to find the maximum width of the fence.

*asked by Gator on June 9, 2014* -
## Calculus

h(x)= x + cos(ax), where a is a positive constant such that 0 < a < 4. For what values of a will h(x) have a relative maximum at x=1? So I found the derivative and got h'(x) = 1- asin(ax). Then I plugged in 1 for x and set the derivative equal to zero, so

*asked by ashley on May 1, 2015* -
## Algebra

The ages of three siblings combined is 27. The oldest is twice the age of the youngest. The middle child is 3 years older than the youngest. Write and solve an equation to find the ages of each sibling.

*asked by Random on October 8, 2018* -
## Physics

"The exact relationship for the period T of a simple pendulum is T=2*pi*sqrt_of(l/g) where l is the length of the pendulum, and g is the acceleration of gravity." I have to rearrange the formula to where you solve for l instead of t. I started to try to do

*asked by Emily on January 13, 2008* -
## Physics

A brick is thrown vertically upward with an initial speed of 4.40 m/s from the roof of a building. If the building is 74.0 m tall, how much time passes before the brick lands on the ground? I don't get how to solve it still

*asked by Alysse on February 2, 2010* -
## Geometry

Equilateral triangle ABC and isosceles triangle DBC share side BC. If angle BDC= 34 and BD=BC, what is the measure of angle ABD? I don't know how to solve this questions, can someone guide me through?

*asked by Ana on November 26, 2014* -
## Chemistry AP

Each response gives a pair of solutions. Which pair of solutions should conduct electrical current equally well? 1. 0.10 M NH3 and 0.10 M NH4Cl 2. 0.10 M NaNO3 and 0.10 M HNO2 3. 0.10 M HBr and 0.10 M HF 4. 0.10 M NaCl and 0.10 M NaClO4 Please help... I

*asked by Zawng on November 7, 2013* -
## basic math

Identify the rate, base, and amount in the following applications. Do not solve the applications at this point. 22% of Shirley’s monthly salary is deducted for withholding. If those deductions total $209, what is her salary?

*asked by tea on April 7, 2010* -
## geometry

Equilateral triangle ABC and isosceles triangle DBC share side BC. If angle BDC= 34 and BD=BC, what is the measure of angle ABD? I don't know how to solve this questions, can someone guide me through?

*asked by Ana on November 26, 2014* -
## algebra

0.000027 ÷ 0.000009 Requirements: • Explain how to use scientific notation to solve the problem. • Describe how to divide numbers written in scientific notation. I am re posting again because i need more help then what i got because i don't understand

*asked by cheyann on October 13, 2015* -
## algebra 1

there are 5 rows of pictures with 3/16 inch of vertical space between pictures.Draw a diagram and label all the heights on your diagram then write and solve an equation to find the height of each picture

*asked by sara on November 1, 2010* -
## Math

Solve each equation to the nearest tenth and use the given restrictions. sin θ = -0.204 for 90 degrees < θ < 270 degrees. I don't get this. Is this supposed to be restricted to quadrants 2 and 3? Then it doesn't seem possible to get a value that will be

*asked by Anonymous on April 26, 2015* -
## math

Solve for x and y if 5^(x−y) = 625 and 3^(2x) × 3^y = 243. (note: I posted a similar question to this before, but this uses indices) (Also note: Answer is, x = 3, y = -1 ; 7, and the question if inputted into an online calculator, is incorrect.) Thnks

*asked by Anonymous on November 24, 2017* -
## 3rd grade math

i need help!! if the estimate is greater than or equal or 1,500, find the exact sum. if the estimate is less than 1,500, do not solve the problem. 867+734=1601 number model:_______________? thank you!

*asked by pat on January 4, 2010* -
## Quadratic Equations

The height of an object dropped from a 100-ft-tall building is given by h=-16t squared + 100. When will the object hit the ground? (Please provide steps/explanation to solve this problem.)

*asked by purpletree on March 29, 2009* -
## Math

Jean is seven years older than her brother Bob if he is three years older than their sister Mary. If the sum of their ages is 40 Siri how old is each you must set up an equation, solve and explain each step

*asked by Skielar on December 4, 2017* -
## math

Solve the problem. Give your answer to the nearest thousandth if necessary. A long-distance runner runs 3 miles south and then 7 miles east. How far is the runner from the starting point?

*asked by katelynn on November 20, 2009* -
## pre-algebra

I'm having a hard time with coming up with equations. Here's an example: Complete the equation of the line through (−8,−2)and (−4,6) Could anyone solve this and explain (as simple as possible) how you came up with the answer? I'm sorry if this was a

*asked by killjoy on May 16, 2019* -
## Physics

1. Does the center of gravity coincide with the fulcrum? Why? 2. why does a meter stick balance if the moments in one side equals the moment on the right side? 3. When do you solve for percent difference? Percent error?

*asked by help me please on April 6, 2016* -
## 4th grade Math

hello, I'm helping my son with his assignment but unsure if the answer is correct. Please help advise. Milton needs to find the product of two numbers. One of the numbers is 9. The answer also needs to be 9. How will he solve this problem? Explain. 3 x 3 =

*asked by Zack on November 3, 2011* -
## Chem

Determine the mass of iron heated to 85 Celsius to add to 54.0g of ice to produce water at 12.5 Celsius. The speciic heat of iron is 0.045J/g C What steps do I take to solve this problem? Thanks

*asked by Lindsey on November 19, 2009* -
## geometry

Find the equation of the line that passes through (−3, 2) and the intersection of the lines x+2y=0 and 3x+y+5=0. For the intersection, I got (-2,1) and for the equation i got y=x+3. but apparently those aren't the answer. Could you provide a way to

*asked by Anonymous on October 26, 2018* -
## math

my daughter is working on calculating how many triangles point up in equilateral triangle. This is her bonus question: solve this problem for an equilateral triangle with sides measuring n units each. I'm lost, help.

*asked by adrianna on November 17, 2010* -
## Algebra

The ages of three siblings combined is 27. The oldest is twice the age of the youngest. The middle child is 3 years older than the youngest. Write and solve an equation to find the ages of each sibling.

*asked by Random on October 8, 2018* -
## algebra

The Parker’s are installing a wooden fence in their backyard. They have 330 feet of wood. The length can be no more than 90 feet. Write and solve an inequality to find the maximum width of the fence.

*asked by ciara on February 25, 2014* -
## algebra

0.000027 ÷ 0.000009 Requirements: • Explain how to use scientific notation to solve the problem. • Describe how to divide numbers written in scientific notation. I am re posting again because i need more help then what i got because i don't understand

*asked by cheyann on October 14, 2015* -
## Calculus

h(x)= x + cos(ax), where a is a positive constant such that 0 < a < 4. For what values of a will h(x) have a relative maximum at x=1? So I found the derivative and got h'(x) = 1- asin(ax). Then I plugged in 1 for x and set the derivative equal to zero, so

*asked by ashley on May 1, 2015* -
## Geometry

W, R, and S are points on a number line, and W is the midpoint of point RS. For each pair of coordinates given, find the coordinate of the third point. Please correct me if I'm wrong! 1. R=4, S=-6 Answer: W=-1 2. W=-4, S=2 Answer: R=-10 *Could you please

*asked by Anonymous on September 6, 2014* -
## math

Each ticket to a school dance is $4. The total amount collected in ticket sales is $332. Write and solve an equation to find the number of students attending the dance.

*asked by robin on March 20, 2018* -
## Algebra

Please Help. How long, to the nearest tenth of a year, will it take $12,500 to grow to $20,000 at 6.5% annual interest compounded quartely? (Use the formula for compound interest with n compoundings per year to solve for t.)

*asked by Roger on December 3, 2010* -
## Chemistry

The amount of energy released by the combustiom of 100 g of C2H2 (g) is ______ MJ. 2CH2 + 5O2 ----> 4CO2(g) + 2H2O(g) ΔH= -2511.0 kJ Do I use ΔH = Hproducts - Hreactants? And if so how would that help me solve for the energy released?

*asked by Anonymous on June 22, 2016* -
## chemistry

if the rms speed of NH3 molecules is found to be 0.510 km/s what is the temperature (in Celcius)? can someone solve this using the formula c=((2.55*R*T)/M)^1/2 c is the speed r is 8.314 constant M is the molar mass of NH3 17.031

*asked by Henry on August 5, 2011* -
## Maths addition

In the addition problem on the right, different letters represent different digits and A is bigger than P. What three-digit number does EEE, the sum, represent? PA + PA + PA = EEE Just wondering if anyone would have a technique to solve this if not then

*asked by Ripley on February 5, 2017* -
## Pre Algebra

How could I solve this problem?: A lot measures 60ft by 100ft. The house on the lot measures 30ft by 50ft. What is the area if the lawn? This is about reasoning strategy: Use multiple strategies

*asked by Lily on June 11, 2008* -
## Seventh Grade Math

Use 6 digits from 1 through 7, each once, to make two 3-digit numbers whose sum is 670 and whose difference is 376. Give both 3-digit numbers in your answer. If I knew what I had to do, I could solve this problem. I don't know how to begin, though!!!!

*asked by Anonymous on November 2, 2010* -
## math

If the total bill at a restaurant, including a 15% tip, is $65.32, what was the cost of the meal alone? 1.15 X = $65.32 I am assuming that you can solve this equation for X (the cost of the meal alone). If you cannot, respond to this post with more

*asked by cheryl on March 19, 2007* -
## Math (Pre-Calc)

Use the Law of Sines to solve for all possible triangles that satisfy the given conditions. (If an answer does not exist, enter DNE. Round your answers to one decimal place. Below, enter your answers so that ∠A1 is smaller than ∠A2.) b = 74, c = 84,

*asked by Alyssa on March 13, 2015* -
## maths

Need help to know what to do: solve the equation 9/(x=7)=4/(x-3) My book tells me to cross multiply, then move all the terms in x and the terms without x on separate sides of the equation. then divide by the coefficient of x. How do i do this? I don't

*asked by Jane on March 8, 2011* -
## Algebra

I have been asked a question regarding inconsistency. How would I use these equations to solve the questions? x-y=5 2x = 2y+14 If you arrange your second equation this way 2x - 2y = 14 then divide by 2 you get x-y=7 compare this with your first equation

*asked by Sissy on May 11, 2007* -
## math

Of the first graders who were asked, one sixth like math best, two thirds like reading best, and 12 like science best. How many first graders were asked their favorite subject? Please provide a "Draw a Picture" strategy to solve the problem.

*asked by Anonymous on February 6, 2012* -
## 7th Geometry

We are using the Pythagorean rule and I'm a little confused... Solve each problem using a grid. Round your answer to the nearest hundredth. Dover is located at (1,2) and Goodlow is located at (5,7). How far apart are the 2 cities? My answer is 6.40... am I

*asked by Meghan on February 4, 2012* -
## Pre-Calculus

Use the Law of Sines to solve for all possible triangles that satisfy the given conditions. (If an answer does not exist, enter DNE. Round your answers to one decimal place. Below, enter your answers so that ∠B1 is smaller than ∠B2.) a = 34, c = 43,

*asked by Alyssa on March 13, 2015* -
## Java

Can someone please help me out!!!I included what I have so far.. *Purpose: Say that you owe the credit card company $1000.00. The company charges you 1.5% per month on the unpaid balance. You have decided to stop using the card and to pay off the debt by

*asked by Railly on November 26, 2007* -
## physics

The tallest volcano in the solar system is the 18 km tall Martian volcano, Olympus Mons. An astronaut drops a ball off the rim of the crater and that the free fall acceleration of the ball remains constant throughout the ball’s 18 km fall at a value of

*asked by Anonymous on October 1, 2011* -
## math

Ture or false questions: Your teacher gives a true-false pop quiz with 10 questions. Show that the number of possible outcomes for the sample space of possible sequences of 10 answers is 1024. I got false and the number is 182 but don't think I have the

*asked by mary on October 9, 2011* -
## English/Grammar Tutor Please !!!!!!!!!

As the public uproar over generic drug and off-patent, off-exclusivity branded drug price gouging heightens, state experts and patient activists in Maryland are lobbying for politicians to implement a law that would prohibit price gouging of important

*asked by Anonymous on November 30, 2017* -
## Math

Im trying to help my daughter with a question. I cant remember how. Please help!!! How do you solve 7 times the square root of 3 divided by the square root of 5.

*asked by Venus on November 30, 2008* -
## Algebra

Hi, I have had to factorise the equation x^2 + x - 30 = 0, which I think I have worked the answer out as x =-6, x =5? I now need to explain how I can use this answer to solve the equation 4x^2 +4x -120 =0 Any advice?

*asked by Trevor on May 12, 2010* -
## pHYSICS

iTS A HARD QUESTION. wHAT IS THE FORMULA FOR SPEED? sOLVE TWO SPEED PROBLEMS WITH A DIFFERENT MISSING PART OF THE FORMULA.

*asked by fahad on November 15, 2008* -
## Trigonometry

2cos^2(x) = 13sinx - 5 How do i solve for x? I think i have to use the sin^2x + cos^2x = 1, but I'm not sure how to use that. I thought about maybe doing 2(1-sin^2x) = 13sinx - 5 but then i get stuck. Any suggestions?

*asked by Savannah on January 16, 2012* -
## Science

Ball A, with a mass of 20 kg, is moving to the right at 20 m/s. At what velocity should Ball B, with a mass of 40 kg, move so that they both come to a standstill upon collision? How do I solve this?

*asked by D on February 28, 2018* -
## Algebra

help me solve this exponential problem P to the 3rd power times q 5 over 2 all over q to the 2nd power times r to the negative 6.

*asked by jeremy on April 24, 2012* -
## implicit diffirentation

y4 + xy = x3 – x + 84 (a) Find dy/dx at the two points on the graph with x-coordinate 0. Hint: Set x=0 in the equation and solve for y to find the two points.

*asked by pav on October 15, 2010* -
## precalculus

graph r = cos 5Θ + n cos Θ, 0 ≤ Θ ≤ π For the integers n = -5 to n = 5. I do not understand this question at all. Can you use a similiar example to explain how I would solve this question?

*asked by Anonymous on December 12, 2016* -
## math

{y-2}/(a^2-5a+6)=(a+1)/(a-3)-(a+2)/(a-2) How can I solve for y in terms of the other variables??? I tried many times, but I just get y=6,can't express y in terms of variables. Can anyone please correct me or teach me?THANKS A LOT!

*asked by Selina on February 14, 2008* -
## Algebra

(x+4)-5=43 how would you solve that. because i tried it and i got 28 but 28+4=32 then 32-5 doesnt equal 43. First add 5 to both sides to get rid of the -5... (x+4)-5+5=43+5 giving--> x+4=48 Then subtract 4 from both sides... x+4-4=48-4 giving--> x=44

*asked by Sam on January 20, 2007* -
## Math

How do you solve the following question? **QRST is a rectangle. If m

*asked by yonoodles on March 8, 2015* -
## algebra/trig

1. which number below is irrational? a)√4/9 b) √20 c)√121 Why is the number you chose irrational? 2. express in simplest form: √48-5√27+2√75 3. solve for x: (√x+2)-3=0

*asked by Carla on August 7, 2012* -
## St.therese'sSchool padrauna

Ravish Saves 15 % Of his pocket money which is Rs 500 per month. How much is his pocket money? How can to solve this Question

*asked by Anonymous on November 3, 2015* -
## Logarithms

if log base 10 of 2 = .301 then what is log base of 10 of 2000? I know how to solve with a calculator but I'm having a hard time doing it without one.

*asked by Sam on October 14, 2012* -
## check math

Here are my answers. Can you check if I got the right answers? Thank you! Solve for z: 4x+10yx=0 z=-2x/5y y^2+3yz-8z-4x=0 z=(-y^2+4x)/(3y-8) there was no z in your first equation, from you answer I can tell it should have been 4x + 10yz = 0 If so, the

*asked by Anonymous on August 8, 2007* -
## math

how do i solve the sum of the first n even positive integers is h. the cum of the first n odd positive integers is k. determine the value of h-k, in terms of n

*asked by alicia on May 31, 2010* -
## geometry

im trying to explain to my brother how to do graph this problem put im not sure how to solve it either. (x-3)^2+(y+5)^2=9 so if someone can explain how to graph this it would be greatly appreciated

*asked by Adam on September 3, 2008* -
## Math 2

John solved 1/5 divided by 10 by using a related multiplication expression. Which multiplication expression did she solve? Choices are A. 5 *10 B. 1/5 *10. C. 5* 1/10 d. 1/5 *1/10

*asked by Allison on May 14, 2014* -
## Math

Pls help .[1] Solve the eguation 4*=28. [2] change 1/20 to decimal [3] change 60% to a common fraction . Pls i need the solving thank you

*asked by Bright on February 23, 2012* -
## Calc

When you are solving for the point of intersection between planes do you follow the same steps when solve for the point of intersection between lines?

*asked by C on October 17, 2010* -
## math

solve 2x3 -+4r2 if r=1 and s=5 is it 25x25x25=15625 42x42= 1764 15625-1764=13861 I think I got it

*asked by lost on September 18, 2015* -
## chemistry

How you solve P4(s)+5O2(g)------>P4O10(g) .if 2.50 grams of phosphorus is ignited in a flask how many grams of P4O10 are formed ?

*asked by Anonymous on April 1, 2014* -
## CALC 2a

f(x)=x^3-3x^2-3x-8/(-3x^2-4x-6) Find the equation of the non-vertical asymptote. What is the smallest value of x at which f(x) intersects its non-vertical asymptote? please help i have no idea how to solve this thanks!

*asked by uci student on March 7, 2012* -
## Algebra

Find the constant of variation k. yvaries directly with x; y=400 when x=1000 y = k x 400 = k * 1000 Solve for k

*asked by Linda on May 14, 2007* -
## solve using unit rates

In repeating musical pattern, there are 56 beats in 7 measures. How many measures are there after 104 beats? How do I solve this problem?

*asked by Misti on November 3, 2014* -
## Math Help!

Write a percent equation that can be used to solve the following problem:820 is 20% of what number? A. n=0.2x 820 B. 820=0.2x n C. 0.2= nx 820 D. none of these Is the answer A?

*asked by Callie on November 25, 2014* -
## sequences and series

how do i solve the sum of the first two terms of an arithmetic sequence is 16. the sum of the second and third term is 28. determine the first three terms, algebraically

*asked by alicia on May 31, 2010* -
## algebra - inequalities

Solve the inequality. 1/4x < 0.325 A. x > 1.3 B. x > 0.08125 C. x < 1.3 D. x < 0.08125 do i divide or multiply here? i think it's divide, in that case, i'd answer C.

*asked by orpheus on November 20, 2013* -
## trigonometry

Write the quadratic function whose zeros are: 1. 2+square root of 5, 2-square root of 5 2. 3+7i,3-7i 3. 5±i Please tell me how to get them. I have no clue on how to solve them.

*asked by james on August 27, 2014* -
## Chemistry

For H2(g) + Br2(g) -> 2HBr(g) k=64

*asked by Hannah on February 29, 2012* -
## Trigonometry

Write the quadratic function whose zeros are: 1. 2+square root of 5, 2-square root of 5 2. 3+7i,3-7i 3. 5±i Please tell me how to get them. I have no clue on how to solve them.

*asked by Glenn on August 27, 2014* -
## algebra

how do I solve 3/8x+5=25 First subtract 5 from both sides. first you have to subtract 5 from 25 so you will have 3/8x=20 then you have to multiply by the reciprocal so you multiply 20 x 8 and you get 160 divided by 3 and you get 53.3 repeating =x

*asked by Anonymous on October 19, 2006*

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