# 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 466
1. ## Chemistry

which of the following substances (with specific heat provided) would show the greatest temperature change upon absorbing 100.0 J of heat?

asked by Bryson on April 5, 2010
2. ## math

an oil drum is 8ft high and 2 ft in diameter if the drum is half full how much is in cylinder. please show explanation

asked by Faith on April 22, 2012
3. ## math

student got 25 questions correct did not pass,2nd attempt got 36 correct what was percent increase show how solved

asked by Anonymous on December 5, 2012
4. ## Math

A piano has 88 keys. Show with numbers the probability of hitting a particular key if you shut your eyes and strike one key.

asked by Tyler on April 3, 2009
5. ## Physics

Show that the kinetic energy of an object can be written in terms of the momentum as KE = p2/2m. Help ASAP please. Step by step to get the answer

asked by Anonymous on November 6, 2016
6. ## Math

A rectangular prism has a volume of 7.875 m to 3 cube and a height of 3.5m . What is the area of the base of the prism? Please show me each step to get this. Please

asked by Cheyenne on May 3, 2018
7. ## Algebra

Explain how to factor the following trinomials forms: x2 + bx + c and ax2 + bx + c. Is there more than one way to factor this? Show your answer using both words and mathematical notation.

asked by Tammie on October 4, 2012
8. ## Math

5lbs 4oz to metric weight. Show all steps. Please help, I don't understand this cause I'm from Canada so we don't use lbs or oz. please help :)

asked by Michael on January 23, 2014
9. ## Calculus

Let f(x)=αx^2+βx+γ be a quadratic function, so α≠0, and let I=[a,b]. a) Check f satisfies the hypothesis of the Mean Value Theorem. b)Show that the number c ∈ (a,b) in the Mean Value Theorem is the midpoint of the interval I.

asked by Makenna on March 22, 2017
10. ## Chemistry

which of the following substances (with specific heat provided) would show the greatest temperature change upon absorbing 100.0 J of heat?

asked by Bryson on April 5, 2010
11. ## Physics

Find the resultant of these two vectors: 2.00 * 10^2 units due east and 4.00 * 10^2 units 30.0degrees north of west. please SHOW me how to do this

asked by y912f on February 5, 2009
12. ## Maths

the length of room is twice its breadth. if the area is 242 square meters then find out it's breadth a) 11 b) 10 c) 12 d) 9 show ur workings?

asked by Son huw on June 11, 2019
13. ## Algebra 1b

Explain how to factor the following trinomials forms: x² + bx + c and ax² + bx + c. Is there more than one way to factor this? Show your answer using both words and mathematical notation.

asked by Yolonda on November 29, 2012
14. ## amath

The roots of the quadratic equation x^2-mx+n=0 ,where m and n are integers ,are a and 1/4a. (i)Find the sum and product of its roots (ii)show that 4m^2=25n How to do part 2 ?

asked by Candy on June 3, 2013
15. ## math

*simplify by combining like terms, if possible. then, remove the GCF and factor fully. 2x^2-21x+36+x^2 =3x^2-21x+36 ...i'm not sure what to do after that, could you help and show the steps please

asked by Anonymous on April 27, 2010
16. ## algebra

how to multply and divide rational expressons is their a free website i can go on that will show it step by step and give me an answer???

asked by cali on June 1, 2011
17. ## English

Don't laugh at him. He looks serious. -------------- In the first sentence, does 'laugh at' mean 'ridicule' or 'to make the sounds and movements of your face that show you are happy'?

asked by rfvv on October 14, 2014
18. ## chemistry

The Kw of water varies with temperature. Calculate the pH of water at 46⁰C with a Kw = 1.219 x 10-14. Show all calculations leading to an answer.

asked by allexelle on April 6, 2015
19. ## Geometry

I need help simplifying the radical (IN RADICAL FORM ONLY) What's the square root of 224? Can you please show how you got the answer so I can learn how to do it myself next time please.

asked by GummyBears18 on March 1, 2017
20. ## statistics

the response to a question has three alternative a, b, c, a sample of 120 responses provides 60 a, 24 b, 36 c. show the frequency and relative frequency distributions

asked by susu on September 8, 2016
21. ## math

a cyclist is travelling with an average velocity of 5.9m/s [w]. what will be his displacement in 1.5 h? please show steps to answer-I tried but couldn't find the answer :(

asked by ash on December 1, 2014
22. ## Probability

How could picking three dates at random in the month of April be simulated using a random digit table? (Please show and explain)

asked by Lori on November 23, 2010
23. ## childhood education

what does reseach show about the child;s relationship with the primary parental figure when the child has additional attachments to other people

asked by carol on May 13, 2011
24. ## Business/ social studies

_______ is when a product is included in a show or movie. a.product placement b.a commercial c.promotion d. institutional advertising

asked by StorySecrets on May 4, 2017
25. ## math

a piano has 88 keys.show with numbers the probability of hitting a particular key if you shut your eyes and strike a key.

asked by gabriel on March 12, 2012
26. ## math

what is the dollar value of ending inventory if there were 17,000 units on hand on December 31? January 1 beginning inventory 5,000 units @\$0.89 February 15 purchase 10,000 units @ \$0.69 April 15 purchase 2,000 units @ \$1.09 July 15 purchase 4,000 units @

asked by Lucy on May 18, 2008
27. ## Math

I need someone to check and go over my answers to make sure they are correct and if not could you go over them with my on why and how to solve correctly?? Thank you much appreciated.. Add. -4/5 + (9/20) = 5/25 1 + (-2) + 3 + (-4) = 10 5/3 + (-4/3) + 5/3 =

asked by Anonymous on September 1, 2009
28. ## Human & Social Biology

(1)discribe how social biology may help to solve the problem o (a) stravation (b) Poor sanitation

asked by Marion on September 9, 2009
29. ## math

How to solve a linear equation using the equality properties. Help explain in simple language

asked by katy on February 21, 2012
30. ## History

how did some people hope to solve the problem of california’s isolation from the rest of the country?

asked by Annie on May 31, 2011
31. ## math

can someone please help me solve this problem......-3x=3/2 3/2 is a fraction. i tink the answer is -2 while my friend thinks it is -.5 who is rite?

asked by Ann on October 14, 2007
32. ## Algebra2

Can someone EXPLAIN to me how to solve for x. Please don't just give me an answer because I won't learn anything from that. sq root of (x+6) = x

asked by Juan on August 14, 2011
33. ## differential Equations

solve the initial value problem and find the interval of existence... cos(y) dy/dt = -t sin(y)/ (1+t^2) , y(1)=pi/2

asked by George on February 8, 2018
34. ## Math

Solve the equation for solutions in the interval 0 < x < 2pie those are supposed to be less than or equal too signs

asked by Amy on September 3, 2008
35. ## College Algebra

Solve the equation by expressing each side as a power of the same base and then equating exponents. 3 (6-3x) = 1/27 {9} {1/9} {-3} {3}

asked by Daniel on November 5, 2008
36. ## algebra

I am not good at math at all and my teacher has given me a very hard question about solving for the indicated variable. p=s+t+u solve for u Help please

asked by Kita on February 16, 2012
37. ## Math

how do you solve this problem??? Write each rational number in the form a/b where a and b are both integers and b is not equal to zero... Ex: -2.3 would it be -2 3/10???

asked by Anonymous on September 18, 2007
38. ## Calculus

Solve the separable differential equation 10x−6ysqrt(x^2+1)dy/dx=0. with the initial condition y(0)=4.

asked by Robin on November 18, 2013
39. ## algebra 2

find the points of intersection of the following algebraically y=2^x + 4^x y=2^x+1 - 4^x+1 I set them equal to each other but not sure if you use logs or what to solve it

asked by jonathan on August 10, 2010
40. ## Algebra 2

Solve square root of 79-5x =6x+4 (Keep your answers in simplified improper fraction form)

asked by Izzy on February 1, 2015
41. ## Math-Algebra

how do you find the answer to x+2 = (square root) -6x-20. If you could write out how to solve it in steps it would be appreciated!

asked by AllisonF on December 12, 2011
42. ## Calculus

Find the point at which the line +t intersects the plane 4x-y-z=73. What process do i take to solve this problem?

asked by Michael on September 10, 2007
43. ## 7th grade

how did some people hope to solve the problem of california's isolation from the rest of the country

asked by marcus on March 8, 2010
44. ## arithmetic

Write and solve an expression to find the nth term of each arithmetic sequence... 3,7,11,15 n=8

asked by Olyvea on May 17, 2011
45. ## Math

/Users/szeringue/Desktop/SCAN0001.JPG Can you help me solve this problem, Please AB=27 BC=x CD=4/3x AD=x AC=? How do I get what AC equals?

asked by Aaron on December 2, 2010
46. ## MT

Identify 2-3 business issues and provide an explanation of why technology cannot be used to aid or solve them.

asked by Katie on January 12, 2011
47. ## Math

Solve the inequality algebraically: 5/x-3 + 3/2-x > 1 (greater then or equal to one) I know how to do it in theory but I keep getting the answer of just y=2 and I know that can't be right. Help is really appreciated! Thank you

asked by Laura on January 24, 2018
48. ## calculus

Using 4x^2 - 9y^2 = 36 Find y by implicit differentiation and then solve the equation explicitly for y and differentiate to get y' in terms of x.

asked by Katie on April 29, 2013
49. ## Finding polynomial from zeros

How to find the polynomial degree 2 and zeros are (1+i) & (1-i) I would like to see the steps to solve this. Thanks. If those are the roots, then the following are factors: (x-1-i)(x-1+i)

asked by Jen on January 31, 2007
50. ## Maths

How do we solve for x? 5^(2x+1) = 6^(x-2) My first attempt was to take the expressions of the both sides of the equation sign to one number ( as in 5^x = 5^2x) , but here I don't see a way to that too.

asked by Ashley on February 22, 2019
51. ## Math

I need someone to check and go over my answers to make sure they are correct and if not could you go over them with my on why and how to solve correctly?? Thank you much appreciated.. Add. -4/5 + (9/20) = 5/25 1 + (-2) + 3 + (-4) = 10 5/3 + (-4/3) + 5/3 =

asked by Anonymous on September 1, 2009
52. ## Math (pre-calc)

log2(log4x) = 1 Solve the equation The bases are 2 and 4 respectively, I'm just not sure how to signify that on the keyboard. Thank you so much, help is really appreciated.

asked by Laura on January 25, 2018
53. ## math

5 coins are dropped on the floor. find the probability that they will all land heads up. please help me solve!

asked by pactrick on April 10, 2009
54. ## math

Is anyone familar with Sharon Wells Math? How do you solve a word problem using their program?

asked by George on October 6, 2008
55. ## math

Need help. solve 5 - y/3 for y= -3, 25 - y = 7 3y + 8 = 3, 5 - 3y =7, y/3= -9. Not sure when to use opposite sign or divide to move to other side of equation? 3y + 8 = 3 - 8 -8 3y = -5 y = -5/3 y = -1 2/3 Is this correct?

asked by joshuah on June 1, 2010
56. ## math

when solving using multiplication principle -13x=273 how do i solve plus perform check

asked by Johnson on November 19, 2011
57. ## maths PLEASE HELP

how do you solve this for x i keep getting stuck with x in too many places 4^x -6(2^x) -16 =0 i assume you have to use ln but i think im missing a step because i just get something which is more complicated than what you start with thank you

asked by jessie on May 24, 2010
58. ## Trig

Use trigonometric identities to solve the equation csc^2x -(√3+1)cotx+(√3-1)=0 in the interval [0, 2pi]

asked by Melissa on May 9, 2014
59. ## Maths

solve this partial differentiation and find if maximum,minimum or saddle. f(x,y)=x^3-y^3+6xy...

asked by George on December 2, 2015
60. ## Maths

S + C + H = 100 40S +65C + 2H = 3279 How do you solve these type of equations. I'm so confused!

asked by jack on April 6, 2017
61. ## math !!!

2cosx + 1 = 0 solve the equation for solutions in the interval : 0 < x < 2pie those are less than or equal too signs

asked by Amy on September 3, 2008
62. ## Calculus

Using 4x^2 - 9y^2 = 36 Find y by implicit differentiation and then solve the equation explicitly for y and differentiate to get y' in terms of x.

asked by Katie on April 29, 2013
63. ## math

what formula equation is this? CH4 + 02 ---> CO2 + H2O (someone help! I dont know how to solve this) HELP ASAP!

asked by (ﾉ◕ヮ◕)ﾉ*:･ﾟ✧ on March 1, 2019
64. ## math

Solve each equation by using the Quadratic Formula. Round to the nearest tenth if necessary. 1.6x2 + 2x + 2.5 = 0

asked by Sally on April 27, 2016
65. ## algebra 1

8x-(2x+7)=23I am completely drawing a blank as to how I am suppose to solve this. Can someone offer the first step?

asked by Cynthia on November 16, 2010
66. ## math

Solve for time. Principle - \$400 / Int 5% / simple interest \$100

asked by Anonymous on January 13, 2013
67. ## Algebra

Find an equivalent inequality with absolute value #1: -5 < y < 5 #2: x < -4 or 4 < x I'm not sure at all how to solve this problem. Please walk me through the process. Thanks!

asked by Katie on February 3, 2009
68. ## Trigonometry

Solve each triange given the indicated measures of angle and sides b=43degrees y=36 degrees a=92cm

asked by Ann on August 16, 2012
69. ## Math

Solve the equation by factoring, by finding square roots, or by using the quadratic formula. 3(x+4)^2= -27

asked by Lilly on November 14, 2011
70. ## algebra

Solve each quadratic by using the wuadratic formula and round the answer to the nearest hundredth, if possible. 1. x^2 = 9 2. 0 = 3x^2 - 8

asked by Clammyson on January 19, 2011
71. ## calculus

Solve for all real values of x. 3tan^2x = 3^1/2 tan x I have no idea how to approach this problem.

asked by Tracy on January 24, 2010
72. ## Calc

- What is, lim n--> ∞ nΣ(k=1) (2+k*(5/n))^3 * 5/n as a definite integral. - Solve d/dt x^4∫2 tan (x^2)dx - What is the area bounded by the curves x = y^2 - 4y and x = 2y - y^2?

asked by Jameel on July 15, 2018
73. ## Pschology 202

The psychological term for mental activities in which we think, solve problems, and use language is called?

asked by Anonymous on March 29, 2015
74. ## Math

Solve each inequality y+5>7 The arrows are supposed to have lines under them but I can't figure out how to put them. A. y12 Is the answer A?

asked by Gwen on September 18, 2014
75. ## Math

The graphs of 5x-3y=35, 7x-3y=43, and 4x-ay=61 all intersect at the same point. Find the value of "a". Do I solve the systems and then plug in? I am not sure haha.

asked by Bella on May 27, 2015
76. ## Algebra (please help!)

Find an equivalent inequality with absolute value #1: -5 < y < 5 #2: x < -4 or 4 < x I'm not sure at all how to solve this problem. Please walk me through the process. Thanks!

asked by Katie on February 3, 2009
77. ## math grade 8 please help!!!

1/5 of 10% of 200g how would i solve this plz explain!! (one over five of ten percent of two-hundred grams)

asked by anonymous on November 23, 2013
78. ## math

How would I solve this: Mr. Merrill has 3 times as many nickels as dimes. The coins have a total of \$1.50. How many of each coin does he have?

asked by katy on April 20, 2013
79. ## Algebra

/Users/szeringue/Desktop/SCAN0001.JPG Can you help me solve this problem, Please AB=27 BC=x CD=4/3x AD=x AC=? How do I get what AC equals?

asked by Sam on December 2, 2010
80. ## Math

Write and solve a real- world problem that can be solved using the expression 3/4 divided by 1/6?

asked by Fred on September 22, 2016
81. ## algebra

TRANSLATE THE FOLLOWING SENTENCE INTO AN EQUATION DO NOT SOLVE. tHIS IS WHAT I GOT Ten more than three times a number is 130.

asked by Angela on November 6, 2011
82. ## TSU Chemistry

Which of the following reactions needs to be reversed to solve for the Heat of Neutralization between Hydrochloric Acid and Ammonia

asked by Pam on March 29, 2010
83. ## math

Solve for time. Principle - \$400 / Int 5% / simple interest \$100

asked by Anonymous on January 13, 2013
84. ## math

solve this equation a divided into 7=20 the actual problem has the divide sign. I got a=20*7 so a=140

asked by Sara on October 16, 2014
85. ## Calculus

Solve the first-order initial value problem using half angle formulas {y'(x)= 1 + sin^2 x y (0)= -7

asked by Mina on May 14, 2008
86. ## Math

Solve the equation by expressing each side as a power of the same base and then equating exponents. 2x = 16

asked by Anonymous on July 9, 2012
87. ## Algebra 2

Solve x^4-4x^3+4x^2-9=0 given that 1+i sqrt2 is a root. I need all of the steps. I need this ASAP because this assignment is due tomorrow. Thanks

asked by Brandon on May 25, 2011
88. ## Geometry

What type of quadrilateral is formed by connecting the points (0,0), (3x,b), (18x,b), and (15x,0)? How would I solve this?

asked by Isabelle on June 24, 2014
89. ## math

Larry borrowed \$800.00 at 6% for one in a half years?Explain and solve the problem.

asked by Eilundra on November 20, 2015
90. ## math

x^2= 6x+11 solve the quadratic equation for values of x expressed in simplest radical form

asked by Amy on September 11, 2007
91. ## Algebra

Can someone help me solve this problem: Graph the line containing the given pair of points and find the slope. (5,2),(-4,-5)

asked by Bettie on August 20, 2010
92. ## chemistry

can somebody please tell me how to solve this, how can i find the saturation concentration of oxygen in water at 10'C in atmospheric pressure.?

asked by Anonymous on October 18, 2013
93. ## 2nd grade

Please explain how you solve these problems. It is greater than 43 and less than 52.If you add the digits,the sum is 8? This us confusing.

asked by Kaiya on October 5, 2010
94. ## Geometry Please Help

/Users/szeringue/Desktop/SCAN0001.JPG Can you help me solve this problem, Please AB=27 BC=x CD=4/3x AD=x AC=? How do I get what AC equals?

asked by Jake on December 2, 2010
95. ## math

solve the equation giving your answer in correct to 2 decimal places 5x square+4x+1=3(1-3x)

asked by may on October 21, 2010
96. ## algebra

Q:solve using multiplication principle then graph -15x > -75 A: {x|x > 5} when graphing the circle is open on the 5 and goes to the right

asked by Carmen on October 4, 2008
97. ## math

how to solve for x in terms of the other variables in this equation?Can anyone please teach?I got no idea...Thanks a lot! 3cx+8d^2=2d(2x+3c)

asked by Malisa on February 14, 2008
98. ## Math Help

Solve the proportion. Where necessary, round to the nearest hundreth. 9/10=x10 A.9 B. 90 C. 10 D. 1000 Is the answer A? Thank you

asked by callie on November 20, 2014
99. ## Formulas and Literal Equations

Have not a clue please help to figure this one out: P-Q=-R, for Q Do you wish to solve for Q? If so, subtract P from both sides. P-P-Q=-R-P Combine terms. -Q=-R-P Multiply by -1 Q = R+P

asked by TN on January 27, 2007
100. ## Math

/Users/szeringue/Desktop/SCAN0001.JPG Can you help me solve this problem, Please AB=27 BC=x CD=4/3x AD=x AC=? How do I get what AC equals?

asked by Aaron on December 2, 2010