# 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

91,330 questions, page 67
1. ## Algebra

State whether the equation is true, false, or an open sentence. Show your work. 3(2 + -8) = 3(-6 + 12) x + 5 = 22

asked by Anon on May 28, 2015
2. ## math/algebra

Please show work Find the quotient and remainder when the dividend is 262 and the divisor is 11.

asked by Anonymous on May 28, 2012
3. ## Calculus

∫ x^3 √(16-x^2) dx evaluated between [0, 4] I know this is solved using trigonometric substitution, but I'm not sure how to work it. Please show steps so I will understand.

asked by Nick on March 14, 2015
4. ## math

calculate the following, leaving your answer as a fraction (lowest) or in decimal. Show your work 4(2+1)² -------- 3(1)²

asked by ios7 on September 18, 2013
5. ## Math

Simplify each expression and state any non-permissible values. ( 3 marks - show your work) x/(x^2-3x-4) - 4/(x+1)

asked by Alex on January 9, 2015
6. ## Math

Simplify each expression and state any non-permissible values. (4 marks - show your work) (x^2-2x)/(x+1) x (x^2-1)/(x^2+x-6)

asked by Alex on January 10, 2015
7. ## Math

asked by Alex on January 8, 2015
8. ## Math

Simplify each expression and state any non-permissible values. (4 marks - show your work) x^2-2x/x+1 x x^2-1/x^2+x-6

asked by Alex on January 8, 2015
9. ## Pre-Calc Help!

I really need help with this question. Thanks! Find the zeros of the function algebraically. Be sure to show all work. f(x)=x^2-8x+15 --------------- 10x

asked by Lori on September 19, 2014
10. ## Geometry

To the nearest tenth, find the perimeter of ΔABC with vertices A(2,4), B(-2,1) and C(2,1). Show your work.

asked by Crystal on July 3, 2017
11. ## Math

Simplify each expression and state any non-permissible values. ( 3 marks - show your work) x/x^2-3x-4 - 4/x+1

asked by Alex on January 8, 2015
12. ## physics

What is the magnitude of the electrostatic force on a +5 C harge 1.75 m to the left of a -2.5 C Charge? (show your work)

asked by Mandy on May 14, 2013
13. ## Math

asked by Alex on January 9, 2015
14. ## algebra

find each product metally using the distributive property i know for 4 (10.2) i do this = 4 (10 + 2) = 4 (10) + 4 (2) = 40. + .8 = 40.8 but I am not sure how to show work on on following 2 problems: 11.6 (9) and 3.4 (5)

asked by marko on September 26, 2011
15. ## math

Simplify the rational expressions. State any excluded values. Show your work. 8.3x-6/x-2 9.x-2/x^2 +3x-10 please.

asked by Alex on November 28, 2017
16. ## Calculus

For what value(s) of r is the series the summation from n=1 to infinity of 1/(n^r+3) convergent? a) r > -2 b) r > -1 c) r ≥ -2 d) All values of r Please can you show me your work with the answer? Thank you very very much

asked by Alice on April 17, 2019
17. ## calculus

Find the derivative of the function. y=cos((1-e^x)/(1+e^x)) Please show all work and explain. I am very confused

asked by Anonymous on October 5, 2011
18. ## geometry

M is the midpoint of Symbol for Segment A B.. Find the coordinates of B given A(7,-2) and M(10,10). Show your work for credit

asked by BLAH on September 28, 2010
19. ## algebra

divide the fractions x+3 6 _______ divided by ____ xcubed x-3 show work please

asked by jaimecarlon on April 5, 2015
20. ## math

calculate the following, leaving your answer as a fraction (lowest) or in decimal. Show your work 8(2+3² --------- 2(5)²

asked by ios7 on September 18, 2013
21. ## algebra

asked by Orren on March 6, 2012
22. ## math

Subtract.show complete work (2x8 – x3 + 4x2 + 5) – (8x7 + 8x3 – 4x)

asked by AJA on June 21, 2011
23. ## Math

Simplify each expression and state any non-permissible values. ( 3 marks - show your work) x/ x^2-3x-4 - 4/x+1

asked by Alex on January 7, 2015
24. ## reactions

if you have 66.6g NH3 how many grams of F2 are required for a complete reaction? PLEASE SHOW ALL WORK AND/OR STEPS!!!!

asked by Anonymous on February 7, 2010
25. ## algebra

Write a slope intercept equation for the line that passes through (2,-7) and (4,-13) Please show work,

asked by sherry on March 19, 2012
26. ## fractions/math / Help!

I need help with a couple of questions 8 3/7-2 1/2 can u show the work and what and how to write the prime factorization of 93 and 425

asked by Rian on August 12, 2014
27. ## algebra

find all complex zeros for the following polynomial function please show all your work f(x) = x^3 - 125 ????????

asked by sue on December 9, 2011
28. ## algebra mental math distributive property

find each product mentally using the distributive property i know for 4 (10.2) i do this = 4 (10 + 2) = 4 (10) + 4 (2) = 40. + .8 = 40.8 but I am not sure how to show work on on following 2 problems: 11.6 (9) and 3.4 (5)

asked by MARKO on September 26, 2011
29. ## Carr Middle School

Math 601 divide by 57. I need to show all the work for this long division problem.

asked by Makayla on September 1, 2013
30. ## Math #2

Can you show me the work to get these answers also? 1.Given g(x)=x^3+5x^2+6x+30,find: a. All real/complex zeros. b. All x-intercept(s),if any.

asked by Jeff on December 8, 2013
31. ## precal

For the given functions f ,g and h, find f o g o h and state the exact domain of f o g o h. Please show all of your work. F(x)=inx g(x)=/x/-7 h(x)=5x+6

asked by Loura on February 4, 2012

How do you show work for this problem, in a percent equation form?~ \$3680 at 6.75% for 2 1/4 years

asked by jordan on January 8, 2012
33. ## Chemistry

Propose buffer components to hold a pH of 3.5, let the acid have a concentration of 0.1 M show all work

asked by Roderick on April 21, 2013
34. ## college algebra

determine the quadratic function f whose graph is given. the vertex is (1,-3) y intercept is -2 please show work so i can see how this is done, thank you!

asked by alli on August 19, 2012
35. ## Chemistry

Propose buffer components to hold a pH of 9.5, let the base have a concentration of 0.1 M show all work please

asked by Roderick on April 21, 2013
36. ## Algebra I

Could someone please help with these problems? 4x squared-5x + 3 if is a.3 b. 0.3 Please show me the work invovled on getting the answer, my teacher requests it. Thank you.

asked by Jillian on August 21, 2008
37. ## Algebra

I also needed help with this problem to: 8 divided by 4 times 2 - 7 + 3 Again could you please show me the work involved in getting the answer. Thank you.

asked by Jillian on August 21, 2008
38. ## Math

Can you show me how to work this out? Tom and 7 friends want to share 2 liters of milk equally.

asked by Rocco on January 16, 2014
39. ## algebra 2

find all the REAL square roots of a.)0.0064 b.)-0.0081 SHOW WORK PLEASE

asked by lexi on March 1, 2018
40. ## Pre-Algebra

Use the formula d = rt. Find t for r = 46.6 m/h and d = 456.68 m. Show your work. This question is not multiple choice

asked by Gabriella on October 29, 2014
41. ## Algebra 1

Write the equation of the line that passes through point(-6,14)with a slope of -3. show the work

asked by Anonymous on September 25, 2007
42. ## Pre-Calculus

Locate the foci of the ellipse. Show your work. x^2/36+y^2/11=1 c^2=a^2-b^2 c^2=36-11 c^2=25 c= ± sqrt25 c= ±sqrt5*5 is this correct?

asked by Liz on June 2, 2016
43. ## math

find the length of a side of a square whose diagonal is 36 inch show all work

asked by lisa on April 28, 2012
44. ## math

find an equation of the linear function f using the given information. please show all steps and work f(-1)=1, f(1)=-2

asked by Tristan on September 7, 2010

find an equation of the linear function f using the given information. please show all steps and work f(-1)=1, f(1)= -2

asked by Tristan on September 7, 2010
46. ## Math

Which of the following CANNOT be the average ( arithmetic mean) of four positive even integers? a) 1 b) 2 c) 6 d) 9 e) 17 ( please explain or show work. It will help me understand it better! Thanks)

asked by Sarah on August 15, 2012
47. ## Calculus

Given x+xy+2y^2=6 find the coordinates of all other points on this curve with slope equal to -1/3. Please show work.

asked by Lindsay on December 10, 2009
48. ## Algebra 2

Let f(x) = 3x^2 – x + 2 and g(x) = 5x^2 – 1. Find f(g(x)). Show each step of your work. I got 75x^4 -35x +6 If that is wrong can you correct me. Thank you!

asked by Sanjay on April 8, 2017
49. ## calculus

Given x+xy+2y^2=6 find the coordinates of all other points on this curve with slope equal to -1/3. Please show work.

asked by Mark on December 10, 2009
50. ## Pre-Cal

Simplify and show work: [(X^(2)+3)^(1/3)](-1)(x^(-2))+[1/3(x^(2)+3)^(-2/3)](2x)(x^(-1)) My answer key says that it's this but I have no idea how to get to it. I've tried 4 times already and failed each: [-(x^(2)+9)]/[(3x^(2))(x^(2)+3))^(2/3)]

asked by Dom on June 1, 2016
51. ## chemistry

How many grams of CO2 are produced when 11.47 moles hexane combust? Show work please

asked by sarah on March 31, 2015
52. ## algebra

linear equations y=192+0.04y I have no work to show has I don't know where to start

asked by slynn on October 21, 2016
53. ## Chemistry

I realllyy need help with this: 39. Find the formula mass for AI2S3. Show your work. (The 2 and 3 are small) Thanks -MC

asked by mysterychicken on October 26, 2010
54. ## Chemistry/math

Convert 2.4 atm to kPa. Does this represent standard pressure? Show all of the work please Thank you!!

asked by Jessica on September 17, 2018
55. ## chemistry

What is the percentage of water in the hydrate CoCl2 • 6H2O? Show work I'm confused whether it's 52.17% or 45%

asked by help pls!!!!!!!! on May 25, 2018
56. ## precalc

write 196x^2-256y^2+17=12561 in standard form, show work.

asked by 95 on December 13, 2011
57. ## chemistry

matts moped holds 1.9 gal of gas how many milliliters is that show work

58. ## maths

find the range and the standard deviation of the prices of backpacks, show all work,\$11.99,\$8.84,\$16.98,\$9.99,\$10.45,\$10.86,\$11.99

asked by osa on May 28, 2013
59. ## Chemistry

What is the threshold energy of Chromium? I know the answer but i need to show work and through all the equations to get done i get lost. So can someone help me.

asked by Casey on October 12, 2011
60. ## Math (Algebra/Pre-Algebra)

What is the 23rd term in the arithmetic sequence: 11, 14, 17, 20...? All I need is the formula to find the it because I have to show work. Thanks.

asked by Samantha on June 4, 2009
61. ## Pre Calc

Verify the following identity: sin(x)*cos(x)*(cot(x)+tan(x))=1 show work

asked by Justin on July 5, 2011
62. ## Trig

Determine the roots of the function f(x)=-2cos(3x)-1. Can you please show all the work so it is easier to understand, thank you!!

63. ## Physics

What is the smallest a flat mirror can be while still being able to see your full reflection? I need to show my work/explain. Can anyone help me?

asked by Lindsay on May 19, 2008
64. ## precalculus

given functions f,g, and h find f o g o h state exact domain. show work f(x)=1/x g(x)=lnx h(x)=2x+15

asked by Sara on January 15, 2012
65. ## math

Write the equation of the line that passes through the points (4, 7) and (-3, 7). Show all your work for credit.

asked by angelena on June 28, 2012
66. ## measurments

which has the least value? 3130 L+38126 cl+ 3403 ml 394 kl+ 1425 Kl+ 490L please show work!

asked by Alyssa on August 7, 2012

Find the height of an equilateral triangle with sides of length 6 cm ' please show ur work

asked by Jessica on November 25, 2012
68. ## college algebra--I really need help!!

Find the domain of the composite function FOG f(x)= 2/x-3; g(x)= 7/x please show work so I can undestand

69. ## precalc

find an equation of the tangent line to the parabola at the given point..show work y=(-2)x^2 (-1,-2)

asked by Christine on April 1, 2011
70. ## math

Show all your work to receive credit! ∠E and ∠F are vertical angles with m∠E=9x+12m∠E=9x+12 and m∠F=3x+24m∠F=3x+24 . What is the value of x?

asked by Jaaide on October 10, 2017
71. ## science

how do i draw a simple particle diagram to show how ear defenders will work

asked by fred on March 10, 2010
72. ## algebra 1

please explain to me how I work out problems such as "-2-3" to get the correct answer and show the same on a number line

asked by joe on August 26, 2010
73. ## precalc

Parabola: Rewrite 3y^2 + 6y + 108x - 969=0 in standard form, show work.

asked by 95 on December 16, 2011
74. ## MATH ASAP

1) 10 1/6 yards equals how many feet ik the answer is 30 1/2 but I don't know how to show my work PLZ HELP

asked by LAYLA on December 14, 2015
75. ## Science

How many times did earth orbit the sun between140ce and 1543, please show work

asked by Katelyn on September 1, 2011
76. ## math

In Jamison's backpack, he only keeps nickels and quarters. He has 30 coins in all. How many of each coin does he have? Show work.

asked by Cindy on November 1, 2011
77. ## Chemistry

Hydroxylapatite, Ca10(PO4)6(OH)2, has a solubility constant of Ksp = 2.34 × 10-59, and dissociates according to Ca10(PO4)6(OH)2(s) --> 10Ca2+(aq) + 6PO43-(aq) + 2OH-(aq) Solid hydroxylapatite is dissolved in water to form a saturated solution. What is the

asked by Angelyka on January 24, 2013
78. ## Physics

Please answer asap with complete solution thanks a lot. I need the solution to answer other questions much alike to this one. :) Two electrons are 10^-15 meters apart. One electron is fixed on its position. The other, originally at rest, is released. How

asked by Jezrell on July 3, 2012
79. ## physics

Please answer asap with complete solution thanks a lot. I need the solution to answer other questions much alike to this one. :) Two electrons are 10^-15 meters apart. One electron is fixed on its position. The other, originally at rest, is released. How

asked by Jezrell on July 3, 2012
80. ## CountIblis, can i bother you

Countiblis, i know that you might be busy do you mind if i ask you the following for help.Only if you can please. can you explain to me just one more thing so i can undestand it. Now i have an equation which is : 3x = 3x + 5 which I know has no solution to

asked by jasmine20 on January 3, 2007
81. ## Math

Group member - Time take Juan. 32.35 Ricardo. 21.78 Lucas. 23.18 Calculate u sing the work model. Using the individual times for your three team members, write an equation to model the work done, and solve that equation for the estimated time that it takes

asked by Patrisia on November 18, 2015
82. ## Math

if 2m + n= 7, then 9m+3n= i tried using elimination for this one too. I tried to find m m= 7-n/2 Then i plugged it into the first equation. and somehow i got 7=7 ??? CAN SOMEONE PLEASE EXPLAIN

asked by Confusedperson on July 19, 2017
83. ## algerbra

4x+4y=56 3x-16y=-91 slove by using systems of elimination multiply

asked by miranda on December 22, 2010

XeO3 + I- ----> Xe + I2 (acidic solution) CN)2 -----> CN- + OCN- (basic solution) MnO2 + SO32- ---> Mn2+ + S2O62- (acidic solution) H2SeO3 + H2S -----> S + Se (acidic solution) Cl2 ---> Cl- + ClO3- (basic solution) ClNO2 -----> NO3- + Cl- (acidic solution)

asked by Brittney on October 27, 2013
85. ## Physics - drwls?

A small block of mass m = 4.0 kg can slide along the frictionless loop-the-loop. The block is released from rest at point P, at height h = 23R above the bottom of the loop (R is the radius of the loop). Express your answers in the form ngR, where n is the

asked by winterWX on March 19, 2007
86. ## Stastics

The UMUC bookstore states the average textbook costs \$119. A randomly selected sample of 26 new textbooks at the UMUC bookstore had a mean price of \$123.45 and sample standard deviation of \$15.23. Use a 0.05 significance level to test the claim that the

asked by Nick on April 26, 2016

dy/dx= (y^2 -1)/x 1. Give the general equation of the curves that satisfy this equation. 2. Show that the straight lines y=1 and y=-1 are also solutions 3. Do any of the curves you found in 1) intersect y=1? My Ans: 1. The general solution i found out to

asked by Hebe on November 7, 2006
88. ## Chemistry

What is the equilibrium equations that result when solid NH4F is dissolved in sufficient water to produce 5.0 mL of 0.5M NH4F solution? How would the addition of 5 drops of 0.1M HCl affect the equilibrium system. Give an explanation. How would the addition

asked by Megan on March 20, 2012
89. ## Genetics

Hi can anyone help me answer these questions? I think I may have the right answer but not too sure, just want to make sure. And also could you please show how to draw these as I'm not sure my drawing is not done correctly. Thankyou! Using the forked-line

asked by GenMan on January 30, 2008
90. ## Science

If I want to make a solution that has a 5% concentration of salt, is it correct for me to have 380mL water and 20g salt? My method behind this was that I wanted a 400g solution, and so since 1mL water is equal to 1g water, I did: 400x0.95=380g water or

asked by Anonymous on February 6, 2011
91. ## Math Investigations II

For what value of k will the system be dependent? x+3y+2z=-4 3x+4y-z=2 3x-y-8z=k I'm confused as to what exactly it's asking for by a dependent system. I know this is a system with infinite solutions, but I don't know how to find that in 3 dimensions.

asked by Cody on October 22, 2011
92. ## Physics

How is work affected when an object is lifted straight up instead of using a ramp? Work will increase. Work will decrease. Work will stay the same. Work will depend on the mass of the object.

asked by Willowmaker on January 29, 2019
93. ## physics

A helicopter flies to the right (in the +x direction) at a constant speed of 14 m/s, parallel to the surface of the ocean. A 1200 kg package of supplies is suspended below the helicopter by a cable as shown in the figure: the package is also traveling to

asked by Jonas on September 27, 2018
94. ## Chemistry

The specific heat of a solution is X J/g*degreesC and its density is Y g/mL. The solution was formed by combining Z mL of solution A with Z mL of solution B, with each solution initially at J degreesC. The final temperature of the combined solutions is D.

asked by Fred on April 2, 2010
95. ## Compound Inequalities

Solve. 5 < x - 2 < 11 a. 5 < x < 11 b. 7 < x < 13 c. 7 < x < 11 d. 5 < x < 16 My answer is b. Can you check my work?

asked by not+really on October 20, 2017
96. ## Calculus

Solve the integral: ∫ x^3/(x^+2)^2 I'm stuck. This is my work so far. ∫ A/(x^+2) + ∫ B/(x^2-2)^2 F(x)=A ln(x^2+2)-B/(x^2+2)+C X^3=A(x^2+2)+B

asked by Mike on October 10, 2018
97. ## math

Solve the following equation -5x + 1 > 11 Please include work

asked by tom on January 3, 2009
98. ## Math

How do u solve 15/y=3. I know the answer is 5 but how do u get there by showing your work?

asked by Karen on August 23, 2012