# 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 87
1. ## math

helow answer. show work how to figure out the below (1.2)square root + (2.8) sq. root = 3.1

asked by Rosie on April 11, 2013
2. ## 5th math

how many 3,000s in 270,000? and how many 90s in 63,000? please show me the work also , so i can do the rest right. thanks

asked by pat on October 26, 2010
3. ## help with hw

convert : 60 cents per doz oranges to cents per orange please show me the work......

asked by candy90 on September 19, 2011
4. ## Algebra

Let g(x) = 10-x/2+x a. Find g (–1) b. State the domain of the function g(x)= 10-x/2+x c. Find g (t + 1) and simplify as much as possible. Show work.

asked by Kim on June 13, 2009
5. ## math

Given these sets: A = {3, 4, 5, 6, 7} B = {6, 7, 8, 9} C = {2, 4, 6, 8} List the elements of this set A(B¿C) Show work, step by step.

asked by tyson on February 20, 2011
6. ## Algebra

I have never had algebra and cannot figure out how to work through the problem below [(x + 1)² - (2x + 1)]1/2 + 2|x| - 6 = 0 Can you show me the steps for solving the problem?

asked by Coni on April 13, 2011
7. ## algebra

Identify all angles with a measure of 58 degrees in the diagram below. . 1/58 degrees . 4/3 . 5/6 . 8/7 Show your work

asked by Alexius on December 2, 2012
8. ## Math

If S1 = 0.7 and S2 = 2.1 in a geometric series, determine the sum of the first 12 terms in the series. Be sure to show all of your work.

asked by Alex on September 17, 2014
9. ## college alg

find the equation of a line that is perpendicular to line y=1/6x+6 and contains point (-7,0) y=? please show work so i can see how its done

asked by alli on September 4, 2012
10. ## Trig

Given sin= -√5/6 with π < u < 3π/2 and cos v= √3/5 with 0 < v < π/2 find sin(u-v) and tan(u+v). Please show work and simplify.

asked by Jane on March 8, 2016
11. ## algebra

-2x+5y=-15 Find the x- and y-intercepts and graph the equation plotting the intercepts. Please show all of your work.

asked by mary on July 17, 2011
12. ## Calculus

Use derivative formulas to find the derivative of the function. please show your work h(x)=10^3-25x^6+3x^15

asked by Sarah on September 25, 2012

Given these sets: A = {3, 4, 5, 6, 7} B = {6, 7, 8, 9} C = {2, 4, 6, 8} List the elements of this set A(B∩C) Show your work, step by step.

asked by Jen on July 7, 2011

given

asked by lisa on October 15, 2013
15. ## math

Find the equation of a line that is perpendicular to the line y=1/8x+5 and contains the points (-7,0) y= please show work

asked by caylan on January 6, 2013
16. ## math

5. The sum of 7 unequal positive integers is 61. What is the largest possible value that any of those integers can have? A.55 B.40 C.39 D.13 E.9 please show work

asked by Johnny on July 19, 2014
17. ## Urgent math

If f(x, y, z)=sin(3x-yz), where x=e^(t-1), y=t^3, z=t-2, what's df/dt(1)? x(1)=1 y(1)=1 z(1)=-1 df/dt=(3cos(3x-yz))(e^(t-1))+(cos(3x-z))(3t^2)+(cos(3x-y))(1) I seriously need help on this and tell me the answer and show your work through steps. Thanks.

asked by Brian on April 20, 2013
18. ## mathematics

Need help with this math problem please. Work need to be show but I have no idea how to complete the problem. (-4)3 (the 3 is an exponent) Thanks for your help

asked by chasity on August 29, 2010
19. ## Precalculus(URGENT)

g(x)=1-5x if the domain of the function of g is {x-3 is less than or equal to x which is less than or equal to 2} what is the smallest value of the range show work please

asked by Arielt on March 1, 2010
20. ## math

If a rule is (3x,y) and a scale factor of 4 is used to transform it , what will the new rule be??? Show work 12x, 4y?

asked by matt on March 27, 2007
21. ## physics

can anyone show me how to do this? A container of gas is at a pressure of 3.7 * 10^5 Pa. how much work is done by the gas if its volume expands by 1.6 m^3? thanks

asked by y912f on February 15, 2009
22. ## Math

Find three consecutive integers such that 5 times the first and third is 14 greater than 8 times the second. Please show all work.

asked by Sarah on February 14, 2010
23. ## MATH

The average of two numbers is x. If one of the numbers is 3m-1, then the other number, in terms of x and m, is... Is this how you do it? Please explain how and show work...... (3m-5)+(?)/2=x

asked by Anonymous on August 11, 2013
24. ## maths....help!!!!!!

a line has slope 4/3. through which points could this line pass? a.) (24,19), (8,10) b.) (10,8), (16,0) c.) (28,10), (22,2) d.) (4,20), (0,17) if possible show the work plz!!!!

asked by anjila on September 21, 2008
25. ## science

Just need to know if my answer is wrong or right. Thank You! :) Joe's computer mouse doesn't work. He wonders if it is plugged in. He checked the mouse cord and discovers that it is unplugged. Which stage of the scientific method is Joe in when he checks

asked by pam on September 5, 2010
26. ## college

HIO3 + FeI2 + HCl --> FeCl3 + ICl (in acidic solution) Show and label the two balanced half-reactions (oxidation and reduction). Add H2Os, H+s or OH-s as needed.

asked by jillian on October 23, 2010
27. ## AP CHEM

HIO3 + FeI2 + HCl --> FeCl3 + ICl (in acidic solution) Show and label the two balanced half-reactions (oxidation and reduction). Add H2Os, H+s or OH-s as needed.

asked by dylan on October 23, 2010
28. ## Solid Mensuration

The diagram is formed from 6 identical closed-packed circles. If the height of the figure is 2 feet, find the radius of each circle in inches. Show your complete solution with formula.

asked by joy on May 1, 2016
29. ## chemistry

Describe how to prepare 1 L of a 0.5 M solution of cobalt chloride hexahydrate (CoCl2 6H2O). Be sure to identify the labware shown above (flask and a scale), explain your reasoning, and show any calculations.

asked by Morgan on February 20, 2015
30. ## History PLEASE CHECK MY WOrK

4. How are Hindu beliefs related to the caste system in India? (1 point) Hindus reject the caste system, offering the hope of nirvana to all. The caste system is the foundation of Hinduism. Hinduism urges people to move out of their castes. To Hindus, all

asked by Doctor who on September 29, 2016
31. ## US HISTORY - Help please

Which answer best explains how the Articles of Confederation addressed the question of creating a court system? The Articles established the trial-by-jury system for the first time in history. The Articles created state, regional, and national courts

asked by Caitlyn on December 11, 2016
32. ## STATISTICS (2 Questions)

Show all work. Any answer given with just an answer will be counted wrong. Also, Show the graph and shaded region as needed or it will be counted wrong. Make sure to answer the question using the steps of hypothesis testing. a.) state the hypothesis, b.)

asked by Courtland White on July 27, 2011
33. ## Macroeconomics

Show the changes to the T-accounts for the Federal Reserve and for commercial banks when the Federal Reserve buys \$50 million in U.S. Treasury bills. If the public holds a fixed amount of currency (so that all loans create an equal amount of deposits in

asked by Yzenetra Adams on March 4, 2010
34. ## Math Analysis

What is the approximate horizontal distance traveled by a soccer ball that is kicked at an angle of 30 degrees with an initial speed of 60 feet per second? a) 84 ft b) 88 ft c) 93 ft d) 97 ft e) 105 ft ==> I tried solving it by solving for x in the

asked by Emily on January 10, 2010
35. ## maths

The mass of a particular substance is known to grow exponentially at a rate of 0.5% per hour. Its initial mass was 25 grams and, after t hours, it weighed 31 grams. The equation modelling this growth is 25×1.005 t  =  31. Use the method of

asked by Grace on May 8, 2011
36. ## CHEM..

What is the major advantage of the stock system over the old naming system? The stock system is well understood world wide. And, it allows for multivalent atoms. One advantage is that some elements have more than two common valences; therefore, the "ous"

asked by Bryan on January 4, 2007
37. ## Trig help

Can someone help me find ALL solutions in the interval [0,2π) for the given equations. Please show work. 1) sin2x = sin2x 2) tan2x +tanx = 0

asked by Jane on March 15, 2016
38. ## algebra

perform the operation and simplify the answer. sqrt 12x^3 . sqrt 3xy^2 Please show work.

asked by annette on December 11, 2009
39. ## Chemistry

How much heat is required to warm 122g of water by 23.0°C? Specific heat is 4.184 J/g° C. Please show work:(((

asked by Wendy on May 18, 2018
40. ## physics

How does a wavelength of the fourth harmonic on a rope with both ends fixed compare with that of the second harmonic? Please show all work Thank you

asked by silly on May 2, 2011
41. ## Stats.....plz help me.....

Given the following frequency distribution, find the mean, variance, and standard deviation. Please show all of your work. Errors Frequency 51-53 9 54-56 19 57-59 16 60-62 24 63-65 25

asked by Jennifer on October 14, 2011
42. ## precalculus

For the given functions f ,g , and h , find fogoh and state the exact domain of fogoh . Please show all of your work. f(x)=e^x g(x)=sqrt x h(x)=2x^2+3x-35

asked by tonia on November 11, 2011

find the line with the given properties. Parellel to the line 7x-y= -7; containing rhe point (0,0) plz show work

asked by James on December 9, 2012
44. ## Biology

4) If a person with blood type AB marries someone with type O, what would be the possible genotypes and phenotypes of their children? (show work if you can please)

asked by AAAA on September 16, 2012

find a bound on the real zeros of the polynomial. f(x)=x^4+2x^3-8x-7 every real zero of f lies between -? and ? *pleasae show all work*

asked by ladybug on November 18, 2012
46. ## Statics

Given the following frequency distribution, find the mean, variance, and standard deviation. Please show all of your work. Class Frequency 61-63 19 64-66 17 67-69 5 70-72 10 73-75 12

asked by kesha on June 21, 2012
47. ## algebra

Find the slope of the line containing the given pair of points. If the line is undefined, state so. Please be sure to show all of your work. (1, 2) and (9, 12)

asked by nicole on November 1, 2011
48. ## physics

a car rounds a curve with a radius of 45.0 m at a speed of 22.0 m/s. What is the centripetal acceleration of the car? please show work

asked by taylor on May 15, 2015
49. ## MATH

what type of trend does the scatter plot below show? what type of really work situation might the scatterplot represent?

asked by bifrai/won on April 21, 2017
50. ## math

the function f is defined as the follows f(x)={x+6 if -5 less than or equal to x < 1 {9 if x = 1 {-x+5 if x > 1 a. find the domain of the function f is? b. locate any intercepts; if any please show work

asked by Heather on January 1, 2013
51. ## algebra

***show work evaluate the expression: 7^-6 (-6)^-9 simplify the expression. write your answer using only positive exponents. 4x^-2*-x -2a^0*a^2

asked by SoccerStar on April 20, 2011
52. ## precal

For the given functions f, g, and h, find fogoh and state the exact domain of fogoh. Please show all of your work. f(x)=lnx g(x)=|x|-2 h(x)=4x-7

asked by Jo on January 18, 2012
53. ## pre-algebra

Find the slope of the line containing the given pairs of points. If the line is undefined, state so. Please show all of your work. (-5, -2) and (-7, -2)

asked by cody on June 20, 2011
54. ## math

Ex 12: The smallest of five consecutive integers is represent by y-3. What is the largest of these integers, in terms of y? please explain and show work.

asked by Johnny on July 22, 2014
55. ## Maths grade 8

Help how do I find "one exterior angle 180- interior angle" of 6,7, 9, 12 sides please show your work so I can understand thank you

asked by Jay on September 27, 2016
56. ## Chemistry

If Gold sells for \$1200.00 an ounce, how many atoms of gold can you buy for a penny? Please, Show work.

asked by Kristen on March 27, 2013
57. ## math

the graphs of the three equations below form a triangle. find the coordinates of the triangle's vertices. 4x+y=1 2x-y=5 3y+3x=12 show work.

asked by kms on May 22, 2017
58. ## encryption

Show that the active CCA against ElGamal encryption given in the lecture does not work when against the Cramer-Shoup encryption.

asked by fiona on October 18, 2011
59. ## math

the sum of two numbners is 143. on of the numbers is 3 more than six times the other number..find the two number and show work

asked by Marcia on August 2, 2012
60. ## math

pb is a line segment on a number line. it has endpoint at -2 and 12. what is the coordinate of it's midpoint? Show your work so that way i can understand it

asked by Hannah on February 21, 2018
61. ## Calculus plz help integral

Find the integral of §x^1/2.e^xdx at upper limit of 1/2 and lower limit of zero..show work plz

asked by Collins on October 26, 2015
62. ## math

Brown earns a dollar for every candy he sells. If he sells 30 candies, how much will he earn? Please show me the work.

asked by crystal on February 10, 2015
63. ## Algebra 2

Find the equation for the parabola with the given vertex that passes through the given points. vertex (-4,2) point (-3,0) please show work!!!

asked by Alicia on January 11, 2015
64. ## math

The point (5, -7) is dilated by a scale factor of 4 about the origin. Find the location of the new point. Show your work.

asked by bre on March 27, 2013
65. ## math am i correct

Multiply 3/5 times 25 Write your answer in simplest form. I also have to show my work it this correct? 3/5 times 25/1 15/1 = 15?

asked by scooby9132002 on July 19, 2009
66. ## Precalculus

Give an example of an increasing function whose domain is the interval [0,1]but whose range does not equal the interval[f(0),f(1)] please show me the work

asked by Fatima on September 23, 2012
67. ## math

whats the product of -8x^2y and-2xy^3? use law of exponents to find the product. show your work. please helppp

asked by Karley on April 15, 2012
68. ## Math

Your test average is 86 after taking three tests. You remember that two of your scores were 88 and 83. What was your score on the third test? show your work.

asked by Hannah on January 7, 2018
69. ## physics

steven throws a 3.5kg ball at a speed of 25m/s. what is the momentum of the ball? Please show work

asked by john on December 6, 2014
70. ## Carpentry

The side of the podium measures 13" by 46" How many side pieces can we cut from a sheet of 3/4 plywood 4' by 8'? Show your work

asked by Vianna on January 31, 2017
71. ## math

Given p is true, q is false, and r is trus, find the truth value of the statement (~p^q)~r. Show step by step work.

asked by Melissa on July 17, 2011
72. ## Math

Hello! I have a question. What is a table of values for y=x-8? Please tell what free calucators show work! I've been on this question for hours and I'm really frustrated!

asked by MarkiplierFan8228 on May 10, 2016
73. ## pre-alg URGENT

triangle ABC has coordinates. A(1,4); B(3,2); and C(4,2). Find the coordinates of the image A'B'C after a reflection over the X axis. (Show your work)

asked by KurtCornell on November 12, 2013
74. ## algebra 1

A model of a house is shown. what is the perimeter, in units, of the model? you must show your work to earn credit.

asked by Anonymous on March 15, 2019
75. ## Physics

A skateboarder enters a ramp at 5 m/s, skates down it and exits at 14 m/s. What was the Height of the ramp? A. 8.7 m B. 85.5 m C. -1.2 m D. 3m E. 1.2 m Pls show work !

asked by john on December 3, 2012
76. ## algebra

Find the slope of each of the three line segments in the graph below. Please show all of your work. Between which two points is the slope the smallest?

asked by jasmen on May 10, 2011
77. ## Stats

Given the following frequency distribution, find the mean, variance, and standard deviation. Please show all of your work. Errors Frequency 51-53 9 54-56 19 57-59 16 60-62 24 63-65 25

asked by Jennifer on October 13, 2011
78. ## calculus

can someone please help me find all the zeros of the following polynomial. write the polynomial in factored form. f(x)=x^3-3x^2+16x-48 can you please show all work

asked by Josh on December 24, 2012
79. ## Math

make a conjecture for the following show work the sum of an even and odd number. - the product of two odd numbers.

asked by Geometry Help!!!! on September 15, 2011
80. ## MATH

find the slope,if any, of the line perpendicular to the line through the points (2,-7) and (3,4). i need to show my work!. i got 11 as my answer but i think its wrong.:(

asked by Anonymous on August 20, 2014
81. ## Geometry

B is the midpoint of Symbol for segment A C. . AB=5x+2 AC=12x-2 What is the value of BC? Show your work for credit. Line segment A C with point B on it.

asked by Ash on July 1, 2010
82. ## precalc

Letf(x)=2x2 –5 and g(x)=x+4. (a) Find the composite function ( f o g)(x) and simplify. Show work. (b)Find (f og)(3).Showwork.

asked by Tony on July 7, 2016
83. ## Earth Science

If a sample contains 70g of Carbon 14 and 70g of Nitrogen 14, how many half lives has it undergone? (show all of your work)

asked by Andy on March 21, 2013
84. ## math

There are 3 feet per yard. Do the division and what do you get? ?? Find the equivalent measure. 45 feet=___________yards show work 15

asked by Writeacher on March 27, 2007
85. ## math

a jetliner is crusing at an altitude of 31,680 ft. What is the altitude in miles? Show work by using demensional analysis.

asked by Anonymous on October 26, 2010
86. ## Quantitative Reasoning ( College Freshman)

For the quadratic function : y=-0.25(x+8)(x-6) write the function in the vertex form y=a(x-h)^2+k by completing the square. Show all work.

asked by Bonni on April 5, 2013
87. ## Math

Markus got a 63 out of 65 questions right on a social studies test. What will be the percentage he would get from the questions he got right? Explain and show your work.

asked by Kortanie on March 30, 2017
88. ## math

Samuel is 1/2 as old as his brother. In seven years, he will be 2/3 as old as his brother will be. Find their present ages. Show each step of your work.

asked by Hawk Cleary on May 29, 2015
89. ## math

write an equation of the line containing the given point and parallel to the given line; use y=mx+b form; (5,8) x+4y=7 i keep getting this wrong. Can someone show me how to work this? Thank you so much

asked by barb on September 3, 2010
90. ## Remainder Theorem

Use the remainder theorem to: find the remainder when f(x) is divided by x – c, and determine whether x – c is a factor of f(x). f(x) = x^4 - 8x^3 + 9x^2 - 69x + 24 ; x - 8 Please show all of your work.

asked by Armando on May 29, 2011
91. ## pre-calc helpppp

Find sin x/2, cos x/2, and tan x/2 from the given information. (show work please) thank you!!! cos x = − 4/5, 180° < x < 270°

asked by John on April 21, 2012
92. ## Chemistry (Ksp and Solubility)

Kindly answer my query as early as possible.Please solve the complete question A solution contains 0.01M Ag+ and 0.001M Ba+2 . ksp of Ag2CrO4 = 2.4*10e-12 ksp of BaCrO4 = 1.17*10e-10 A solution of K2CrO4 is added to this solution. Which will precipitate

asked by Bilal Asif on November 8, 2015
93. ## Chemistry

The question is: Isotonic saline is a 0.9% (g/100ml) solution of salty water. You are asked to make up 2L of isotonic saline. How much salt should you weigh out? I got the answer of 18g with the following working: 9 ÷ 1000(ml) x 100 = 0.9 Therefore 9% of

asked by Rachael on January 15, 2011
94. ## Chemistry

Consider a solution containing 4.35 mM of an analyte, X, and 1.09 mM of a standard, S. Upon chromatographic separation of the solution peak areas for X and S are 3251 and 10075, respectively. Determine the response factor for X relative to S. F=? To

asked by ScienceGeek on June 7, 2013

Describe how you can make the line of best fit. Write the approximate slope and y-intercept of the line of best fit. Show your work. So, I know how to make a line of best fit-- how do I write the y-intercept or slope of it, though? Please, please help. The

asked by Reb on April 15, 2016
96. ## PHYSICS HELP

Suppose the aliens watching the show are on the surface of Mars. Mass of Mars: 6.42 x 10^23 kg Radius of Mars: 3.394 x 10^6 m Calculate; A) the weight of a 40.0 kg alien on Mars B) the weight of 40.0kg alien on earh Earth-sun distance:1.50x10^11m Mars-sun

asked by Maddie on March 26, 2015
97. ## political science

the system of government in the state of CA can be described as : a.unitary system b.federal system 18).the constitution grants state governments: a. enumerated powers c.enumerated and defined powers

asked by micah on May 22, 2012
98. ## Chemistry

How many grams of dry NH4Cl need to be added to 2.10L of a 0.600M solution of ammonia,NH3 , to prepare a buffer solution that has a pH of 9.00? Kb for ammonia is 1.8x10^-5. I just wanted to make sure I dd this write, can you please check my work? Thank

asked by Jessica on October 8, 2011
99. ## math

Find the common difference in the outputs to help find the missing outputs in the table. Be sure to show your work. a: 5; 6; 7; 8; 9 b: 3.8; 4.6; 5.4; __; __ (I can't show the table so that's the best i can do. __ = missing outputs)

asked by hhhh on October 23, 2018
100. ## java programming

You need to provide more than a yes or no answer for this question. Consider both the selection sort and the bubble sort. If these algorithms will work with duplicates explain why they will still work. If they will not work, explain why they will not work.

asked by george on July 29, 2006