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 595
1. Algebra 2

How do I solve tan of theta * cot of theta? I got 1. Is that right?

asked by Ana on June 9, 2010
2. math

input output 2 11 _______ 20 _______ 35 7 26 15 50 5 23 how do i solve this?

asked by ty on March 12, 2013
3. Quick math help

asked by Anonymous on March 20, 2014

asked by Anonymous on March 20, 2014
5. Math help

Solve: x-(3/x)

asked by Shawn on November 10, 2008
6. 8th pre algebra

solve for x 2x-7=13 subtract 7 to both sides divide by 2 both sides x=10..am i right?

asked by henry on October 17, 2016
7. math vectors

If Vector a = (2, 2k), Vector b = (4, -k), are perpendicular, solve for k with solutions?

asked by Simran on February 22, 2015
8. Algebra

how do you solve this problem? (24b^3+16b^2+24b+39)/(4b+4)

asked by Cathy T on November 2, 2011
9. Algebra

I know the answer of x/x-2 + x-1/x + 1; but I do not know how to explain it in words. The answer is x = 0,1, when I solve for x.

asked by Abby on January 17, 2017

What is 5x+6x+7x=31,050 solve for X X is 1725 I'm lost where and how did they get 1725 for X

asked by Dawn on August 31, 2014
11. precalculus

solve log(2+x)-log(x-3)=log2 I know the answer is 8

asked by sarah on May 4, 2016
12. Math

How do you solve for the intersection points? x^2+y^2=25 4y=3x I know the points are (4,3) and (-4,-3) but how do you get this algebraically?

asked by Anonymous on October 2, 2007
13. pre algebrahow

do you solve a negative fraction plus a posotive fraction?

asked by emma on December 1, 2010
14. maths

Can someone help me to solve these questions please? 1) 3^x+1=9^x. Find the value of x. 2) find the value of m for which. 3^2M^-1=243.

15. Calculus help

Solve using implicit derivative cuberoot(x)+cuberoot(xy)=4y^2

asked by Collins on October 26, 2015
16. Pre-Calculus

solve by fully factoring x^3-7x-6=0 How would I fully factor this?

asked by Shreya on October 2, 2012
17. math

input ___ 16 22 50 8 30 output 10 11 14 28 ___ 18 please help me solve this.

asked by ty on March 13, 2013
18. math

input 2 ___ ___ 7 15 6 output 11 20 35 26 50 23 please help me solve this.

asked by ty on March 13, 2013
19. math: pre-calculus

Solve the equations. Log(6x-1) = Log(x+1) + log4

asked by Nicky on May 8, 2016
20. trig

How do I solve this? If cos x= 3/5, find the exact value of cos 2x

asked by Paul on December 1, 2008
21. math

input 10 15 21 6 29 ___ output 12 22 ___ 4 50 2 please help me solve this

asked by ty on March 13, 2013
22. Math (algerba 1)

(4 X 10 to the -5th power) to the 2nd power. How would I solve this?

asked by Katea on March 13, 2013
23. math

1/4x-1/6y=-2 -1/6x+1/5y=4 solve for x and y its suppose to be x equals 12 and y equals 30 need steps thanks

asked by dj on July 21, 2008
24. math

S = 2πr2 + 2πrh solve for h H=S-2πr/2πr?

asked by James Hockery on October 2, 2016
25. math;SOS

solve the logarithmic equation. log(5x+7)=1+log(x-9)

asked by kristina on December 2, 2012
26. algebra1

what formula should i use to solve this quadratic formula? 2x2 + 4x + 2 = 0.

asked by ash on June 7, 2010
27. Precalculus

asked by Lizzy on November 15, 2010
28. math

solve the logarithmic equation. log(5x+7)=1+log(x-9)

29. Algebra

Please solve for the interval notation corresponding to the set notation {x | x < –7}

asked by Jen on June 2, 2009
30. Algebra

F=9/5C+32 Solve for C if someone could explain in a step by step way that would be great!

asked by Linda on September 11, 2011
31. Algebra 1

How would you solve 5a^2 + 21a/2a^2 + 6a divided by a + 4/4a^2 divided by 5a^3 + 11a^2 + 2a/a + 3?

asked by Jay on May 27, 2015
32. Math

Solve this linear equation, y-x divided by 2=5 x-y divided by 5=13

asked by Cherie on January 11, 2015
33. Math

Solve each equation by factoring: (2x+1)(3x-2)=10 How do you get -4/3 and 3/2 out of this equation? I'm so confused

asked by Justin on October 12, 2010
34. AP Math

Solve: log2(2x^2)[log2(16x)]= 9/2log2x

asked by Anonymous on January 6, 2010
35. pre calculus

1/3log(base7) x=2log(base7)4 Solve for x?

asked by Natasha on September 17, 2012
36. Algebra 1

Can you tell me if this is correct. Solve.x^2+6x-4=0 the answer I got is x=-3+sqrt13,-3-sqrt13

asked by Brenna on June 30, 2008
37. algebra 2

asked by logan on January 29, 2008
38. Algebra

solve and answer in interval notation (x+2)(x-1)(x-10)>0 x+2=0 x-1=0 x-10=0 x=-2 x=1 x=10 answer: (0,-2)(1,0)(10,0)

asked by Bo on April 3, 2008
39. math

6/(2x - y) + 7/(3y -x)= 7 4/(2x - y) + 14/(3y -x) =6 Please explain step by step to solve this equation.

asked by jenny on November 18, 2014
40. math

solve -4+7logx=10 & log(x+3)+log(x-2)=log14

asked by allen on May 5, 2011
41. Math

Solve for 0 < θ ≤ π sin θ = sin 2θ I get (0,π/3,π,5π/3). Idk what I did wrong.

asked by Mike on September 26, 2017
42. algebra

187=-17R How exactly would I solve this? Would you divide the 187 by the -17?

asked by Allyson on October 11, 2010
43. equations

solve the equation 3y square-XY=0 equation(1) 2X-5Y=1 eqn (2)

asked by emma on November 21, 2011
44. Dividing decimals

How do you solve 49.05 divided by 2.5. Need to see step by step process.

asked by Elle on March 2, 2014
45. Math

5a+6b/2 minus 5a+6b/2 The answer is suppose to be 6b. When I try and solve it I keep getting 0 for my answer.

asked by Rick on May 6, 2010
46. integrated algebra

how can you solve x^2 - 3x = 0 i was using a formula as: x^2-7x+10=0 (x-5)(x+2)= 0 x-5=0 x+5 +5 x=5 I was following this formula but got stumped on this question please help.

asked by sally on January 13, 2012
47. algebra

Solve this quadratic equation using the quadratic formula. x^2 + 8x - 5 = 0

asked by yelena on January 21, 2010
48. Math

solve for g. 0=2,750,000g - 2,750,000

asked by John on April 24, 2010
49. Math

Solve the equation. 10v/11+10= 8-7).The 10v is over the number 11.

asked by J.J. on June 1, 2015
50. m

Solve the equations. (a) 2D + 3 = 13 D = _____ (b) 12E - 3 = 0 E = _____

asked by Regina M on December 21, 2012
51. math

cos2x-sinx=0. Factor and solve for sinx

asked by anon on October 21, 2013
52. math

solve the equation 5 indice x = 1 and 16 indice x =0.165

asked by swendy on January 18, 2012
53. math

how do I solve the equation (y+6) divided by 3- (y-3) divided by2=2

asked by Kate on October 7, 2010
54. Algebra/Permutation

How do I solve this problem. I try just 1 than just 4 nether were right, than I try 4/4r the Problem is 4Pr Thank you

asked by Mary Ann on May 21, 2014
55. math

use the percent proportion to solve for the unknown value: whole=48 percent= 25

asked by Anonymous on April 21, 2010
56. Lisa

2/3 to the second power divided by 4/5 divided by 1/3. Can you help me solve this? Thank you! (2/3)^2/(1/3)^1= (2/3)^2 * 3^1 = 2^2 * 3/9= 4/3 check that.

57. math

solve -14is less then and equal to 3x -7less than and equal to -2

asked by Tracy on January 23, 2011
58. pre-algerbra

step by step how to solve algerba problems

asked by Carus II on August 3, 2011
59. Math

Solve for: cos (2 theta) = 2 - 2 sin^2 (theta)

asked by Meagan on October 21, 2010
60. Algebra

(-16) - 6 + (-5) If the -16 is in ( )'s does that make it a positive 16? How would I solve this step by step?

asked by Julie on August 22, 2018
61. Algebra

asked by Rachal on January 23, 2011
62. algebra 2

how do you solve this? -2square root7-4square root7

asked by Erin on October 26, 2008
63. algebra

solve for, where u is a real number sqrt 9u - 10 = sqrt 5u + 16

asked by lisa on January 23, 2011
64. Trig

solve sin(2 theta)< cos( theta)

asked by maggie on April 19, 2009
65. algebraII

solve for x: 1)log(x-3)+log(x+4)-logx=log5

asked by MIchelle on January 17, 2011
66. math, algebra

Can someone put this in an equation for me . I want to solve it but i just need how to set up in the equation. (80)

asked by jasmine20 on December 18, 2006
67. Math

Solve the polynomial inequality x^2+5x >or= -6 (-infinity, -3]u [-2, infinity) or [-3,-2]

asked by lt on March 3, 2009
68. trigonometry

how to solve sin 4x= cosx(4 sinx - 8 sin ^3x)

asked by cristina on October 18, 2010
69. math

x= sqrt( 3/2x + 5/2 ) sqrt = square root How do you solve this ? Thank you.

asked by Maisha on May 19, 2010
70. calculus

Four out of five days were used to create a problem, how many days will it take to solve it?

asked by Crown on February 1, 2014
71. Social Studies

I need help checking my awnsers on a study guide for the unit test on Eurpe Today Which statement explains why the British system of government is a constitutional monarchy? A. The prime minister is chosen according to the constitution. B. The king or

asked by Kitty Cat on May 16, 2019
72. General Physics 1

A simple Atwood's machine uses a massless pulley and two masses m1 and m2. Starting from rest, the speed of the two masses is 4.8 m/s at the end of 5.5 s. At that time, the kinetic energy of the system is 33 J and each mass has moved a distance of 13.2 m.

asked by Charles on July 26, 2013
73. Science Help!

The arrows in the image show the direction in which carbon is moving. Which proces of the carbon cycle is indicated? The picture is of a wolf going after a bunny there is a building in the back with black smoke coming out of it and the arrows are point to

asked by Callie on November 14, 2014
74. Abnormal Psychology

In the “strange situation” attachment assessment technique, children with Down syndrome A. display significant distress upon separation. B. readily reach to strangers for comfort. C. show few distress signals despite an apparent need for contact with

asked by Felicia on October 22, 2012
75. MATH

Write probability as fraction 1. Sam flips two coins. Find probability of 1 head and 1 tail. I think 2/4 or 1/2 2. You roll 1 number cube to show an odd number. I think 3/6 or 1/2 3. Sheila has 8 apples; 5 of them are red. I think 5/8 4. Of 12 books, 3 are

asked by Anonymous on March 13, 2014
76. Chemistry ^.^

Hi there Can someone please show me how to draw a fully labelled diagram of atoms such as: He ( the proton number at the top is 4 and the atomic mass at the bottom is 2) I now that it would have protons and neutrons in it and the electrons would be outside

asked by Walsh George on June 4, 2007
77. Math

A toy company has increased their size of one of their dolls. The packaging department has calculated that they need to add 3 inches to each of the dimension of the original packaging (Original height=10 in width=2.75 length=5). What is the new amount of

asked by Ashley on April 20, 2015
78. Stats

The census figures show that the average income for a family in a rural region is approximately \$34,860 per year. A random sample has a mean income of \$33,566 per year, with a standard deviation of \$1,245. At a sig. level of .0.01 is there enough evidence

asked by Jessica on May 20, 2013
79. algebra

high school # of band memebers logan 75 Northeast 90 during the halftime show, the bands plan to march into the stadium from opposite ends using formations with the same # of rows. If the bands match up in the center of the field what is the maximum number

asked by melony on March 11, 2008
80. Geometry Ratios

At the half time show during a football game, a marching band is to form a rectangle 50yards by 16yards. The conductor wants to plan out the band members positions using a 14- by 8.5-in. sheet of paper. What scale should she use to fir both dimensions of

asked by A on March 13, 2012
81. math

ty uses 20ft of fencing to make a rectangular garden.he devides the rectangle into 4 equal squares all in 1 row.the side of each row is 2ft long.what is the area of the garden? i dont know how show representations,or write an equation for this problem

asked by micah on November 2, 2016
82. chemistry

Calculate the volume of fuel needed for a flight if the jet fuel has a density of 0.803kg/L.First use dimensional analysis to convert liter to grams.Then substract to find how many kilograms need to be added.then convert this mass into liters,This is a

asked by treasa on September 9, 2014
83. Why so much school

Can anyone help me?? Suppose Ann’s bread recipe calls for 900 g of flour, 0.68 kg of sugar, 145 mg of salt, and 185 mg of baking powder. Her scale measures grams only. How can she convert each of the ingredients to equivalent measures in grams? Dont give

asked by Pedro on October 2, 2017
84. Statistics

On the sixth day of Statistics, my teacher gave to me, six geese-a-laying. The eggs they were a-laying were normally distributed and had a mean of 7cm and standard deviation of 2cm. What is the probability that if you randomly select one egg from each of

asked by Anonymous on December 26, 2015
85. chemistry

A student collected the following data for a fixed volume of gas: ￼Temperature (C) Pressure (mm of hg) 10 726 20 750 40 800 70 880 100 960 150 ??? Fill in the missing data point. Show all calculations leading to an answer. is the answer 1025 ?

asked by Ciaria on March 12, 2015
86. statistics

On the sixth day of Statistics, my teacher gave to me, six geese-a-laying. The eggs they were a-laying were normally distributed and had a mean of 7cm and standard deviation of 2cm. What is the probability that if you randomly select one egg from each of

asked by Anonymous on December 26, 2015

8.Which region of Mexico is best for growing crops? A.Baja California B.Southern Mexico Plateau (I PICK THIS) C.Yucatán D.Northwestern Mexico 9.Like the United States, the government of Mexico is A.breaking away from a one-party system. B.an established

asked by bonn on February 25, 2014
88. acc/422

Week Two Individual Assignment the Robert Hughes Hardware Company My friend Robert Hughes runs hardware business in down town Dallas. Because of competition he relies on neighborhood customers for sales. From inception of operations to December 31, 2010,

89. Physics

Suppose now that the air carts below are both moving to the right initially. The cart to the left has a mass m1 and an initial speed v0; the cart to the right has an initial speed v0/2. If the center of mass of this system moves to the right with a speed

asked by Carden on April 29, 2010
90. physics

m1 = 2.7 kg block slides on a frictionless horizontal surface and is connected on one side to a spring (k = 40 N/m) as shown in the figure above. The other side is connected to the block m2 = 3.6 kg that hangs vertically. The system starts from rest with

asked by joe on November 2, 2011
91. physicss help!

m1 = 2.7 kg block slides on a frictionless horizontal surface and is connected on one side to a spring (k = 40 N/m) as shown in the figure above. The other side is connected to the block m2 = 3.6 kg that hangs vertically. The system starts from rest with

asked by joe on November 2, 2011
92. english

Please help me to correct my grammar. Thanks Exercise is bodily activity that helps for the development and maintenance of physical fitness and overall health. It strengthens musculoskeletal and cardiovascular system; even the soci-psychological aspects of

asked by jessie on February 27, 2008
93. Physics (Rotational Kinetic Energy)

Hello, The question is: A solid ball rolls along the floor with a constant linear speed v. Find the fraction of its total kinetic energy that is in the form of rotational kinetic energy about the center of the ball. Krot/Ktotal = ? The answer I keep

asked by Ben on October 21, 2009
94. LA the giver chapters 1-2

Which of the following is an example of a dwelling? Select all that apply. 1. a city 2. a house*** 3. a monument 4. a condominium*** Which of the following passages from the novel helps you realize that the community in which Jonas lives is not like

95. English

I am having trouble writing a topical outline and expanding it to a sentence for this paper: Marie Curie is best known as the discoverer of the radioactive elements polonium and radium, and is the first person to earn the honor of two Nobel prizes. Her

asked by Erin on May 3, 2009
96. Physics - urgent

I already asked this and was given an answer, but I don't fully understand it and so would like a further explanation. What I asked was... An electron is accelerated through a uniform electric field of magnitude 2.5x10^2 N/C with an initial speed of

asked by Linn on April 21, 2009
97. Algebra

Mina's catering service is organizing a formal dinner for 280 people.The hall has two kinds of tables, one that seats 4 people and one that seats 10 people.The hall can contain up to a total of 52 tables.Write and graph a system of inequalities that can be

asked by Keanna on October 13, 2014
98. math

You are buying telephone equipment from a company whose prices are given in English Pounds currency. You need to purchase telephone equipment for 3 offices along with one complete switchboard system. Equipment for each office costs 100 Pounds, and the

asked by jc on April 12, 2019
99. Chemistry

1)Suppose a piece of lead with a mass of 14.9 g at a temperature of 92.5 degrees is dropped into an insulated container of water. The mass of water is 165 g and its temperature before adding the lead is 20.0 degrees. What is the final temperature of the

asked by Mike on January 7, 2008
100. MATH

A letter carrier can deliver mail to 112 homes per hour by walking and 168 homes per hour by driving. Question1: By what percent is productivity increased by driving? Question2: If a new ZIP Code system improves driving productivity by 12.5%, what is the

asked by kik on February 8, 2014