# 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 557
1. ## algebra 1

A ramp has a rise of 8 and a run of 10, what's the slope? I'm not sure how to solve it. The other question is to find the slope of the line that passes through 17/2, 8) and (5/2,-1) I did -1 - 8 is 7 and 5/2 - 17/2 as -12/2 so 7/ -12/2 is 7/-6

asked by Carmen on September 15, 2009
2. ## Math

Solve by completing the square x^2-18x=10 Could you please explain this process. I have read through the text over and over and I just do not understand the process.

asked by asd on September 24, 2010
3. ## math

ABCD is a quadrilateral inscribed in a circle, as shown below: What equation can be used to solve for angle A? (x + 16) + (6x − 4) = 180 (x + 16) + (x) = 90 (x + 16) − (2x + 16) = 180 (x + 16) − (x) = 90

4. ## Math

The length of a rectangle is 8 cm greater than its width. Find the dimensions of the rectangle if its area is 105 cm. How do I solve?

asked by Maxie on December 4, 2008
5. ## Pre-Algebra

"Triangle LMN has L at (1,-1) and M at (2,3). Triangle L'M'N' has L' at (-1,-1) and M' is at (3,2). Describe the transformation." This question is really tripping me up. I even tried putting it on a graph to solve it, but I just can't. PLEASE HELP!!!!!

asked by purplegurl on January 26, 2017
6. ## math

A box contains 12 lightbulbs. Find the number of ordered N samples of size 3: (a) with replacement (b) without replacement Also, please do Not solve.

asked by dddd47906 on April 9, 2014
7. ## math02 / trigonometric

solve the following oblique triangles using sine law. Given: Y=55 degree 10 minute, b=125cm, beta=9 degree?

asked by wenz on January 22, 2012
8. ## Maths

Solve this simultaneous equation: x+3y=2 and x/3+y/2 =1 Please explain step by step so i understand for future reference. Thankyou x

asked by Anonymous on November 6, 2015
9. ## algebra

\$2000 principal earning 3% compunded after 6 years? how do i solve this? i don't need answers i just don't know what the equation is.

asked by quesia on September 3, 2016
10. ## Calc: Difference quotients

"Use difference quotients with delta(x)=0.1 and delta(y)=0.1 to estimate fx(1,3) and fy(1,3) where f(x,y)=e^(-x)sin(y)." I don't know how to solve this problem. Could someone walk me through it? Thank you so much!

asked by Brittany on February 27, 2011
11. ## Math

Use the distributive property to solve and explain all of the steps: -2.5(1-2n)-1.5n. I think the answer might be -2.5- -6.5n. Even if this is correct I don’t know how to explain it. Plz help!

asked by ^-^ on December 12, 2018
12. ## Pre-Calculus Help, thanks:)

Find the domain of f(x) = 1/ (square root 2x^2-7x-15) I tried setting 2x^2-7x-15 greater or equal to zero but I don't know where to go from there to solve for my domain. Help please!:)

asked by L.Bianchessi on March 11, 2012

Prepare a one-page description of your plans to solve the problem for one of the following research studies. Use the following headings for the problem:

asked by Robin on April 8, 2014
14. ## chemistry

on my selected thermodynamic data i cant find delta H for SiCl4(L) (i can solve the reaction i just cant figure out what SiCl4(L) is.

15. ## Math

If two circles have the same radius, is having the combined area of the two circles the same as having twice the circumference? This has been bothering me for the past hour and I cant seem to solve it. It would seem likely to be the same.

asked by Naleena on January 19, 2017
16. ## chemistry

Problem: how many grams of oxygen combined with 15 grams of nitrogen are in the compund N2O? Please explain how to solve.

asked by Anonymous on March 22, 2010
17. ## math

how would you solve a problem where someone drinks 4 to 7 sodas per week. What is a reasonable number of sodas they will drink in 8 weeks?

asked by Mattie on April 25, 2011
18. ## Math

Can you please help me solve these problemss: 1. _____mL= 1 dL 2. _____dg= 1 dag 3. _____cL= 1 hL 4. _____cg= 1 dag 5.______daL= 1 kL 6. _____hm= 1 km

asked by Mondrea on November 6, 2008
19. ## Calculus

asked by Paul on July 22, 2010

1. The ordered pairs (1, 1), (2, 8), (3, 27), (4, 64), and (5,125) represent a function. What is a rule that represents this function? Y = x Y = 4x Y = x^2 Y = x^3 I don't know how to solve this please help!

asked by Charlotte on November 7, 2013
21. ## Calculus

Find a number X such that the error is less than X (The error is 14593/2340 for the sequence, 7n/(n^3+1). How would you start to solve this problem?

asked by Jacob on May 11, 2009
22. ## Algebra

Solve the equation and check for extraneous solutions. 10^((x^2)+1)=100,000 How do i handle this when the exponents have exponents?

asked by Brittney on April 30, 2011
23. ## algebra

The formula k=0.5mv^2 relates the kinetic energy of a body to its mass m and speed v. Solve the formula for m.

asked by kareem on September 1, 2008
24. ## calculus

How many critical points does the function: (x+2)^5 * (x-3)^4 have? How would I solve this quickly? The answer says something about an effect of multiplicity of the zeros of the function?

asked by Mira on April 22, 2011
25. ## to annonymus can you help me with math

How do i solve inequalitites with three variables. I still can't figure it outplease help. x+y=1 y-z=-3 2x+3y+z=1 the answers are 3,-2,1 how do get there by solving linear equations with three variables. 5x-2y-z=2 -y+2z=11 x+y+z=-3

asked by Jasmine202005 on October 22, 2006
26. ## Algebra 2

I have to add this rational expression but I keep on ending up with 2 different answers each time I try to solve the expression. 2/x + 1/2x My answer is 4x+1/2x; but I also got 5/2x. Which one is correct and why?

asked by Jerry on September 12, 2015
27. ## math

what is the constant variation 3.2x+3y=6 4.3x-1=7y-1 write each lineat equation in slope intercepy form 1.x=-2y-7 solve the equation 1.x-15=27

asked by erik on October 20, 2008
28. ## Math - Exponentials

How do I approach the following problem. Please don't give answer but just guidance as to how to approach these in general. I need to be able to solve without a calculator. 3^(2x+1)-16(3^x)+5=0

asked by Semja on December 13, 2011
29. ## ap calc

let f(x)= bx^2+6x, if x< or equal to 2 ax^3, if x>2 find the values of a and b such that f(x)is differentiable at x=2 I need help with this question I know you have to set both functions equal to each other. but I don't know how to solve for a and b

asked by Anonymous on November 9, 2014

c (circumference) c=pie d where d is the diameter. How do i find d to the nearest hundredth when c=39cm? and i have to solve the formula C=pie d for d.

asked by tito on October 14, 2008
31. ## algebra 1

the question is: What is the sum of 5 radical 7 and 3 radical 8? i don't understand how to solve this because i cant pull out a perfect square

asked by lauren on June 17, 2010
32. ## mathematics for management

helo sir/madam can u help me to solve this problem find the value of x in terms of b of the equation logb 2x-logb(x+2b)=1

asked by amy on April 15, 2014
33. ## trig

determine the solutions for tanxcos^2x-tanx=0 in the interval XE[-2pi,2pi] Ok, please describe the steps to me that you used to solve this! thank you

asked by Anonymous on April 27, 2009
34. ## Math

How many feet are in 2 3/4 miles? (Hint: 1 mile=5280 feet) How do I write a proportion to solve this problem. Please help, thank you.

asked by Plse Help on March 5, 2008
35. ## PHYSICS

Identify/name at least 1 biological science problem and prepare on how procedure on how to solve such problem then recommend solutions.

asked by ASAP on December 4, 2013
36. ## Chemistry

ln p2/368.3 mm Hg = -24900 J/mol / 8.314 J/k mol [1/259.7K - 1/247.4K] I am having trouble doing the mathto solve for p2.

asked by Hannah on February 5, 2012
37. ## Math

how to factor this equation algebraically? 2a^2-84a+70 Thank you for helping me and any help given will be greatly appreciated. And to solve this you probably have to use the factor theorem.

asked by Jessica on July 17, 2010
38. ## Calculus

What is the smallest possible slope for a tangent to y=x^3 - 3x^2 + 5x? (I'm unsure how to approach this problem, if you know how to solve it, please explain step by step. THANK YOU!!!)

asked by Suzy on November 28, 2014
39. ## Math

Reasonableness. Use the clues to solve the. Riddle. I am between 24and34. You say my name when you count by twos from zero. You say my name when you count by fives from zero. What number am I? 20 21 22 23 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39

asked by Harry on November 22, 2011

I kinda need help with this 10.Write a real world problem that you can model with the two step equation 5x+7=10. Then solve the problem.

asked by Thili on November 18, 2016
41. ## MATH

Ella ordered 16 pizzas for a p. After the party,, there were 3 5/8 pizzas left. How much pizza was eaten? solve the problem

asked by RAJ on April 4, 2014
42. ## Math

I'm trying to enter this so it shows up to what I need, but I need to know how to solve for the missing Letters: ABCD X 4 ---- DCBA It reads ABCD times 4 and the 4 is under the D.

asked by Tyler on December 6, 2007
43. ## Chemistry

If a certain gas has a density of 2.34 g/L at 27.0C and 742 torr, what is the molar mass of this gas? I am not sure what formula to use to solve this problem.

asked by Thao on April 27, 2011
44. ## Algebra 2

Solve -x^2=4x by graphing. If exact roots cannot be found, state the consecutive integers between which the roots are located.

asked by Benny on May 28, 2008
45. ## BIOLOGY

Identify name at least one biological science problem and prepare a procedure on how to solve such problem then recommend solutions.

asked by Angela on December 7, 2013
46. ## math

Could someone help me solve this Absolute Equation? Please? I really can’t figure it out and I would really appreciate any help... Question~~ Evaluate the given expressions when a = 3, b = -3, c = 4, and d = -1 (a/c)|c| + b – d My answer~ (a/c)|c|+b-d

asked by Abby on October 5, 2015
47. ## math

Find x 1) 6log(down)10 x=1.6 2) e^-4x=1.943 3) 1.3x10^-4 x=4.7/x -6.3x10^-3 4) 6lnx=1.6 5) x^2¡Ñ23y^2 = 1.78x10^32¡Ñz please help I really can't solve this problem.

asked by Kevin on August 30, 2015
48. ## Math

a lottery game has balls numbered 1 through 19. What is the probability of selecting an even numbered ball or a 4? Its hard one please anyone know how solve?

asked by jacqueline on August 27, 2015
49. ## math

Given the formula A = ðr2, find the area (A), of a circle whose radius is 34,500,000,000 m. how do you solve?

asked by krysta on March 1, 2012
50. ## Math

Ok, I'm lost on this.... The equation D=1.2 gives the distance, D in miles that a person can see to the horizon from a height h in feet. Solve this equation for h

asked by Sahara on May 23, 2008
51. ## rational expressions

1)Can z+6/z+1 be reduced any further? 2)Add and simplify (v/v^2+8v+16) + (4/v^2+7v+12) 3)For this second binomial do you change the the sign of the second term? Subtract and simplify (1-y/y-2) - (9y-8/2-y) 4)Solve (4/5)+(1/2)=(1/x) 5)(8/x)=(9/x)-(1/2)

asked by jose on May 31, 2010
52. ## math

1)Can z+6/z+1 be reduced any further? 2)Add and simplify v/v^2+8v+16 + 4/v^2+7v+12 3)For this second binomial do you change the the sign of the second term? Subtract and simplify 1-y/y-2 - 9y-8/2-y 4)Solve 4/5+1/2=1/x 5)8/x=9/x-1/2 Thanks!

asked by jose on May 31, 2010
53. ## Another Algebra (urgent!)

Find A if the graph of the equation Ax + 3y = 5 is parallel to the graph of 5x - 2y = 4 I tried to solve the problem, but I couldn't really get a good answer. Thanks!

asked by Bella on January 14, 2009
54. ## math

solve algebraically, express the roots in exact form 2sinxcosx-1=0 I got: 2sinxcosx=1 sin^2x=1 what do I do next? thanks in advance

asked by sh on March 1, 2009
55. ## Physics HELP!!!!!!!!

In exercising, a weight lifter loses 0.100 kg of water through evaporation, the heat required to evaporate the water coming from the weight lifter's body. The work done in lifting weights is 1.30 x 10^5 J. (a) Assuming that the latent heat of vaporization

asked by Mary on April 18, 2007
56. ## chemistry

Can someone please help me with this problem? An iron nail placed in a beaker with a solution of silver nitrate will cause pure silver to collect on the bottom of the beaker. Write a balanced equation for the reaction that occurs. This is what I have so

asked by Donna on February 28, 2007
57. ## Accounting

Cost Allocation is a method to identify and distribute indirect costs. Direct costs are costs assignable to a specific cost objective, whereas indirect costs are costs incurred for multiple cost objectives or not assignable to a specific cost objective

asked by April on February 25, 2011
58. ## social studies Hinduism

Looking for information on hinduism: 1) Considering that Hiduism lacks a united belief system, what makes up the hindu religion? 2)What are the cultural and societal influences that have made hinduism vital to the region in which it originated? 3) Explain

asked by sue on March 9, 2007
59. ## java/programming

i did this code for this question. Write a class called PocketChange that models a handful of change you might find in your pocket. The class has the following specifications: • Instance Variables - all instance variables are private! - int toonies - the

asked by Anonymous on December 6, 2018
60. ## Physics question

mass 0.3kg is moving on the ground at speed 4m/s towards ball B which is at rest on the ground and has mass of 0.8kg. When A collides with B the ball remains in contact for 0.2 sec after the collision B moves forward with a velocity of 1.8m/s find the

asked by Amy on January 10, 2018
61. ## Physics HELP!

A solid, horizontal cylinder of mass 11.0 kg and radius 1.70 m rotates with an angular speed of 5.10 rad/s about a fixed vertical axis through its center. A 1.21 kg piece of putty is dropped vertically onto the cylinder at a point 0.600 m from the center

asked by Mia on November 6, 2012
62. ## health care

You’re an inpatient coder in a hospital. You’ve just coded a Medicare Part A record with a diagnosis related group (GRG) reimbursement of \$12,000. You notice in the hospital’s computer billing system that the patient’s charges are \$19,500. That’s

asked by Anonymous on June 25, 2010
63. ## physics

Now a new block is attached to the first block. The new block is made of a different material and has a coefficient of static friction μ = 1.01. What minimum mass is needed to keep the system from accelerating? m1=8.8kg theta=34 k =159N/m tension in rope

Lakie uses a perpetual inventory system. Ending inventory consists of 500 units, 400 from the July 28 purchase and 100 from the Dec19 purchase. Determine the cost assigned to ending inventory and to cost of goods sold using (a) specific identification, (b)

asked by norma on June 11, 2010
65. ## Physics

Hello im kinda new here and hoping someone can help me with this energy conservation question (I believe). A 2.10g- bullet embeds itself in a 1.30kg - block, which is attached to a spring of force constant 770 N/m . 1) If the maximum compression of the

asked by Charles on November 19, 2009
66. ## physics

Two boxes are connected by a weightless cord running over a very light frictionless pulley as shown in the figure. Box A, of mass 8.0 kg, is initially at rest on the top of the table. The coefficient of kinetic friction between box A and the table is 0.10.

asked by qais on October 14, 2016
67. ## physics

A 15-kg block is on a frictionless ramp that is inclined at 20° above the horizontal. It is connected by a very light string over an ideal pulley at the top edge of the ramp to a hanging 19-kg block, as shown in the figure. The string pulls on the 15-kg

asked by Mazdaly on April 15, 2015
68. ## operating a car

Which one of these statements is true about a "bumper-to-bumper"waranty. A.Normal wear and tear is NOT covered by the warranty. B.All expenses expect gosoline and routine oil changes are covered by the warranty. C.Everything part and system is covered

asked by Ciara on October 13, 2011
69. ## physics

A solid, horizontal cylinder of mass 12.0 kg and radius 2.30 m rotates with an angular speed of 6.70 rad/s about a fixed vertical axis through its center. A 1.60 kg piece of putty is dropped vertically onto the cylinder at a point 0.600 m from the center

asked by Anonymous on November 11, 2012
70. ## computer network

Any experts in communications/information theory can help me on this? Consider a fiber optic communication channel with cross over probability of 10^-2 and a wireless mobile channel with erasure probability of 10^-2. Calculate the mutual information

asked by victor on September 24, 2007
71. ## Physics

A turntable of radius 2m rotates freely about a fixed vertical axis. A child 19 kg is standing on the turntable right at the outer edge and the system is initially rotating at an angular speed of 0.5 rev/s. The child then moves to position 1m from center

asked by Brittany on February 12, 2012
72. ## law,help

any suggestions will really help or ideas....thanks .... Which is more effective, street justice by police or processing juveniles through the court system? It depends on what you mean by street justice. If you mean early intervention in neighborhoods, it

asked by kyln on March 8, 2007
73. ## U.S History

1) Air pollutants can do all of the following EXPECT: A) damage the respiratory system B) enter the bloodstream and harm other parts of the body*** C) cause discoloration to your hair D) reduce your protection from the sun's radiation 2) Biodegradable

asked by HELP PLZ on May 23, 2016
74. ## bio

I did a pig dissection , but i am not to sure about these questions, any help would be great ! 1. The lungs of a fetal pig serve as a protection for what important body organ 2. The respiratory system is located on the ventral side of the pigs body, what 3

asked by Annie on January 22, 2012
75. ## Social Studies

What factors made the Tang capital of Chang'an a center of culture and trade? Select all that apply. A. It welcomed foreigners and their beliefs. B. It based its trade on the merit system. C. It was the center of silk production. D. It was located at one

asked by Lou on November 8, 2018
76. ## language

Analogies 1. war:peace::soldier:_____________ marine, captain, conscientious objector, sailor 2. piccolo:flute::violin:_______ cello, saxaphone, trumpet, bass drum 3. strengthen:build up::atrophy:_______ circulatory system, death,muscles, waste away

asked by Hayden on April 10, 2013
77. ## english

Create a 3-5 page Request for Proposal (RFP) for bringing in outside trainers to train staff on the use of Microsoft Office® programs. # General overview of the RFP # The business requirements for the project, including the specific items (products and

asked by tom on March 3, 2009
78. ## Cost Accounting

Case 1 Direct Materials Used \$8,300 Direct Labor 3,000 Manufacturing Overhead 6,000 Total Manufacturing Costs (a) Beginning Work in Process 1,000 Ending Work in Process Inventory (b) Sales 22,500 Sales Discounts 1,500 Cost of Goods Manufactured 15,800

asked by Renee on June 27, 2009
79. ## English 7 - Journal Entry Check

Please check my journal entry to see if it's good and if there any grammar mistakes. This is an assignment for English. Art Therapist When I was doing some research on the computer two weeks ago, I saw the word "art therapist". For a moment I thought being

asked by Laruen on May 17, 2012
80. ## History- American Indians

I've been trying to do this homework problem for hours, and I am very confused on where I should start. Can I please receive some help. I am suppose to characterize the positions of assimilation, acculturation and cultural pluralism. I thought they were

asked by Svetlana on March 5, 2012
81. ## English

WHICH OF THE FOLLOWING SENTENCE INCORRECTLY USES A COMMA? A.We had to decide among steak,lobster, and pork roast. B. Before we could enter the building ,we had to show our identification badges. C. The car that was used as a demonstration in the race,is

asked by shayla on August 6, 2008
82. ## Calculus

After an hour of googling this as you suggested, I still can't find the discussions or proof you were referring to. Can you please either send the link you found or help me with this? I don't know how to even start it. Prove that the function defined by:

asked by Anonymous on April 7, 2017
83. ## MATH

Posted by polly on Wednesday, November 19, 2008 at 9:46pm. i am in the 6th and learning but stuck on this big one. NANCY IS GOING ON A TRIP THAT COST 4800.00 PLUS 216. FOR TAX SHE IS DEPOSITING 1200. SHE WILL PAY IT OFF IN 24MONTHS WHAT ARE HER PAYMENTS? i

asked by polly on November 19, 2008
84. ## Geometry/Trig

In triangle ABC, A is a right angle, and m b=45 degrees. What is the length of BC? If your answer is not an integer, leave it in simplest radical form. a. 16 ft b. 16 sq 2 ft c. 16 sq 3 ft d. 32 ft I'm really confused as to how to do this... Could someone

asked by Gina on May 3, 2016
85. ## physics

A 4.7 g bullet is fired horizontally into a 0.50 kg block of wood resting on a frictionless table. The block, which is attached to a horizontal spring, retains the bullet and moves forward, compressing the spring. The block-spring system goes into SHM with

asked by Tom on June 28, 2012

Please edit my answers below the questions for correct sentencing In the following statement, a business owner attempts to explain and justify his slow growth in his business. I limit my growth pace and every effort to service my present customers in the

asked by Terry on June 6, 2013
87. ## Statistic

I’m having problems creating the flow chart, so I am unable to insert the numbers. This is what I have done this far, and I’m not sure if I’m accurate with the calculations. (1) A school cafeteria is operated by five persons performing the activities

asked by JJ on October 6, 2012
88. ## Pre-Calculus

The logistic growth model p(t)=0.90/1+3.5e^-0.339t relates the proportion of new personal computers sold @ Best Buy that have Intel's latest coprecessor t months after it has been introduced. a) what proportion of new personal computers sold @ Best Buy

asked by Erica on October 19, 2006
89. ## Physics

We have to work out the accepted value of a roller coaster cart (taking into account friction) when the mass is modified Here is the answer I got for 56.71 grams: 0=∆EGP+∆EK+Fd 0=mg(hf-hi )+1/2 m(v^2-u^2 )+Fd 0=0.05671 × 9.8 (0.075-0.786)+1/2×

90. ## Physics

A room has a volume of 120 m^3. An air-conditioning system is used to replace the air in the room every twenty minutes, using ducts that have a square cross ection. Assuming that air can be treated as an incompressible fluid, calculate the length of a side

asked by ALan on March 16, 2010
91. ## Information Technology (2 Qs)

1) Order the following components in order of their speed starting from the fastest, and ending with the slowest: CD, Random Access Memory (RAM), Tape, Cache. 2) A computer system may have an extremely fast process, and extremely fast memory, yet the

asked by nutz on January 8, 2013
92. ## History

What was the Columbian Exchange? A. The exchange of new goods globally as a result of European exploration B. A trading post established by Christopher Columbus C. An economic system set up by Christopher Columbus in the Americas D. The trading of goods

asked by Sarah on April 20, 2016
93. ## College Physics

A uniform horizontal rod of mass M and length l rotates with angular velocity w (omega) about a vertical axis through its center. Attached to each end of the rod is a small mass m. Determine the angular momentum of the system about the axis. Write you're

asked by Daniel on October 20, 2012
94. ## physics

A 11.0 g bullet is fired horizontally into a 108 g wooden block that is initially at rest on a frictionless horizontal surface and connected to a spring of constant 151 N/m. The bullet becomes embedded in the block. If the bullet-block system compresses

95. ## Chemistry

1.) A convenient method of determining the volume of a container of irregular shape is to fill it with a liquid of known density and measure the mass. An empty Erlenmeyer flask marked "10 mL" weighs 26.3251 g. When filled with mercury, with density =

asked by Amy on September 10, 2012

If no friction acts on a diver during a dive, then which of the following statements is true? A) The total mechanical energy of the system increases. B) Potential energy can be converted into kinetic energy but not vice versa. C) (KE + PE)beginning = (KE +

asked by Amaya on February 27, 2012
97. ## Writing

Prompt: Many communities are considering adopting curfews for high school students. Some educators and parents favor curfews because they believe it will encourage students to focus more on their homework and make them more responsible. Others feel curfews

asked by Anonymous on August 6, 2013
98. ## History

Question 1 In the late nineteenth and early twentieth centuries, European nations formed alliances in order to __________. keep peace on the continent

asked by Dee on November 13, 2015
99. ## popular american culture

please forgive me just was typing in cap no disrepected to anybody. i need a good example of how to rewrite this fragment sentence the endeavor to influence a specific audience to buy a goods or service or a specific belief i need someone just to show me

asked by KATRINA on February 3, 2010
100. ## mechanics_ physics

1.20kg mass is dropped from a height of 0.9M unto a spring with force constant K= 120N/m and negligible mass. Find the maximum distance the spring will compressed pls show full working and indicate formular.

asked by precious on January 6, 2013