# math..solve for u again

159,056 results, page 85

1. ### math

Are the two solutions to x (2x+1) = 1 found by setting x = 1 and 2x + 1 = 1? Explain your reasoning. What are the solutions to this equation? Show how you arrived at your answer. Create an equation for your classmates to solve that requires factoring.

how do I solve for this: If 5/6 is divided by a certain fraction, a/b, the product is 1/4. What is the fraction a/b? Ans: (5/6)/(a/b) = 1/4 = do i need to divide both sides by 1/4 to get (5/6)/(1/4) = (5/6)x(4/1) = 20/6 = need to somehow get a/b by itself not sure what to do...
3. ### Math Check

Hi! Can someone check my answers? Thanks! Directions: Solve each system by using the elimination method. Make sure to write your answer in (x,y) form. 1.) 3x-5y=2 2x+5y=13 2.) 3x+11y=4 -2x-5y=9 My answers: 1.) (3,7/5) 2.) (-17,5)
4. ### math practice help

add or subtract (2x^2+6x+1)+(-7x^2+2x-3) 5x^2-4x-2 -5x^2+8x-2 5x^2-8x+2 -9x^2-8x+2 (3x^2-7x-4)-(6x^2-6x+1) -3x^2-x-5 -3x^2-13x+5 9x^2-x+5 3x^2-13x-5 These are just practice problems. could someone help me figure out how to solve them and explain how they got the answer? @Steve...
5. ### algebra/ math

Solve the problem. Leave the answer in exponential notation. The expression 2^6 x64^t approximates the number of bacteria after t hours. After 1/2 hr, how many bacteria are those? is it 2^6..
6. ### Math

Determine which system below will produce infinitely many solutions. A.-6x+3y=18 4x-3y=6 B.2x+4y=24 6x+12y=36 C.3x-y=14 -9x+3y=-42 D.5x+2y=13 -x+4y=-6 Solve the system of equations. x + 3y = −1 2x + 2y = 6 A.(-4,1) B.(2,-1) C.(4,-1) D.(5,-2) I think the answers are B for...
7. ### math

Write an equation with a variable on both sides of the equal sign that has infinitely many solutions. Solve the equation and explain why it has an infinite number of solutions. I have no idea?
8. ### Math

Solve the proportion: Jose purchased a new pair of jeans from the clearance rack for \$41.25. The original price marked was \$75. What was the total discount that Jose received in the jeans?
9. ### Math

The average 3rd grafe student can read 60 words in 5 min. What is the average rate per minute? Write an expression to represent the problem. And solve the problem:
10. ### Math

2 similar quadrilaterals are shown below. Line ML equals 12cm. The ratio of the lengths of the corresponding sides MN and ST is 2:3, respectively. What is the measure of RS? I am confused on how to solve for line RS with the ratio and with 12.
11. ### Math

Please lead me in the right direction. I am so confused and I have been working on this one problem for an hour. I have the answer, but I want to know how to get to it. The answer is (1,1,0) Solve the system by elimination. -2x+2y+3z=0; -2x-y+z=-3; 2x+3y+3z=5
12. ### Math

The average 3rd grade student can read 60 words I 5 minutes. What is the average reading per rate? Write an expressionto represent the problem. Solve the problem
13. ### Math

1. All real numbers that are less than -3 or greater than or equal to 5 A. x<-3 or xâ‰¥5*** B. x<5 or xâ‰¥-3 C. xâ‰¤-3 or x>5 D. xâ‰¤-3 or xâ‰¤5 2. The time a cake must bake is between 25 minutes and 60 minutes, inclusive. A. 25<x<30 B. 25...
14. ### Math--algebra 2

Hello! I'm trying to solve these two questions-- |x-4|<3 and |5x-2|>5 and I'm not exactly sure how to answer For question 1 I got this- 1<x<7 and for question 2 I got this- x>(7)/(5) or x<-(3)/(5) I'd love some clarification! Thank you so so much!
15. ### math

Each ticket to a school dance is \$4. The total amount collected in ticket sales is \$332. Write and solve an equation to find the number of students attending the dance.
16. ### Factoring

What does 3x^3-3x+2=0 come out to? How would I solve this? Is the x cubed supposed to be x squared? You can compare the equation with the identity: (a+b)^3 = a^3 + 3 a^2 b + 3 a b^2 + b^3 which you can rewrite as: (a + b)^3 = 3 ab (a + b) + a^3 + b^3 (1) The equation you want ...
17. ### vocab

can scuttle have any prefixes or suffixes or can it be changed into a noun, adjective, or adverb? What are some antonyms of it? Please help i am so confused Thank you for using the Jiskha Homework Help Forum again. Don't be too impatient! The volunteer teachers do not monitor ...
18. ### IMPORTANT MATH NEED HELP NOW!!!

. Evaluate the expression. 2(y + 2) for y = 3 (1 point) –4 8 10 2 2. The cost in dollars of a field trip is 64 + 14n, where n is the number of people attending. What is the cost for 48 people? (1 point) \$736 \$126 \$896 \$910 3. Write a word phrase for p – 4. (1 point) a ...
19. ### Chemistry

Another question on the subject of coins. We have to evaluate another group's metal choices. My friends' group chose gold for the outer layer and zinc inside. Why is zinc a good choice? I know it's relatively inexpensive, but it's soft. Why would someone choose zinc? Thank you...
20. ### language arts

Could you check my answer please..thank you Which of the following sentences contains a linking verb? A. Yesterday, Sarah experienced rock climbing for the first time.xxx B. Sarah seemed nervous at first. C. She climbed very well for a beginner. D. I think Sarah wants to go ...
21. ### Math

Mrs. Chans math class contributed 2 dollars and \$1 coins to an earthquake relief fund. the number of \$1 coins contributed was 8 less than 5 times the number of \$2 coins contributed. if class raised total of 160 bucks, how many coins of each type was collected? it says i have ...
22. ### Chemistry

Calculate the molar solubility of BaSO4 in a solution in which [H3O+] is 2.5 M. I can almost solve this on my own. If you know the following equations: BaSO4 = Ba2+ + SO42- SO42- + H+ = HSO4- HSO4- + H+ = H2SO4 and I know [H+] = 2.5 M along with the following equation: [Ba2...
23. ### English

Hello. I'll be grateful for your help. 1)Is it possible to use "deal with" in the same meaning as "solve" in the context "I hope they will solve the Middle East conflict"? 2)Which is the correct position of the preposition in the sentence "the region has been aspiring to ...
24. ### Math 222

I am having difficulties trying to do rational expressions. I have to use the words Domain, Excluded Value, Set, Factor, and Real Numbers to show how I got the answer. Can someone please help me solve this one? g^2-6g-55 ___________ g
25. ### Math

1. What is the surface area of the cylinder in terms of pi? The diagram is not drawn to scale. A) 990 pi in^2 B) 342 pi in^2 C) 378 pi in^2 D) 504 pi in^2 The radius is 9 and the height is 19. when I solve this, no matter what the formula is, I always get 523, which means ...
26. ### Math

Solve the equation using square roots 2x^2-128=0 A. -sqrt8, sqrt 8 B. -64 or 64 C. -8 or 8 D. No real number solutions I am stuck between A and C and i also have another problem similer to this one and its the same thing i am confused as do i leave the sqaure root on or no.
27. ### math-followup

A bag got mix up 6 pairs of shoes – 2 red, 2 blue, and 2 purple. Picking randomly in the dark, how many shoes must I pick before for sure that there is one matching pair in red or blue? Ms Sue answered 4. Request for explanation please. math - Ms. Sue, Tuesday, January 29, ...
28. ### geometric

The perimeter of a rectangular carpet is 70feet. The with is three -fourths the length .Find the width. 38. The length of a rectagular room is six times as the width . The perimeter 84 yards. find the width. 39. The width of a rectangle is 12 less than the length. The ...
29. ### Computer Science - MATLAB

thanks mathmate. It's way above my head to. I got another question Consider the following two equations: x^2 + y^2 = 42 x + 3y + 2y^2 = 6 Define a symbolic equation for each, and solve it by using MATLAB's symbolic capability. Could you solve these equations by using matrices...
30. ### math

please help!!I've been staring at this forever!! 1. Every year, Annie makes a graph showing the amount in her bank account over time. Sketch a graph showing the amount in her bank account over time from the description given. Draw a separate graph for each description. Explain...
31. ### Algebra 2345678!!

Solve the system of equations using the Addition method. 2a + 3b = -1 3a + 5b = -2 The addition method tells you to find common multiples of a coefficient, then add the equations together to eliminate a variable. If you multiply the first equation by 3 and the second by -2 you...
32. ### need help math

Solve the problem. Roberto invested some money at 7%, and then invested \$2000 more than twice this amount at 11%. His total annual income from the two investments was \$3990. How much was invested at 11%?
33. ### Math 101

1. Best Rentals charges a daily fee plus a mileage fee for renting its cars. Barney was charged \$123.00 for 3 days and 300 miles, while Mary was charged \$216.00 for 5 days and 600 miles. What does Best Rental charge per day, for mileage? 2. There were 44,000 people at a ball ...
34. ### French

Food script I had to do for French. Involves two people. Can someone please check it and give feedback if something is incorrect. 1. Bonjour monsieur. 2. Bonjour garcon. 1. Vous desirez? 2. Je voudrais le poulet frit avec jus de raisin. 1. Très bien, monsieur. /he goes get ...
35. ### math

solve the equation 1. squareroot of 2x+1+4=3 2.x= squareroot of 12-x 3.squareroot of 5x-2=3 4.x=squareoot of 9x-14
36. ### Math

Solve: sqrt(7x-5)+sqrt(15x+4)=sqrt(30x+31)
37. ### Math

Solve: sqrt(7x-5)+sqrt(15x+4)=sqrt(30x+31)
38. ### math

F6P = 0.504(1.3 − F6P) -solve for F6P?
39. ### Math

6cos^2 theta + 5cos theta=1 Solve for theta
40. ### easy math

√(100 - 20√5 + 5 + 15 - 6√15 + 9) solve.
41. ### Physics

I posted this earlier and no one responded so I am going to try again. I have to Distinguish between atomic physics and nuclear physics, so here is what i have. which deals with the atom as a system of electron(s) and a nucleus and nuclear phys
42. ### CHEM

To identify a diatomic gas (), a researcher carried out the following experiment: She weighed an empty 1.00- bulb, then filled it with the gas at 1.10 and 23.0 and weighed it again. The difference in mass was 1.27 . Identify the gas. Express your answer as a chemical formula.
43. ### Anonymous: Re: Grammar

I checked the first 25 answers you posted for your 50-question grammar test. You have 10 of the 25 wrong for a 40% score. I couldn't take any more! Please do not post this test again. I'm sure your instructor does not want the test posted in a public forum.
44. ### CHEM

A balloon contains 3.3 liters of nitrogen gas at a temperature of 90K and a pressure of 101 kPa. If the temperature of the gas is allowed to increase to 25∘C and the pressure remains constant, what volume will the gas occupy? V=_____L? Ty again!
45. ### Help me again in stats

Find the corresponding z-score to the given value and determine whether the value is unusual. A weight of 225 pounds among a population having a mean weight of 161 pounds and a standard deviation of 23.0 pounds.
46. ### math

Of the 1st graders who were asked, 1/6 like math best, 2/3 like reading best, and 12 like science best. How many first graders were asked their favorite subject? THINK: Into how many equal parts should the picture be divided? Draw a picture to solve the problem.
47. ### math

Of the first graders who were asked, one sixth like math best, two thirds like reading best, and 12 like science best. How many first graders were asked their favorite subject? Please provide a "Draw a Picture" strategy to solve the problem.
48. ### Geometry

how do you solve using midpoint equation if you only have one pair of points? like to use midpoint equation you usually get two points (4,3) and (5,2) but ive been given only one point (3,1). how do i solve for midpoint with only one set of points? help please
49. ### math

Please solve this word problem, It will take at least 360 points for Kiko"s team to win the math contest. The scores are 94,82, and 87, but one of Kiko's teammates lost 2 of those points for an incomplete answer. How many points must Kiko earn for her team to win the contest?
50. ### physics

Four tubes are set up in the lab at sea level as shown by the figure. The letter under each tube corresponds the question with the same letter. 1 atm = 101300 Pa = 101300 N/m2 ρwater = 1000 kg/m3 (a) What is the pressure pushing down on the surface of the water in tube (a...
51. ### Algebra 1

11) Tell which real number corresponds to the situation. During a quiz, a person loses 1800 pts. answer: -1800 12) Solve for y z=yq Answer: z-q=y 13) Solve using the multiplication principle 10x=-90 Answer: x= -9 14) Collect like terms 20w+w+14/19w Answer: 413w 16) A mountain ...

1) Solve the equation: 15(7x-6) = 3x-5 My answer is (-85/108) 2) Mary and her brother collect coins. Mary has 4 times the number of coins that her brother has. Together they have 175 coins. How many does Mary have? My answer is 140 3) Perform the indicated operations. Express ...
53. ### art

hello me again! i am now looking at the wounderful painting of "little blue horses" by Franz Marc, dose anyone know any good websites where i can find the background history of this painting! i would be very greatful, an also if anyone konws of any quotes that i could use e.g...
54. ### Mathforme

5. 4x + 2 = x + 8. (1 point) x = 4 x = 3 x = 2 x = 1 Solve the inequality. 6. q – 12 ≥ –13 (1 point) q ≥ 1 q ≥ –1 q ≥ 25 q ≥ –25 7. 12p < 96 (1 point) p < 8 p < 108 p < 84 p < –8 8. < –18 (1 point) g < –23 g >...
55. ### kbMath

5.   4x + 2 = x + 8.  (1 point) x = 4 x = 3 x = 2 x = 1 Solve the inequality. 6.   q – 12 ≥ –13  (1 point) q ≥ 1 q ≥ –1 q ≥ 25 q ≥ –25 7.   12p < 96  (1 point) p < 8 p < 108 p < 84 p < –8 8.    < –18...
56. ### Math

HELP?! 1.-9^2 2.(5x^9y)(-2x^-2y^-3) 3.(a^1b^-2) / (a^-2b^4) 4.(7x^-1/y^4)^-2 Scientific notation: 5) .0000745 Decimal Form: 6) 9.3*10^6 Solve: 7.3√-27 8.√(-5a)^2 Simplify: 9.√60x^5y^2 10.√75x^3 / √3x
57. ### Math

solve log(7x-3)+2log(5)=2+log(x+3) I've attempted to do this question and I ended up with log(7-3)+log(5^2)-log(x+3)=2 but I don't what to do next or whether I did something wrong.
58. ### math

(4 − 2x)−2 x=-2 y=4 z=-3 how do you solve this? i have solved it and gotten 6 for my answer many times and it says it's wrong. other equations are (y − z)−3 and (x − 5y)0. i cant get them right
59. ### Precalculus

This is for solving exponential/logarithmic functions: (This is a base e Logarithmic function I would assume): e^(4x)/10 =4^x-2 ? I understand the properties of logs for the most part, but I have a hard time figuring out the step-by-step process on how to solve exponential/log...
60. ### RE: PHYSICS

A stationary block explodes into two pieces L and R that slide across a frictionless floor and then into regions with friction, where they stop. Piece L, with a mass of 2.0 kg, encounters a coefficient of kinetic friction µL = 0.40 and slides to a stop in distance dL = 0.15 m...

Hi. economyst. Thanks for your help with my other questions. But I am still stuck with this question: @@@@My question: Rain is an amazing singer, but cannot play any instruments. He desperately wants a rock band that has a drummer, a guitarist, a bass player, and himself on ...
62. ### math

please hel me to solve the following application. Crafts. Mark uses 1 pt 9 fl oz and then 2 pt 10 fl oz from a container of film developer that holds 3 qt. How much of the developer remains? Is this US liquid measures? There are 16 fluid ounces to the pint, and 2 pints to the ...
63. ### math

In the xy-plane, line l passes through the origin and is perpendicular to the line 4x+y=k, where k is a constant. If the two lines intersect at the point (t,t+1), what is the value of t? I tried drawing a picture of the problem described above, but I don't understand what I ...
64. ### Math

240 m of fencing material is going to be used to enclose three sides of a rectangular lot. What should the dimensions of the lot be so that the enclosed area is as large as possible? (I'm supposed to solve this using a quadratic equations but I don't know how...)
65. ### Math

Hi. So we had a long test with this question.. I was wondering how to solve it? Coz our teacher didn't discuss the answers.. and most probably we'll have the same type of question during midterms.. Find the Solution Set 9/|2-5x| - 4/y^2-3y = 5 2/|2-5x| + 2/ 3(y^2-3y) = 1/3 ...
66. ### algebra

Solve the quadratic equation 2x to the 2nd power -3x-2=0using the quadratic formula. Read the information in the assignment list to learn more about how to type math symbols in MS Word, such as the square root.
67. ### math

If h=6, the IVP becomes dP/dt=P(7-P)-6, P(0)=Po Solve the IVP in implicit form though you should apply initial conditions. How small does Po have to be for the population to become extinct in finite time? explain using phase portrait.
68. ### Math- Exponent Laws.

Simplify, "put the power into a single positive exponent." -(-2)^0*(-2)^3*(-2)^-4/(-2)^3 please help I am so lost on how to solve this problem!! I have been trying to figure it out for days. the - in front of the (-2) is very confusing.
69. ### Math C30

Does anyone know a simple way to solve identity problems? Is there a good wedsite I could learn from? I am having a really hard time with them because of the many steps involved in the way that I have been shown. (FOIL, common denominators, etc.)
70. ### Math

Please help me solve this problem: My great-grandfather invested \$ 9. in a savings account in 1909. The amount of money in the account doubles every nine years. QUESTION; WHAT YEARWILL IT BE WHEN THE VALUE OF HIS INVESTMENT HITS \$1 MILLION?................
71. ### Math Question

To solve this problem, use the Pythagorean Theorem to find the third side. Next, find the other five trigonometric functions of theta (sin, tan, csc, sec and cot). Cos=5/7
72. ### Math help

Mt. Everest is more than 8000 m high. How fast would an object be moving if it could free fall to sea level after being released from an 4750-m elevation? (Ignore air resistance) How would I solve this?
73. ### math

a customer went to a garden shop and bought some potting soil for 17.50 and shrubs. if the total bill was \$71.00, how much did each shurb cost if they all cost the same? write and solve an equation. show your work
74. ### Math

A right pyramid,with a square base and four equal isosceles triangles ,is cut from a square piece of paper which is 3x cm long.If the area of the shaded part is 54 cm2, find the value of x.Please help me to solve this problem.
75. ### Math

Solve the integral of (x*e^2x)/(1+2x)^2 by first using u substitution and then use integration by parts. I am very confused on how to do u-substitution with this because no mattter what I let u be equal to the du never comes out to be anything in the equation? The correct ...
76. ### math

A cold front moves through your hometown in January, dropping the temperature an average of 3 F per day for 5 days. Write an expression that uses multiplication to describe the changes in temperature from the start to the end. Help solve
77. ### Math

Me, again... Please help me. Thank you. Assume a plane is flying directly north at 200 mph, but there is a wind blowing west at 23 mph. Part I: Express both the velocity of the plane and the velocity of the wind as vectors, using proper notation to represent each direction of ...
78. ### Math

The greater of two consecutive even integers is six less than twice the smaller. Find the integers. Let the smaller be x. That means that the larger is x+2. From your statement x+2=2x-6 Solve for x. I hope this helps. Thanks for asking.
79. ### Math

Is there any one who knows if I am right? Do not solve, show possibilities of Descartes's rule of signs for roots. 4x^3-9x^2+6x+4=0 f(x)=4x^3-9x^2+6x=4 - + + one change =4(-x)^3-9(-x)^2+6(-x)+4 - + - + three changes Positive Negative Imaginary 2 1 0 1 2 0 3 possible roots
80. ### Math

Use the law of cosines to solve ABC with A=126.3, b=45, and c=62.5 I did all the work to find a but my problem is finding B a=96.2 Sin(B)=45sin126.3/96.2 B=Sin^-1(45sin126.3/96.2) It's not going through in my calculator
81. ### math

what percentile score is equivalent to the lower quartile? but here i just have been asked that. like i have not being given any mean or asked to solve one. what do i do?
82. ### Math

Can some one explain the step of the following: 1. Graph the system of Inequalities (What will be the points) y>= -4 x>=5 2. Solve by the substitution method 5x+3y= 7 x=59-7y 3.Graph the equation using the slope and the y-intercept (What are the points) y= 4/3x+3 Thanks....
83. ### Math- CAN SOMEONE PLEASE CHECK MY WORK?

7x+5y=-26 x=28-6y solve using substitution okay so then 196-42y+5y=-26 then combined like terms so 196+37y=-26 37y=-222 y=-6 is this part correct?
84. ### math

1. Consider the following equation. xy + 7x + 5y = –8 (a) Differentiate both sides with respect to x to complete the following. ( blank )y ' + y + blank =0 (b)Solve for y ' in terms of x and y. (c) Calculate dy/dx at the point (4,-4). Can anyone help me on this questions I'm...
85. ### math

If Nefertiti could pronounce her name in six tenths of a second. At that rate, how many times could she pronounce her name in 15 seconds? (write and solve a fraction division problem to answer the question)
86. ### MATH

How can I find the vertex, axis of symmetry? I know to find x and y intercepts i use the quadratic formula. I am given the parabola y=x^2+6x+5 I do not want the answer.. Just please explain to me how to solve for it. what method do I use???
87. ### Math

Ok so you're supposed to solve the system by method of substitution. And the problem is: -2/3x + y = 2 2x - 3y = 6 So i put y= 2/3x into the second equation which looks like: 2x - 3(2/3x + 2) = 6 and then 2x-2x-6=6 So like everything cancels out? So then what do you put as the...
88. ### math

If 10 points are arranged on a circle, how many lines are needed to join every point to every other point once? First solve simpler problems to determine a pattern.

Explain if a triangle with the given lengths is a right triangle. 1. 18, 24, 30 2. 7, 24, 25 3. 13, 14, 15 I really do not know how to solve these problems! I have no idea how!!!! Please help!
90. ### 8th grade math for Ms. Sue

How is an inequality different from an equation? Give a real-world scenario in which you would write an inequality rather than an equation. I don't know how to solve this or what the answer is. Please help!

I have two questions That I need help with please!! 1. solve the following exponential equation. what is the exact solution? what is the decimal approximation when rounded three decimal places? 2.
92. ### math

solve the polynomial inequality and graph the solution set on a real number line. express the solution set in interval notation x^3+x^2+64x+64>0 show work please
93. ### math check answer plz

you earn \$7.50 per hr to help ur uncle in his shop. you earn \$33.75 . write and solve an equation to find how may hrs u worked. I put \$7.50 x hours= \$33.75 and hours is 4.5 is that correct?
94. ### math---help! 1 question

pls help me! 21. Write an equation with a variable on both sides of the equal sign that has infinitely many solutions. Solve the equation and explain why it has an infinite number of solutions. (3 points)
95. ### math

In New York a taxi costs 72 cents for the first 1/10th of a mile and 15 cents for every additional 1/10 mile. How much does it cost to drive 6 miles? Set up and solve? Thanks
96. ### finite math

Using the formula for PV (present value) of an oridinary annuity or the amortization formula to solve this problem. PV=13000 I=.03% PMT=500 n=? I have done it over and over and can't it correct
97. ### SAT Math

9, 13, 17, 21, ... In the sequence above, each term after the first is 4 greater than the previous term. What is the difference between the 105th term and the 99th term? I have no idea how to solve this problem