# math..solve for u again

155,622 results, page 67
1. ## Math

Compute the square footage of carpet needed to cover a room 10' 6" x 12' 3". Area (to the nearest tenth) = square feet. Can you explain the steps on how to solve this problem.
2. ## 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
3. ## Math

8. Sylvia is training for a triathlon. she cycles 6.25 km in 25 min. a) What is her average speed, in kilometres per hour? b) Solve a proportion to determine how long she would take to cycle 40 km. Us the speed in part A)
4. ## math

An amount of money is invested at 12%/a interest. Write an equation and solve it to determine the length of time it will take for the original amouunt to double if the interest is compounded annually.
5. ## Confused-Math

Your calculator gives an answer of x=1.1578074156, y=2E-13 when using ROOT or ZERO in the graphing mode. Give the coordinates of the x-intercept your calculator has given you to the nearest thousandth. <<< ? I have no idea how to solve these.
6. ## math

write and solve a 2 step equation a baseball ticket cost \$20 for each student that attends. there is also a parking fee of\$30 for the bus the total cost of the trip was \$330
7. ## Math/Trig

Given A=56degrees, C=61degrees, and b=10.5, solve triangle ABC. If no triangle exists, explain why. If two solutions exist, write both. Round your answer to the nearest tenth
8. ## Math

Solve the system of equations to find x,y,z (hint let d=x2 e=y2 and d=z2 . Find d e and f first) !!where ever you see 2 it's supposed to be a squared sign. I've seen questions answered similar to this but I don't understand how to get z^2 and y^2

144/k=9 I don't understand how to do this using reciprocals, how my teacher wants me to solve the problem. Note: The fraction bar is in my paper, so it's 144 being the numerator, k being the denominator, and then =9 if that makes any sense.
10. ## math

how do I solve this problem 2x/2=(6-3y)/2? 2x/2=(6-3y)/2? I solved it for you in my initial answer. The 2 in the numerator cancels with the 2 in the denominator on th left side and x = (6-3y)/2 which is the solution of the initial equation you had for x in
11. ## Math

How would you work, and solve this problem? Christa is a waitress and collects her tips at the table. At the end of the shift she has 68 bills, all ones and fives. If the total value of her tips is 172, how many of each bill does she have?
12. ## Math/Trig

Given A=56degrees, C=61degrees, and b=10.5, solve triangle ABC. If no triangle exists, explain why. If two solutions exist, write both. Round your answer to the nearest tenth
13. ## Math

Hi, I need help on this problem:Solve the system of equation by giving an ordered pair for 14x +3y = 115 7x +3y = 80 Use the 3 Methods in your work. Thank You, I am not sure how to use graphing, substitution, and elimination, please show these methods.
14. ## math: pre-calculus

Solve the equation. First express your answer in terms of natural logarithms (for instance, z=(2+ln5)/ln3). Then use a calculator to find an approximation for the answer. 3^x+9=2^x.
15. ## Math

I have three math problems that I have tried to solve but I do not think they are correct. Can someone please help me! 1. What is the product of 225 and 507? I came up with 225 x 507 = 114075 2. Divide by moving the decimal point. 10.5 ÷ 100 I came up
16. ## Math

I am not exactly sure of what I'm supposed to do in the following question: Describe and correct the error, given the functions f(x)=3x - 5 and g(x)=1/3 - 4/3. The first equation is as follows: g(-3)= 1/3 - 4/3 (3) =1/3 - 4 = -3 2/3 The second equation is:
17. ## science

At 472 deg C the reaction reaches equilibrium with the following composition: [H2]=7.38atm, [N2]=2.46atm, [NH3]=0.166atm. Into the equilibrium mixture 1.5 atm of N2 is introduced: a. Calculating Kp and Q, determine in which direction the reaction will
18. ## math

finding the worth of the unit fraction will help you to solve each problem below. 1. if 4/5 of a number is 16, what is 1/5 of the number? 4/5 * x= 16 divide both sides by 4 1/5 x = 4 One fifth of the number is ...four.
19. ## Math

Use the compound interest formula A=P(1+r)^t and the given information to solve for r. A=9,000,000 P=80,000 t=40 I have done this problem over a over and still get the wrong answer.
20. ## math

I can't solve this one: The second term of an arithmetic sequence is 24 and the fifth term is 3.Find the first term and the common difference. How could I get the answers if there's only two given numbers?
21. ## math

I have spent hours trying to do these, help! Use the given information to solve the triangle. 1) C = 145 degrees, b = 4, c = 14. 2) A = 150 degrees, C = 20 degrees, a = 200.
22. ## gr.10 math

could you please show me the steps to solve this equation?I looked at the answer in the back of our textbook but i keep getting the wrong answer. 5(2y+1)-(5y-2) answer=5y+7. thanks so much!
23. ## Math

Solve for the interest acured on a 520 investment after 4 years that has an interest rate of 4.9% per year, simple interest.
24. ## math

i need to integrate: (secx)^4 dx let u = sec x dv =sec^3 x dx Start with this. Then, you will have to deal with the integral of sec. You should be able to solve it after a few steps. Looks a little messy.
25. ## Math check

Solve: sqrt(7x-5)+sqrt(15x+4)=sqrt(30x+31) would I square both sides and then add and subtract I get 4 is that right?
26. ## math

Solve the proportion using cross products. 20 Miles 15 Miles ________ = __________ 50 Miles h Hours Please Answer!!!!
27. ## Math

Did I do this problem correctly? Solve the following system by first handling the equation of the two lines: x=(0, 2) y=(-2, 1) x=(0, -1) y=(-3, -2) Equation 1: y= -x1 Equation 2: y=4x/3+2T Is this the correct answer?
28. ## MATH.

I need help to solve this Equation using the Scientific Calculator Z= Square Root (47 Ohm)2 + (100 Ohm)2= 110 Ohm.
29. ## Math

How do you solve this? I posted this question last night and someone answered but it wasn't the right answer. I have tried so many times and still can't get the right answer. the right answer is suppose to be 15/2 5/6-1/3+ 7/8/(1/2)^3 Thank you for your
30. ## math

Solve each equation and leave the answer in simplest radical form. x squared+6x-9=0 n squared-2n+2=5 3y squared-4y-2=0 I never learned how to do this. Can you help me?
31. ## Math

For questions 1 and 2 choose the equation or proportion that you can use to solve the problem: What number is 73% of 215? A.215 = 0.73 B.n = 0.73 × 215 C.0.73 = nx215
32. ## Math

The tornadoes have won 75% of their games. If they their next 4 games, their win percentage goes up to 80%. How many games have they played right now? (Please explain how to solve this problem)
33. ## math

A test of 60 minutes contains questions on mathematics and english only. the time taken to solve a mathematics question is twice the time taken to answer an english question and the ratio of time taken to solve all mathematics questions to time taken to
34. ## Chemistry

Please Help!! I don't know how to balance this redox equation! I've been trying to solve this for hours and I'm getting nowhere Fe(s) + HClO4 (aq) --> H (g) + FeClO4 I tried balancing and I got these Fe(s) + HClO4 (aq) --> H2 (g) + Fe(ClO4)3 and
35. ## Math

how would I solve 3 square of 6 times square of 6? Sorry, I don't know how to make radicals. Square of means radical

37. ## math

solve the system. Give the x-value of the solution. 3x-5y=16 and -9x+15=48 answer key: 7 0 no solution infinite number solution
38. ## Math

Solve for X: 4x - 2 +7 = 17 collect like terms on left hand side 4x + 5 = 17 subtract 5 from each side 4x = 12 divide by 4 on each side x = 3
39. ## Math

which value is the "whole" in the following problem: 14 is what percent of 56? I said the "whole" is 56, due to the problem not stating whether i was to solve the problem by using proportions or whatever. May you check my answer? Thank You
40. ## Math 222

How do I use substitution to solve the system? Please help Addition and equal key is not working -5x plus 2y equal 16 y equal 2x plus 7
41. ## math elementary

add. write the doubles fact used to solve each one. 0+1=1 6+7 =13 4+3=7 please explain how to use doubles plus 1 and doubles minus 1
42. ## math

if 6% of a number is 14, what is 13% of the number Let X = the number 0.06X = 14 Solve for X. Then 0.13X = ?? Post your work if you want us to check the answers.
43. ## quick question regarding math

If I solve an equation and it comes out to all real numbers, is going to be always true, sometimes true, or never true? I do not know why I am having trouble with this but really need help.
44. ## math for 6 grade

write and solve an eqution for the following: there are 17 children in the class. 5 more join the class. how many students are in the class.
45. ## math

determine known length for a triangle one side is 2.5cm other side 1.6cm find how solve the third side
46. ## math

how do i solve for x when x = log(32.5)? here's my work: log x = y 10^y = x then, x = log (32.5) 10^x = 32.5 10^x = 17/2 this is where i get stuck... i don't know how to get rid of the bases... can some one please teach me how? thank you! :)
47. ## MATH

Solving by graphing DQ 1 Solving by substitution Solving by elimination Which method do you think would be best to solve this system? y=10x-8 y=1/2x+5
48. ## math

24= -2(b-3)+8 I suppose you want to solve 24= -2(b-3)+8 for b, am I right? If so, subtract 8 from both sides to get 16 = -2(b-3) divide both sides by -2 to get -8 = b-3 then add 3 to both sides to get -5 = b then check the answer 24 = -2(-5-3) + 8 = 16 + 8
49. ## math

Solve log. 2 log (x-1)= log (x+1) the answer is 3 but i don't know how to get it...Any one hint or suggestion will be greatly appreciated :)
50. ## Math

Could someone please help me. Solve the linear equation by substitution. Y=10-2.2x 5x+y=70 For the first equation I am getting x=21.4 and for the second equation I am getting y=-37. The answers are 21 3/7 and -37 1/7. Could you show me how you do this so I
51. ## math

I have been doing pascal triangle and do not know where this question comes from? solve for b (3+b)to the 4th power = 1 do I take 3 to the 4th + b to the 4th =1 and then subtract 81 so that -81 =b to the fourth which = 3
52. ## math ASAP

add. write the doubles fact used to solve each one. 0+1=1 6+7 =13 4+3=7 please explain how to use doubles plus 1 and doubles minus 1
53. ## Math

Solve for the 1st term of the arithmetic sequence whose 33rd term is -2p and whose 61st term is 26p.
54. ## Math

Translate and simplify "six less than twice the sum Of a number and three. I was not sure how to set it up Is it 2(x+3)-6 Or would it be set up 2x+3-6 I can solve it once I know how to set up the equation. Confused. Thanks for your help
55. ## math

which of the following represents a change from 32 to 40? a- an increase of 20% b- an increase of 25% c- an increase of 8% d- a decrease of 20% i don't want to know the answer to the question i would just like to know how to solve it. please help! thank
56. ## Math

Find the value of the following expression: (2^8 x 5^-5 x 19^0)^-2 x (5^-2/ 2^3)^4 x 2^28 I tried to do a couple steps to solve the question but I don't know if its right. Step 1:(2^8 x 5^-5 x 19^0)^-2 x (5^-2/ 2^3)^4 x 2^28 Step 2: (2^-16 x 5^-10) x
57. ## Math

Hi, I'm really having problems with this question, can someone please help me. Thank-you! Algebraically solve for 0<phaeta<2pi, 2cos^2 phaeta-7 cos phaeta +3=0
58. ## Math

7. Jim has 38 bottles of water in 9 of x bottles and one pack that contains only 2 bottles. What is the value of x? (Hint: Set up a two-step equation.) I don't know how to solve this. Help. 10. Addison read 25 pages of the book the first day. She continued
59. ## Math

40-3n=-23 what is n? 2/3-6h=-13/6 what is h? write as a equation,then solve. the quotient of a number and 2, minus 9, is 14 a number decreased by 7 and then divided by 5 is 13 the sum of 15 and 7 times a number is 99
60. ## Math

How do you solve this? I have tryed so many times and can not get the right answer. (1.65-1.05)^2/0.4+0.8 The answer is suppose to be 1.7 but everytime I do the problem i don't get anything near that answer. Help would be greatly appreciated.
61. ## Math

Solve the logarithmic equation. Express your solutions in exact form only. Please show all of your work. log3(x+2) + log3(x+8) – 2 = log3(x+3)
62. ## Math

How would I would I solve this problem -25-75h=h+25 Add 25 to both sides. Subtract h from both sides. This should leave you with -76h = 50 Finally, divide both sides by -76
63. ## Math

1. Solve each absolute value equation or inequality and choose the correct answer from the choices provided. |x| + 5 = 18 (1 point) 5 or –5 13 or –13 18 or –18 23 or –23 2. |x + 3| < 5 (1 point) –8 < x < 2 –2 < x < 8 3 < x
64. ## math

One leg of a right triangle is one less than twice the other. The area of the triangle is 18 square feet. What is the length of the 3rd side of the triangle? Solve by factoring. A= 1/2 (b)(h) 18= 1/2 (x)(2x-1)
65. ## Math short but tricky

Solve log. 2 log (x-1)= log (x+1) the answer is 3 but i don't know how to get it...Any one hint or suggestion will be greatly appreciated :)

Solve this number riddle: I am an odd number. I am less than 100. The sum of my digits is 12. I am a multiple of 15. What number am I? Is it 1?
67. ## Math

Use the substitution method to solve the following system of linear equations: x + y = 6 x = –y + 2 A. There are an infinite number of solutions. B. The solution is (2, 4). C. The solution is (4, 2). D. There is no solution.
68. ## Math

I want to check this. I had used formulas V = B x H and I x w x h to solve these What is the volume of the box that is 14 inches long, 7 inches wide and 10 inches high? I got 980. Am I right?
69. ## math

the length of a rectangle is 1 cm less than twice its width. the area is 28 cm squared. find the dimensions of the rectangle. Just translate the English into "math" "the length of a rectangle is 1 cm less than twice its width" l=2w-1 "the area is 28"

I'm trying to solve this problem Calculate (a) how long it took King Kong to fall straight down form the top of the Empire State Building (380 m high), and (b) his velocity just before "landing". My teacher said try and rearagne this equation for t X = Xo
71. ## Math

Could someone please help me solve this problem, the age numbers that I am working with are 10yrs old 55yrs old and 75yrs. old. I need to know at my age of 55, in years, how old was the older person of 75 when I was born? Could you please write an equation
72. ## maths

2(n-5) = 4 (n+2) Solve the equation is the answer -0.3 ? 2(n-5) = 4 (n+2) Solve the equation is the answer -0.3 ? If the intent of 4 (n + 2) is 4 times (n + 2), Expanding, 2n - 10 = 4n + 8 Therefore, 2n = -18 making n = -9. If the intent of 4 (n + 2) is 4
73. ## algebra2

Solve the matrix equation: 4 -5 m 32 1 2 * n = -5 if you meant this │4-5│ │m│ │1 2│ │n│ = │23│ │-5│ then this would result in the following two equations. 4m-5n=32 m+2n=-5 solve these
74. ## Algebra II

I need some help with some problems as well as need some checked. Could you please help me? Thanks! 1. How do you graph y=1/x 2. How do I the x and y intecepts using a graph? Solve and check the linear equation. 9. (-4x-2)+7=-3(x+3) I got 14 10.
75. ## 3-D Coordinates Polar coordinates Precalculus Trig

The U.S.S. Lollipop is on assignment in the Atlantic Ocean. It travels from a longitude of 70 degrees west to 20 degrees west, along the latitude of 40 degrees north. How far does it travel? (Assume that the radius of the Earth is 6,400 km.) Erm I don't

write the partial fraction decomposition of the following rational expression ( hint: binomial expansion with Pascal triangle can be used to expand binomials. technology may be used to solve large systems using matrices or determinants) 4
77. ## Math

Posted by Marissa on Thursday, February 19, 2015 at 6:32pm. 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
78. ## math

in a rectangular with a perimeter of 30 inches two parallel and equally spaced creases are made the cardboard is then folded to make a triangular prism with open ends that are equilateral triangles you will maximize the volume how do i solve this?
79. ## 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
80. ## Pre Cal long problem( Can I see the work on this)

A stuffed animal dealer tells you that a fish he bought for \$8 four years ago is now worth \$200 follow the steps below to find the effective yield for this investment. Begin with the equation 8(1+r) ^4=200.Solve for (1+r) ^4 Take the common logarithm of
81. ## math

Solve. 2d−e=7 d+e=5 Use the linear combination method. The solution is (3, −1) . The solution is (4, 1). There are infinitely many solutions. There is no solution.
82. ## Math

Ed is thinking of. number. If he adds four to his number, the result is less than 6. Write and solve an inequality about Ed's number
83. ## Math

Graph the solution of each compound inequality. f > -1 and f < 5 Does this mean I just graph those 2 or solve them and find the intersection then graph?
84. ## math

Solve- 4x^2-9x+3=0 What is the smaller answer? Answer -1000 if there is no real value of x that solves this equation Answer must be +,- 1.0%
85. ## Math (Trig)

There's a question on my homework that says: Tan(x)=10/17. I an not sure how to solve the Tan(x) part. Am I supposed to do Tan-1(x)? Could someone help please?? Thanks!

solve the equation. check the solution 1. a divided by 7= 20 2. d divided by 2=8 3. c divided by 3=15
87. ## Math - Logarithms

can someone pleaaase help me with these "solve for x": a) log_x 100 = 5 b) 3^x+5 = 81 c) log (4x + 2) - log 2 = log 6x thanks heaps!
88. ## Math

The sum of four consecutive even integers is the same as the least of the integers. Find the integers. I'm not sure how to solve it and put it in an equation!
89. ## math

help me solve these problems please 1 1/2 - 3 2/5 + 8/15 - 2 2/3 (-4 7/12) - (-3 2/3)- 1 /24 + 2 5/8 -3 1/2 - (- 1 5/6) + (-1 1/12)+ 2 3/4 8-5*2+6/(-2) this i think i can get the right answer 8-10+(-3) -2+(-3)=-5 is that the rite answer 2 7/9/ (-1 4/81)-
90. ## math

How do I solve a this problem under the given conditions? cos(2[theta]) csc[theta]=-4/3, tan[theta]>0
91. ## Infinite math

use the M method to solve the following linear programming problem: Minimize C+ -5x+10x+15x Subject to 2x+3x+x <(or equal to) 24 x-2x-2x >(or equal to) 1 x,,x,x>(and equal to) 0

Using a scale factor of 1 inch = 16 feet, what are the blueprint dimensions of a room that is 20 feet x 28 feet? A. 1.5 in x 2.5 in B. 1.25 in x 2.25 in C. 1.25 in x 1.75 in D. 1.5 in x 1.75 in Could anybody tell me how to solve this problem, please? I
93. ## Math

x=-y+3 5x-y=-2 Solve using Elimination I already solved the equation using Substitution, Graphing, and a table I just need a little more help on Elimination. I know that in Elimination they have to be in the same form so I put it in slope intercept which
94. ## MATH

Alexis separated her pictures into 3 piles. Each pile contained 9 pictures. How many pictures did she have in all? Write and solve equation. Answer to my problem: 27=9p p=3
95. ## Math

Need to know the formula for find the perimeter. Need to solve this problem. A square metal box has a perimeter of 8.32". If the sides are .04" thick what is the perimeter of the inside?
96. ## Math

Find the equation of the tangent to the graph at the indicated point. f(x) = x^2 − 1; a = 3 and f(x) = x^2 − 8x; a = −9 whats the difference between 1 and 8x. What formula do I use and how should i solve both of these problems? Thank you
97. ## Math

Consider the equation x^2 + 20 = 12x A) draw geometric diagram representing this equation. B) Show how to complete the square geometrically. C) Solve the equation.
98. ## Maths

Marks worth is A 1 B 2 C 2 Please explain next to it though how you got that answer and what to write to get that mark. Clearly explain as I have no clue, don't leave anything out though! Information needed to solve There is an isosceles triangle with
99. ## Maths

Marks worth is A 1 B 2 C 2 Please explain next to it though how you got that answer and what to write to get that mark. Clearly explain as I have no clue, don't leave anything out though! Information needed to solve There is an isosceles triangle with
100. ## 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