# math..solve for u again

155,622 results, page 61
1. ## Math

Solve sin theta=-1 for all real values of theta
2. ## math/ algebra

solve the equation log (4x)= log5 + log(x-4)
3. ## Math

Solve for the 101st term of the sequence whose 1st term is x-y and d=2x+y-3.
4. ## Math

Solve for triangle ABC which have angle A =25.25, angle B =60.51 and a =3.82.Find c
5. ## math

How would I solve this equation for x? 0=3.9657(0.9982^x)ln0.9982

7. ## Math

Solve (16x^2)^-3/4 Please help using step by step. I don't understand how to do this. Thank you
8. ## Logarithms (math)

how do you solve for x 3.4e^(2-2n)-9=-4 I don't know what is the step by step process. Help please!
9. ## math vectors

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

can someone help me solve for x for this equation (0.5)(((cos(180-x))^(2))(cos(90-x))^(2))=0.0500

Solve the following quadratic by either factoring or using the quadratic formula: 6x2 - 5x = 6 6x^2 -5x -6 = 0 (3x+2)*(2x-3) = 0 Take it from there
12. ## math

Solve by multiplication principle -2x is greater than 1/9 answer: x is greater than -1/18
13. ## Math

1) Given that p(-3), p(-1), and p(5)=0, which expression could be p(x)? A)x^3-x^2-17x-15 B)x^3+x^2-17x+15 C)x^3-3x^2-13x+15 D)x^3-9x^2+23x-15 How do I solve it? Please help
14. ## Math

Use Cramer's Rule to solve: 3x-5y=21 and 4x+2y=2. a=3, b=-5, c=4, d=2, e=21, f=2 21(2)-(-5)(2) divided by 3(2)-(-5)(4) =52/26= x=2 3(2)-21(4) divided by 3(2)-(-5)(4) =78/26= y=3 answer: (2,3)
15. ## Math

1.Sally age is 12 years plus half her age. How old is she? 2.Given that: 4x-y+9=0 and 3y-2x=7, solve for x.
16. ## math

Use quadratic formula to solve each equation 3k^2+6=6 I get 3/2 but I can't seem to get the other half of the equation such as x=3.7 or .26 etc...
17. ## Math

A triangle has verticies of (1,3) (4,5) and (6,2). Is this a right angle triangle? Solve using algebra.
18. ## Math

I just need help to solve these steps. 8 to the 2 power +9(12/ 3*2)-7 I know the answer is 129 but I'm not sure of the steps to get to it.
19. ## math

a right 90 degrees triangle/ label L,J and K. JK is 7 and angle L is 31.6.solve the given right triangle
20. ## Math

Explain how to solve the following system of equations. What is the solution to the new system? 2x + 2y + z = -5 3x + 4y + 2z = 0 x + 3y + 2c = 1
21. ## math/algebrall

solve the system of equations:4x - 3y equals 14 and y equals -3x plus 4 i think its either 1(4,10) (2,2)
22. ## math

input output 10 12 15 22 21 _______ 6 4 29 50 _______ 2 how do i solve this problem?

.50 - x / x = 3.20e-1 I need to solve for x. I was going to do .50 X 3.20e-1 and then take the square root but this is not correct. I am not sure what to do. Thank you for your help.
24. ## math;SOS

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

solve equation if equation has no solution state so,simply when necessary 2/3x+1x=1/6 1/x+4-1/x-2=x+2/x^2+2x-8 help me please
26. ## math

PLEASE!!!!i need help on these 4: *4y=15-3x 2y=3x+21 *4x=5y-14 y=-6x-9 *5x=4y-30 2x=3y=-12 *2/3y=10+4x 5x=1/3y-8 use linear combinations to solve the system of linear equations thank you!!!
27. ## math

I don't understand how I am supposed to solve if i have something like (-7) to the power of -2... or 3/4 to the power of -1
28. ## math

PLEASE!!!!i need help on these 4: *4y=15-3x 2y=3x+21 *4x=5y-14 y=-6x-9 *5x=4y-30 2x=3y=-12 *2/3y=10+4x 5x=1/3y-8 use linear combinations to solve the system of linear equations thank you!!!
29. ## Math: Inequalities

How would I solve this inequality and graph? (x+2)((x^(2)-x+1)) > 0 I got x > -2 and x^(2)-x+1 > 0 How would I graph x^(2)-x+1 > 0 because I can't factor it.
30. ## math

How do i solve a set of equations that are set equal to eachother?
31. ## math

Find the restrictions: how to solve problem 1. y = 3- sqrt(2x-8) x => 0 2. y = 9-sqrt(x -2) x =>0
32. ## Math help

Please solve it step by step. Integrate: ∫(x^3/(√(x^2+1))dx
33. ## math

how do you solve these problems? 1.2x/3 + 1/3 - x/8= 2/3 2. 3n + 9/10 + n/5= -2 3/10 3. 3k/4 - 28 - 2k/3 = 37 thank you can you please show me step by step how you got the answer?
34. ## math

can you show me how to solve linear systems step by step????? 2x+y=5 x-y=1
35. ## Math solving for x

In the expression 4x squared + 7 what is the degree of 4x squared? How do I solve for X?
36. ## math

solve tan2(x+41 degrees) in real number fo degrees
37. ## Math

Explain how to solve the following system of equations. What is the solution to the system? 2x+2y+z=-5 3x+4y+2z=0 x+3y+2z=1
38. ## Math (algerba 1)

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

how do I go about trying to solve this problem (6 square rootof 5 +2 square root of 7)
40. ## math

How do you solve this? 5x- [1.5 -3.6] [0.2 1.3] [-0.3 2.8]= [-5.6 1.7] 5x/5[-1.5 -3.6] [0.2 1.3] [0.3 -2.8]=[-5.6 1.7] x = [-1.5 3.6] [0.2 1.3] [0.3 -2.8]=[-5.6 1.7] [-1.5 + 0.2 + 3.6 + 1.3] [0.3 + -5.6 + -2.8 + 1.7] x = [-1.3 4.9] [-5.3 -1.1] I have tried
41. ## math

explain how to solve 82 +9(12 divided 3.2) -7 I thing 8x2=16 + 9=25 12 divided 3 x 2 -7 =1 25 + 1 =26
42. ## math

solve 4^(3-x)=7 to 3 s.f. showing all workings. I have got as far as -x =log(7)-3log4/log(4)
43. ## Math

Write a word problem using 7 groups. Solve the problem
44. ## Urgent Math Help

Solve for x: 1.) ln√x-8=5 2.) log2x+log2(x+2)=log2(x+6)
45. ## Math

How can you solve this inequality using an algebraic method. -x^3+2x^2+4x-8 > or equal to 0 (x-2)(-x+2)(x+2) > or equal to 0
46. ## Math

Solve the system using elimination. 10y − 2x = 50 6x − 3y = 12 A. (5, 6) B. (2.1, 0.2) C. (2.1, 4.6) D. (6, 5)
47. ## math

Solve for x: 𝑦 = 2sin−1(𝑥 −5)
48. ## math

Solve the equation: sin (3x+30°) =√3/2 for 0°≤x≤90°
49. ## 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)

51. ## math

Solve the initial value problem d^2x/dt^2+2dx/dt-3x = 0, x(2π) =1, x(2π) = 13
52. ## math,correction&help

Is this right:if it still needs more can someone help me out what else can i say....thanks why are polynomials important? polynomials are important because the are used to determine and solve the unknowns in equations. Many natural processes can be modeled
53. ## Math (matrices)

No one answered my matrix question. Let me rephrase: Let A, B, and 0 be 2x2 matrices. Assuming that A is invertible and 0 is all zeroes, what is the inverse of the matrix [A|0] [B|A] (that is a 4x4 matrix represented as 4 2x2 matrices) The answer is in the
54. ## science, chemistry, biotechnology

"You're creating a standard curve for pyruvate. You need to create a standard with 20 micromoles in a cuvette. How much 100 mM pyruvate would you need?" My understanding is to solve for VOLUME using the equation: micromoles = (mM)(volume in ml) 20
55. ## I need help again

A car enters a turnpike 22 miles north of a town. The car travels north at an average speed of 64 miles per hour. How far is the car from the town after 4 hours? How do you solve the linear function then solve the problem? If you could help me understand
56. ## algebra

Solve system of equations to model the problem then solve: The length of a rectangle is 7 inches more than the width. The perimeter is 34 inches. Find the length and the width of the rectangle.
57. ## algebra

Solve system of equations to model the problem then solve: The length of a rectangle is 7 inches more than the width. The perimeter is 34 inches. Find the length and the width of the rectangle.
58. ## ALgerba 2

I would really appreciate help on these equations. 3. Devon tosses a horseshoe at a stake 30 feet away. The horseshoe lands no more than 3 feet from the stake. (a) Write an absolute value inequality that represents the range of distances that the horseshoe
59. ## Calculus - Taylor

could you please help me with solving this problem? #1) Find the Taylor polynomial Tn(x) for the function 'f' at the number 'a'. f(x) = sqrt(3+x^2) ; a=1; n=2; my work so far: f (x) = sqrt(3+x^2) = (3+x^2)^(1/2) f ' (x) = (1/2)(3+x^2)^(-1/2) f '' (x) =
60. ## Physics

Can someone help me solve this problem? This example problem will help me solve the actual homework problems If an 0.6kg apple is dropped from 0.5m height onto a seesaw and flips up a 0.25kg kiwi. To what height does that kiwi reach. Assume all the energy
61. ## ALGEBRA 2

would really appreciate help on these equations. 3. Devon tosses a horseshoe at a stake 30 feet away. The horseshoe lands no more than 3 feet from the stake. (a) Write an absolute value inequality that represents the range of distances that the horseshoe
62. ## Computer Organization

Help me solve this question by using 1's complement (i) 110(Base2) - 010(Base2) (ii) 1010(Base2) - 1000(Base2) Help me solve this question convert The Value -40 and 52 to 8-Bit digit in form of: (i) Sign and Magnitude (ii) 1's Complement (iii) 2's
63. ## Physics

A particle leaves its orgin with a velocity of 4 i m/s and a constant acceleration of (-2i + .5j) m/s^2. At the time the particle reaches its maximum X corrdinate a) what is its velocity? b) what is its position vector? I'm not sure which equations i
64. ## Trigonometry

Solve for x to the nearest hundreth and can you explain how you get your answer I don't understand 3^x = 1.295 Your question has nothing to do with trigonometry. You can solve for x by taking the logarithm (to any base) of both sides of the equation. Then
65. ## Math

In a collection of nickels, dimes, and quarters worth &6.90, the ratio of the number of nickels to dimes is 3:8. The ratio of the number of dimes to quarters is 4:5. Find the number of each type of coin. Use a coin value chart to help. well, 4:5 is the
66. ## Algebra

Translate each situation to a system of equations. Do not attempt to solve. Paint Town sold 45 paintbrushes, one kind at \$8.50 each and another at \$9.50 each. In all, \$398.75 was taken in for the brushes. How many of each kind were sold? My teacher told me
67. ## Al

Factoring to solve quadratic equations: Find the value of x as it relates to the triangle. Area = 600 cm^2 There is a large triangle that is divided by a 90 degree angle in the middle. That 90 degree angle line is "x" and the complete bottom of the large

A mass of 11 kg is placed on a frictionless incline which is inclined at an angle of 69 degrees above the horizontal. It is held in place by a rope which is attached to a wall at the top of the incline. The rope is angled 13 degrees above the direction
69. ## Math

. Mark pays \$4.68 for 0.72 of a pound of almonds. Based on this cost ratio, which statement is true? A. Mark pays a rate of \$3.37 per pound of almonds. B. Mark pays a rate of \$3.96 per pound of almonds. C. Mark pays a rate of \$5.40 per pound of almonds. D.
70. ## Math

Hi, would someone mind just checking the answer I got for this formula and tell me if I'm on the right track or not. Question... x+y=21 3x=4y Answer I got... x=84 y= -63 I didn't get that. Check your math. I found 7y=63 but not y = 63. You can always check
71. ## Chemisty

How do I solve what is the mass of a 32.5 mL sample of ethanol if the density of ethanol is .789 g/mL. I know Mass = Density * Volume. So 32.5 mL * .789g/mL = the mass, but I don't know how to solve that.
72. ## algebra3

can u solve the equation 1)1.2x= 2.3x-2.2 2)[x-4]= 15 3)[13+2x]= 5 1) 1.2x = 2.3x - 2.2 2.2 = 2.3x - 1.2x 2.2 = 1.1x x = 2 2) x - 4 = 15 x = 15 + 4 x = 19 3) 13 + 2x = 5 2x = 5 - 13 2x = -8 x = -8/2 x = -4 it's all about getting the same variables to the
73. ## math

A trapezoid with an area of 48m2 has a height of 6m. One of its bases is 12m. Write and solve an equation to find the length of its other base. Also explain the work so I can understand when I do the test. Thanks
74. ## math

I need help for these two problems and if I can get the steps thank you. 1.solve for x: 0.34=1/(1+x)carrot3 2.If you buy a share of stock for \$15 and sell it 2 years later for \$18.50, what is the annual percentage return (on a compound basis) that you
75. ## math

I believe Lance meant to write x = -5/18 I am wondering why you have two minus signs before the number 13. Two minuses make a plus, but usually they are not written that way. combine like terms -18x=5 solve for x x=5/18 what does x equal in...
76. ## math

a block of wood in the shape of a cubiod has lenght 2.5meter and breadth 1.5 meter and heightt 2 miter how many cubical blocks each of edge 50 cm can be cut from it plz solve
77. ## Math

At 1 pm two trains, traveling toward each other leave from towns that are 312 km apart. One train averages at most 82km/h and the other at most 74km/h. What is the earliest possible time for them to meet? Please help me solve this. I'm not exactly sure how
78. ## math

can someone check my answer please? solve using multiplication principle. -4x>1/11 The way I solved it was dividing both sides by -1/4 to isolate x then I simplified left side which is -1/44 simplifying it to -1/11 is this correct or did I miss a step

Mrs. Miller sells a house for \$179,000. If she earns a commission of 6%, how much money does she earn? Write a porportion and show your work. Can someone help Me understand how I would solve this? Thanks!
80. ## math

my teacher gave me exam review booklets and there is something i don't understand.. the question is : Find the slope of a line that passes through the points (-9,-3) and (-7,-1). if someone can please explain to me how to solve this it would help majorly !
81. ## Math

A cup of coffee costs 80c less than a burger.Together they cost 220c. Use this information to form an equation and solve it. This question I can't get my head around. It's due in 2 days but I would like to get it done sooner. Thanks.
82. ## Algebra 1

Solve by completing the square: A rectangular patio has a length of (x + 6) m, a width of (x + 8) m, and a total area of 400 m2. Find the dimensions to the nearest tenth. Please help me with this math problem. Thanks so much.
83. ## math

please guys help me this question, how to solve it. Calculate the total surface area of a hollow cylinder whose radius is 15 cm and height is 20 cm. (a)3297 cm^2 (b)1884 cm^2 (c) 3768 cm^2 State why you choose a,b or c?

The poster shows how many of its games the football team has won so far. Express this information as a fraction, a percent, and as a decimal. Can someone show me how to solve this problem?
85. ## 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.)
86. ## Math

Find the coordinates of the point at 180 degrees on a circle of radius 3.4 centered at the origin. Round your answers to three decimal places, if required. ( , 0 ) I got 0 as the y coordinate. Please help me solve for x
87. ## Math

Hi. This is my question: An art student wants to make a string collage by connecting six equally spaced points on the circumference of a circle to its center with string. What would be the radian measure of the angle between two adjacent pieces of string,
88. ## Algebra

Person A can paint the neighbor's house 2 times as fast as Person B. The year A and B worked together, it took them 5 days. How long would it take each to paint the house? So, i know how to setup the problem, but i'm not sure what steps I need to take to
89. ## MATH LOGIC AGAIN

Hi can some one go back to my Math logic problem and possibly give me one more example? thanx :) I found a paper you may want your library to get for you: http://cat.inist.fr/?aModele=afficheN&cpsidt=13604737 It is probably in the local college library. I
90. ## Solving inequalities

I have to solve the following inequalities: x^2 + y^2 is less than or equal to 49 y is less than or equal to 3-x^2 I know that these are the equations of a circle and a parable. There should be 3 solutions. However, I am not sure how to solve these
91. ## PreCalculus

Hi i don't know how to do this problem solve for n^3 given that log(40 SQRT(3))/log(4n) = log(45)/log(3n) Thanks i'm copletely lost and don't know how to solve
92. ## Chemistry

When 23.3 mL of 0.14 M HCl are added to 50.0 mL of a 0.16 M solution of a weak monoprotic base, the pH of the solution is 10.50. What is the Kb of the weak base? do u find moles of both and then add the moles for HB+ and then just use the B- moles for the

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
94. ## physics hey bob

you help me solve this problem. but how am i suppose to if i don't know the mass of the car? on a level road the stopping distance for an automobile is 35.0m for an initail speed of 90 km/hr what is the stopping distance of the same automobile on a simalr
95. ## math

A book publisher is shipping a new book in boxes of 200. If 30 boxes fit in 1 shipping crate, how many books are in 20 shipping crates? Explain the mental math you used to solve the problem.
96. ## Math - Functions

For the real valued functions f(x) - |x| - 4 and g(x) = sqrt(5 - x) Find the composition of f o g and the domain in interval notation. Can someone help me solve this?
97. ## Math

David wanted to solve 3(x-7)=5. As a first step, he wrote 3x-21=15. What error did he make? Correct his error and then find the solution?
98. ## math

Solve the equation. (Enter solutions from smallest to largest. If there is no solution, enter NONE in the answer boxes.) 5x2 = 9x + 2
99. ## math

I'm trying to solve by completing the square but i always get stuck at the end.. 3x^2-6x+2=0 3(x^2-2x)+2=0 3(x^2-2x+1-1)+2=0 3(x-1)^2 -1 =0 3(x-1)^2=1 now what do i do?... the answer is supposed to be x=3+-(square root)of3-> the whole thing over 3
100. ## Math

Can you help with this equation? Have to solve for the indicated variable: For x: With equation y = x + 1/x - 1; in case it doesn't make sense; the x + 1 is in the numerator and the x - 1 is in the denominator. Thank you for your help. Cassandra