# math..solve for u again

156,312 results, page 74
1. ## Science/Math/HElP

Science- A 25N object is 3 meters up. How much potential energy does it have? our teacher said that the formula for finding out potential energy is PE = Mass * Gravity * Height. The gravity on Earth is always 9.8, but my problem is that instead of mass the
2. ## Algebra

Solve and express in interval notation Solve: |5 – 8x| > 11 and write interval notation for the solution set. This is what I get but I need it in interval notation. x<-3/4 or x >2 Solve: (x-3)/(x^2-25)<0 and write interval notation for the
3. ## Matrices Word Problem

The stopping distance of a car traveling 25mph is 61.7 feet, and for a car traveling 35 mph it is 106 feet. The stopping distance in feet can be described by the equation y = ax² +bx, where x is the speed in mph. (a) Find the values of a and b. (b)Use
4. ## easy math

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

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

Please help me solve these two problems and check my answer :) 1. 3x-5+x+2 My answer- X= 17/3 2. 5/6x+1/4= -9/4 my answer- X= -2
8. ## math

Solve the inequality W > Y plus H all divided by P for H. W divided by P – Y > H W times P divided by Y > H WP – Y > H W + P – Y > H
9. ## Math

6cos^2 theta + 5cos theta=1 Solve for theta
10. ## college math

solve absolute value 2x-20 absolute value=absolute value 9x+ ansolute value 15 |2x-20|=|9x+15|
11. ## MATH

Can someone help me solve these problems? Thank you. [SQRT(2x2 + 5x + 6)]=x . [SQRT(x + 3)] = 2[SQRT(x)]
12. ## math

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

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

My problem is to graph a system of inequalities (which ive done) and introduce slack variables to convert the system of inequalities to a system of equations. So I am building my table and all is easy until I get to the point where S1 and S2 are both zeros
15. ## Physics

A airplane has a speed of 290 km/h and is driving at an angle of 30 degrees below the horizontal when the pilot releasese a radar decoy. The horizontal distance between the release point and where the decoy hits the ground is 700m. a) How long is the decoy
16. ## Physics newton

A rocket weighs 1 x10^7 N while on the surface of the earth. The ignition of its engines results in a lift off force of 1.5 X 10^7 N a) what is the mass of the rocket. b) what is its acceleration at lift -off c)How fast will it be moving if it acceleartion
17. ## Algebra HELP

Can someone check my answers? Solve for m: m + 6 = 3(2m - 4) a.4 b.-6/5 c.18/5 d.2 answer: c. 18/5 Solve the equation and check your solution: 3(x + 6) = 18 + 3x a. -6 b. 0 c. all real numbers d. no solution answer: b. 0 Solve the equation and check your
18. ## Algebra--help really needed!

I'm having some trouble with my algebra homework. Please walk me through the question completely and give me the answer so I can fully understand it if I would ever need to solve a similar problem. Here's the problem: #1: Jon begins jogging at a steady 3
19. ## MATH!!!!

The CN Tower is 553m high. A person in a boat on Lake Ontario, at a point B due south of the tower, observes the top (T) of the tower at an angle of elevation of 8 degrees. At the same time, another person, at a point C on a bearing {S 85 degrees E } from
20. ## 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
21. ## Math

Solve for the length of the unknown side in the following right triangle. (Side AC is the hypotenuse.) Round your answer to two places, where applicable. Side AB ? Side BC=12 Side AC=19
22. ## Vertex edge graphs

OK so my friend asked me how to solve this question i didn't know how but tried anyway and got the right answer but i want to know if i did it correctly 6 boys are working on 5 go carts. each boy works on more than one cart. it takes one weekend to make
23. ## Physics

*I really don't know how to get started. I have done lots of the homework, but this one (and a couple of others) are really giving me PROBLEMS.* A pickup truck is carrying a toolbox, but the rear gate of the truck is missing, so the box will slide out if
24. ## Math

Hi. I found this question on a Math Counts practice test and it seriously confused me. I've never learned about this, and it would help if someone helped me. Thanks in advance. How many elements are in the intersection of the set of all the prime numbers
25. ## Math

Can you help me solve this problem? Cuz i cant seem to figure it out. An orbiting satellite traveled 3,225 miles in 40 minutes. Find its speed in miles per hour. (Round your answer to the next whole number.) (a)103 (b)4,838 (c)4,267 (d)6,200 (e)150
26. ## Math

9.The formula F=9/5 C+32 can be used to convert a temperature from degrees Celsius to degree Fahrenheit. Which of the following best represents 9/5? A.9.5 B.1.8 C.1 4/9 D.9 4/5 B 10.Mr.Cartwright bought 2 7/8 pounds of grapes for his lunches. If he paid
27. ## Math

The distance d1 in miles, a small plane is from its final destination is given by d(t) = 250 – 100t, where t is the time, in hours, remaining for the flight. Find and discuss the meaning of the intercepts of the graph of the function. (You must first
28. ## Calc-math

I can do the Ferris Wheel type. This one I can not solve. A light is attached to a 13 inch radius bicycle tire, at a point 8 inches from the center. If Harvey rides the bike at 15 mph, how fast is the light moving up and down at its fastest?
29. ## Discrete Math

Solve the recurrence relation a_n = -6a_n - 1 + 7a_n-2, n ≥ 2, given a₀ = 32, a₁ = -17. This is what I have figured out so far: polynomial: x² + 6x - 7 distinct roots: 1 and -7 I do not understand how to find C₁ and C₂. How
30. ## math

A firm pays \$1.75 for each copy of a magazine and sells each one for \$2.50. There is a fixed monthly cost of \$40 for printing the publication. If the firm wants to make \$550 dollars next month, how many magazines do they have to sell? Write and solve an
31. ## math

A water skiing instructor recommends that a boat pulling a beginning skier have a speed less than 18 miles per hour. Write and solve an inequality that you can use to find the possible distances d (in miles) that a beginner can travel in 45 minutes of
32. ## math

How do you solve system of equations and tell if they're consistant and independant,consistant and dependent,and inconsistant? If you find no solutions then the system is inconsistent. Suppose you have N variables and M equations (N larger than or equal to
33. ## solve the equation

Solve the equation log[14](x+49) - log[196] x=1
34. ## Geometry

Solve for X, given BD=3x+5 and AE=4x+20 B is the midpoint of segment AC and D is the midpoint of segment CE. Solve for x, given BD=3x+5 and AE=4x+20
35. ## math

Formula for distance to the horizon for a satellite in orbit. d = sqrt(2rh+h^2) d = distance to the horizon h = height above sea level for the observer. r = radius of the earth ---------------------------------- Solve for h. ie. so I can plug in d and r
36. ## math

Solve 3x^2-8x+4=0 by graphing. If exact roots cannot be found, state the consecutive integers between which the roots are located. A)2;between 0 and 1 B)between 0 and 1;between 7 and 8 C)1,2 D)between 0 and 1;between 3 and 4 I don't understand this one
37. ## Math

When measuring the volume of a tennis ball, your water level rose from 50ml to 68ml. What is the volume of the ball? I don't know if I divide or add to solve. Here is the choices. 118,108,18,8.
38. ## Math

barbara can walk 3200 meters in 24 minutes.Mavis can walk 11,808 feet in 24 minutes.Who walks at a faster rate of speed?Explain the steps you take to solve the problem.
39. ## Math

Tiny scored 94, 68 and 88 on her first 3 Algebra 1 tests. Her next test is her final which counts as double. Write and solve an equation that Tina could use to determine the minimum grade she must score on her final to have a mean score of 80.
40. ## Math

Casper bought some pencils at \$.50 each. He had \$3 left after the purchase. If he wanted to buy the same number of note pads at \$.80 each, he would be short \$1.50. Write a linear equation for the number of pencils he purchased. Then solve it.
41. ## Math

Solve the inequality. Expression solution set using interval notation and graph the solution set using a number line. -15x+3<_-3(4x-7) Thats supposed to be a greater than or equal to sign lol
42. ## math

In solving the equation (x + 4)(x – 7) = -18, Eric stated that the solution would be x + 4 = -18 => x = -22 or (x – 7) = -18 => x = -11 However, at least one of these solutions fails to work when substituted back into the original equation. Why
43. ## Math

Solve the inequality. Expression solution set using interval notation and graph the solution set using a number line. -15x+3<_-3(4x-7) Thats supposed to be a greater than or equal to sign lol
44. ## math

Can someone check over these problems for me? 1. The width of a rectangle is fixed at 28 cm. What lengths will make the perimeter greater than 70 cm? A: the length must be greater than 7 cm. 2. 7x=-63 A: x=-9 3. Is (-8.-9)a solution of 2x+4y=12 A: No 4.
45. ## solve math problem

A group of 9 workers decides to send a delegation of 3 to their supervisor to dicusss their grievences. c.) If there are 4 women and 5 men in the group, how many delegations would include at least 1 women? I know I have to use combination C(9,1)x C(9,4)
46. ## Math

Solve the inequality. Expression solution set using interval notation and graph the solution set using a number line. -15x+3<_-3(4x-7) Thats supposed to be a greater than or equal to sign lol
47. ## Math

barbara can walk 3200 meters in 24 minutes.Mavis can walk 11,808 feet in 24 minutes.Who walks at a faster rate of speed?Explain the steps you take to solve the problem.
48. ## Math

Solve the inequality. Expression solution set using interval notation and graph the solution set using a number line. -15x+3<_-3(4x-7) Thats supposed to be a greater than or equal to sign lol
49. ## Math

Solve the inequality. Expression solution set using interval notation and graph the solution set using a number line. -15x+3<_-3(4x-7) Thats supposed to be a greater than or equal to sign lol
50. ## basic math

Identify the rate, base, and amount in the following applications. Do not solve the applications at this point. 22% of Shirley’s monthly salary is deducted for withholding. If those deductions total \$209, what is her salary?
51. ## Math

a manufacturing process calls for the width of a part to be 10 cm. any part manufactured with an error of greater than 0.13 cm is rejected. parts with what widths are rejected? write and solve an absolute value inequality for this situation
52. ## Math

Sarah can afford \$255 per month for 6 years on a car payment, what is the price of a car that she can afford at this time? Assume an annual interest rate of 8%. I do not remember how to solve for problems like this one.
53. ## math

I need help solve the equation by fractions 8/(21-y) = 12/(y+19) I think the answer is y = 5, i just need to know how to do work out. i done some solution like this first multiply by(21-y)(y+19)(assuming that y = 21 and y = 19: (21-y)(y+19)8/(21-y) =
54. ## math

can someone check my answers approximately 4 out of 10 students at sonia's college lives on campaus. the college has 3,000 students . how many live on campus? 1,200 multiply (4)(-3/2)= -6 solve for the unknown 2/3=1.8 10 r answer 12
55. ## math

Tickets to a museum cost \$3 and \$8 for adults. a group of four visitors to the museum spent a total of \$22 on tickets. Write and solve a system of equations to represent this situation. Interpret the solution
56. ## 7th grade math Ms.Sue help please

4. What is the distance between Nicholas’s school(3,2)and the post office (-2,-2)? 6.4 5.2 3.6 3.0 5. If Nicholas is located at (– 3 , 2), what is the distance to get to the grocery store (1,-1)? 2 3 4 5 I have no idea how to solve these i have tried
57. ## math

How do you solve these types of problems.? Martina leaves home at 9.A.M., bicycling at a rate of 24mi/h. Two hours later, John leaves, driving at the rate of 48mi/h. At what time will John catch up with Martina? The basic formula is distance= speed*time
58. ## physics

A 2.20-kg ball, moving to the right at a velocity of +1.27 m/s on a frictionless table, collides head-on with a stationary 7.20-kg ball. Find the final velocities of (a) the 2.20-kg ball and of (b) the 7.20-kg ball if the collision is elastic. (c) Find the
59. ## Math

Solve the linear programming problem by the method of corners. Minimize C = 3x + 7y subject to 4x + y ≥ 39 2x + y ≥ 29 x + 3y ≥ 42 x ≥ 0, y ≥
60. ## SIXTH GRADE MATH

The ratio of wins to losses for a basketball team is 2:3. Which of the following is a possible total number of games? A. 7 games B. 14 games C. 25 games D. 26 games Can someone show me how to solve this problem please?
61. ## SIXTH GRADE MATH

The ratio of wins to losses for a basketball team is 2:3. Which of the following is a possible total number of games? A. 7 games B. 14 games C. 25 games D. 26 games Can someone show me how to solve this problem please?
62. ## math

Find the reciprocal of a. - 1/10 (-4-7) b. ½ / ¼ (hint: solve these first then find reciprocal of the answer) Responses
63. ## Math

How do you figure this problem out I am trying to help my son with his homework but can't figure out how to solve problem. 18+9x(5+4)divide 3-5
64. ## Math

I have the answer to this question but I have no idea how to get there. Solve for all values of x if 0¡x¡2¥ð. cos©÷(4x)+cos(4x)=0 The answer I have is: x=¥ð/8, 3¥ð/8, 5¥ð/8, 7¥ð/8, 9¥ð/8, 11¥ð/8, 13¥ð/8, ¥ð/4,3¥ð/4, 5¥ð/4, 7¥ð/4
65. ## Math

Could someone please help me with this problem? I need to solve -5/2x greater than or equal to -7/4. Here is the answer that I got but I 'm sure that it is not correct. x greater than or equal to 35/8. Thanks.
66. ## math

solve the system in interval [o,2π): y=sin^2(x)+cos^2(x) or x+π=cos^-1(y)
67. ## Math--Proportions

Solve for x: 2 to x+1=x+2 to 3 or 2 to x+3= x+2 to x+5 (the proportions end up being the same in the end) I keep getting to the part after you FOIL, and then I get stuck
68. ## math

Solve using suitable property [name the property] 1]428 x[-23]+[-428]x(-223) 2] 105 x(-37)
69. ## math

(For this, i know the equation for constant of variation is y=kx, but i just forgot how to solve it)For the eqaution -4y=8x, what is the constant of variation? A. -4 B. -2 C. 1 D. 2
70. ## math

Solve using suitable property [name the property] 1]428 x[-23]+[-428]x(-223) 2] 105 x(-37)
71. ## Math

solve sin(2θ)+1=0 on the interval 0≤θ≤2pi
72. ## math

help!!need an answer 3x+4y=12 (0, ),(2/3, ),(0, ),(-2/3, ) anybody? It looks like maybe you are supposed to take the equation 3x + 4y = 12, and solve for the values of y that correspond to given values of x. For example, when x=0, 4y = 12 and y = 3.
73. ## Math

1. For the following system of equations, what is the x-value of the solution? -x+2y=6 6y=x+18 a. -18 b. 0*** c. -6 d. 3 2. Solve the following system of equations using substitution. What is the value of y? 2x+3y=105 x+2y=65 a. 15 b. 25 c. 40*** d. 65
74. ## Math

Solve and prove the identity (tan x+ cot (-x))/ (tan x - cot(-x))= 1-2cos^2(x)
75. ## math

solve the equation log2(x+4)-log4x=2 the 2 and 4 are lower than the g This is what I got: log2(x+4)+log2(4^x)=2 log2((x+4)*4^x)=2 4^x(x+4)=4 x=0 is a solution???
76. ## math

Solve for t: Radical(t-108) - Radical(t+186) = 6 The only possible root is t = ?. It is an extraneous root.
77. ## MATH HELP

Solve the following system of equations: x − 2y = 6 2x − 4y = 10 Infinitely many solutions No solutions (0, 0) (6, 10) is it A
78. ## math

how would you solve this equation? 294 sin^2 theta = 196 sin 2 theta
79. ## math

Solve the inequality 1. m - 7 < 6 2. x + 4.5 more than or equal to 5.5 3.p + 12 > 9 4. Translate the following statement into an inequality: Five less than a number is at least nine. x - 5 more than or equal to 9
80. ## Math

How to solve: There are 40 chickens and cows in the farmyard. There are 100 legs in all. How many are cows and how many are chickens
81. ## help with math!!!!

Solve each system using substitution. Tell whether the system has one solution, infinitely many solutions, or no solution. 13. -x + y = -13 3x - 1 = 19 15. 1/3y= 7/3 x + 5/3 x - 3y = 5 17. 3x + y = -13 -2x + 5y = -54
82. ## math

Solve for: 1+cosx/sinx + sinx/1+cosx = 1 My teacher said no solution, but I don't know how he got that.
83. ## Math

If you can buy three raffle tickets for \$5, how many tickets can you buy for \$55? I need to know to different ways to solve this problem...
84. ## Math (Help) thx!

Solve the system using elimination. 2x − 5y = −5 x + y = 8 A. (−2, 10) B. (5, 3) C. (11, −3) D. no solution
85. ## 8th grade math

He had dimes and quarters ... He has 8 more quarters than dimes equalling 5.50..., how do u solve ..
86. ## math plz help ;-;

Solve the following equation: -2(x-3)+4=8x-20 please help me how to do this step by step plz i do understand how to do this, sorry ;-; And thank you for the ones the helped me with the other Q :D
87. ## Math

Solve. There are 18 boys in a class. There are w fewer boys than girls. How many students are there in the class?
88. ## Math "Need Help Asap"!

7.)Which proportion can be used to solve the following percent problem? What is 50% of 70% A.)X/70 = 50/100 B.)X/50 = 70/100*** C.)50/70 = X/100 D.)70/X = 50/100 B?
89. ## math

Solve the inequality 1. m - 7 < 6 2. x + 4.5 more than or equal to 5.5 3.p + 12 > 9 4. Translate the following statement into an inequality: Five less than a number is at least nine. x - 5 more than or equal to 9
90. ## Math-

Use a proportion to solve the problem. If 4 sandwich rolls cost \$1.08, how much will 18 rolls cost? A) \$4.32 B) \$6.32 C) \$5.86 D) \$4.86
91. ## math graphing the y-intercept

2 y=- +1 3 dont know how 2 solve it 2 get the y-intercept dont know how 2 graph it please help and explain it please help
92. ## Math

9. Out of 45 students, 29 go on a field trip. Which best represents the percent of the students who do not go on the trip? A.16% B.36% C.64%--- D.84% How do I solve this?
93. ## math graphing the y-intercept

y=2/3=1 dont know how 2 solve it 2 get the y-intercept dont know how 2 graph it please help and explain it please
94. ## Math

Write a word problem using 9 and 10 as factors. Write an equation to solve the problem
95. ## math

If the sale amount was \$475 and the commission rate was 6% what is the amount of Commission? I just need to know how to solve it.
96. ## Math

Solve (sinx-1)(cosx -1/2) = 0 where 0≤x<2pi a) pi/3, pi/2, 5pi/3 b) pi/6, 5pi/6, pi c) pi/3, pi, 5pi/3 d) pi/6, pi/2, 5pi/6
97. ## Math(Please check)

2.5 X 10^(-3) = (.28)(.38) / x^2 Solve for x. 2.5 X 10^(-3) = 0.1064 / x^2 2.5 X 10^(-3) X 0.1064 = 266 sqrt 266 = 16.3 Did I do this correctly?? Thank you for your help.
98. ## math

a quadrilateral with angles that mesure: 10x-25, 10x, 3x to the second power, and 2x to the second power. solve for x.
99. ## math

a quadrilateral with angles that mesure: 10x-25, 10x, 3x to the second power, and 2x to the second power. solve for x.
100. ## math

solve 2sin^2 theta-7 sin theta= -3 for theta, where 0<theta<360 degrees