# math..solve for u again

156,352 results, page 78
1. ## chemistry

hello, I can't seem to solve this question. i tried to look up someone else who may have asked this question. I found this girl named Sara,but her answer didn't really help me much because it did not answer the question. What is the pH when enough 0.10 M
2. ## medicine

how can i solve this?prepare 150ml of a 7.5%dextrose sol.you have D5%W and D10%W. how much of each sol. is needed? I assume the 7.5 dextrose is going to be on a w/w basis also. This is really simple, no algebra needed. Since 7.5 is halfway between 5 and

Solve. log(x^3)-log(2)=log(2x^2)
4. ## Math

How to solve this equation Log [log (log x)] =1 5 4 2
5. ## math

Solve and Check√x-6=√3-√x
6. ## math

how do i solve the following: 6 X 10 to the power of one + 5 X 10 to the power of zero + 4 X 10 to the negative power of one?
7. ## math

Solve each system of equations by graphing. Check each solution. The perimeter of a rectangle is 24 ft. Its length is five times its width. Let x be the length and y be the width. What is the area of the rectangle?
8. ## Math

"Find the area of a rhombus with sides of length 10 in. and longer diagonal of length 16 in." and Also, how do you solve the problem "Find the area of a regular decagon with radius 4 cm."
9. ## Math

A scuba diver dives to a depth of 50 feet, then rises 15 feet, sinks 12 feet, then rises 20 feet. Write an expression to describe this situation. Then solve it.

Julie made 206 cookies. 142 were chocolate chip. write the amount of chocolate chip cookies into a fraction. I am not sure how to solve this. Can anyone help me?
11. ## Math

I need help with this question, it says to find the instantaneous rate at distance t = 6s with the given graph First of all, it is a linear line, do i need to find the equation of the graph? After finding the equation, i plug in 5.99 and 6.01? and solve ?
12. ## check math

Here are my answers. Can you check if I got the right answers? Thank you! solve for x, where x is a real number. x^2+3x-4=14 x=6,3 (x^4-1)/(x^3)=0 x=1 (x-5)^2=9 x=2,8 2x^2+5x=8 x= [-5+/-sqrt(89)]/4 for first one x=-6 or x=3, factors are (x+6)(x-3)
13. ## Math

Find the exact solution, using common logarithms, and a two-decimal-place approximation of each solution. log(7x + 4) = 2 + log(2x − 3) Solve the equation. log(x^3) = (log x)^2
14. ## math

There is one coach for every 12 players. How many coaches will be needed for 48 volleyball players? Use a bar diagram to solve. (I know the answer is 4 coaches, but I don't know how to draw the diagram for the problem)
15. ## math

Paul needs 2 1/4 yards of fabric to make a tablecloth. How many tablecloths can he make from 18 1/2 yards of fabric. Define the variable write the equation solve and label.
16. ## math

I have the problem ((square root of h^2+4h+5)-(square root of 5))/h. I am supposed to be finding the limit as h approaches 0 from the right. We are supposed to solve it algebraically and I believe I should be using a the conjugate but I am not exactly sure
17. ## Urgent Math

Solve it step by step! Find the area below f(x) =-x^2 + 4x +3 and above g(x) = -x^3 +7x^2-10x + 5 over the interval of [1 ≤ x ≤ 2]. Show the overlap or shaded area of the graph.
18. ## math

•Explain how writing 2x-5 with positive exponents is similar to writing 2x-3/4 with positive exponents. Post a problem involving a rational exponent for your classmates to solve.

How would you set up this problem if instead of using 1000 feet of fencing, only 750 feet of fencing is used? Solve the problem to find the maximum area..
20. ## math

Explain, in complete sentences, how you would use the graphing method to solve the following system of equations. Provide the solution to the system and explain what the solution represents on the graph. x + 4y = –16 3x + 2y = 12
21. ## Math

Elizabeth pumps 3 1/2 gallons of gas in 1/4 of a tank. How many gallons does a full tank hold? Write an expression to represent the problem. Solve the problem.

The length of a rectangle is 5 more than 3 times the width. Write and solve ad equation to find the width(w) if the length is 12.5cm 12.5= 5 + 3w w=2.5cm is this correct? thank you.
23. ## math ALGEBRA

Solve by graping the foll: A. 2X+Y=5 3X-Y=10 B.2X=Y+1 2X-Y=5 I don't know what "graping the foll" is, but problem #2 has no solution, because the lines Y = 2X -1 (from your fist equation) and Y = 2x -5 (from your second equation) never intersect. gas
24. ## Math

Solve the problem. Round to the nearest unit. 584 is 12.2% of what? I got 47.868852459016 (on the calculator) Just wanted to know if I rounded to the nearest unit correctly. When I rounded I got 4787?
25. ## math

Find a fraction that reduces to 3/4 when both the numerator and denominator are decreased by i, and reduces to 4/5 when both the numerator and denominator are each increased by 1. I know the answer is 7/9, but i don't know how to solve (i must use a system

Two numbers add to 18. If you square the larger number and add 6 times the smaller number you get 163. What are the numbers. Solve with quadratic equation?
27. ## Math

Megan's dog Sparky eats 4 1/4 c of food each day. Explain how Megan can determine how much food to give Sparky if she needs to feed him only 2/3 as much. Solve the problem.
28. ## Math

Elizabeth pumps 3 1/2 gallons of gas in 1/4 of a tank. How many gallons does a full tank hold? Write an expression to represent the problem. Solve the problem:
29. ## Math

Chen’s father was 25 when Chen was born. In 5 years Chen will be exactly half his father’s age. a. Try to figure out how old Chen is now. Describe how you got your answer. b. Now solve the problem using equations.

31. ## math

Have 2 questions: 1. Factor Trinomial competely x^2 + 8x + 53 (reads as x squared plus 8x plus 53) I am thinking it is prime. 2. Solve 4x^2 + 23x - 30=0 (reads 4x squared plus 23x minus 30 equals zero
32. ## math correction

solve for x: 3x - 2y = 6 i need help in solving this: the possible answers has to be one of these: A)2y +6 divided by 3 b)3x -6 divided by 2 C) 2 + 2y D) 2/3y + 6 but how i keep trying and i don't get non of these. Add 2y to both sides of the equation.
33. ## math

draw a model to solve the division problem. The problem is 1 1/2divided by1/4= so I know you make 1 1/2 into3/2 3/2*4/1=6 I know how to do that part but have no idea how to draw a model for it, can you explain it? Thank you
34. ## Math

Suppose dasha has 217 grams of sand in the bucket and 146 grams of shells. What is the mass of the sand and the shells? Write an equation to solve.
35. ## Math

I know that I posted this already but my question has not been answered.. Solve in the exact form. Original problem: (sqrt of 4x+1)+(sqrt of x+1)=2 4x+1 + 2√(4x^2+13x+3) + x+3 = 4 Where does the 2 come from according to the equation above?? This
36. ## Math

Chen’s father was 25 when Chen was born. In 5 years Chen will be exactly half his father’s age. a. Try to figure out how old Chen is now. Describe how you got your answer. b. Now solve the problem using equations.
37. ## Math

Ellory budgets at most \$20 each week for lunch. She has spent \$17.75 so far this week. Write and solve an iequality to determine how much more Ellory can spend and stay within her lunch budget.
38. ## Math

I have the following problem to solve and I am not sure if I have the correct answer. Could you let me know if I do? 1/x+5+2=5/x+5 my answer: -3 your answer is incorretct ..it should be x=2 u just have to practice more often .. Combine like terms first by
39. ## math

The value of a \$20,000 car decreases every year, t. The equation below models this situation. 20000(1 - 0.04t) = 13,000 After how many years will the car be worth \$13,000? Round to the nearest tenth if necessary. I was instructed that the answer is t =
40. ## math

the perimeter of a paved area being built at a playground it's going to be 46 meters is the land and went are each a whole number of meters what should the length and width of the area be to cover the greatest possible area draw a picture and make an
41. ## math

(4.35E-2 - x)(7.56E-2 -x ) ============================ (0.324 + 2x)2 Rearrange to get an expression of the form ax2 + bx + c = 0 and use the quadratic formula (solve for x. This gives: x = 1.05E-2, 0.143 basically i understand they use the quadratic
42. ## math

Mr.Jacobs budgeted \$1,200 for tiles.His sketch of the floor requires him to use 38 white tiles.Each white tile costs \$12.Write and solve an inequality to find the maximum amount he can spend on brown tiles.
43. ## math

Write in terms of cos and sin function. cotx*secx Show work. I know cotx = cosx/sinx and secx = 1/cosx, would that just be the answer or can i solve it?
44. ## math

The population p of a city is given by p=240,360e^0.012t where t=0 represents 1990. According to this model, when will the population reach 275,000? I know that you have to sustitute 275,000 into the p but I do not know how to solve it.
45. ## Math

Find the Zeros of the following functions f(x) = x/3 +5 ^ That one is layed out so differently I don't understand how to solve. In each of the following, determine the zeros of the function and determine the y-intercept of the graph of the function. f(x) =
46. ## math

betsy travel on a bus for 21 miles to school. if betsy travels for a full week. how many total miles did she travel ? Use a drawing and distributive property to solve.
47. ## math 3

the distance between los,angeles,ca and boston .ma is about 3,020 miles. twice a year,Li makes a roundtrip from LA to Boston. how many total miles does Li travel each year for these trips? please solve.
48. ## math

betsy travel on a bus for 21 miles to school. if betsy travels for a full week. how many total miles did she travel ? Use a drawing and distributive property to solve.
49. ## math

i need to know how to solve this shark's teeth are shaped like triangles . the height of a tooth of a certain shark is 2cm longer than the base . the area is 12cm2 find the height and base.
50. ## math

Im having a problem understanding this problem so I cant solve it. Bruce knows how many key are on his keyboard, but some don't work. How does Bruce find the number of keys that work? write to explain
51. ## Math

WHAT 3,000 MULTIPLY BY 583? PLEASE SOLVE MY RIDDLE! IT IS MIDDLE OF THE HOMEWORK HELP PAGE! NAME:SANJANA SUBJECT:RIDDLE 3000 multiplied by 583 is 1,749,000.
52. ## math

how do I solve 28 - 9x = -12 - 11x I tried adding 9x to both sides adding 11x to both sides and doing a million different methods and after i got an answer I went to check it and it was wrong I really don't understand how to do these types of equations

How do I solve this problem: At Carver Elementary, there are 355 students altogether. The School has 25 more female students than males. How many males and females does Carver have?
54. ## math

Hank Kerchief went to the sale, bought a cd at 30% off and received a \$6.00 discount. What was the original price of the cd??? Show work The \$6 discount WAS the 30% reduction off the original price, P. Solve this equation for P: (1 - 0.30) P = 6
55. ## Math

Solve by the elimination method. 4x +5y=1 8x +10y=2 What is the solution of the system? N Type an ordered pair. Type an integer or a fraction. Type N if there is no solution. Type I if there are infinitely many solutions.
56. ## Math

A telephone call costs c cents for the first 3 minutes and 12 cents for each additional minute. Write and solve an equation to find the total cost of 25 minutes call.
57. ## math

15t^2+7t=2 The quadratic formula tells you that the solutions are: t = [-b +/-sqrt (b^2 - 4ac]/ (2a) In this case, a = 15, b = 7 and c = -2 solve the equation for t. What values for t will you get when you substitute the values you listed for a, b, and c
58. ## math

suppose a 24 acre plot of land is being divided into 1/3 acre lots for a housing development project. what is the greatest number of lots possible in the development? so do you solve by dividing 24 and 1/3?
59. ## Math

I was out of school for 4 days! I tried to catch up but....I need help with There are 20 muffuns on a plate. 2/5 are chocolate. 3/10 are vanilla. How many chocolate how many vanilla? Challenge: Rest are blueberry how many blueberry? Can somebody answer
60. ## math

please help me solve this problem, thank you. The ratio of the area of a triangle to the area of a rectangle is 3:5. the difference in their areas is 54 square inches. what is the height of the triangle if its base is 2 times its height?
61. ## math

I don't understand this problem at all. It involves finding the line of best fit. The question says, for a set of data, the line of best fit is y= -3x-4 and that r^2 is 0.22. What is the correlation coefficient? I don't know how to solve this.
62. ## computer or math

pls help me to solve this question. thank you very much binary-decimal conversion a.101= b.1100= c.100110= d.111111= decimal binary conversion a.1216 10 b.2121 10
63. ## math. algebra 2

I need help with this problem I do not understand how to solve this kind of problems....can someone show me and explain it to me thanx. Find a Z-score satisfying the given condition: 82.9% fo the total area a is to the left of z.
64. ## Algebra

can show me how to do this with out just squaring 3x^(1/2) - x - 6 = 0 how do i do this and solve for x with out just squareing and using quadratic formula. I was never taught the proof of the quadratic formula and would like to know how to do with without
65. ## college math/chemistry

chemical reaction: E + S <=> E~S <=> E-S <=> indicates a bidirectional reaction with different forward and backward rate constants. we can call these k1, k2, k3 and k4 in the above equation. Here, the enzyme binds to the substrate; the
66. ## Pre Cal

6-x=2x+9 If you are to solve the equation for x, first try to get the variable on one side of the equation. Let's subtract 2x from both sides to start (whatever operation you do to one side of an equation you must do to the other side as well): 6 - x - 2x
67. ## math

find all solution to the equation 3 cos(x+4)=1. in the interval of 0<x<2pi This is what I got: arccos (1/3)+4 but I cant figure the rest out Solve the following equation in the interval [0, 2pi]. (sin(t))^2=1/2. Give the answer as a multiple of pi.
68. ## math

1) initial investment = \$600 annual % rate = ? time to double = ? amount after 10 years = \$19,205.00 19,205 = 600e^(10r) I do not know how to solve for r of find the time to double.

1) initial investment = \$600 annual % rate = ? time to double = ? amount after 10 years = \$19,205.00 19,205 = 600e^(10r) I do not know how to solve for r of find the time to double.
70. ## math

i am confused with this question. what do i need to use in order to solve this question? eliza must fence in a pool area net to a concession stand with 25 m of fencing? what was the dimensions which will maximize the pool area?
71. ## Math

16 dogs share a bowl of food. Each dog eats half a cup. Write & solve a division equation to find how much dog food was in bowl. Would this be c=16/2 c=8 (c=cups) Thanks for your help.
72. ## math

I need some help with this.. The swim team is selling key chains as a fundraiser. If its goal is to raise at least \$180, how many key chains must it sell at \$1.50 each to meet that goal? Write and solve an inequality.
73. ## MATH

Solve the following equations for x where 0 ≤ x < 2π. tan(x)sin(2x) = √3 sin (x) and cos(2x)−cos(x) = −sin2(x)+1/4  Stuck on these particular types. Have no idea how to start.
74. ## Math integral

What is the integral of 1/(x√(x^2-4)) dx? So I know that I am going to have to factor out the 4 and use the arcsec trig identity but I've having trouble getting to a viable u-substitution. I've gotten to factoring like this so far: √(x^2-4) =

Solve the following problem using a method of your choice. A store clerk who is taking inventory in a toy store of bicycles and tricycles in a certain way. He commented that there are 50 wheels and 40 pedals. How many bicycles and how many tricycles did he

1) initial investment = \$600 annual % rate = ? time to double = ? amount after 10 years = \$19,205.00 19,205 = 600e^(10r) I do not know how to solve for r of find the time to double.
77. ## Math

A gardener is putting a fence along the edge of his garden. If he has 20 m of fence , what is the largest area he can enclose? How can a graph solve the problem? What quadratic equation represents the area of the garden?
78. ## math

betsy travel on a bus for 21 miles to school. if betsy travels for a full week (7 days). how many total miles did she travel ? Use a drawing and distributive property to solve.
79. ## Geo math

Some flowers are being planted in a circular flower bed with a 10-foot diameter. If each flower requires 5 square feet of space, about how many flowers can be planted? What formula do I use to solve this?
80. ## Math (Algebra)

Solve using the multiplication principle -7x <_ 35 the sign is an inequality equal greater or lesser than sign would I substitute the sign for an equal sign and then divide 35 by -7 x=-5 -7 x -5= 35 how would I write the solution set? can someone please
81. ## math

the passenger section of a train has width 2x-7, length 2x+3, and height x-2, with all dimensions in metres. solve a polynomial equation to determine the dimensions of the section of the train if the volume is 117m^3.
82. ## math

Gillian did not attend to school from 17th january 2012 to 4th february 2012.How many days did Gillian miss the school?please anyone to solve it and show clear solution
83. ## math

Becky works 40 hours each week and makes \$320. How much does she make per hour? Use a number line to solve this problem. I have a number line is labeled 0-320 but I cant seem to figure this one out.
84. ## math

this is my another question...please help me to solve this problem. Draw the angle of elevation of the top of a building is 60 degrees and the angle of depression of its base is 15 degrees observed from a window of another building 15m away..

Solve the problem. Anne and Nancy use a metal alloy that is 24.9% copper to make jewelry. How many ounces of a 20% alloy must be mixed with a 27% alloy to form 100 ounces of the desired alloy?
86. ## Math 3

Solve by factoring: One of the solutions to the quadratic equation x^2 - 13x + 30 is 3. What is the other solution? Is it:(x+3) If 3 is a solution, then the quadratic contains a factor (x-3). The other factor is thus (x-10), and it follows that the other
87. ## Math

The passenger section of a train has width 2x-7, length 2x+3 and height x-2 with all dimensions in metres. Solve a polynomial equation to determine the dimensions of the section of the train if the volume is 117 m^3
88. ## Math

Hurricane Kathrina dropped about 14 inches of rain over a 48 hour period. How much rain is this per hour? (round your answer to the nearest tenth) I got 7 so I round it? I did 14/48=x/24 solve for x Then divided 336/48
89. ## Math

Please help me solve this question. Two conjugate diameters of the ellipse x^2/a^2+y^2/b^2=1 are drawn to meet the directrix at P and Q. PM is drawn perpendicular to OQ and ON perpendicular to OP. Prove that PM and ON meet at a fixed point and state its
90. ## Math

From 6:0000 a.me to 11:00 a.me the temperature went up steadily at 40 degree Celsius at a rate of 2 each hour. How many degree Celsius did it increase? What was the temperature at 6:00 a.m? Solve it using block method

The sum of an integer and the next greater integer is at the most 13. Write an inequality to find the lesser integer and solve for the lesser integer. My answer n+n+1 <_ 13 n<_6
92. ## math

Please show me how to set this up and how to solve: A ribbon with straight edges has an area of 24 inches squared. Its width is x and its length is 2x + 13. What is the width of the ribbon in inches?
93. ## 7th grade math - can't figure this out!

A certain computer can perform 10^5 calculations per second. How many calculations can it perform in 10 seconds? I just cannot seem to solve this problem can somebody explain how to do this step by step?
94. ## accelerated math

Hey everyone I need help with solving the following equations: which is 7n * 1/3 written as a quotient? which is 4j * 1/7 written as a quotient? Can you please show step by step how to solve these so I can explain it to my cousin. thanks

2 angles have measures x and y. The sum of the measures of the angles is 180. Write a formula to express this relationship and solve the formula for y.
96. ## math

A Triangle has sides 4,8,and 11. In a similar triangle the shortest side is 8 and the longest side is x. a) Write a proportion that models the situation. b) Solve the proportion for x.
97. ## Math

There are 4 brownies to share among 7 friends . How many brownies woukd each friend get ? A) solve this problem with a diagram and with a equation . B) describe the connections you see between the diagram and the equation
98. ## Math

There's a right triangle. There's an angle that measures 41 degrees. The hypotenuse is x, and the angle opposite 41 degrees measures 25 in length. How can I find what x is? The proportion set up is 25/x, but how do you solve for x?
99. ## Math

Create an equation where the left side is a cubic function and the right side is a cube root function. Make it so that the equation has exactly one solution. Please help me solve thanks
100. ## math

1.In what length of time will \$500 be the interest on \$2500 invested 5% per anum? Is this compounded. I will assume it is not. 0.05 x 2500 x #yrs = 500 Solve for #yrs.