# math..solve for u again

156,312 results, page 79
1. ## 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
2. ## 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

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.
4. ## math

Identify the rate, base, and amount in each rate 75% statement or question. Do not solve the base 150 exercise at this point. 150 is 75% of what number?
5. ## English

1. This is the house where he lives. 2. This is the house in which he lives. 3. This is the house that/which he lives in. 4. This is the house that he lives. 5. This is the house he lives. 6. This is the house he lives in. ============== Among the 6
6. ## chemistry

A flask is charged with 0.124 mol of A and allowed to react to form B according to the reaction A(g) →B(g). The following data are obtained for [ A ] as the reaction proceeds: Time (s) 1 10 20 30 40 Moles of A 0.124 0.110 0.088 0.073 0.054 how do i
7. ## math

solve algebraically and check y=8x+3 y=-4x-21 8x+3=-4x-21 +4x +4x 12x+3=-21 -3 -3 12x=-24 x=-2 y=8x+3 y=8(-2)+3 y=-16+3 y=-13 (-2,-13) check y=8x+3 -13=8(-2)+3 -13=-16+3 -13=-13 y=-4x-21 -13=-4(-2)-21 -13=8-21 so -13=-13 these check, so did I do this
8. ## math

The ratio of boys to girls is 3 to 7. If there are 200 more girls than boys, how many boys are there? Use a tape diagram to solve.
9. ## math

Solve the trigonometric equation from 0¡ã¡Üx¡Ü360 tan⁡x+¡Ì3=0 2 sec^2⁡x+tan^2⁡x-3=0
10. ## Math help

You have \$59.95 in your wallet and want to buy some new CDs. If the CDs are \$11.99 each, what number of CDs, x, can you buy? Write and solve an inequality.
11. ## Math

A 120-ft long playground is just 15-in on the scale drawing.What is the scale on the scale drawing? How would you solve this question?
12. ## Math

/ - fraction sign, not a division sign Solve the following equation -4=7/33x a. x=132/7 b. x=-132/7 c. x=-7/132 d. -33/28

How do you solve sin2θ−cosθ=0 between -pi/2 less than or equal to θ less than or equal to 3pi/2?
14. ## math

i need to find when the function increases or decreases, this is the derivative of the function (10 − 3x)/(2 ¡î5 − x) but how do you solve the function when x is zero?
15. ## algebra

solve the square root of 2a-1 is equal to 5 solve c- the square root of c is equal to 30
16. ## Algebra

r= -0.075t + 3.85 solve for t r=3.7 -0.075t + 3.85 < 3.7 -0.075t + 3.85 - 3.85 <3.7 - 3.85 + 0.15 -0.075t/-0.075 > -0.185/-0.075 This is as far as I can get - now how do you solve for t?
17. ## Physics

A simplified model for an erythrocyte is a spherical capacitor with a positive inner surface of area A and a membrane of thickness b. Use potential difference of 94 mV across the membrane and a dielectric constant K = 5.0. If the capacitance of the
18. ## Algebra

Solve Q= (N-S)/ N for N So when I multiply both sides by N I get Q(N)= N-S I know I am doing something wrong, the answer is in the book which is N=S/(1-Q)but I don't understand were the 1 comes from. Could you write it out step by step, so I can see what I
19. ## Math

7 billion chocolate chip cookies are consumed annually. In order to find out how many cookies are consumed on average by every person in the United States, what other information would you need to know in order to solve the problem?
20. ## Math

if a flagpole is 20ft tall and casts a shadow of 27ft how tall is a building that casts a shadow of 185ft? write a proportion and solve. round your answer to the nearest foot.
21. ## MATH

Use a proportion to solve the problem. Under typical conditions, 1 1/2ft of snow will melt to 2 in. of water. To how many inches of water will 3 1/4 ft of snow melt? Express your answer as an integer or mixed number.
22. ## math

In his algebra class, Rob has scores of 79, 85, 81, and 65 on his first four tests. To get a grade of C, the average of the first five tests must be greater than or equal to 70 and less than 80. Solve an inequality to find the range of scores that Rob can
23. ## MatH

1.solve the inqulitey m-7<6 m<-13 m<1 m<-1 m<13 2.n-8>5 n>-13 n>1 n>13 n>-1 3.p+5<10 p<-15 p<5 p<15 p<-5 4. the science class is taking a trip to the science center. There are 20 students and an unknowed number
24. ## math

Susan has \$25. She is going to spend \$4 on a book, then \$3 per day on lunch. a)Write an equation that represents the following question: "How many days can Susan buy lunch using this plan?" b) Solve your equation, and check your solution.
25. ## Math

Mr. shows bought movie tickets for the members of his family and spent \$12.50 on popcorn. He spent a total of \$46.25 for his family to go to the movies. How many tickets did he buy? (Write an equation containing a variable and solve)
26. ## Math

Mrs.Perry hires a landscaper that charges \$15 per hr. The landscaper says the total charge for the work done is \$120.00 Write an inequality to show h, the number of hours it took to do the work and solve the inequality.
27. ## math

The Randolph’s used 12 more gal of fuel oil in October than in September and twice as much oil in November as in September. If they used 132 gal for the 3 months, how much was used during each month? I can solve the problem but I need to figure out the
28. ## algebraic expressions 5th grade math

larry and martha each planted the same number of carrots seeds in their gardens.After 4 weeks,larry had c carrots and martha had 6 more(write an expression)please help me solve,thank you
29. ## math check if right plz

your schools football team scored 49 points. your team score was 19 points more than your opponent scores. write and solve an equation to find the opponents score is this right. 49-19=s and s would be 30?
30. ## Math

3.Josh has a huge marble collection. He counts 280 marbles that are red, and he estimates that this is about 10% of his collection. A.Write and solve a proportion to estimate the total number of marbles Josh has.
31. ## maTH

1.solve the inqulitey m-7<6 m<-13 m<1 m<-1 m<13 2.n-8>5 n>-13 n>1 n>13 n>-1 3.p+5<10 p<-15 p<5 p<15 p<-5 4. the science class is taking a trip to the science center. There are 20 students and an unknowed number
32. ## Math

Can someone check my answers? And if there wrong can you help me? 1. y-5 / 3 = 1 -2*** 8 18 6 Combine like terms: 3. -21a + -16a -5a 5a 37a -37a*** Simplify the expression: 4. 9a - b - 2a - 10b -7a +11b 11a + 9b -11a + 9b*** 7a + 11b 5. 5(x+10)+ x 6x + 15
33. ## Math

The perimeter of a rectangle is 36ft. the length is 10ft. longer than the width find the dimensions. Write a system linear equation an solve the resulting system let x be the length and y be the width.
34. ## math, beginning algebra

how do i solve the following equations. Problem # 1 3x greater than or equal to 2x minus 4 can someone correct number 2 Problem # 2 7(x-3)> 5x-14 7x -21 > 5x -14 7x-5x>-14-21 2x>-35 3x is greater than 2x minus 4. 3x>= 2x-4 subtract 2x from
35. ## Math

Have been given a table of values and to complete it using the equation, y = x^2 - 3x + 10. (-1,14), (0,10), (1,8), (2,?), (3,10), (4,?) and (5,20). You draw a graph, using 2cm=1 unit on x-axis and 2cm=2 units on y-axis. Now my question is...how do you
36. ## MAth

1.solve the inqulitey m-7<6 m<-13 m<1 m<-1 m<13 <-- 2.n-8>5 n>-13 n>1 <-n>13 n>-1 3.p+5<10 p<-15 p<5 p<15 p<-5 <-- 4. the science class is taking a trip to the science center. There are 20 students and
37. ## Math

The perimeter of a rectangle is 42ft. The length is 7ft. longer than the width. Find the dimensions. Write a system of linear equations and solve the resulting system. Let X be the length, and Y be the width.
38. ## math 117

1. Answer the following questions. Use Equation Editor to write mathematical expressions and equations. First, save this file to your hard drive by selecting Save As from the File menu. Click the white space below each question to maintain proper
39. ## Math

1. Write the following ratio in simplest form: 32 min:36 min 8:9 8:36 32:9 128:144 2. Marie saved \$51. On Wednesday, she spent \$8 of her savings. What ratio represents the portion of her total savings that she still has left? 43:8 8:51 43:51 59:51 3. The
40. ## PHYSICS helppppp

a horizontal wire is stretched between two vertical poles. when a 12.0-N weight is suspended at its center, the wire sags until the angle between its halves is 110 degrees. what are the forces exerted by each half of the wire in supporting the weight? i
41. ## MATH

Solve the differential equations? (calculus) a) square root cotany/ (1+x^2)sin^5y dy/dx = e^x^3 +3x/ square root cotany b) y^2/cosx dy = e^sinx/ e^y^3-1 dx
42. ## math

Solve each equation. What am I doing wrong because the answer is suppose to be 11/2 and I don't get the answer. Here's what I'm doing... Problem: 2x+1/4-3x-4/5=1/2 I get: 10x+5-12x-16=10 Which gives me -2x=21 My answer is -21/2 the correct answer is
43. ## math

The width of a basketball court is 1 m more than half the length. If The area of the court is 364m^2, find the length and width. how would you solve this problem? please help me.. =)
44. ## math

Consider the function: (-2x^2 - 2x-4) y = 2x^2 - x +10 Find y â€² using implicit differentiation. Do not solve for y. What is the slope of the tangent at (x,y) = (2,âˆ’1)? Find y â€² by solving for y and using the quotient rule. What is the
45. ## Math (Help) thx!

Solve the system using elimination. −7x + 15y = 95 7x − 15y = 115 A. (7,935) B. (935,7) C. (15,1313) D. no solution
46. ## math

Consider the function:(-2x^2 +3x -7) y= -2x^2x +3x +17 Find y ′ using implicit differentiation. Do not solve for y. What is the slope of the tangent at (x,y) = (−1,−1)? Find y ′ by solving for y and using the quotient rule. What is the slope of the
47. ## math

In UIL number sense can someone tell me how to quickly solve the following type problem in my head. I know how to do it on paper, but paper is not allowed in number sense. 79-26
48. ## math

Please help me solve this problem... thanks! 1.Find the equation of the line that cntains the pont (5, -1) and has slope -1/2 2.find the equation of the line that passes through the points (-2,1) and (1,-5)
49. ## math(am i right)

determine whether (-5,1) is a solution of 9x-9y= -3 I said no am i correct? solve by elimination mehtod. 2x+3y=4, 4x+6y=8 type as ordered pair, type N for no solution, I for many. I chose I am I correct?
50. ## math

Solve: Eighty people were invited to vote in thr extension club's elections and 9/10 of them voted. How many people voted in the elections?
51. ## math

Write a proportion for each phrase. Then solve. When necessary, round to the nearest hundredth. 75 points scored in 6 games; p points scored in 4 games
52. ## math

Solve the problem. An average library contains at least 50 and at most 250 books. How many library owners must be polled to be certain that at least two owners have the same number of books in their libraries?
53. ## math

a=3,b=2,c=2 would this make a triangle? if so, how would i find the angles? thanks for helping. You would find the angles using the cosine law. When all three sides are given to a triangle, you can solve for each angle.
54. ## Math

Solve: Eighty people were invited to vote in thr extension club's elections and 9/10 of them voted. How many people voted in the elections?
55. ## Math

You find out your faucet is leaking 10 pints of water every 3 hours. After 6 hours, how many gallons of water will have leaked from the faucet? How do I solve this problem?
56. ## math

Hi, How do I find the coefficient of variation? I found the sample variance and the standard deviation for the problem I'm trying to solve, but I can't find the coefficient of the variation
57. ## math

john has 24 baseball cards. chard has 13 more cards than john. draw a comparison problem to illustrate how to solve the problem, then slove
58. ## math

Hi, How do I find the coefficient of variation? I found the sample variance and the standard deviation for the problem I'm trying to solve, but I can't find the coefficient of the variation
59. ## plz help math

The formula for the force between two objects is F=GMm/r^2 where M and m are the masses of the two objects, G is a constant, and r is the distance between them. Solve the formula for m .m=Fr^2/GM m=r^2/FGM m=GM/Fr^2 m=FGM/r^2

how to i solve this problem asked previously unsatisfied with ans. Jack and Jill copared results on math test. Jack had 40 correct ans & Jill had 50 correct ans. There were 32 questions they both had correct and 6 they both had wrong. How do I determine
61. ## economics

assume that the demand and supplu equations for bushels of wheat are as follows Qd=15-(3*P) Qs=1+(4*P) Also assume that, the equilibrium, Qd=Qs solve for equilibrium price by setting quanity demand equal to quanity supplied. what is the disequilibrim
62. ## algebra

Solve the inequality. |2x+3|< 26 So there are two answers to this problem? Do you switch the inequality sign for the second answer? This is the absolute value of some quantity I suppose. We have |2x+3|< 26 Thus we want numbers such that -26 < 2x+3
63. ## math

For my class you have to choose from several different scenarios, make up your own equations from the scenario, and then solve and graph them in excel. I have chosen the following scenario: Evaluate whether a prepaid or monthly cell phone plan is most
64. ## math

how to solve for radius of horizontal curve with coordinates(NE) for points A,B, C on the curve Point A : N1405.4018 E1256.7569 Point B : N1283.3703 E1294.7027 Point C : N1225.9373 E1286.6137

front end estimation to estimate the sum...like..436+517= ~~~~~~also we have some problems that say use rounding to estimate the sum...like..236+710=....DO WE DO BOTH OF THESE THE SAME WAY??? solve then estimate??? my child has been out from school for a
66. ## Math

Toni rows a boat 4.5 km/h upstream and then turns around and rows 5.5 km/h back downstream to her starting point. If her total rowing time is 48 min, for how long does she row upstream? you can express your answer to the nearest minute. I don't understand
67. ## 8th grade math 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! You said: Denise has \$50 and wants to buy two new
68. ## math

Navigation. The current in a typical Mississippi River shipping route flows at a rate of 4 mph. In order for a barge to travel 24 mi upriver and then return in a total of 5 hr, approximately how fast must the barge be able to travel in still water?Solve by
69. ## math

the height, h, of a ball t seconds after it is released for a jump shot in a basketball game can be modeled with the equation h = −16t2 + 12t + 8. The rim of the basket is 10 feet high. Which of the following is the correct way to set up the problem
70. ## Math/Physics

A 500kV power line has a maximum permissible Voltage drop of 3% and is design to carry 1000 Amps. If the conductor has a 0.026 ohms/km resistance, what is the maximum distance the conductor can be run (to the nearest complete km)? Hint: P=IE, E=IR How do I
71. ## math

10.On 16 april 1990, RM5000 was invested at 6% compounded semi annually. Find the amount accumulated on 16 october 1993 if the rate was charged to 8% compounded quarterly beginning 16 april 1992. the answer is : RM 6339.24 i want to know the step to solve
72. ## Math, Geometery

Hey Guys I have a problem like on the kids on here. What is the area of a regular pentagon with a side length of 10 inches and a distance from the center to a vertex of 10 inches? Round by nearest tenth. I know you have to use pythagrean therom to solve
73. ## 6th Math

Don decided to do some landscaping in his backyard. He began by watering the lawn. The rotating sprinkler that he installed can spray an area with a radius of 7 feet. What is the maximum area the sprinkler can cover? a. 21.98 ft(2) b. 28.26 ft(2) c. 43.96
74. ## science and medicine

I don't have any idea how to solve this. Could someone show me the steps in solving this word problem? I am at a loss! Abus leaves a station at 1 pm., traveling west at a rate of 44 mi/h. One hour later a second bus leaves the same station, traveling east
75. ## Math- urgent

A golf ball can travel 170 mph. This is 10/7 times the fastest speed recorded for a hockey puck. What is the record speed for a hockey puck? Make and equation and solve.
76. ## math 115

1. Nina's car payment is \$362.57 per month for 4 years. how much will she pay altogether? \$17,401.92 is this correct? 2. solve the unknown. 4/X= 3/15= 60/X is this correct? 3.write 2/5 as a percent. = 40% is this correct? 4. write 78% as a decimal. 0.78 is
77. ## math

Sketch f (x) = x + cos x on [-2pie,2pie ]. Find any local extrema, inflection points, or asymptotes. And find the absolute maximum and absolute minimum values of f on the given interval. i cant seem to figure out how to solve this
78. ## Math

A boat in calm seas travels 19 km east and 32 km south. Find the distance and direction of the trip, relative to the south. What is the distance? What is the direction? I'm confused about how to solve this problem. Could someone show me the steps?
79. ## math

Solve this problem plz... A rectangle has an area of 288 cm square.if the width is decreased by 1cm and length is increased by 1 cm the area would decreasedby 3 cm square.fin the original dimension of the rectangle.
80. ## Math

A boat in calm seas travels 19 km east and 32 km south. Find the distance and direction of the trip, relative to the south. What is the distance? What is the direction? I'm confused about how to solve this problem. Could someone show me the steps?
81. ## math

Assume that there are 16 frozen dinners: 8 pasta, 4 chicken, and 4 seafood dinners. The student selects 5 of them. What is the probability that at least 2 of the dinners selected are pasta dinners? I tried this:
82. ## math 209

The perimeter of a rectangle is 44ft the length is 4ft longer than the width. Find the demensions. Write a system of linear equations and solve the resulting system. Let x be the length and y be the width.
83. ## math

In new Your a taxi costs 72 cents for the first 1/10th of a mile and 15 cents for every additional 1/10th mile. How much does it cost to drive 6 miles? Set up and solve? I do not understand how you got this answer...can you explain? .72+ .15(6-.1).1 =
84. ## math

Wallace has a \$500 budget for a pizza party. Pizzas cost \$12 each. He will also purchase drinks for \$30, paper plates for \$15 and napkins for \$6. Write and solve an inequality that shows how many pizzas Wallace can purchase.
85. ## Math

The shortest side of a right angled triangle is 7cm less than the second shortest side. The sum of the squares of these two sides is equal to 289cm^2. The perimeter of the triangle in cm is? I don't get how to do this, I think Im meant to use a quadratic
86. ## Math

So my teacher is making me solve systems by graphing. One of them was 3x + y = 6 and 2x + 3y = 13 . I converted both of them into slope intercept form and got y = -3x + 6 and y = -2/3x + 13/3 . The thing is I don't know how to graph a fraction ?!?!?! And
87. ## Math word problem

The Mad River flows at a rate of 3 km/h. In order for a boat to travel 78.2 km upriver and then return in a total of 8 hr, how fast must the boat travel in still water? what formula would be used to solve this problem?
88. ## Math

This needs to be solved and put in equation form. Seems simple but not sure if I am figuring it right. Jill has \$3.50 in nickels and dimes. If she has 50 coins, how many of each type of coin does she have? use the equations and solve n ---> number of
89. ## Math

hi how would we solve a question like this? for the curve with eq'n 2x^2 - x - 1 y= _______________ x^2 - 2x - 3 determina all x- and y-intercepts I assume you meant y = (2x^2 - x - 1)/(x^2 - 2x - 3) both top and bottom factor but there is no advantage
90. ## chemistry

Calculate the percent ionization of a 0.15 formic acid solution in a solution containing 0.11 potassium formate. I have the formic acid Ka=1.8 *10^-4 When I solve for "x" I'm getting 1.1.44*10^-2 When I plug that into equation (x/0.15-x)*100, I'm getting
91. ## Math

Solve each equation to the nearest tenth and use the given restrictions. sin θ = -0.204 for 90 degrees < θ < 270 degrees. I don't get this. Is this supposed to be restricted to quadrants 2 and 3? Then it doesn't seem possible to get a value
92. ## Math

1. Determine which ratio forms a proportion with 9/5 by finding a common multiplier. a. 54/30 b. 45/50 c. 45/40 d. 90/20 2. Determine which ratio forms a proportion with 15/8 by using cross products. a. 25/16 b. 30/12 c. 60/32 d. 75/32 3. Solve 3/27 = w/54
93. ## Math (Pre-Calc)

If any body could help me figure out these problems. I would love to know how to do it, and not just get an answer, however if you don't have the time to explain it to me, then the answer will suffice. 6. (1 pt) Solve the following equation in the interval
94. ## Algebra

1. If m∠1=37º , what is m∠4? a) 53º b) 43º c) 37º d) 27º 2. If m∠1=50º , what is m∠5? a) 50º b) 40º c) 35º d) 25º 3. If m∠4=25º , what is m∠8? a) 105º b) 75º c) 175º d) 25º 4. What is the sum of the
95. ## math

2.)If f(x)=3x,g(x)=x-3,and h(x)= the square root of x, find (fogox)(X). I really didn't get this will someone please show me how to do it? This I what I did to solve for it: 3(x-3) 3(he square root of 25-3 3(5-3) 15-9=6 Ok here is another way I solved for
96. ## math

2.)If f(x)=3x,g(x)=x-3,and h(x)= the square root of x, find (fogox)(X). I really didn't get this will someone please show me how to do it? This I what I did to solve for it: 3(x-3) 3(he square root of 25-3 3(5-3) 15-9=6 Ok here is another way I solved for
97. ## Algebra 2

Solve and write in interval notation: -3 ¡Ü (x − 4) / 2 < 4 Solve and write in interval notation: -7 < 4x − 3 ¡Ü 7 Solve and write in interval notation: -4x − 2 < 6 AND 3x ¡Ý -6
98. ## math

What is the value of t in the equation below? (7^-64)x(7^-150)/(7^-7)x(7^2)=7^t Help please i get lost when its a huge problem like this but if it's short i can solve it. (7^-64)x(7^-150)/(7^-7)x(7^2) = 7^(-64-150+7-2) = 7^-209 so, t = -209 answer is= 209
99. ## Physics

An 103 Newtons box of oranges is being pushed across a horizontal floor. As it moves, it is slowing at an acceleration of -0.9m/s2. The push force has a horizontal component of 20N and a vertical component of 25N downward. Calculate the coefficient of the
100. ## Calc

A student is in a 20 week calc class. The function f(t)=50-50e^0.2t f(t) measures the students problem speed in t weeks -how many problems per hour can a student solve at the beginning of the course - how many problems per hour can a student solve halfway