# Questions Asked onMay 30, 2016

1. ## Math (Calculus)

Find the positive value of the parameter t corresponding to a point on the curve parametrized by {x= t^2 +3 ; y=t^2+t for which the tangent line passes through the origin. I tried with 2t+3 and 2t+1 but it isn't successful

2. ## Math (Polar to Cartesian Equations)

Convert the given polar equation to a Cartesian equation. r^2=4sec(theta)csc(theta)

3. ## physics

a car travels 4km in 3 minutes.find the speed of car in cms-1

4. ## Math

A paper cone has a base diameter of 8cm and a height of 3cm(a) use Pythagoras theorem to calculate it's slant height (b)if the cone is cut and opened out into the sector of a circle what is the angel of the sector

5. ## physics

A scooter acquires a velocity of 30km/hr in 10 seconds just after the start.it takes 20 seconds to stop.calculate the acceleration in the two cases

6. ## algebra

In his physics class, Mario discovered the height, h, in feet of a bouncing basketball after b bounces is given by the formula: h = 12(2/3)b - what is the height of the ball after 3 bounces?

7. ## Psychological

Which of the following statements regarding the nature of stress is true? A. Accumulating hassles may well lead to a sudden onset of PTSD. B. Psychophysiological disorders are primarily mental disorders. C. Continued exposure to stress is associated with

8. ## Math1

An explosives company specializes in bringing down old buildings. The time it takes for a particular piece of flying debris to fall to the ground can be modelled by the function h(t)= -12(t+2)^2 + 120(t+2), where h is the height of the debris in metres and

9. ## algebra

a cheetah ran 300 feet in 2.92 seconds. What was the cheetahs average speed in miles per hour? Please show steps.THANKS!!

10. ## language arts

Stage directions are one element of a drama. In a paragraph, define and provide an example of stage directions from A Surprising Point of View. Then analyze the stage directions. Explain how these directions contribute to your understanding of A Surprising

11. ## Math

Write each expression using a single exponent 1. x^9/x^2 a)x^11 b)x^7

12. ## Math

For questions 3 and 4, simplify each expression. 1. 4^4/4^6 -16 16 1/16

13. ## Math2

A qulliq is an oil lamp that functions as the main source of light and heat for an igloo in the Inuit culture. It is made of soapstone shaped as a parabolic bowl that contains seal blubber for the oil. It is lined with Arctic wool for the wick. If the

14. ## algebra

Write a compound inequality that the graph could represent. Please exlain and show if you can. Thank you...

15. ## chemistry

What particle is needed to complete this equation 14/7N+ _______=14/7C+ 1/1H I think it is a beta particle because of beta decay and transmutation. I could be really off because this chapter is really confusing me.

16. ## Chemistry

Consider the compounds 4-tert-butylcyclohexanol and 4-tert-butylcyclohexanone. Using silica gel plates, which of the two compounds will have the higher Rf value when ethyl acetate is the developing solvent? Which will have the higher Rf value when

17. ## Math ---HELP!!!!!

sample of nine students is selected from among the students taking a particular exam. The nine students were asked how much time they had spent studying for the exam and the responses (in hours) were as follows: 18, 7, 10, 13, 12, 16, 5, 20, 21 Estimate

18. ## Math

Lisa and Katie are playing a card game, and a total of 900 points has been scored. Lisa scored 400 more points than Katie. If you let l= l= the number of points that Lisa scored, and k= k= the number of points that Katie scored, then the problem can be

19. ## Math

Solve the equation e^x-10=10. Do I have to change it to log form? What do I do after that?

20. ## Math help!

5. Replace the ___ with , or = to make a true statement. 7^4/7^2____ 49 < = none of the above multiply the following polynomials. 6. –2r(8r + 5) –16r^2 + 5

21. ## Physics

A garden hose has an inside diameter of 10 mm, and water ﬂows through it at 4.0 m/s. At what rate does water leave the nozzle?. Answer in m3/s

22. ## English

Check my answer? Is the Doll's house by Katherine Mansfield considered a modern short story or a traditional short story? I think it is considered a modern short story because it uses dramatic irony, and and is concerned with character development and

23. ## Chemistry- Dr.Bob222

Using the Nernst equation, determine the diluted concentration for both cells. Show your work. Sn| Sn2+(diluted)||Cu2+|Cu Zn| Zn2+ ||Sn2+(diluted)|Sn

24. ## physics

What is the strength of intermolecular forces in methylated spirit, acetone, water, glycerin and oil

25. ## Chemistry

Using benzene as an example to illustrate substitution reaction

26. ## math

A boy wants to chop a log of wood into 10pieces.he takes 10 minutrs to cut one piece.how much time will he take to chop all 10 pieces

27. ## cwi

The sum of the measures of the angles of any triangle is 180 degrees. In triangle ABC, the measure of angle A is 70° more than the measure of angle B. The measure of angle B is twice the measure of angle C. Find the measure of each angle.

28. ## Algebra

A taco stand sells tacos for \$3.35 easch. The stands expenses for the day are \$210. Define our variables and write an inequality to represent the amount of tacos they need to sell per day to make a profit, and then solve the inequality. Provide your

29. ## History

which of these was a result of the punic wars? A. Rome lost Hispania to Carthage B. Rome's navy became higly advanced C. Rome developed trade relashonships with China D. Rome destroyed Cannae Ilphia Thank you soooooooo much for your time!

asked by Thanks for helping me!
30. ## Chemistry- Dr.Bob222

Which metal could you use to reduce Cr3+ ions but not Mn2+ ions? Which metal could you use to reduce ions but not ions? Zn Mg Ni Al

31. ## chem

a gas mixture is comprised of 32% oxygen and the rest is nitrogen. If the scuba tank is pressurized to a total pressure of 132 atm what are the partial pressures of the oxygen and nitrogen inside the tank? I'm having trouble understanding how to find

32. ## Math

At a point p 20m away from the foot of the tower, the angle of elevation of the point p is 45.calculate the height of the tower.

33. ## math

Skip is practicing tennis serves against a wall. The distance between Skip and the tennis ball, in feet, at any time T, measured in seconds, is D(T)=-1.5|T-8|+9. which analysis of the formula is true? A. Skip is 9 feet from the wall and the ball will

34. ## math plz help ;-;

1. Solve the system by any method: 2x-5y=-1 2x-y=1 How many solutions does the system of equations below have? Explain your answer. y=3/5x-1 y=6/10x+3 plz help me ;-; i don't understand how to do this, sorry ;-;

35. ## Chemistry

A 25.0-g sample of sodium hydroxide is dissolved in 400.mL of water. What is the concentration of the solution?

36. ## Math ---HELP!!!!!

A bag contains 4 red marbles, 3 blue marbles, and 7 green marbles. If a marble is randomly selected from the bag, what is the probability that it is blue? A. 2/11 B. 3/11 C. 5/14 D. 3/14 D

37. ## Waste water treatment

In wastewater treatment, what is the required open screen area (m2) for reaching this screen velocity during treatment of the rain weather flow when dimension of the pre-treatment unit for the wastewater treatment plant is receiving a dry weather flow

38. ## English

1. He moved to New York last year. 2. He moved into New York last year. 3. He moved in New York last year. -------------------- Is #3 not correct?

39. ## Physics

Water ﬂows through a ﬁre hose of diameter 6.35 cm at a rate of 0.015 m3/s. The ﬁre hose ends in a nozzle of inner diameter 1.750 cm. At what speed does the water exit the nozzle?

40. ## chemistry

A) what is the molar fraction of each gas in a mixture of 6g of hydrogen H2 and 7g of nitrogen N2 ? B) what is the total pressurd exerted by the above mixture in a volume of 15 l at a temperature of 0ºc ? C) what is the partial pressure of each gas in the

41. ## Algebra

A car and a bus leave at the same time from same location. The speed of the car is 7mph faster than twice the speed of the bus. After 2.5 hours they are 100 miles apart. Find the speed of each.

42. ## chemistry

the ph of the resulting solution when 1.15g of sodium metal is reacted slowly in 500cm3 of water is close to

43. ## math

in circle p, chord cd is 12 inches long and measure of arc cd=90°, find the exact area of the segment bounded by chord cd and arc cd.

44. ## Math

Lina is now 5 times as old as Bob, but 7 years from now, she will be 3 times as old as he will be then. How old is Lina now?

45. ## Physics

A bus accelerates at 2.0m/s²[E]. A women inside the bus is walking at 2.0 m/s [E]. What is her velocity realtive to the ground at: a) 1s b)2s ? The answer provided don't seem right: a) 0.5 m/s[W] b) 3m/s[W]

46. ## math

You deposit \$400 in a savings account that earns 7% interest compounded annually. What is the function that represents your balance after t years?

47. ## U.S. History Question

True or false? Stokely Carmichael was the leader of the Student Nonviolent Coordinating Committee (SNCC). A: True

48. ## Math

12 ounce can of Coke and 8 ounce carton of apple juice. She drank all of the Coke and only 1/2 of the apple juice. There are 30 ml in each ounce of liquid. How many ml did Mrs. Heath drink?

49. ## math, science etc

T=(pq/r)-rq make q subject of formula

50. ## Physics

At what speed does water escape from a large open-top tank through an opening 2.00 cm in diameter. The opening is 3.00 m below the water level of the tank on the side of the tank.

51. ## Math..help

Multiply: (3a-(7/9))(3a-(7/9))

52. ## Trigonometry

if cos=2/5, find the exact value of cos2x

53. ## Physics

Water flows at a rate of 8.0 L/s through an opening at the bottom of a tank that has a diameter of 4.0 cm. How high is the water level of this open- top tank?

54. ## Physics

At one end of the Venturi Tube the pressure and speed of flowing water is 21 kPa and 0.05m/s respectively. At another point the pressure is 5 kPa. Find the speed of the water at the second point. Answer in m/s

55. ## Algebra 1

A rectangular patio has a length of f(x)=4x-3 and a width of g(x)=x-4. If the patio's perimeter was 84 feet, what would the value of x be? Please explain!!

56. ## Math ---HELP!!!!!

A researcher wishes to estimate the mean amount of money spent per month on food by households in a certain neighborhood. She desires a margin of error of \$30. Past studies suggest that a population standard deviation of \$248 is reasonable. Estimate the

57. ## Algebra 1

How do you solve 10x-98=0?

58. ## Math - volume about y axis

Find the volume generated by revolving the region enclosed above by the x-axis and the graph of the function f(x) = x^2 -1 about the y-axis. I cant make sense of it. What is it asking me to do? What are the integral bounds?

59. ## Maths

P, q, r are arranged sticks. P is 10km north of q. The bearing of r from p is 223, and the bearing of q from r is 097. Find the distance of r from p. Show full working both the bearing resulting diagram and the formular

60. ## math

From an external point E, tangents ES and ET are drawn to circle O. if m

61. ## Math

P, Q, R, are arranged sticks. P is 10km north of Q. The bearing of R from P is 223, and the bearing of Q from R is 097 find the distance of R from P

62. ## Math Calculus I

let f(x)= 6sin(x)/(2sin(x)+6cos(x)) The equation of the tangent line to y= f(x) at a= pi/6 can be written in tthe form y=mx+b where m=? b=? I found the f': (9*(cos^2(x)+sin^2(x)))/(3cos(x)+sin(x))^2 but i don't know how to fill it into the form. Can anyone

63. ## Chemistry

Define indicators giving four examples and their PH ranges

64. ## Algebra

Miachel wants to double the area of his garden show below by increasing the length and width by the same amount. what will be the dimensions of his garden then? use a representation and equation to solve

65. ## Chemistry

Write on the physical properties of benzene

67. ## Chemistry

Write short note on sigma bond and pi bond

68. ## Math

Hi, I have been trying to figure this one math problem for awhile and I am stuck. I believe the answer is between A or B. Skip is practicing tennis serves against a wall. The distance between Skip and the tennis ball, in feet, at any time T, measured in

69. ## math

for a triangular prism, the areas of the lateral faces are 18in^2, 26in^2 and 34in^2. if the area of the base is 16in^2, find the total area of the prism.

70. ## Statistics

Suppose a fair coin is tossed five times and let x be the number that turned up in those five times. **the mean and the standard deviation are respectively... a.) 0.5, 0.5 b.) 2.5, 0.5 c.) 2.5, 2.24 d.) 2.5, 1.12 **find P(x≥1) a.) 0.5 b.) 1.0 c.) 0.03

71. ## Math

1. Identify the following functions as linear or nonlinear: xy = -9 y = 3x x + 7 = y y = x - 4 y = x^2 x + y - 20 = 2x 1/2x = y y = 5/x y = 30 - x^2 thank you

asked by I NEED HELP MS SUE
72. ## algebra 1

NEED HELP!!Hi, I have been trying to figure this one math problem for awhile and I am stuck. I believe the answer is between A or B. Skip is practicing tennis serves against a wall. The distance between Skip and the tennis ball, in feet, at any time T,

73. ## Algebra

the product of two consective odd integers is sixty-three. find all such number.

74. ## Algebra

If eleven is add to the square of a number, the result is sixty. Find all such numbers.

75. ## Math (pre-celc 12)

Write the expression as a single logarithm: 3log(a)-log(b)-(1/2)log(c) I want to check my answer. I got log(a^3/bc^(1/2))

76. ## Maths

Two house A and B are 100m apart and B is due east of A. The bearing of a church c from A is 145 and from B is 225, which house is nearer to the church and by how much

77. ## Civics Presentation (Writeacher)

Will someone help me construct a layout for this project? It's due Thursday. On your power point, you should develop a presentation that identifies the party, tells us meaningful information about the party platform, and tries to convince us not only to

78. ## English

1. You should not miss breakfast. 2. You should not skip breakfast. --------------------------------- Are both the same? What is the diffference? 3. Stand in a row. 4. Stand in row. 5. stand in rows. 6. stand in two rows. (Can we use the expressions

79. ## math

The road from the town of Wolford to the village of Abbotshead is measured as 5.8 cm on a map. If the scale of the map is 1:50 000, calculate the real distance between the 2 places in km

80. ## Math

you accept a job with a salary of \$35000 for the first year. suppose during the next 39 years you get a 5% raise each year. What is your total compensation if you work for a total of 40 years?

81. ## Math

Many has two boxes one contains 10 colored pencils 4 of witch are red and 6 which are green the other box onther box contains 7 markers and which 4 are red and 3 are blue what's the probability of of many choosing green green pencil and red marker

82. ## Algebra 1

An airplane travels for seven hours with a 60 mph tailwind on the return trip against the same wind it took the plane nine hours find the speed of the plane with no wind.

83. ## Math

1. If you roll a number 52 times; how many times can you expect to roll a number 4? I do not understand Probability and a GEM test is coming up Thursday Please Help!!!!!!!!!!!!!!!!!!!!!!!!!!!!

84. ## physics

A horizontal pipe (Venturi Tube) 10.0 cm in diameter has a smooth reduction to a pipe 5.00 cm in diameter. If the pressure of the water in the larger pipe is 2.0 x 105 Pa and the pressure in the smaller pipe is 5.0 x 104 Pa, at what rate does water flow

85. ## maths

Two boat A and B left a port at the same time on different route. B traveled on the bearing of 150 degree and A traveled on the north side of B when had traveled 8 kilometer and B had traveled 10 kilometer. The distance between the two boat was found to be

86. ## math

Hi, I have been trying to figure this one math problem for awhile and I am stuck. I believe the answer is between A or B. Skip is practicing tennis serves against a wall. The distance between Skip and the tennis ball, in feet, at any time T, measured in

87. ## Math

There were 240 children in a school.60%of them were girls. How many girls were in the school

88. ## Math

Kim throws her basketball up from the ground toward the basketball hoop from a distance of 20 feet away from the hoop. The ball follows a parabolic path and returns back to the gym floor 5 feet from the hoop. Write one possible equation to represent the

89. ## science

If all the nematocysts on a mature man-of-war were filled with poison, what is the total amount of poison (in milligrams) that they would contain? 1. less than one milligram 2. two milligrams 3. five milligrams 4. six milligrams 5. more than eight

90. ## algebra

Abigail buys a dress for \$12 & a backpack for \$10.50. She is also charged 9% sales tax on the dress only. Write an expression that represents total cost abigail had to pay

91. ## English

Hello. I'll be very grateful for some language help. Do you think it's correct to say: 1) "They negotiated about creating a coaltion." 2) "They expressed concern about increasing crimes." Thank you very much.

92. ## Math

Where are the brackets supposed to be in this equatin 20-8÷2+6 to give 1. 5 as the answer.

93. ## Math and science

How far apart are these two buildings?

94. ## Civics Presentation (Writeacher)

What do you think about my first two slides? SLIDE #1: WHAT IS THE LIBERTARIAN PARTY? The Libertarian Party is the only political organization which treats and respects you as an unique individual. As the Libertarian Party, we believe in liberty,

95. ## Geometry

maria is building a carrying case for a musical instrument. The case will have the shape of a triangular prism. She wants to know how much material will be needed to build it. The case will have the dimensions given in the diagram. What is the surface area

96. ## maths

A bell rings every 10 minutes and a buzzer sounds every 15 minutes they were both heard at 2nd clock When would they both be heard next?

97. ## English

Dear Ms.Sue, thank you for your answer. Will you please help me with one more question? Do you think it's possible to use such phrases as "for a long time / for a month" in the mid-position, for example: "They have been trying for a week to find a solution

98. ## Physics

A brass rod is two meter long at a certain temperature the brass rod is 2m long what is it length to a temperature raise of look if alpha of brass is 19*10-6 kelvin

99. ## mathss

a, b, c, d, e, f, and h are numbers such that a × b × c = 100, a × d × e = 0 and b × f × h = 0. Which of the following could be true?

100. ## math

the length of a rectangular garden is 4m more than its width determine the gardens width if the area is 117m^2

101. ## Algebra

Identify the domain and range of the relation {(-9,2), (-4,2), (3,2), (9,2)} thanks for your help. please show answer.

102. ## preparation

a ball of mass .1kg initially at rest is dropped from height of 1 meter.ball hits the ground and bounces off the ground.upon impact with the ground its velocity reduces by 20%.the height to which the ball will rise is?

103. ## Algebra

The function g(t) = 2t represents the number of guitar lessons, g(t), you can compete in t months. How many guitar lessons can you complete in 7 months? Provide your conclusion as a complete sentence. thanks for help

104. ## Maths

Given that sin theta=5/7 and theta is acute. Find without using the table value of cos theta

105. ## English

Dear Ms.Sue, I am very grateful for your explanation. Please have a look at one more sentence. "They had been trying for more than ten years to conceive a baby naturally but finally had to resort to in vitro fertilization". Is the word order OK? Do you

106. ## Math

The football team is on the 30-yd line and has 4 plays to make a rst down. To make a rst down, the team must advance the ball 10 yd. On the rst play, they lost 4 yd. On the second play, they gained 8 yd. On the third play, they lost 2 yd. How many more

107. ## maths

average third number is 12 if two number are 8 and 15 then the third number is?

108. ## Maths

If the exterior angle of a quadilateral are given is 60 degree, 130 degree, 82 degree. Find the interior angle

109. ## maths

average of three number is 12 if two number are 8 and 15 then the third number is ?

Determine the y intercept of the graph of y=5x^2 + 7x+ 11

The graph of a parabola passes through the points (3,8) and 5,8. The equation if the axis of symmetry of the graph of the quadratic function is: X=8 X=4 x=0 X=-4

112. ## Civics Presentation (Help!)

Will someone help me construct a layout for this project? It's due Thursday. On your power point, you should develop a presentation that identifies the party, tells us meaningful information about the party platform, and tries to convince us not only to

113. ## music

Meaning of Guzheng in music it's Chinese or Japanese we have been studying it so meaning of Guzheng thank u

114. ## history

In the context of criminal punishment, desert refers to:

115. ## Biology

If a man has cystic fibrosis and his wife is a carrier of the gene, what is the likehood of their offspring having the disease ? Use a punnet square to justify your answer

116. ## math

(25)^-1/3 Ã— 3âˆš16

117. ## English

1. He is absorbed in biology. 2. He is very interested in biology. 3. He is into biology. ----------------- Are they all the same in meaning?

118. ## English

1. She sat taking notes "on" everything that was said. 2. She sat taking notes "of" everything that was said. ------------- Which one is right? Can we use both 'on' and 'of'? which one is commonly used?

119. ## 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

120. ## English

1. I was upset with what he said. 2. I was upset about what he said. 3. I was angry with what he said. 4. I was angry about what he said. 5. I was angry at what he said. ------------- Are they all grammatical? Which prepositions do we have to use? Is

121. ## Algebra

Test scores of average 7th grade class are: 77,83,92,66,89,74,98,79,85,75,80,88,76,96,84,100,71,93,70,82 The mean is 82.9 and the standard deviaition is 9.7 1. What score is in the 80th percentile? 2. Your teacher tells you that your score beat 78% of the

122. ## U.S. History Question

Was Malcolm X the symbol of the black power movement and a supporter of the Nation of Islam?