1. Math

A saline solution is 20% salt. How many gallons of water must be added to dilute the mixture to 8 gals of a 15% saline solution? here is my method: using c1V1 = c2V2, (0.2)(V1) = (0.15)(8) V1 = 6 gals So, since 8 gals are required to dilute the saline

2. pre calc

Find the exact value of sin(x-y) if sinx=-3/5 in Quadrant III and cosy=5/13 in Quadrant I.

3. MATHS - URGENT

Write the expression in terms of sine only. 8(sin 2x − cos 2x)

4. physics

a body is moving with uniform acceleration of 10m/s2.if it starts from rest calculate its displacement after 5s

5. Math

1. An invoice is dated August 29 with terms of 4/15 EOM. What is the discount date? 2. What is the net date for the scenario in the previous question?

6. Social Studies help needed

1. Although (s)he was later forced into exile by Haiti's military, ________ became, in 1990, the first Haitian president to be elected democratically (1 point) Francois Duvalier Toussaint L'Ouverture Vanesa Alonso Jean-Bertrand Aristide 2. Haiti is the

7. help

a 2-mi cab ride costs \$4.25. a 7-mi cab ride costs \$8.50. which equation models the cost y of a cab ride that is x miles?

8. math

Use a graphing calculator to solve the equation 3 tan=(1)/(3)è=8 in the interval from 0 to 2pi. Round your answers to the nearest hundredth.

9. AP English Lit

Hi, I was wondering what kind of poem "Dream Variations" by Langston Hughes is? I've narrowed it down to blank verse or free verse but I'm not sure. Please help. Here is the poem: Dream Variations To fling my arms wide In some place of the sun, To whirl

10. Physics

Camera lenses are described in terms of their focal length. A 50.0 mm lens has a focal length of 50.0 mm (a) A camera with a 50 mm lens is focused on an object 4.0 m away. Locate the image. (b) A 980 mm lens is focused on an object 125 m away. Locate the

11. Psychology

A physiological support of hypnosis as a different state of consciousness is: A. rapid eye movement initiated when a person is hypnotized. B. a change in the electrical activity of the brain in hypnosis. C. the sense of time removed. D. reaction time slows

12. calculus

Find the volume of the solid that is obtained when the region under the curve y = 4 − x^2/6 is revolved around the y -axis between y = 0 and y = 4 .

13. physics

An object in static equilibrium has a coefficient of static friction as 0.110. If the normal force acting on the object is 95.0 newtons, what is the mass of the object?

14. Psychology

Monique cannot seem to sit still, talks rapidly, and never seems to get tired at the end of the day. Her friends suspect that she is taking: A. cocaine. B. Rohypnol. C. LSD. D. speed. im guessing it could be cocaine or LSD

15. Trigonometric Functions! (Ferris Wheel)

The Ferris wheel at a carnival has a diameter of 18m and descends to 2m above the ground at its lowest point. Assume that a rider enters a car at this point and rides the wheel for two revolutions My main problem is how to get the phase shift. (The answer

16. Algebra

x-14/x-1=4-2x/x-1

17. Physics

In a city grid, each block o the east-west streets is 180 meters long. Each block on the north-south streets is also 180 meters long. A walker walks 4 blocks north and then 3 blocks east. How much father did the walker travel than the actual distance

18. math

Each serving of fruit punch is 250 milliliters. How many servings of punch are there in 20 liters? Please answer and explain.

Find two mixed numbers so that the sum is 15 3/10 and the difference is 8 5/10

20. physics

Use the Biot Savart law to compute the magnetic field at the center of a metallic ring. the ring has a radius of 10^-6 m and is connected to two infinite wires. the current in the wires is 1 amp. the ring is lying in the [x,y,z= 0 ] plane. the first wire

21. Chemistry

How many grams of fluorine are required to react with 100g of NaBr in the following reaction: F2 + 2NaBr --> 2NaF + Br2 Also, does this show 1 F2 molecule or 2 F2 molecules and how will i write it with the conversion factors with units?

22. Public Speaking

I need help writing a speech out on the following topic:Why banning the use of cell phones while driving should be mandatory nationwide. tate the general purpose, specific purpose, and central idea clearly and in the appropriate form.4. Limit your main

23. english

we went to their Fifteith anniversary is 50th capitalized?

24. Math

The scores on a standardized test are normally distributed with the mean of 750 and standard deviation 70. Find the probability that a score is more than 890.

25. Physics

A rubber ball is attached to a paddle by a rubber band. The ball is initially moving away from the paddle with a speed of 4.5 m/s. After 0.30 s, the ball is moving toward the paddle with a speed of 2.0 m/s. What is the average acceleration of the ball

26. math

find the solution to the system of equations by using either graphing and substitution y = 6 - x and y = x - 2 (2,4) (-4,2) (4,2) no solutions I think this one is the third answer am I right?

27. Math

Mrs. Thomas bought 5 kg of flour. She used 1/5 of it to make muffins and 1/5 of the remainder to make cookies. How much flour did she have left?

28. physics

A Martian rover is moving up a hill sloped at 30.0° with the horizontal. If it has a constant velocity of 1.50 meters/second, calculate its vertical displacement after 21.0 seconds

29. math

Find the exact value of 1. tan 75 degrees 2. Cos 15 degrees 3. Sin 105 degrees

30. Science

How do I identify between Zn, Al, and Mg ions in solution?

31. physics

a body is moving with uniform acceleration of 10m/s2.if it starts from rest calculate its displacement after 5s

32. understanding angels and unit angels.

Cut a pie into equal slices. There are only 3 slices left. The angel measures for the 3 slices is 72 degrees.How many slices was the pie cut into?

33. biology urgent

Glucose is transported into a cell through a process of co-transport, where it is moved against its concentration gradient through a membrane channel. Moving any molecule against its concentration gradient requires energy, but these glucose channels do not

34. calculus

Find the area of the region between the parabola 4y = x^2 and the line 3x + 4 y = 4

35. math i don't get it

The lemonade recipe calls for 2 tablespoons or 1 ounce of food coloring for every gallon. How many cups of food coloring are there in 16 gallons of lemonade? Please explain this a lot so i can get this.

36. Chemistry

Water boiled contained 16. 2g of calcium hydrogen carbonate.Calculate the mass of CaCO3 formed?

37. Math (Algebra)

f(x)=x^4+ax^3+bx^2+cx+d and has real coefficients. If two of the roots are 4−i and 2+3i, what is the value of a+b+c+d?

38. physics

How am I supposed to answer this question on the lab write-up? I have the date, but I don't know the formula or process to use. Thanks. Organizing Data: Using your estimate of the threshold frequency from your first data table and your measured value of ft

39. Climograph

On one of my problems it says: What is the average temperature in January for each place? On one climograph, the average temperature is 40 and the other climograph is 50. So, do I just put the average temperature in January in each place is 40-50?

40. Social Studies

Why did immigrants and farmers settle in big cities at the end of the 19th century? My answer: Immigrants and farmers settle in large cities because, once there, even workers with few skills could usually find steady work.

An invoice is dated Aug 29 with terms of 4/15 E.O.M. What is the discount date and net date ?

Fortune tellers use crystal balls to see the future. A fortune teller has a crystal ball with an index of refraction of 1.5 and diameter of 0.2 m. You sit on one side of the ball and the fortune teller sits on the other. She holds up a small red jewel on

A 15 kg, 1 m wide door which has frictionless hinges is closed but unlocked. A 400 g ball hits the exact middle of the door at a velocity of 35 m/s and bounces off elastically, thereby causing the door to slowly swing open. How long in seconds does it take

44. math

for what value of n will 3n + 4 = 6n - 11 be true?

45. Math

does anyone know how to find the answer to the following questions: An invoice is dated Aug 29 with terms of 4/15 E.O.M. What is the discount date and the net date ?

46. chemistry

explain why a balloon with 1.00 mol xe gas in it has the same volume as balloon with 1.00 mol he gas in it

47. life orientation

provide recommendations on how to address substance abuse

48. lincoln highschool

What should you do before you begin reading? A. Review the introduction and conclusion. B. Ask yourself questions about what lies ahead. C. Study graphic aids. D. Both A & B.

49. Math

I don't know the answer . That's why I'm looking for someone to help me answer my question which is : An invoice is dated Aug 29 with terms of 4/15 E.O.M. What is the discount date and the net date ?

in 10-15 lines critically discuss 5 ways in which global warming impacts on the community

51. english

ey ned ur help!some one can summary a noveli .nothing but the truth.

52. math

if you have 63 diffrent combinations how many diffrent combinations can you make with 1 crust , and 3 diffrent toppings , and 1 type of cheese ?

53. pride

you deposit 7900 in a money market account that pays a intrest rate of 4.3% the intrest is compounded quarterly how much money will you have after 3 years

54. Literature

In order to get an idea of significant subject areas in a chapter, it is best to read the: A. subheads. B. graphics. C. captions. D. table of contents.

55. macroeconomics

The basis for international trade is that: a. a nation can import a particular good at a lower cost than if it were produced domestically. b. we stand to gain if we can sell more to other nations than they buy fro us c. there are winners and losers d. it

56. Math

Fantasia Florist Shop purchases an order of imported roses with a list price of \$2,375 less trade discounts of 15/20/20. What is the dollar amount of the trade discount?

57. Math

Using your answer to the question above, what is the net dollar amount of that rose order?

58. Math

City Cellular purchased \$28,900 in cell phones on April 25. The terms of sale were 4/20, 3/30, n/60. Freight terms were F.O.B. destination. Returned goods amounted to \$650. What is the net amount due if City Cellular sends the manufacturer a partial

59. Math

If the manufacturer from the question above charges a 4½% late fee, how much would City Cellular owe if it did not pay the balance by the net date?

60. Math

The scooter does 40km to a litre of petrol. If I use 7.25l how far did the scooter travel

61. Math

can someone please help me with the answer to this question? What payment should be made on the invoice in the amount of \$ 3,400.00 dated Aug 7 if the terms of sale are 3/15, 2/30,n/45 and the bill is paid Aug 19?

62. Math

In Example 2, find the percent of the total and the number of degrees in each sector for mountains, theme parks, relatives, and other. Find the median of the data set in Example 3. In which category does it fall? Find the average unemployment rate for

63. Math

Please help. 51. Solve: 125=(x3)/0.3^-3 a.7 b.14 c.15 d.9 53. 49x-2 = 7Ö 7 a.-5/4 b.5/4 c.11/4 d.-11/4 60. Simplify: 2log^3 6 - log^3 4 a.3 b.6 c.4 d.2 61. Solve the equation: logb (x^2 + 7) = 2/3logb 64 a.9 b.3 c. √23 d. ±3 62. Solve: (The fifth root

64. PRONOUNS? ENGLISH HELP

Which pronoun correctly completes the sentence? Everyone in the girls’ choir has ___ own concert folder. A. she B. her C. their I'm thinking it is B, since it is the GIRLS' choir.

65. Civil War

The Fugitive Slave Law was criticized because it

66. final exam

a study shown that 20% of all college textbooks cost at least \$70.it is known that the standard deviation of the prices of all college textbook is \$9.50.assuming that prices of all college textbooks follow a normal distribution, find the mean price of all

67. Algebra

80. Determine the sum for the arithmetic series: n = 37, t1 = 23, t37 = 203 a. 5631 b. 8362 c. 6742 d. 4181 81. Determine the sum for the arithmetic series: n = 100, t1 = 17, t100 = 215 a. 9900 b. 3350 c. 11,600 d. 990 82. Determine the sum for the

68. Civil War

What book caused many people in the north to look at slavery as a moral issue?

69. algebra 1

A local citizen wants to fence a rectangular community garden. The lengthof the garden should be at least 110ft., and the distance around should be no more than 380 ft. Write a system of inequalities that models the possible demensiopns of the garden.

70. math

Find the area of the other figure to the nearest whole number. The area of the smaller trapezoid is 771 m2.

71. algebra

If x dollars is deposited every four weeks (13 times a year) into an account paying an annual interest rate r, expressed in decimal form, then the amount An in the account after n years can be approximated by the formula .If \$45 is deposited every four

72. speech (Writeacher)

Writeacher, in response I am doing my outline for an informative speech and I decided to choose the topic Why me? Dying to live or living to die. Everybody at some point will encounter some kind of diagnosis whether it be you, your spouse, a loved one and

73. Chemistry

Does NaHCO3 form an acidic aqueous solution?

74. science

How is molecular formula and emperial formula related

75. math

what is the rule? x 5 7 9 11 y 1 1.6 1.8 2.2

76. Math

1. Ned’s Sheds purchases building materials from Timbertown Lumber for \$3,700 with terms of 4/15, n/30. The invoice is dated October 17. Ned’s decides to send in a \$2,000 partial payment. By what date must the partial payment be sent to take advantage

77. Easy Chemistry

is 2 molecules of fluorine the same as 2 fluorine molecules? if so then how/why

78. Math

1. What payment should be made on an invoice in the amount of \$3,400 dated August 7 if the terms of sale are 3/15, 2/30, n/45 and the bill is paid on August 19? 2. What payment should be made on the invoice from the previous question if it is paid on

79. Algebra

V=xyz xy+xz+yz-a=0 x>0 y>0 z>0 find the local minima and maxima for this function

80. Math

1. What payment should be made on the invoice from the previous question if it is paid on September 3? 2. If the manufacturer from the question above charges a 4½% late fee, how much would City Cellular owe if it did not pay the balance by the net date?

81. Calculus

We're learning disks, shells, and cylinders in school but we have a substitute and I've been trying to teach this to myself. Can you check them please? =) Thank you! 1) Find the volume of the solid formed when the region bounded by curves y=x^3 + 1, x= 1,

107. Evaluate: logx 16 = -2 a. 0.25 b. 4 c. -4 d. -0.25 108. Evaluate: e2 ln 3 a. 6 b. 9 c. 12 d. 18

83. economics

1) Recent trends toward trade restrictions have been to a) lower only those trade barriers related to technology. b)shield a country's automobile industries. c)increase trade barriers. d) decrease trade barriers

84. Algebra1

3. Jackson bought a car for \$11,000.00. After 2 years, the value of the car is \$7,860.00. If the value of the car depreciated linearly, how much did the car depreciate each year?

85. Information Literacy

11. Which of the following sets of Library of Congress call numbers is in the correct order? A. E88 G62 L166 1995, E88 G62 L45, E88 G62 D225, E88 G2512 S57 1998 B. E88 G2512 S57 1998, E88 G62 D225, E88 G62 L166 1995, E88 G62 L45 C. E88 G2512 S57 1998, E88

86. geometry

A 45 degree arc of circle D has the same length as a 30 degree arc of circle E. what is the ratio of the radius of circle D to the radius of circle E?

87. Algebra

Use the zero product property to solve the equation: -3n(2n-5)=0

88. Science Help

mass = 4.5 kg Compare and contrast the mass and weight of this bowling ball on Earth and the moon.

89. life orientation

identify one environmental or human factor that cause ill health or accidents or disaster within your community or any other community within south africa

90. Maths

a, b, c, A and C are real numbers that satisfy the equation (ax^2+bx+c)^2=Ax^4+16x^3+28x^2+24x+C How many possible ordered triples of (a,b,c) are there?

91. Geometry

Find the center and radius of the circle with equation (x+10)^2+(y-7)^2=36

92. Math

Writing to Explain Describe how to use a ruler to measure to the nearest inch.

93. grammar

In the following sentence identify the function of the infinitive (phrase). Is it too expensive to travel to Europe?

94. Chemistry

Say you have a question asking to rank the oxidizing strength of several different metals. When you look at the reduction table to determine the strength, there are metals with different oxidation states. For example: Fe3+ + 3e- => Fe ; Eo = -.04 Fe2+ +

Let S={1,2,3,…11} and T1,T2…,TN be distinct subsets of S such that |Ti∩Tj|≤2 for all values i≠j. What is the maximum possible value of N? (The empty set is a subset of every set.)

96. Health Accounting and Bills

I am manager of a variable hospital department and I must explain to the vice president why the salaries are higher, and the supplies are lower than the budget called for

97. Law

1. The decision whether someone qualifies as an expert witness for the defense is made by the: A. defense. B. prosecution. C. judge. D. court clerk. is it C

98. maths

How many functions f from the reals to the reals are there, such that f(f(x))=x^2−2? Details and assumptions f need not be a polynomial. f need not even be continuous.

99. Pseudocode Format

Need help writing this into Pseudocode Format: Robert has a van rental company, and he wants a program that determines the total cost of renting a van from him. His customers will pay a base fee (currently set at \$50), plus a charge per mile (currently

100. Chemistry

Calculate the grammes of oxygen which would involved on heating 5g of potassium trioxochlorate(v)

101. Chemistry

Calculate the grammes of oxygen which would involved on heating 5g of potassium trioxochlorate(v)

102. Pseudocode Format

Need help writing this using pseudocode format: Carly gets paid annually, and she would like a program that will figure out the amount of money she will be receiving each pay period. To make this simpler, we are not worried about any deductions.

103. MATH hard problem...HELLPPPPPP

Let S={1,2,3,…11} and T1,T2…,TN be distinct subsets of S such that |Ti∩Tj|≤2 for all values i≠j. What is the maximum possible value of N? clue: The empty set is a subset of every set. Thanks

104. Accounting

The Harding Co. in its first year earned \$39,000 in revenues and received \$33,000 cash from customers. They incurred expenses \$22,000, but had not paid \$2,250 of them at year-end. Harden also prepaid \$3,750 cash for expenses to be incurred in the next

105. HELP pyhsic please (critical density)

what is the critical density in # atoms of hydrogen per cubic meter?

106. math

turn standard form into scientific notation: 1. 12457.686 m 2. 0.000065423 g 3. 128.90 g 4. 0.0000007532 m turn scientific notation back to standard form: 1. 1.37 x 10^4m 2. 2.875 x 10^2g 3. 8.755 x 10^-5g 4. 7.005 x 10^-3m

107. science

Based on your knowledge of the garbage assemblage, what can you learn about the person(s) who created it and how might this be used to draw conclusions about their lives (e.g., diet, age, socioeconomic status, gender etc.)? It can be any garbage

Shauna baked bread rolls to sell at a school fair. 2/5 of the rolls were chocolate rolls, 1/3 were raisin rolls, 1/4 of the remainder were strawberry rolls, and the rest were vanilla rolls. What fraction of the rolls were vanilla rolls?

109. Math (Combinatorics)

Six boxes labeled 1,2,…,6 are arranged in a line. Seven identical balls are to be placed into the boxes such that for any 1 ≤ k ≤ 6, there are at least k total balls amongst boxes 1,2,…k. How many different placements of the balls into the boxes

Determine the correct formula for the measures of all angles coterminal with the angle: 140° a. 140° + (360° + n) b. 140° + n(360°) c. 360° + n(180°) d. 360° + (180° + n)

111. Physics

A 15 kg, 1m wide door which has frictionless hinges is closed but unlocked. A 400 g ball hits the exact middle of the door at a velocity of 35 m/s and bounces off elastically, thereby causing the door to slowly swing open. How long in seconds does it take

112. Math (Algebra)

A number is called algebraic if there is a polynomial with rational coefficients for which the number is a root. For example,√2 is algebraic because it is a root of the polynomial x^2−2. The number √2+√3+√5 is also algebraic because it is a root

113. Help In Math!

In triangle ABC, a = 5, b = 9, and c = 6. Find angle A, angle B, and angle C. a. 38.9°, 109.5°, 331.6° b.31.6°, 109.5°, 38.9° c. 109.5°, 31.6°, 38.9° d. 331.6°, 38.9°, 109.5°

114. english

what are some example of how the tv parlor in fahrenheit 451 is harmful

115. Math (Probability)

Bret and Shawn are playing a game where each turn the players roll a 20-sided die fair and then add the number they get to their score. The winner is the player with the highest score at the end of the game (there may be a tie). Before the last turn, Shawn

116. HELP.

Choose a formula for the nth term of the sequence: a2 , a4 , a6 , ... 2 4 8 a^2n 2^n a^2n 2n a^2n 2+n 2^n a

117. PHYSICE

A uniform beam of length L whose mass is m, rest with its ends on two digital scales ( Figure 13.2). A block whose mass is M rests on the beam, its center is one-fourth away from the beam's left end. What do the scales read ?

118. physics

(c) A ladder with length L and mass m rests against a wall. Its upper end is a distance h above the ground (Figure 13.3). The center of gravity of the ladder is one-third of the way up the ladder. A fire fighter with mass M climbs halfway up the ladder.

119. chemistry

how many moles of nh3 are produced from 16 grams of n2 ?

120. speech

Please help me. I need to write an informative speech. My husband has been sick for along time and needs a lung transplant (He is 52 and never smoked!) Any way I want to right a speech on how any one can over come a life crisis. It's just hard to think of

121. Help, Math.

Solve: 3e2x + 2 = 50 a. ln 8 b. ln 0.25 c. ln 14 d. 0.5ln 16 --------- Solve: 1 = 7 ex a. ln 1/7 b. ln 1/7 c. ln 7 d. ln 7 ------------ Solve: e3x = 8 a. ln 5 b. 3 ln 8 c. ln 8 3 d. ln 3 8 ---------- ln 1 √ e a. -√e b. -1 2 c. 1 e d. 1 2

122. Precal

wa

Discribe the lifestyle disease/behaviour.Mention 5 factors that contribute to the disease/behaviour

124. So confusing! Help Math.

49x-2 = 7Ö 7 a. -5/4 b.5/4 c. 11/4 d. -11/4

125. math

Dave walked from point A to point B due North East for a distance of 20m. He immediately changed direction and walked 50m from B to C on a bearing of 110 degrees. i. Calculate the distance AC ii. Find the bearing of C from A

126. math

Dave walked from point A to point B due North East for a distance of 20m. He immediately changed direction and walked 50m from B to C on a bearing of 110 degrees. i. Calculate the distance AC ii. Find the bearing of C from A

127. math

Two pieces of wire are stretched from the top M, of a vertical pole to the points L and N on the horizontal ground, The angle of depression of L from M is 65 degrees. N is on the opposite side of the pole (from L) at an angle of depression of 72 degrees

solve 125=(x^3)/ 1/3 ^-3 a. 7 b. 14 c. 15 d. 9

129. tourism

identify one environmental or human factor that causes ill health

130. MAThs

Six children are standing along the x-axis at points (0,0), (17,0), (40,0), (85,0), (173,0), (440,0). The children decide to meet at some point along the x-axis. What is the minimum total distance the children must walk in order to meet?

131. MATHS

Let N be the number that consists of 61 consecutive 3's. Let M be the number that consists of 62 consecutive 6's. What is the digit sum of N×M? Details and assumptions The digit sum of a number is the sum of all its digits. E.g. the digit sum of N is

132. function table

input/output, 1,8 2,14 3,?

133. spanish

how do I change the position of a reflective pronouns so that the clause keeps its senses.? Example: Ellos vienen a despedirse esta noche.

53.) 49x-2 = 7Ö 7 a. -5/4 b.5/4 c. 11/4 d. -11/4 79.) 10 E 3n-2 n=4 a. 14+17+20+...+32 b. 28+31+34+...+43 c. 10+13+16+...+28 d. 9+14+17+...+30 66. ln 1 √e a. -√e b. -1/2 c. 1/e d. 1/2 67. Solve: e3x = 8 a. ln 5 b. 3 ln 8 c. ln 8 3 d. ln 3 8

135. Managerial Economics

Suppose that Neptune Music has the copyright to the latest CD of the heavy Iron Band. The market demand curve for the CD is Q=800-100p, where Q represents quantity demanded in thousands and p represents the price in dollars. Production requires a fixed

136. Math

Nora had 20% fewer pictures than Maria. After Nora gave 12 pictures to Maria, she had half as many pictures as Maria. How many pictures did Nora have at first?

137. STEVE HELP MATH

53.) 49x-2 = 7Ö 7 a. -5/4 b.5/4 c. 11/4 d. -11/4 79.) 10 E 3n-2 n=4 a. 14+17+20+...+32 b. 28+31+34+...+43 c. 10+13+16+...+28 d. 9+14+17+...+30 66. ln 1 √e a. -√e b. -1/2 c. 1/e d. 1/2 67. Solve: e3x = 8 a. ln 5 b. 3 ln 8 c. ln 8 3 d. ln 3 8

138. Science

Identify and describe the type of radiation emitted during the radioactive decay of the radioisotope xenon 135

139. algebra

Chris has \$100 in his savings account and he adds \$20 a month to the account. The total amount can be represented by the linear function T = 20x + 100. His goal is to have a total of \$300 in four more months. What should he change in the function to reach

140. Calculus

We're learning disks, shells, and cylinders in school but we have a substitute and I've been trying to teach this to myself. Can you check them please? =) Thank you! 1) Find the volume of the solid formed when the region bounded by curves y=x^3 + 1, x= 1,

141. algebra

The question I have is to solve the problem. A model rocket is launched from the ground with an initial speed of 50 feet per second. The equation that models its height, h feet, off the ground t seconds after it was fired is h=-16ft^2+50t a)How high is the

142. physics

An automobile and train move together along parallel paths at 28.8 m/s. The automobile then undergoes a uniform acceleration of −4 m/s 2 because of a red light and comes to rest. It remains at rest for 63.8 s, then accelerates back to a speed of 28.8 m/s

143. One S.S. Question

3. Which of the following does not describe the city of San Juan? (1 point) a combination of old Spanish style buildings and modern skyscrapers luxurious waterfront hotels that draw many tourists steep mountains and rolling hills, scattered with small

144. science

a body moving with a uniform acceleration travels distance of 24m and 64m during the first two equal consecutive interval of time,each of duration 4s.determine the initial velocity and acceleration of the moving body

145. chemistry

calculate the number of milliliters of 0.10 M cupric sulfate solution that must be diluted to prepare 10mL of a 0.015M cupric sulfate solution.

146. English

I had to read "Son" by John Updike but i don't understand the summary. Could you explain the plot summary to me? Such as initiating event, Rising action, climax, falling action, resolution? and setting? to read the story, go to google and search 'son by

147. Science

Did Apollo astronauts contributed to our knowledge of the moon's structure?

148. giving up

i'm depressed that no-one has answered my science question so i'm giving up and i don't care if i fail my science because it will be all googles fault the only thing i know about the xenon 135 is that it's a tennis/squash racket and i needed the element

149. algebra

find the pair of parallel lines 1)-12y+15x=4 2)4y=-5x-4 3)15x=12y=-4

150. math

which of the following equations has a graph that is parallel to the graph of 4x-2y=7? 1)4x+2y=2 2)-2y=4x+2 3)7-4x=2y 4)2y=4x+7 5)-4x-2y=-7

151. math

find the pair own parallel lines 1)-12y+15x=-4 2)4y=-5x-4 3)15+12y=-4

152. Math (Algebra)

f(x) is a cubic polynomial that satisfies f(1)=f(2)=f(3)=4 and f(0)=0. What is the value of f(7)?

153. math

Chad buys peanuts in 2 pound bags. He repackages them into bags that hold 5/6 pound of peanuts. How many 2 pound bags of peanuts should Chad buy so that he can fill the 5/6 pound bags without having any peanuts left over? What are the steps to find the

154. physics

A package weighing 75 N is sitting on a coffee table. The package is cubic with edges of 10 cm. How much pressure does the package exert on the table?

155. chemistry

CH3BR+_->_+C2H6

156. algebra

which of the following lines is not parallel y=2x=1 1)4x-2y=-4 2)2y-x=-4 3)y-2x=6 4)2x-y=-4

157. history

What factor is primarily responsible for the sharp contrasts between Old World and New World civilizations?

158. Math (Algebra)

One root of the quadratic equation x^2 − 2x + m = 0 is 9. If the other root is n, what is n−m?

159. Algebra

f(x) is a function differentiable at x=1 and fŒ(1)=1/8. What is the value of f(x)-f(1) f'(x) denotes the derivative of f(x)

160. math

City Cellular purchased \$28,900 in cell phones on April 25. The terms of sale were 4/20, 3/30, n/60. Freight terms were F.O.B. destination. Returned goods amounted to \$650. What is the net amount due if City Cellular sends the manufacturer a partial

161. math

which of the following lines is not parallel to y=2x+1 1)4x-2y=-4 2)2y-x=4 3)y-2x=6 4)2x-y=4

162. Math 104

Students, please view the "Submit a Clickable Rubric Assignment" in the Student Center. Instructors, training on how to grade is within the Instructor Center. Assignment 2: Financial Project Due Week 7 and worth 55 points Five (5) years ago, you bought a

163. Chemistry

Do the properties of a newly formed chemical compound tend to differ from or be the same as the properties of the individual elements that compose it?

Find two mixed numbers so that the sum is 8 4/8 and the difference is 2 2/8

Hey! 2y-8y=-4 Do I subtract or do I add?!? Something like that right?!?

166. science

Based on your knowledge of the garbage assemblage, what can you learn about the person(s) who created it and how might this be used to draw conclusions about their lives (e.g., diet, age, socioeconomic status, gender etc.)? Here are some things to think

167. physics

A man leaves his house and begins to walk for 2 hours. After walking in a straight line for two hours he is 10 miles from home. Calculate the man's average speed on terms of miles per hour.

168. physics

If a metal wire carries a current of 79 . 0 mA, how long does it take for 7.90 × 10 20 electrons to pass a given cross-sectional area anywhere along the wire? The fundamental charge is 1 . 602 × 10 − 19 C. Answer in units of s

169. math

the angle of depresssion from the top of a building to a point on the ground is 59 degrees. how far is the point on the ground from the top of the building if the building is 87 meters high?

170. math

To make the punch, the staff adds 250 milliliters of fruit juice for every 5 liters of punch. How many liters of fruit juice would be added to 20 liters of punch? Please answer and explain.

171. Trigonometry

Γ is the circumcircle of triangle ABC with radius 12√2. If 9cos(∠B+∠C)cos∠A=−1, what is the value of BC?

172. Trigonometry

The quadratic equation x^2−9x+10=0 has roots tanα and tanβ, where 0∘

173. Physics

A 15 kg, 1m wide door which has frictionless hinges is closed but unlocked. A 400 g ball hits the exact middle of the door at a velocity of 35 m/s and bounces off elastically, thereby causing the door to slowly swing open. How long in seconds does it take

174. Jiska Homework Help: Live Tutors

On the top right of the page, it has a link that says "Chat With Live Tutors", are the tutors who work on this site or other places?