# Questions Asked onSeptember 29, 2015

1. ## Calculus

The equation of motion of a particle is s = t3 − 12t, where s is in meters and t is in seconds. For the velocity function, I got v(t)=3t^2-12 and for acceleration, a(t)=6t. The final question is: Find the acceleration when the velocity is 0. How do I do

2. ## Chemistry

Calculate the energy in joules of microwave radiation of wavelength 12.7 centimeters. (E = hν, h = 6.63 × 10-34 J.sec; speed of light = wavelength × ν, speed of light = 3.0 × 108 meters/sec.)

3. ## algebra

The weight of a rock sample is measured to be 2.5 pounds. What is the percent of error in the measurement?

4. ## Chemistry

Hello! I really need help with this. Name the following salts according to the old -ic, -ous system and the stock system. a. CrS b. Cr2O3 c. CrI3 X 6H20 d. CuCl e. CuI2 f. CuBr2 x 4H20 g. HgCl2 h. Hg2Cl2 i. Fe (OH)3 I am totally lost. I don't know how to

5. ## calc 2

A loaf of bread is removed from an oven at 350 degrees F and cooled in a room whose temperature is 70 degrees F. If the bread cools to 210 degrees F in 20 minutes, how much longer will it take the bread to cool to 155 degrees F. Round to the nearest

6. ## ap chemistry

home / study / questions and answers / science / chemistry / balance the following example of a heterogeneous ... Your question has been answered! Rate it below. Let us know if you got a helpful answer. . Question Balance the following example of a

7. ## Chemistry

hydrocarbon mixture 60% c3h8, 40% CxHy 10 g of mixture was burned with O2 excess to give 29.02 g co2 and 8.8 g h2o. what is CxHy?

8. ## Algebra

The path of a diver is given by y=-4/9 x^2 + 24/9x +12 where y is the height (in feet) and x is the horizontal distance from the end of the diving board (in feet). What is the maximum height of the diver?

9. ## Math

A scuba diver is 31 feet below the surface of water. She dives down an additional 16 feet. How far would she have to rise to reach the surface of water? (Hint) think absolute value because distance can not be negative.

10. ## French

what word is E L A É S L unscrambled.

11. ## science

a satellite in force free space sweeps stationary interplanetary dust at a rate of dM/dt=alpha v, where M is mass and v is speed of satellite and alpha is a constant. the tangential acceleration of satellite

12. ## Chemistry

three liquids have densities of 1.15g/m, 0.79g/ml, and 0.95 g/ml. When the liquids, which do not mix, are poured into a graduated cylinder, the liquid at the top is the one with a density, in g/ml, of ?

13. ## Chem

Name the following binary compounds consisting of two nonmetals or a metalloid and a nonmetal. 1. AsH3= arsine 2. AsF5= arsenic pentafluoride 3. HCL= Hydrogen chloride is this right?

14. ## math

Can someone show me how to do these problems, please? I really need help... I just have to answer the questions and show how it was solved 1. Carlos spends at least 45 minutes each day on the Internet. Which inequality could be used to describe the amount

15. ## writing skills

What else can they do when repairing walls separate from beans or restoring socket carry no electricity what correction should be made to this sentence

16. ## Math

a shop has one pound bags of peanuts for \$2.00 and three-pound bags of peanuts for \$5.50 if you buy 5 bags and spend \$17, how many of each size bad did you buy?

17. ## GRE prep

A sphere with diameter 1 unit is enclosed in a cube of side 1 unit each. Find the unoccupied volume remaining inside the cube.

18. ## math

bryan is setting chairs in rows for a graduation ceremony. He has 50 black chairs and 60 white chairs. Each row will have the same number of chairs, and each row will have the same color chair. What is the greatest number of chairs that he can fit in each

19. ## geometry

The endpoints of the diameter of a circle are at (1,2) and (7,-6). What is the circumference of the circle to the nearest tenth of a unit? a. 15.7units b. 31.4 units c. 62.8 units d. 78.5 units

20. ## social stuides

The leaders of the Virginia Company recruited more settlers and reorganized the colony. They allowed the new settlers to own land. Those settlers began to grow tobacco, a crop they learned about from the Indians. By 1612, Virginians were shipping tobacco

21. ## Physics

A bowling ball traveling with constant speed hits the pins at the end of a bowling lane 16.5 m long. The bowler hears the sound of the ball hitting the pins 2.44 s after the ball is released from his hands. What is the speed of the ball? The speed of sound

22. ## Geography (Ms.Sue ) Help

The concept of the _______ of distance is illustrated by the fact that as cost increases with distance, interactions between people decrease. A. friction B. relativity C. flexibility D. erosion I am thinking either A or D. But can't decide.

23. ## Technolgy

A _________ is a way for students to keep track of information during research Credible Website Search log** Boolean operator online database

24. ## Chemistry

What is the mass in grams of Br in 8.53 moles of FeBr5?

25. ## Physics Projectile Motion

An archer shoots an arrow at a 72.0 m distant target, the bull's-eye of which is at same height as the release height of the arrow. (a) At what angle must the arrow be released to hit the bull's-eye if its initial speed is 36.0 m/s? (Although neglected

26. ## Chemistry

Suppose density of 100.0 mL of some liquid was found to be 0.789 g/mL. What would be the specific gravity of 20.0 mL of this liquid?

27. ## english

the waitress in our local diner are _ to be funny and not always polite if a customer says i'm ready to order now he may get a _ responce such as im ready to retire but you don't hear me making a big deal about it

28. ## Math

One table at a bake sale has 75 cookies. Another table has 60 cupcakes. Which table allows for more rectangular arrangements when all the cookies and cupcakes are displayed? Explain

29. ## chemistry

Hydrogen iodide decomposes according to the reaction 2HI(g)H2(g) + I2(g) A sealed 1.50 L container initially holds .00623 moles of H2, .00414 moles of I2, and .0244 moles of HI at 703K. When equilibrium constant is reached, the concentration of H2(g) is

30. ## chemsitry

home / study / questions and answers / science / chemistry / make sure to answer both parts: 1)balance the following ... Your question has been posted. We'll notify you when a Chegg Expert has answered. Post another question. . Question Edit question make

31. ## Chem

Why should a dilute NaOH solution be used for the standardization of NaOH in the analysis of Aspirin using back titration?

32. ## math

After traveling for 6 hours, they are 780 miles apart. If Kyle drives 10 miles per hour faster than Joel, how fast was Joel traveling?

33. ## Math

Will runs 6 laps before Megan joins him at the track. They then run together at the same pace. Represent the relationship between the number of laps Will runs + Megan runs.

34. ## thermo

an open container with 10L of water at 1 bar and 20 C is used for cooling electronic parts.Each electronic part has a mass of 01.kg and an average specific heat of 0.14 kJ/kg-K. The electronic parts are initially at 300 degrees Celcius and are required to

35. ## Technolgy

Which boolean operator omits information for search parameters? AND OR WITHOUT NOT***

36. ## physics

A rectangular coil of dimensions 20cm by 15cm lies with its plane parallel to a magnetic field of 0.5W/m^2. The coil, carrying a current of 10A experiences a torque of 4.5Nm in the field. How many loops has the coil?

37. ## Calculus 1

The curve with the equation y^2=5x^4-x^2 is called a kampyle of Eudoxus. Find an equation of the tangent line to this curve at the point (-1,2).

38. ## Science

Hydrogen gas(H2) and chlorine gas (CL2) react to form hydrocloric acid (HCL). What is the correct balanced chemical equation for this reaction? A-2H2+2CL2->HCL B-H2+CL2->2HCL C-2H2+CL2->2HCL D-H2+CL2->HCL I think C Pls Help me

39. ## language

is the noun in this sentence correct? the wealthier peoples class was called the gentry

40. ## mechnics

the two forces act an angle 120.the bigger the force is 40 and resultant is perpendicular to the smaller one find the smaller force

41. ## Physics

Vector A and vector B both lie in the same xy plane . Is it possible for them to have same magnitude but different components and same components but different magnitude ?

42. ## social studies

which one of the following conclusions is supported by the results of these studies? 1)characteristics other than one's name have no effect on academic achievement. 2)Unusual names do not determine intellectual development. 3)Ethnic group membership is the

43. ## Physics

I have a question about a vector addition problem using the polygon method. Vector 1 has a magnitude of .1 and theta of 30 degrees. Vector 2 has a magnitude of .2 and a theta of 90 degrees. Vector 3 has a magnitude of .3 and a theta of 225 degrees. I'm

44. ## Math

f(x) = log2(x – 3) + 1. How do I find the Domain and Range?

45. ## chem

If 20g of CaCo3is treated with 20gm of HCl how many grams of CO2 can be generated CaCO3+2HCl gives CaCl+H2O+CO2

46. ## Chemistry

For the following reaction, 9.91 grams of sulfur are allowed to react with 20.8 grams of carbon monoxide . sulfur(s) + carbon monoxide(g) sulfur dioxide(g) + carbon(s) is the maximum amount of sulfur dioxide that can be formed? What is the FORMULA for the

47. ## fluid mechanics

a block has a mass of 400kg in air when submerged in seawater it weighs 2943N. what is the specific gravity of the block?

48. ## McDonald 26

I am greater then 4 tens and less than 5 tens

49. ## Language Arts

What does the aunt in The Story Teller find improper about the bachelor's story? A. It makes fun of Bertha's goodness B. It has too many fantasy elements C. It unrealistically suggests that virtue is always rewarded D. The bachelor tells it without

At a certain marathon race, the winner comes in at a time of 130 minutes. Second place comes in at a time of 135 minutes, and third place comes in at 140 minutes. Starting with third place, contestants come in at regular intervals all the way up to the

51. ## math

how do i change a fraction to a mixed number

52. ## Chemistry

30g of TiCl4 is mixed with 18g of water to from TiO2 and HCl. Write the chemical reaction and balance it.How much TiO2 is produced. my answer: TiCl4+2H2O= TiO2+4HCl

53. ## chemistery

at 20 degree Celsius, 65.2 g of KBr will dissolve in 100 g of water. what is the mass percent of KBr in water ?

54. ## Math

How to simplify the expression using De Moivre's theorem? The question is cos 2x + i sin 2x / cos 3x + i sin 3x.

55. ## Physics Projectile Motion

A ball is kicked with an initial velocity of 21 m/s in the horizontal direction and 16 m/s in the vertical direction. (Assume the ball is kicked from the ground.) (a) At what speed does the ball hit the ground? (b) For how long does the ball remain in the

At a certain marathon race, the winner comes in at a time of 130 minutes. Second place comes in at a time of 135 minutes, and third place comes in at 140 minutes. Starting with third place, contestants come in at regular intervals all the way up to the

57. ## Statistics (Central Limit Theorem)

Does the central limit theorem apply to non-normally distributed variables? Why?

58. ## Mv convent

The height of a room is 6m.A person of height 1.5m is standing at the centre of a room.A plane mirror is to be fixed on front wall the minimum vertical lenght of the mirror so that the person can see complete image of his own and the wall behind him?

59. ## chem

Calculate the number of kJ released for the reaction shown below, if you begin with 52 grams of fluorine (F2), and the ΔH = -542 kJ. H2(g) + F2(g) → 2 HF(g)

60. ## Math

A farmer had 75 apples. Every day, the farmer kept a fraction of the apples. gave the rest away , and then ate one. The fractions he decided to keep are listed below:1/2 1/4 3/4 3/5 5/6 11/15 In which order did he use the fractions so he was left with just

61. ## physics

water flows in river 0.5km wide with speed 6km/hr. A boat can travel with speed 10km/hr in still water. In what direction should boat sail to reach opposite bank?

62. ## Algebra

A runner starts at the beginning of a cross country course running at a constant rate of 6 miles per hour. Five minutes later a second runner begins at the same point,

63. ## algebra

you are building a rock wall for a flower bed along your 38-foot long driveway. You Want the wall to be one-half of the length of the driveway with an absolute deviation of at most 3 feet. write and solve an absolute value inequality that represents the

64. ## Physics

A car travels due east with a speed of 40.0 km/h. Raindrops are falling at a constant speed vertically with respect to the Earth. The traces of the rain on the side windows of the car make an angle of 54.0° with the vertical. Find the velocity of the rain

65. ## Math

For nth root functions, I know that if "n" is even, then the domain must be equal or greater than zero. If "n" is odd, then domain will be all set of real numbers. But how do I determine the range of an n-th root function?

66. ## LA

• How are a dictionary and thesaurus similar? How are they different? Cite evidence from the sample entries on p. 120 to support your answer. • How can use of a dictionary and thesaurus be complementary?

67. ## Physics

A parachutist bails out of airplane and suddenly parachute did not open but after falling 80 m he opens his parachute due to which retardation of 4m/s . He reaches on the ground with velocity 4m/s . What was the height of airplane at the time of bail and

68. ## math

Estimate 20.751+2.55+17.4

69. ## Math

simplify (y^4)(y^3) y^1 y^7 y^12 Y^43

70. ## Geometry

This is the question - Two angles with measures 5x - 5 and 11x - 7 are supplementary. Find the Value of x and the measure of each angle. Thank you so much for your help.

71. ## math

how many posts are needed to build a fence if the area is 32 and perimeter is 24 and the dimensions are 8x4

72. ## Case Study

Darlene's parents believe that her extra weight is baby fat and aren't concerned about it. What are some of the physical and social consequences of obesity that darlene may experience? What does these question mean?

73. ## Math (Help)!

I'm lost on where to begin with the problem... Someone help explain how the problem should be done. An indoor physical fitness room consists of a rectangular region with a semicircle on each end. The perimeter of the room is to be a 200-meter single-lane

74. ## Social Studies

May you please check if my answer is correct? Why did the system of feudalism arise during the Middle Ages? (1 point) to develop an economic system to determine jobs within a city to defend the countries from attacks to organize the household of noblemen A

75. ## what is the defination and example of ethics and m

what comes to mind when you think of ethic or morality what is a example of a ethical belief and explain the the reason.

76. ## Chemistry

I cannot understand how the mass of the system has changed. There's no need for you to do my work please just explain it to me! :) thanks so much A scientist placed copper powder into a crucible and heated it until all of the copper reacted. The resulting

77. ## history

what were the two major religions represented in north america this time.?how did these relogions influence the war

78. ## Life orientation

Illustrate three ways on how this issue can impact negatively to the health of the people in your school/community.

79. ## Algebra I

If a set of ordered pairs is a function, are the ordered pairs also a relation? (Also, please explain why)

80. ## chemistry

Write potassium sulphate +barium nitrate ¨ potassium nitrate + barium sulphate as a balanced symbol equation

81. ## MCC

There are two race cars. the sum of their fastest speed is 50o.3 miles per hour. If the If the speed of one of the cars is 2.8 mph faster then the other car, what are the speeds of each car?

82. ## 7th grade math help

What is rational number as a terminating decimal? Also what would this be and how would it be solved 19/20 How would you turn it into a terminating decimal?

83. ## Sphere help

If the daimeter of a sphere is increased the volume will be increased by x% find x?

84. ## Social studies

Importance of social studies

85. ## Psychology

Could someone do this for me Imagine an action that you engage in every day and explain how neurons and neurotransmitters might work together to help you engage in the action by defining what the major parts of neuro do. ****Use complete sentences and

86. ## vector

evaluate integration of sinti+costj from 0 to pi/2

87. ## Indices

P=(64)^-2 Q=1/16^(1/3) R=8root2 Express pqr as a power of 4 P=4^(-6) Q=4^(-2/3) R= ???????? How can i find R? *please show me the method for future reference* Thankyou

88. ## Simultaneous equation xo difficult

X+y+z=2 x^2+y^2+z^2=3 x^3+y^3+z^3=5 find x,y,z.....?? honestly i having being battle with that question for ova a month i need help and a cerious explanation

89. ## Math

A bag of pears weighs 6.75 pounds. The pears cost \$2.39 per pound. What is the total cost of the pears?

90. ## CHEM

Using mass percentages:- The American Dental Association recommends that you should consume 3.0 mg of fluoride a day. If you get your fluoride in the form of sodium fluoride, what mass of sodium fluoride should you ingest?

91. ## birla public school

A mixture of 0.6 mole of al and 0.9 mole of cl2 are allowed to react as 2al+3cl2=2al2o3 . Calculate mass of reactant left unreacted. (al=27gmol-1 , cl=35.5gmol-1 )

93. ## Science 1 question

A researcher, studying dolphins in the wild, made the following sketch. Each dot on the map represents one dolphin. The area surveyed by the scientist was 1 km ^2. Based on the researcher's data, how many dolphins would you estimate to be in a 3 km ^2

94. ## physics

An object is thrown vertically up and attains an upward velocity of 10 m/s when it reaches one fourth of its maximum height above its launch point. What was the initial speed of the object? The acceleration of gravity is 9.8 m/s2. Answer in units of m/s

95. ## Spanish

I don't want the answer just check because I'm unsure 1) Definite article for the following noun? maestra el

96. ## chemistry

What is the molecular weight and formula for petroleum ether?

97. ## English

1. He continued (they, them) and similar interests all his life. 2. What amazing people were (they, them)! 1. them 2. them

98. ## chemistry

A mixture of 0.6 mole of al and 0.9 mole of cl2 are allowed to react as 2al+3cl2=2al2o3 . Calculate mass of reactant left unreacted. (al=27gmol-1 , cl=35.5gmol-1 )

99. ## health

What three processes does food undergo in the digestive system

100. ## social study

why is it hard to get a answer on your web site

101. ## English

1. Paul and (I, me) read about how he became crippled with polio. 2. (She, Her) and many others fought for equal rights for minorities. 3. Her aides and (she, her) traveled all over the world. 4. One of Eleanor Roosevelt's greatest admirers today is (I,

102. ## math

Can someone show me how to answer this question? Please? I would really appreciate any help you can give baseball statistics~~ “According to an Associated Press study, the average MLB salary will break the \$4 million mark for the first time in 2015,

103. ## math

Jim's backyard is a rectangle that is 15 5/6 yards long and 10 2/5 yards wide. jim buys sod in pieces that are 1 1/3 yards wide. How many pieces of sod will Jim need to buy to cover his backyard with sod?

104. ## Chemistry (check)

Are the following names correct? CN- cyanide ion H2O dihydrogen monoxide ClO2 chlorite ClO4- perchlorate N2O dinitrogen monoxide GeF4 germanium tetrafluoride SO32- sulfite IF3 iodine trifluoride PO33- phosphite NH3 nitrogen dihydrogen ICl3 iodine

105. ## CHEMISTRY

Suppose a sample of hot iron is dropped in a cup of room temperature water. a) what happens to the temperature of the iron & water? b.) in what direction does heat flow occur? c.) when does heat flow stop? d.) assuming no heat is lost to the environment,

106. ## English

1. Mr. Perez said we had to find a way to cover both topics. 1. Is we a subject pronoun in this sentence? Yes

107. ## health

Endocrine glands ________. A. Do not have ducts to carry their product to a surface B. Do not have ducts to retain their product below surface C. Have ducts that carry their secretory product to a surface D. Have ducts to retain their secretory product

108. ## Math

there are 16 girls and 20 boys in the school band. what is the ratio of girls to boys? Simplest form

109. ## chem

Calculate the mass of anhydrous sodium carbonate Na2Co3 required to prepare 2.5 litres of 0.50M aqueous solution.(Na=23,C=12,O=16)

110. ## Math

Which statement is false? A: Every integer is a real number. B: the number zero is a rational number. C: every irrational number is a real number. D: every real number is a rational number****

111. ## statistics

if you know the names of the starting batters for a baseball team, what is the probability of randomly selecting a batting order that is used in the beginning of the game

112. ## chem

CaCo3 reacts with aq HCl to give CaCl2+CO2. What mass of CaCo3 is required to react completely with 50cm^3 of 0.60M HCl. Calculate volume of CO2 produced at STP.

113. ## Math

What is a counters to show a group that is greater

114. ## educational tecnology

In your presentation you added a text box to ______. a.) cite a source b.) insert a footer c.) insert a header d.) insert a footnote Is it c?

115. ## math

Express the repeating decimal 0.2323 as a geometric series, and write its sum as the ratio of two integers

116. ## English

1. What's up, Ben? You look upset. - I lost first place. (Is this answer suitable? Do we have some other natural expressions?)

117. ## Chemistry

You are given 7.80g of Bromine gas in a container. Under identical conditions, you have 12.8g of an unknown gas. What is the molar mass of the unknown gas? - so, considering the molar mass of Bromine that I used was 159.808g/Mol, I did: 7.80g Br /

118. ## Algebra II

Hey all. I'm trying to solve this question, but don't really understand how to do it: If (x^4)^5 = x^a for all values of 'x', what is the value of 'a'? Any help is much appreciated, thanks!

119. ## Physics

A red colored ball tossed upward reaches a maximum height of 3.0m. show that the initial speed is 7.7m/s^2.

120. ## chemsitry

1)Balance the following gas-phase reaction and 2) write its reaction quotient, Qc: CH4(g)+F2(g)......>>.....

121. ## math

Elizabeth is an event planner who has been hired to plan a class reunion. The class has 275 people and 256 people will be attending. Elizabeth must plan the seating decorations and food. The school colors are blue and white. Elizabeth has 84 blue balloons

122. ## Southridge

What's the process if the input numbers are 1,2,3,4,5 and the output numbers are 2,5,10,17,26

123. ## Physics

What effect does the normal force have on the coefficients of friction?

124. ## Science

Please help: Observations can lead to hypotheses. Hypotheses can lead to new experimentation. Which best describes an observation and hypothesis that might lead to new experimentation? A. Dr. Sattler discovers a new plant that grows near underwater

125. ## Physics

In getting ready to slam-dunk the ball, a basketball player starts from rest and sprints to a speed of 6.20 m/s in 3.56 s. Assuming that the player accelerates uniformly, determine the distance he runs.

126. ## Physics

Two soccer players start from rest, 30 m apart. They run directly toward each other, both players accelerating. The first player’s acceleration has a magnitude of 0.49 m/s2. The second player’s acceleration has a magnitude of 0.43 m/s2. (a) How much

127. ## Science

What has the study of fossils allowed scientists to do? A) Describe the past environments and the history of life. B) Study present ocean temperatures at different depths C) Analyze the chemical compositions of sedimentary rocks and minerals. *** D)

128. ## Physics

Select the motion diagram that corresponds to each of the four situations. E.g., if diag. A corresponds to the first situation, diag. C to the second, and none of the diagrams to situations 3 and 4, enter ACNN. Note that the velocity and acceleration

129. ## MATHS

A wooden crate half full of pineapples has a mass of 14kg. The same crate one third full of pineapples has a mass of 12 kg. What is the mass of the empty crate? Please help, many thanks.

Which of the following fossil types is best described as forming when minerals replace all or part of an organism's body? A) A mold B) A petrified fossil*** C) A cast D) A trace fossil

131. ## science

What is the rarest element?

132. ## History

What was the main goal of the American Indian Movement? A)to achieve the right to form reservations B)to win greater rights for all Native Americans C)to establish a U.S. Bureau of Indian Affairs D)to overthrow the tribal government My choice B

133. ## math

An aquarium holds 6 1/4 gallons of water. The water level has dropped to 4/5 of this amount. How much water should be added to fill the aquarium?

134. ## welkin

a block of mass 50kg just slide distance of one metre if the coefficient of friction between their surface is 0.2,then work done against friction is

135. ## MATH

EXPLAIN HOW THE 6 IS IN THE THOUSANDS PLACE IN THE NUMBER 364,021

136. ## Math

At a certain marathon race, the winner comes in at a time of 130 minutes. Second place comes in at a time of 135 minutes, and third place comes in at 140 minutes. Starting with third place, contestants come in at regular intervals all the way up to the

137. ## chemistry

Suppose that after measuring the pH of 1.05 M HCl solution, three drops (0.20 mL) of the solution remain behind on the pH electrode. a) When this electrode is then dipped into 100 mL of pure distilled water, show by calculation that the pH of the water is

138. ## Life orientation

Critically analyze the impact of crime as a contemporary social issue on communities and poverty on global communities

139. ## General Chemistry

An experiment calls for you to use 100 mL of 0.65 M HNO3 solution. All you have available is a bottle of 2.7 M HNO3. How many milliliters of the 2.7 M HNO3 solution do you need to prepare the desired solution?

140. ## Science

The spin of an object on its own axis is called

141. ## chem

name the following binary acids. is the name for K2S, potassium sulphide or potassium sulfide? and is the name for K2Te, potassium telluride?

142. ## Physics

Select the motion diagram that corresponds to each of the four situations. E.g., if diag. A corresponds to the first situation, diag. C to the second, and none of the diagrams to situations 3 and 4, enter ACNN. Note that the velocity and acceleration

143. ## U.S. History

1. Why did the call for military volunteers lead more states to secede? A: Lincoln's call for military volunteers created a crisis in the Upper South. Many people in those state did not want to secede, but they were not willing to take up arms against

144. ## Math/Algebra

A painter earns \$15 per hour. what is the minimum number of hours he must work to earn at least \$200 write an inequality to represent this situation and solve show your work Im not sure =-=

145. ## math help

3x^2-6x-9 State the coordinates of the x-intercepts show work.

146. ## PHYS 101

A block of mass m = 1.70kg is released from rest h = 0.485m from the surface of a table, at the top of a θ = 27.4° incline as shown in the figure below. I got a few of the questions a)The frictionless incline is fixed on a table of height H = 1.98m.

147. ## atomic energy test question

38. A body having a mass 0.1 kg was weighed suspended in water and its mass was noted to be 88.5 gram. What will be the volume of the body? [Assume density of water to be 1.00 g/ cm3]

148. ## Maths

Three runners run a 10 metre race. Each runner runs according to the following rules: Runner 1: s = 2.4 + 0.75t Runner 2: s = 0.2t(t - 5.1) Runner 3: s = 0.2t(t - 5.1)(t - 9.1) Where displacement (s) is in metres and time (t) is in minutes. Calculate for

149. ## physics

obtain the resultant and direction of each pair of the forces 1.20N on top of a triangle and, 15N3 under the triangle and 45 as the degree of the triangle. 2.20N on top of right angle triangle and 15N under the right angle triangle.

150. ## Chemistry

When 0.100 g of calcium oxide is added to 125 g of water at 23.6°C in a coffee cup calorimeter, this reaction occurs: CaO (s) + H2O(l) -> Ca(OH)2 (aq) ∆H = -81.9kJ/mol If the specific heat capacity of water is 4.184 J g-1 °C-1, what is the final

151. ## global history

a.)what social classes did ancient Egyptians have? b.)what rights did women have?

152. ## Calculus

Find the antiderivatives. 1. f(x)= x sin (x^2) 2. f(x)= x sin x

153. ## College Algebra

Use quadratic formula to solve: 5x^2-10x+6=0

154. ## Geometry

Find the ratio of the interior angles of a triangle if their respective exterior angles are in the ratio of 5:6:7.

155. ## History

Based on the changes in New Mexico's population after World War II, which conclusion is best supported? A)Economic changes made New Mexico a difficult place to make a living. B)New Mexico's climate was believed to be dangerous and unhealthy. C)People were

156. ## College Algebra

1 - 1 = 1 ______________________________________ 4x-12 2x-6 x^2-3x Solve the equation (its subtracting the first two fractions and equalling the last fraction)

157. ## world geography

What major cultural feature is common throughout the region? What other cultural features could you use to further divide the Persian Gulf and interior Southwest Asia into more regions?

158. ## College algebra

A seamstress is designing a triangular flag so that the length of the base of the triangle, in inches, is 7 less than twice the height h. Express the area of the flag as a function of the height. I have figured out the area, but i'm not sure what the

159. ## global history

what rights did women have in Egypt?

160. ## maths

In 2010 a sample of 50 cars was taken, yielding 8 small cars, 27 medium cars and 15 large cars. A sample of 50 cars taken in 2015 revealed 10 small cars, 25 medium cars and 15 large cars. Calculate the chi-squared test statistic here.

161. ## science

what is the half-life of the nuclide

162. ## global history

which gods and goddesses were especially important to the ancient Egyptians?

163. ## Math

Julio is making a bookcase with 5 shelves. Each shelf is to be 3/4 yard long. How much wood does Julio need for the shelves?

164. ## College Algebra

factor completely: 16x^2 + 16x-21 I got not factorable...

165. ## College Algebra

simplify expression (no negative exponents) -2^-3(xy^3)^-2/x^-1y^-3 I got 1/-8x^2y^2

166. ## maths

Thabo is 5years older than Amy,in 7years time Amy will be 3/4`s of thabo`s age. How old is Amy now?

167. ## CHEMISTRY

IS THIS RIGHT? Name the following binary acids: HF(aq) – Hydrofluoric Acid HCl (aq)– Hydrochloric Acaid H2Se(aq) – Hydroselenide Acid HBr(aq) – Hydrobromic Acid HI (aq)– Hydroiodic Acid H2Te (aq)- hydrotelluric acid

168. ## Physics

A car travels 3.0km due south and then 4.0km due west.what is it displacement from the starting point. R^2=A^2 B^2 am not sure if dat is the formula please help me

169. ## algebra

find the solutions to the equation; x^(2/5)-8x(1/5)+16=0

170. ## Algebra

the sum of two times a number n and four less than three times the same number.

171. ## Fire protection eng

20,500 gallons of kerosene spill into a banked up area that measure 20 foot x 10 foot how long will the fire last it is left unattended ? 1 gallon = 3.785 liter 1000 liters = 1 m^3 1in = 2.54 cm 1ft = 12 in

172. ## OAKLAND

Using mass percentages:- The American Dental Association recommends that you should consume 3.0 mg of fluoride a day. If you get your fluoride in the form of sodium fluoride, what mass of sodium fluoride should you ingest?

173. ## math

Why could the mean of the data set below be misleading? ages of teachers: 29, 38, 39, 26, 29, 29, 39, 77, 38, 29

174. ## ict

peter works as a part-time assistant at a car wash and receives an hourly wage. enter the number of hours he worked for a specific week, as well as the pay rate per hour. he has to pay R5 towards the social club. calculate and display how much take home he

175. ## Life Orientation

Critically analyze the impact of crime as a contemporary social issue on local communities

176. ## crump elm

When you out together uneual groups you can only add. Is he correct? Explain

177. ## English

Identify the preposition. In spite of its popularity, the Pony Express lasted only 18 months. I'm stuck on this one:/ Please help.

178. ## maths

I need explanation to this question.solve 48 base12 multiply by 15 base12.i can solve it by first converting to base ten and back to base 12,but i need to be able to solve directly in base12.Thanks

179. ## Algebra

1\8(3d-2)=1/4(d+5)

180. ## global history

describe 3 achievements of ancient egyptians in the arts or learning

181. ## maths

find the amount and the compoud interest on r 12800 for 1year at 15/2% per annum, compounded semi- annually.

if a car is moving at some speed and then goes twice as far, would the braking distance be twice as far? yes or no? explain

183. ## english

which sentence is the best revision? a. My niece is a ballet dancer. b. My niece is a ballet dancer who performs both solo ballets and as a member of the ballet corps. c. My niece is a ballet dancer and I always enjoy attending performances.

184. ## english

Soap has existed since ancient times long ago? a. consistency b. parallelism c. concise language

185. ## Lititure

How do u write a melcon and rikki-tikki-tavi as a bully

186. ## Physics Projectile Motion

A projectile is launched at ground level with an initial speed of 51.5 m/s at an angle of 35.0° above the horizontal. It strikes a target above the ground 2.50 seconds later. What are the x and y distances from where the projectile was launched to where

187. ## Calculus 1

Use implicit differentiation to find an equation of the tangent line to the curve at the given point. x^2+2xy-y^2+x=6 , (2,4) (hyperbola)

188. ## Calculus 1

Use implicit differentiation to find an equation of the tangent line to the curve at the given point. x^2/3 +y^2/3 =4 (-3sqrt(3),1) (astroid)

189. ## Math

the sum of the ages of rex, ben and alfred is 36 years, two years ago, ben was 3 times as old as rex was then, 8 years from now, alfred will be twice as old as ben will be then. find their present age.

190. ## segi college

Do you think that southwest actions are consistent with its mission?explain ways in which the firms action are consistent or inconsistent with its mission

191. ## Math

the sum of the ages of rex, ben and alfred is 36 years, two years ago, ben was 3 times as old as rex was then, 8 years from now, alfred will be twice as old as ben will be then. find their present age.

192. ## Crump Elmentary

When you put together unequal groups, you can only add."is he correct?explain

193. ## St. Louise's Inclusive Secondary School

How to prepare 0.5m solution of HCL