# Questions Asked onFebruary 27, 2017

1. ## math

A restaurant offers a lunch special where you can choose any 3 of a total of 9 dishes. How many different combinations are possible?

2. ## Chemistry

An organic compound on analysis gave C=57.8% and H=3.6% and rest of oxygen.The vapour density of the compound was found to be 83.Find the molecular formula of the compound?

3. ## Math

For what values of x is the tangent line of the graph of f(x)=2x^3−12x^2+19x+0 parallel to the line y=1x+0.7 ? Enter the x values in order, smallest first, to 4 places of accuracy:

4. ## Math

Suppose that f(x)=6x^âˆ’4+9x^âˆ’2. Evaluate each of the following: f'(3)= f'(-1)

5. ## Physics

A balloon is filled with a gas which is lighter than air. It is observed to rise in air up to a certain height. State the reason why the balloon stops rising.

6. ## Math

f(x)=x^9h(x) h(âˆ’1)=5 hâ€²(âˆ’1)=8 Calculate fâ€²(âˆ’1).

7. ## Math

One hour after x milligrams of a drug are given to a person, the change in body temperature T(x) (in degrees fahrenheit) is given by the function T(x)=x^2(1âˆ’x/3). Further, the rate Tâ€²(x) at which T changes with respect to the size of the

8. ## Physics

Water of mass 200g and temperature 10digrees Celsius is put in a copper calorimeter of mass 80g. Steam from boiler at a normal pressure is passed into the calorimeter for sometime. The total mass of the calorimeter and contents is 283g. The final

9. ## Math

1 pt) Consider the function f(x), for which f(0)=4 and f′(0)=−6. Find h′(0) for the function h(x)=1/f(x). h′(0) =

10. ## Chemistry

At 3745°C, K = 0.093 for the following reaction. N2(g) + O2(g) equilibrium reaction arrow 2 NO(g) Calculate the concentrations of all species at equilibrium for each of the following cases. (a) 2.0 g N2 and 3.0 g O2 are mixed in a 1.3-L flask. [N2] [O2]

11. ## math

A bottle of juice concentrate gives the mixing ratio of concentrate to water as 1:5. How much water should be mixed with 2 cups of concentrate?

12. ## physics

which formular do to use to calculate distace in newton's law if i have height and angle?

13. ## biology

physics osmosis

14. ## Math geometry

1) The base angles of an isosceles triangle are (50-x)^6 and (30x-12)^6 what is the vertex angle? 2) The area of a trapezoid is 52cm^2 if it's bases are 8 cm apart find the sum of their heights 3) What is the area of a circle inscribed inside an

15. ## chemistry

Help me conclude my lab experiment on formula of a hydrate.with the aim of determine the number of molecules of water associated with a hydrated inorganic salt

16. ## maths

differentiate the cube root of (1+3xsquare)square.everytin over x

17. ## Math - ASAP Please

(Slope-Intercept Form) Which of the following lines has a slope of -1/2? A) x + 2y = 0 B) x - 2y = 0 C) -x + 2y = 0

18. ## Math (again) - ASAP please

The scatter plot below shows the profit earned each month by a new company over the first year of operation. h-t-t-p-s-: //cornerstonetx.ignitiaschools.-c-o-m/media/g_alg01_ccss_2016/3/img_alg1u03l12_13.-g-i-f The owner writes a line of best fit equation,

19. ## Math

Help me please. Hello I am having a hard the with finding square roots can someone please give me some resources or a step by step instruction to follow. Thank you!!!

20. ## Math

If the diameter of a circular pond is 50 m and the width is 2 m then what is the area of the pathway

21. ## MATH

IF A:B:C = 2:3:4, WHAT WILL BE THE VALUE OF A/B:B/C:C/A = ?

22. ## Science

Radioactivity is produced when unstable nuclei___ 1) bond together 2) break apart ***** 3) become cooler 4) expand I need help please

23. ## Math

Ramu is fourth times as ola as hi daughter after sixteen year he will be twice as old as his .Find his daughter present age

24. ## Math,science

The 5th term of an arithmetic progression is 23 and the 12th term is 37.find the third term and common different

25. ## History

Use the diagram to describe two ways the religious movement influenced reform. A. People were influenced to change their lives after attending revivals B. Religious leaders took a stand against the use of alcohol Is this what I should put for my answer?

26. ## chemisrty

I took 6.22 g of potassium hypochlorite and dissolved it up in a 100.0 mL flask. I then added 8.00 mL of 2.00 M nitric acid. The solution should be able to buffer that addition. How much more (mLs) of the nitric acid can the system take before it is no

27. ## SCIENCE

A BALL OF MASS 2KG FALLS FROM REST FROM A HEIGHT OF 200M.CALCULATE ITS KINETIC ENERGY AFTER FALLING A DISTANCE OF 50M?

The lecturer with a monotone voice of 440 Hz and you are both 2m away from the long, smooth and tall wall. You will hear sound that comes directly to you from the lecturer along with sound that comes back from the wall on it’s way to reaching you. You

29. ## MINNESOTA STUDIES

Multiple Choice 1. Which of the following most contributed to the formation of labor unions? (1 point) cuts to wages rising railroad rates grain elevator measures women working in factories 2. How did the Grange and the Farmers’ Alliance both work to

asked by NEED HELP PLZZZZ RIGHT AWAY!!!!!
30. ## Chemistry 2

A scientist studying the reaction between decaborane (B10H18) and oxygen mixed 1.00 x 10^2 grams fo oxygen. Compute the masses of all substances present after the reaction went to completion, generating B2O3 and water as the only products.

31. ## physics

a force is applied on a piston with radius of 2cm to lift a truck with a mass of 2400 kg sits on a piston with a radius of 180cm what is the magnitude of the applied force?

32. ## Algebra 1

Write a paragraph that provides examples of each stage of volcanic activity, a description of the volcano, and facts about each stage.

33. ## Language arts

What would you expect to be Downy? A diamond ring A baby rabbit * A pair of jeans A fallen pine cone In which sentence do the subject and verbs agree? Both cats and dogs sometimes gets fleas. Neither Philip nor Angie wants to cancel the show.* Automobiles

34. ## Social Studies

1. What strategy did the Allies agree upon in order to win WWII? A. move to Germany from all sides, then attack Japan by going through the Soviet Union B. defeat Germany and Italy first, then combine forces against Japan*** C. defeat Germany's navy before

35. ## Dangling Modifiers

Read the grammar notes carefully. Then, decide whether each of the following questions is correct, or whether it contains a dangling modifier! Q1.  Rifling through the papers, the letter was found.  Correct   Contains dangling modifier Q2.

36. ## Social Studies

3. General Eisenhower was the leader of what coordinate effort of the Allies during the war? A. defeating Germany on the Eastern Front at the Battle of Stalingrad B. organizing the meeting for the Potsdam Declaration C. Coordinating a naval attack to end

37. ## Genetics

Alkaptonuria is a recessive trait. If tow parents are carriers(heterozygous, unaffected), what is the chance they would have: A. 2 children, both with alkaptonuria? B. 3 children, all 3 not having alkaptonuria? C. 5 children, the first 3 not having

38. ## Hyperbole

Read the oral notes carefully. Then, decide whether each of the following statements contain a hyperbole! Q1. "If I’ve told you this story once, I’ve told it a million times!" a. Hyperbole b. No Hyperbole Ans: a. Hyperbole Q2. "I feel so hungry today.

39. ## math

The position of a bucket falling down a well can be represented by the function h(t)=-16t^{2} where t is time in seconds and h(t) is measured in feet. Based on this function, what is the velocity of the bucket after it has fallen for 4 seconds?

how can you prove 1/3 is smaller than 13/18 without explaining your reason on a fraction wall. thank you to people helping I will use this website again in future for help

asked by sky(i am new to this)
41. ## Math Need Help!!

Which Number Is A Perfect Square? A. 32~~~~ B. 144 C. 1000 D. 36000

42. ## Math 10

Change all these numbers to entire radicals in order to compare them. Then write them from smallest to largest in their original form. 9T2, 2T6,8T3,4T5,6T2 *pretend the T is a square root sign

43. ## Math

1. Estimate The Value Of (Square Root 52) to the nearest whole number A. 9 B. 8 C. 7~~~ D. 6 2. Identify all the sets to which the number 3.1214122144 Belongs A. Rational B. Irrational~~~ C. integer, Rational D. Whole Number, integer, rational 3. Which Of

44. ## Chemistry

What is the approximate ratio of the solubility of CaSO4 (Ksp = 2.4 x 10−5) in pure water to the solubility of CaSO4 in 0.10 M Na2SO4 at the same temperature?

45. ## Math

Simplify tell me how you do it (-5^4y^5)(2x^-2y^5)

46. ## calculus

Chocolate Box Company is going to make open-topped boxes out of 7 × 11-inch rectangles of cardboard by cutting squares out of the corners and folding up the sides. What is the largest volume box it can make this way? (Round your answer to one decimal

47. ## ELA

What is the best summary of the speakers basic message in Annabel Lee? I am heartbroken and I will never stop loving annabel lee.* Annabel Lee and I were friends from the time we were children. I am heartbroken I will and I will get revenge for Annabel

48. ## Social Studies

1.)Which of the following were actions that motivated Radical Republicans to seek the impeachment of President Johnson? Choose all that apply. A.)President Johnson encouraged former Confederate states to reject the Fourteenth Amendment. B.)President

49. ## Math

I'm not sure how to find the function for this graph. X|Y 0|5 1|8 2|11 3|14 Can this be explained?

93. ## math

The length of a rectangle is twice its breadth. If the perimeter is 42cm, find: 1) the length 2) the breath

94. ## math

John scored a mean mark of 75 in 3 tests. If he scored 55 in another test, find his new mean.

95. ## Math

A cell phone compnay offers its customers a monthly plan that cost $55 per month plus$0.08 for each minute used. If Marissa use 225 minutes in a month, how much will she pay for one month?

96. ## math

When a certain number is divided by 16, it has a quotient of 18 and a remainder of 10. What is the number?

97. ## Math

1. There are 14 blue marbles, 8 red marbles, and 12 green marbles in a jar. What is the ratio of the total number of marbles to the number of red marbles? (1 point) 24:8 34:8 8:34 8:24 2. Which of the following ratios is equivalent to fifteen over twenty ?

98. ## Math

Six more than the product of 11 and chau's height

99. ## Stats

A normal distribution has a mean of 120 and a standard deviation of 20. What score separates the top 40% of the scores from the rest?

100. ## Stats

A normal distribution has a mean of 120 and a standard deviation of 20. What score corresponds to the 90th percentile?

101. ## Stats

A normal distribution has a mean of 120 and a standard deviation of 20. What range of scores would form the middle 60%?

102. ## ss

which of the following statements best explains the scandals associated with the Harding administration? a Harding took bribes to place his friends in his cabinet b Harding's cabinet used their appointment as a way to get rich any way they could c Harding

103. ## physics

a car moving at speed of 5 m/s ,accelerates at a constant rate of 2.50 m/s^2 for 5.00s . what is the car final speed

104. ## Math

She ran 4 miles in 42 minutes. How many seconds did it take her to run 4 miles

105. ## math

John scored a mean mark of 75 in 3 tests. If he scored 55 in another test, find his new mean.

106. ## Chemistry

Silicon Carbide, SiC, is prepared by heating silicon dioxide in the presence of graphite. Carbon dioxide is the by-product of the reaction. How many grams of silicon carbide can be formed from the reaction of 50.0 grams fo graphite with 50.0 grams of

112. ## English

Identify the linking verb and the predicate nominative in each of the following sentences. 1. Kilim anjaro is the tallest mountain in Africa. 2. The kingdom of Siam became modern-day Thailand. 3. Dandelions can be a problem for gardeners. 4. Sue Mishima

113. ## math

Solve using unit rates. A person on a moving sidewalk travels 24 feet in 8 seconds. The moving sidewalk has a length of 60 feet. How long will it take to move from one end to the other. The person will take ___ seconds to move one end to the other. I'm not

114. ## Physics

A person walking across the room with a constant speed of 2m/s, and they run back with a constant speed of 8m/s. What is their average speed for the trip? I know the answer is 3.2m/s but I need help knowing how it's done. Greatly appreciated!

115. ## Chemistry

Thanks to Dr. Bob for answering all these questions! I always do poorly on conceptual problems. Consider the following equilibrium system at 25°C and select the true statement below: H2PO4−(aq) + SO42−(aq) ↔ HSO4−(aq) + HPO42−(aq) ΔG°rxn > 0

116. ## Science

A car is traveling at 8.9 m/s (20mph) in a school zone. A child darts in front of the car. Ignoring reaction time, the car can accelerate (brake) at -4.57 m/s. -How long will it take for the car to stop? -How far will the car travel in that time?

117. ## Math

there are six different kinds of fruit pies in a baker. Each pie is the same size and is cut into 8 equal slices. Mr. Javier buys a slice of each pie. How many pies did Mr. Javier buy altogether

118. ## physics

The eye of a hurricane passes over Grand Bahama Island. It is moving in a direction 77.2 ◦ north of west with a speed of 49.0 km/h. Exactly 2.92 hours later, the course of the hurricane shifts due north, and its speed slows to 22.4 km/h, as shown. How

119. ## math

Mrs Smith uses 5 lemons to make 2/3 gallon lemonade. How many gallons of lemonade can Mrs Smith make with 15 lemons

120. ## Pre Calculus 30

1.How many positive integers five-digit integers end with the digit 0? 9x10x10x10x? what number would represent zero 2.Using the digits {1,2,5,6,7,9} and not allowing repetition of digits, how many positive three-digit integers can be made that are larger

121. ## Math

Barbara is tiling her craft room with square tiles. She wants 6/10 of the square tiles to be red. If she used 18 red tiles, how many square tiles will be used to cover the floor . Draw an area model to help solve

122. ## Math

A ramp has been rise of 1.5 m for every 12 m of run. What is the slope of the ramp?

123. ## math

Trevor makes a scale drawing of a dog house that he has building. The skill he uses is 1 inch colon 4/10 feet. What is the actual area of the floor of the dog house if they dimensions on the scale drawing or 8 inches by 10 inches?

124. ## Chemistry

Calculate ΔG at 25°C for the precipitation of lead(II) iodide from mixing 100. mL of 0.10 M lead(II) nitrate solution with 100. mL of 0.10 M sodium iodide solution. The ΔG° for this precipitation reaction at 25°C = −46.2 kJ/mol.

125. ## math

Rose uses 1/8 pound of beef for each taco she makes. if she wants to make 12 tacos, how much beef will she need

126. ## Algebra1

Population of Mexico has been increasing at annual rate of 1.7% if population was 100,350,000 in year 2000, predict population in 2015. Round to nearest number

127. ## math

an artist buys a rectangular piece of paper for his artwork. he cuts the piece of paper into 8 equal strips. he uses 6 strips of paper and keeps the rest. what fraction of the rectangular piece of paper did he use?

128. ## math

Janet Home went to Citizen Bank. she borrowed \$7000 at a rate of 8%. The date of the loan was September 20. Janet hoped to repay the loan on January 20. Assuming the loan is based on ordinary interest, Janet will pay back how much interest on January 20?

129. ## History

What century was capitalism founded

130. ## Algebra1

Determine 5th term in the geometric sequence whose first term id 4 and whose common ratio is 3

131. ## History

What year was socialism founded/ came into prominence? Was it 19th century SAme thing with Marxism?

132. ## History

What are the similarities between Socialism and Marxism? For some reason, when I search this on google, only the differences pop up.

133. ## physical science B

I have to build a roller coaster with 3 hills. Hill A is 15 inches high,it drops down to 3 inches, rises to 8 inches, drops again to 5 inches and rises a last time to 3 inches before dropping off. My question is when using a tennis ball as the car.. 1.

134. ## Algebra1

Determine 3rd term in the geometric sequence whose first term is -8 and whose common ratio is 6

135. ## Pre-Algebra

A sphere and a right cylinder have the same radius and volume. the cylinder has a height of 3 inches find the radius.

136. ## math

a girl runs 250m in 12and a half seconds what is her average speed in metres per second

137. ## chemistry

A student dissolves a .726 g aspirin tablet in water and titrates the solution with .272 M NaOH are required to reach the equivalence point. Calculate the percentage of acetylsaliclic acid in the tablet. I am not really sure where to start with this. I

138. ## critical thinking

explain how rhetorical definitions, rhetorical comparisons, and rhetorical explanations differ

139. ## Calc

Use a comparison test to determine if the integral from 8 to infinity of sin^10(x)e^(-x) converges or diverges? I am stuck on what to use to compare. Any help is appreciated! Thank you! I was thinking -1

140. ## Chemistry

Calculate the mass of solid AgNo3 that can be added to 2.0 L of 0.10M K2CrO4 solution in order to just start precipitation? Here is what I have done so far: 2AgNO3(aq) + K2CrO4(aq) ==> Ag2CrO4(s) + 2KNO3(aq) Ag2CrO4(s) ===> 2Ag^+ CrO4^^2- Ksp =

141. ## English

Take a position that explains if, and to what degree, modern American culture is an outgrowth of the philosophies of the Founding Fathers. I agree that American culture is an outgrowth of the philosphies of the founding fathers. I have one reason and that

142. ## Algebra1

Determine the next geometric sequence number 1024,512,256,128

143. ## Physics

A car drive straight of the edge of a cliff that is 54m high. The police note that the point of impact is 130m from the base of the cliff. How fast was the car travelling when it went off the cliff.

144. ## Physics

A car drive straight of the edge of a cliff that is 54m high. The police note that the point of impact is 130m from the base of the cliff. How fast was the car travelling when it went off the cliff.

145. ## Calculus

A street light is at the top of a 14.5 ft. tall pole. A man 5.3 ft tall walks away from the pole with a speed of 5.5 feet/sec along a straight path. How fast is the tip of his shadow moving when he is 47 feet from the pole?

146. ## pre calculus

A projectile is fired straight upward from ground level with an initial velocity of 320 feet per second. (Assume t = 0 seconds corresponds to the time the object is fired. Use 32 feet/second2 as acceleration due to gravity.) (a) At what instant will it be

147. ## Science

What is the identity of the precipitate that forms when 70 mL of 0.3 M BaCl2 reacts with 65 mL of 0.35 M Na2CO3

148. ## Bology

Lysosome in plants-what organelles do you have experience working with? What skill set does it have?

149. ## physics

A 25-kg child sits at the top of a 4-meter slide. After sliding down, the child is traveling at 5 m/s. How much PE does he start with? How much KE does he end with? How much energy is lost to friction? if you push a box across the floor with a force of 30

150. ## chemistry

Write the reactants and products of the reaction between zinc and oxygen. Include the half-reactions. What type of reaction is this? I know the reaction is 2Zn + O2 -> 2ZnO I am not really sure where to go from here.

151. ## Calculus

A road perpendicular to a highway leads to a farmhouse located 6 mile away. An automobile traveling on the highway passes through this intersection at a speed of 75mph. How fast is the distance between the automobile and the farmhouse increasing when the

152. ## Analytical Chemistry

A solution is prepared by dissolving 0.2222 (¡¾0.0002) g of KIO3 in 50.00 (¡¾0.05) mL. (i) Calculate the molar mass of KIO3 with its associated uncertainty to the correct number of significant figures. (ii) Find the molarity and its uncertainty with an

153. ## Algebra

An ant is roughly 10^(-3) meters in length and the average human roughly one meter. How many times longer is a human than an ant? The human is ____ times longer than an ant.

154. ## Math

Use the Elimination Method to Solve for x and y 2x – y = -2 x + y = 5

155. ## Us History

how can the great depression in the US give rise to dictators like Hitler and Mussolini?