# Questions Asked onNovember 19, 2015

1. ## Chemistry

What is the molality of each of the following solutions? 1)Dissolve 0.610 mol of citric acid, C6H8O7, in 1.35 kg of water. 2) Dissolve 0.200 mg of KBr in 5.50 mL of water. 3) Dissolve 4.05 g of aspirin, C9H8O4, in 145 g of dichloromethane, CH2Cl2. For some

2. ## MIZAN_TEPI UNIVERSITY

IF Vector B added to vector c=3x+4y,the result is in +ve y_axis with magnitude equal to that c,what is the magnitude of B?

3. ## english

what is the meaning of prestatement clue

4. ## science

before 1937, all naturally occurring elements had been discovered except element 43. chemists predicted the chemical properties of this element, now called technetium. how were those predictions possible?

asked by serina chenette
5. ## History

***= my answers 1.) Shared government power between the states and federal government is known as Limited government Popular sovereignty Federalism*** None of the above. 2.) The government has only as much authority as the people give it is known as

6. ## Child day care

One example of a form that would be created for staff at a child care center is a/an A. enrollment application. B. billing notice. C. diaper check record. D. fingerprint form. My answer is D, but I'm not sure.

7. ## Chemistry

P4 (g) + 3O2 (g) P4O6(s) At a particular temperature, Keq = 4.6. If [P4O6] at this temperature is 1.2M, calculate the concentration of P4 and O2 I'd rather have someone tell me how to do it, so I can do it myself since it's in preparation for an exam.

8. ## Physics

The following calculations are for EM radiation, for which the internal energy U=Vu, where u=u(T)is the total energy density. a) Show that (∂S/∂T)_v=V/T(du/dT), and and (∂S/∂V)T=(u+P)/T Note: use the answers in part a in part b and c b) Using

9. ## Physics

A container is initially partitioned by a wall into two compartments. The left compartment has volume V1 and the right compartment has volume V2. Both compartments are filled with identical ideal gases at the same temperature T and with an equal number of

10. ## Physics

The following calculations are for EM radiation, for which the internal energy U=Vu, where u=u(T)is the total energy density. a) Show that (∂S/∂T)_v=V/T(du/dT), and and (∂S/∂V)T=(u+P)/T Note: use the answers in part a in part b and c b) Using

11. ## Physics

The following calculations are for EM radiation, for which the internal energy U=Vu, where u=u(T)is the total energy density. a) Show that (∂S/∂T)_v=V/T(du/dT), and (∂S/∂V)T=(u+P)/T Note: use the answers in part a in part b and c b) Using

12. ## statics

What is a 95% confidence interval for the time my colleagues can stay awake on average for all of my colleaguesWhat is a 95% confidence interval for the time my colleagues can stay awake on average for all of my colleagues n=10sample mean = 2.33 not sure

13. ## Chemisty

the Keq of Mg(OH)2 is 2(10^-11). calculate the concentration of Mg ions in a saturated solution of this compound

14. ## Physics

The 9-ball travelling and strikes the 13-ball, which is of equal mass and at rest. If this is an elastic collision, which statement below is true? Marks 3+4 = 7 a) All of the 9-ball’s energy and momentum are transferred to the 13-ball. b) All of the

15. ## math

Find the area of the region. (Round your answer to three decimal places.) between y = cos t and y = sin t for −π/2 ≤ t ≤ π/2

16. ## PHYSICS

A BATH CONTAINS 100 KG OF WATER AT 60 DEGREES CELCIUS. HOT AND COLD TAPS ARE THEN TURNED ON TO DELIVER 20KG PER MINUTE EACH A TEMPERATURE 70 DEGREES CELSIUS AND 10 DEGREES CELSIUS RESPECTIVELY. HOW LONG WILL IT BE BEFORE THE TEMPERATURE IN THE BATH HAS

17. ## math

what is diameter of the atomic nucleus of a lead atom is 1.75x10 negative15m

asked by angel laica baa
18. ## Maths

find two positive real numbers x and y such that their product is 800 and x+2y is as small as possible

19. ## Math

A factory produces x calculators per day. The total daily cost in Shillings incured is 5x^2-800x+500. If the calculators are sold for sh (100-10x) each, i, Determine the profit function ii, Find the number of calculators that would maximize the daily

20. ## Math

A family wants to begin saviving for a trip to paris. The trip is planned for 3 years from now, and the family wants to accumulate one million shillings for the trip, if twelve deposits are made quartely to an account which earns interest at the rate of 8

21. ## math

a cube of side 4 cm is cut into i cmcubes. the ratio of the surface areas of the original cubes and cut-out cubes is

22. ## math

Their are 12 crayons - 1 =9

23. ## Math

At Cross Country, Tina can run 12 miles in 3 hours. How far can she run in 1 hour?

24. ## A.AA.SK.v. math

2.7.12....10term

25. ## rbm

A meter stick dropped a shadow of length 70 cm in the sun .at the same time ,a tree dropped a shadow 5.6m long .what is the height of the shadow

26. ## Comm Tech

2.)How many positions are there in the media & design department? A.)One B.)Two C.)Three D.)Four

asked by YRN DJ
27. ## Comm Tech

3.)Which department is spending the least on salaries? A.)Accounting B.)IT C.)Marketing D.)Media & Design

asked by YRN DJ
28. ## Comm Tech

4.)Which Department Is Spending The Most On Salaries? A.)According B.)IT C.)Marketing D.)Media & Design

asked by YRN DJ

simplify the expressions... 1. (x^3)^5 2. (y^4)^5 3. 4^8/4^2(this is a fraction) 4. b^2/b^4(this is a fraction) 5. 28xy^7/32xy^12(this is a fraction) Please show me step by step because I am not really understanding these types of problems...

30. ## Physics

A cyclist travels a distance of 1200m due north before going 200m due east followed by 500m south-west.Draw a scale diagram to calculate the cyclist's displacement from her initial position.

31. ## math

A cubical water tank has each edge 5m long. Find the volume of water in the tank if 1/5th of the tank is empty. Pls help... Urgent***

32. ## English 1

the old people i remember from my childhood were strong in their beliefs, and as we lived daily with them we learned a wise path of life to follow.this quote from 'A celebration of grandfathers' by rudolfo anaya shows what writing style?

33. ## Math

A bodybuilder loads a bar with 550 Newtons (~125 pounds) of weight and pushes the bar over her head 10 times. Each time she lifts the weight 0.5 meters. How much work did she do?

34. ## scale factors

The model of airplane has a wings[an of20 inches. The model scale of 1 inch = 3.5 feet. what is the wingspan of the actual airplane.

35. ## Math

In my textbook, I was given these directions to follow when doing these problems: **Multiply. Express each result in Scientific Notation** 1. (4 x 10^9)(6 x 10^6) My work: (400,000,000)(600,000)= 240,000,000,000,000 My answer: 2.4 x 10^14 Am I right? 2. (5

36. ## HVAC

A gas is compressed inside a compressors cylinder. When the piston is at its bottom dead center , the gas is initially at 10 psig , 65 degree and 10.5 in. After compression and when the piston is at top dead center the gas is 180 degree and occupies 1.5

37. ## math miss.sue can u plz check me answers plz

which of the following appears to be an irrational number? A. 3.7272727272... B. the root of 64 C. -6/25 D. 0.73303330...

38. ## SCIENCE PLZ I NEED HELP NOW

The joints highlighted in the image below are _______ joints. Fill in the blank

39. ## Algebra I

**Match each word or phrase w/ its definition** Word Bank: A) least common multiple (LCM) B) repeating decimal C) reciprocals D) dimensional analysis E) terminating decimal F) least common denominator (LCD) G) multiple

40. ## texas history

which of the following was the weakness of the alamo

41. ## Delhi International Happy School

Nisha had 12 baloons-2yellow,3orange,4red,3 purple. what fraction of her balloons was not yellow?

42. ## Math

Bird flies 80m east, then 60m south, then straight up In to sky for 30m. A)at this point how far is bird from his nest?

43. ## 7th Grade Proportion Help

A 10 acre field produced 750 bushels of corn. At that rate, how much corn can be produced from a 14-acre field? I really need help understanding this question I'm not looking for the answer. Please Help Me!

44. ## science

A boy shoves his stuffed toy zebra down a frictionless chute, starting at a height of 1.75 m above the bottom of the chute and with an initial speed of 1.07 m/s. The toy animal emerges horizontally from the bottom of the chute and continues sliding along a

45. ## Pre-Algebra

how do I solve... 6/x + 3/ (I'm studying adding and subtracting mixed/improper fractions)

asked by |||Tris Prior|||
46. ## maths

My 1st question is: What is the cost of 1.2kg of putty at €3 a kg? And last question is: A salesman bought a car for €5,000 but later had to sell it for €4,750. How much was his loss?

Y - 5=1 over 3 A. -2 B. 8 C. 18 D.6 6x + 29 = 5 A. -4 B. -18 C. 204 D. -144 Combine like terms -21a + 16a A. -5a B. 5a C.37a D. -37a Simplify the expression 9a - b -2a - 10b A.-7a + 11b B. 11a+ 9b C. -11a+ 9b D.7a+11b 5(x+10)+x A. 6x+15 B.5x+15 C.6x+50

48. ## Chemistry

A student titrates a 25.00 mL sample of HCl. If 20.50 mL of 0.175 M of KOH is required to reach the end point, what is the concentration of the HCl? 25.0 mL HCl x 1L/1000 mL x 0.175 M/1 L = 0.004375 mol HCl 0.004375 mol HCl/20.50 mL KOH x 1000 mL/1 L =

49. ## English

Choose the answer that best matches the word "metamorphosing." When London speaks of Buck metamorphosing, he means that Buck a. lost his appetite b. changed into a different kind of dog*** c. dominated the sled dog team d. returned to his homeland Just

50. ## English

Choose the answer that best matches the word "transient." A camp could be described as transient because it is a. sheltered b. temporary*** c. flimsy d. insular Just checking my work:) *** - My Answer Thanks, Kaai97

51. ## English

Choose the answer that best matches the word "hindquarters." The farmer had to remove a large thorn from the horse's hindquarters. a. chest b. hoof c. front leg d. rear leg*** Just checking my work:) *** - My Answer Thanks, Kaai97

52. ## English

Choose the answer that best matches the word "chivalrous." In a chivalrous gesture, Morgan sat in the hard chair, leaving the soft one for the elderly woman. a. confusing b. courteous*** c. harried d. reasonable Just checking my work:) *** - My Answer

53. ## English

In Call of the Wild, whom does Buck replace as leader of the sled dogs? a. Sol-leks b. Dave c. Spitz*** d. Dolly

54. ## Chemistry

Why did Mendeleev leave gaps in his early periodic table, and what was the ultimate importance of the gaps?

55. ## IT

A list of tasks to be completed by a company for a special project is C Detailed Invoice Statement of Work Statement of Workload System Workload

56. ## English

In Call of the Wild, when John Thornton threatens against Hal against beating Buck any further, the conflict can best be described as a. man vs. man*** b. man vs. himself c. man vs. nature d. man vs. society

57. ## Algebra

__fl oz = 1 1/2 pt 2 3/4 t = __lb

58. ## Social Studies

what was significant about henry Mcneal Turner and black legislators? choose all that apply. 1. Their offices were protected by republican politicians. 2. They were African Americans elected to public office in the south after the civil war. 3. They were

59. ## Social Studies.

Who wrote the Declaration of Independence? A) George Washington B) Thomas Jefferson*** C) John Adams D) Benjamin Franklin I am confused because I know B,C, and D had helped write it.

asked by Alexia Smith
60. ## Calculus 1

Find the local maximum and minimum for the function f(x)=2x^3-3x^2-120x+10

61. ## math

review exercise 10 question 2

62. ## English

It is a conversation between two friends about their journey to London. John asked Lee whether he had talked with the travel agent for Visa regarding their journey to London. Then, Lee replied him that the travel agent informed him that it would take at

63. ## Social Studies

what was significant about how the Ku Klux Klan gained power and influence in the south?Choose all that apply. 1. It was often made up of important men in the Southern society 2. it was funded by northern politicians 3. It used fear and cruelty to send

64. ## Algebra

I need more guidance on these...o_o Simplify these expressions 1. (x/3)^2 2. (2a/c^2)^4 (the expressions in the parentheses are fractions)

65. ## Statistics

The percent of fat calories that a person in America consumes each day is normally distributed with a mean of 36 and a standard deviation of about 10. Suppose that 16 individuals are randomly chosen for an experiment. A) Is it appropriate to use the normal

66. ## Chemistry

What properties do metalloids display, and where are metalloids found on the periodic table?

67. ## Calculus 1

Find each limit: (a) lim x->1 (ln(x)+2x-2)/(x^2-1) (b) lim x->infinity (x^2)/(e^x)

68. ## TEXAS HISTORY PLZ HELP FOR THE QUIZ I HAVE TODAY

what factors weakened the texas army at the end of 1835

69. ## algebra

The area of a circle is 78.5 square centimeters, and a subtending arc on the circle has an arc length of 6pi. The estimated value of is 3.14. what is the measure of the angle subtended by the arc in degrees?

70. ## World History

what is the social position of a merchant in both Christian and Islamic worlds.

71. ## math

Mr. X invested a part of his investment in 10% bond A and a part in 15% bond B. His interest income during the first year is Rs.4,000. If he invests 20% more in10% bond A and 10 % more in 15% bond B, his income during the second year increases by Rs.500.

72. ## math

If matrix A has x rows and x + 5 columns, matrix B has y rows and 11 – y columns and both AB and BA are defined for product then x and y are:

73. ## Physics

A 5.0 kg skater begins a spin with an angular speed of 4 rad/s. By changing the position of her arms, the skater decreases her moment of inertia to one half its initial value. What is the skater's final angular speed? I thank you in advance for your time.

asked by Jose Luis
74. ## Social Studies

Well- this is kind of social studies...so anyway, I have to do a presentation on automobiles and I wanted to know some problems with automobiles in the 1920's? I already have: The automobiles scared horses because they were so noisy, people drove there

75. ## science

a chunk of lead has a volume of 45cm^3 and a mass of 510g. What is the density of lead.

76. ## Calculus

Evaluate using long division. The integral of x/6x-5 dx How do I divide this?

109. ## math

1. The amount Rs 2100 became Rs 2352 in 2 years at simple interest. If the interest rate is decreased by 1%, what is the new interest? 2. My grandfather was 9 times older than me 16 years ago. He will be 3 times of my age 8 years from now. Eight years ago,

110. ## High school

A bullet traveling 700 m/s horizontally hits a target 150 m away. How far does the bullet fall before it hits the target?

111. ## math

can someone tell me why 9/15 is equivalent to 3/10 I cant seem to figure it out,??

112. ## TEXAS HISTORY PLZ HELP FOR THE QUIZ I HAVE TODAY

why did santa anna stay in texas A. he expected a difficult time defeating the rebels B.he had no desire to return to mexico C.his general persuaded him to remain D.he wanted to watch the destruction of the towns***** 2.santa anna orderd his troops in

113. ## English

Which of the following sentences illustrates that The Call of the Wild is in third-person omniscient narration A. “’You ain’t going to take him out now?’” B. “’I’m takin’ ‘im up for the boss to ‘Frisco.’” C. “’Buck did not

114. ## English

The detail that Buck used to hunt with the Judge's sons is part of which element of the plot of Call Of The Wild? A) climax B) conflict C) exposition*** D) rising action

115. ## math

The value of 4x^3-x/(2x+1)(6x-3) when x=9999 If 7 men working 7 hrs a day for each of 7 days produce 7 units of work, then the units of work produced by 5 men working 5 hrs a day for each of 5 days is? Pls help***

116. ## Fractions

Kathy had 40 dollars. She gave Jared 3/4 of it .How much money did she have left?

117. ## math

out of 9/15 and 3/10 and 6/10 which are equivalent? and could toy tell me why, I am having difficulties with this! thanks

118. ## CIVIC EDUCATION

WHAT ARE THE MAJOR LOCAL CIVIC PROBLEMS?

asked by IBRAHIM UMAR
119. ## English

The High School Step Team Karla’s cousin Jade urged her to join the step team. “This afternoon you should definitely try out!” Jade suggested after the final bell rang. “I know she wants the best for me,” Karla thought to herself, “but I’m

120. ## Science

Name two types of evidence used to support the theory of evolution. Explain how scientists use each type of evidence to provide support for evolution. Give one example of each.

asked by Alexia Smith
121. ## Math

A dilation has center (0, 0 ,0). Find the image of the point (-1, -2, 0) for the scale factor of 3.

122. ## math

another question I have, is what if you deposit $125 in American currency saving account, if the exchange rate is the same how much American money would I get if I exchange$400 in Canadian currency

**Fill in the appropriate vocab words that best fit into the sentences below** ~" Word Bank "~ A) central angle B) line of symmetry C) reflection D) transformation E) vertical angles F) transversal G) point H) circle

124. ## algebra

12 less than the product of 14 and b

125. ## Physics

At the moment when a shotputter releases a 7.26 kg shot, the shot is 2.0m above the ground and travelling at 15.0 m/s. It reaches a maximum height of 8.0m above the ground and then falls to the ground. Assume that air resistance is negligible. What is the

126. ## Chemistry

A solution of 0.316 M KOH is used to neutralize 16.0 mL H3PO4 solution H3PO4(aq) + 3KOH(aq) ¨ K3PO4(aq) + 3H2O(l) If 30.3 mL KOH solution is required to reach the endpoint, what is the molarity of the H3PO4 solution? Molarity = ____________

127. ## Stats

Fill in the table below regarding populations and samples. The first column represents the question the statistician is trying to answer. Fill in the blank(s) for each row. 1.Is my well water safe? 2.Are as many girls born as boys in the world? 3.Which

128. ## Calc

Set up an exponential function to model each real world situation then use it to find the requested values. The half-life of Carbon 14 is about 5700 years. You begin with 800 grams of this isotope. 1) Function: 2) How much Carbon 14 is there after: a)

129. ## math

How many fewer minutes would it take the driver to travel a distance of 10 miles at a speed of 65 miles per hour than at a speed of 50 miles per hour? Round your answer to the nearest minute.

130. ## Math fractions

A picture frame is 6 1/4 inches wide by 8 inches tall. If a 5 inch by 7 inch picture is to be centered in the frame, what should the right margin be?

131. ## Chemistry

1.) Watch the animation, and observe the titration process using a standard 0.100 M sodium hydroxide solution to titrate 50.0 mL of a 0.100 M hydrochloric acid solution. Identify which of the following statements regarding acid-base titrations are correct

132. ## Math

In the accompanying diagram, the perimeter of isosceles triangle MNO is equal to the perimeter of square ABCD. If the sides of the triangle are represented by 4x+4 , 5x-3, 17 and one side of the square is represented by 3x, find the length of the square

asked by Randy James
133. ## ---->history <----

According to the published works of santa anna, all of the following were resons for the mexican army defeat exept A.untrained recruits. B.his own micalculations C the soldiers fatige and lack of food D. supply problems

134. ## Hisotry

Does anyone have any examples of how the first amendment can be used today? Thank you!

135. ## math

Help me with this In a class of 30 students, 18 offer mathematics (M), 15 offer science (S) and 13 offer english (€). The number of students who offer all the three subjects is equal to the number of students who do not offer any of these subject. 10

136. ## Math

Evan type 72 pages of notes one day. He typed one half of the pages in the morning and one third of the pages in the afternoon. He type the rest of the pages in the evening. How many pages of notes that he typed in the morning and afternoon

137. ## Math

1. What compromise did states reach for the purpose of determining representation by population in the House of Representatives? (1 point) Slaves would be counted as three-fifths of a person for official population counts. Slave populations would count for

138. ## Algebra 2 (Math)

Solve by the system of equations by substitution. x + 2y + z = 14 y = z + 1 x = -3z + 6 Anyone able to help me with this? I've been stuck on it all day and can't seem to solve it, it doesn't make any sense to me.

139. ## math rounding number to the underlined digit

8,464 the 8 is underlined my answer is 8,000 is that correct?

140. ## Physics

A 5.0 kg skater begins a spin with an angular speed of 4 rad/s. By changing the position of her arms, the skater decreases her moment of inertia to one half its initial value. What is the skater's final angular speed? I know the answer to be 8 rad/s,

asked by Jose Luis
141. ## algebra

I need help solving this please. x/4 - x/5 - 1/3 = 16/15

Biochemistry

143. ## M

How I can write 35%as the sum of two benchmark

144. ## Marh

If my friend and I found 75 apples and I found 1 1/2 more than he did. How many did we each find?

Biochemistry

146. ## Algebra 1

You use a line best fit for a set of data to make a prediction about an unknown value. The correlation coefficient for your data set is -0.993. How confident can you be that your predicted value will be reasonably close to the actual value? a. I can't be

147. ## History

***= my answers 5.) A principle that divides power among the executive, legislative, and judicial branches of government is known as separation of powers. *** checks and balances. open door policy. referendum. 6.) Loyalists differed from Patriots in that

148. ## MATH

5a2b – 13ab + 7a3 – 4b, in decending order

asked by Help URGENT I NEED IT NOW!
149. ## Physics

Find the pressure at the bottom of a swimming pool that is 1.1 m deep.

150. ## Algebra

Word problem: A house is to be built on a lot 70ft wide by 100ft deep. The shorter side of the lot faces the street. The house must be set back from the street at least 25ft. It must be 20ft from the back lot line and 10ft from each side lot line. What are

151. ## science help

Two scientists did the same experiment but arrived at different results. The scientists most likely did not have accurate data and information misunderstand each other's interpretations belong to different backgrounds did not have instruments to take

152. ## algebra

How do you enlarge a pentagon and it's interior segments by a scale factor of 2. Then, enlarge it again by a scale factor of 4?

153. ## MATH

5a2b – 13ab + 7a3 – 4b how many degrees, and classify the term

asked by Help URGENT I NEED IT NOW!
154. ## English

What best describes Emily Dickinson's attitude towards death? A.sentimental B.angry C.accepting

155. ## english

According to Dickinson, what is the character of Nature? Nature divides people from each other Nature is intentionally heartless Nature offers inspiration and meaning A or probably B.

156. ## science help

One scientist discovered a new theory on the evolution of the universe. What is the next step for the scientist to take? A. transform the results of the theory into universal laws of nature. B. inform the scientific community so they can verify the

157. ## Biology

Find the complimentary DNA sequence after going through DNA replication… 1) AAGTCCAT a) ACTGAATG 2) TGACTTAC b) CGGAGTTT 3) GCCTCAAA c) TTCAGGTA

158. ## chemistry

Write the molecular,complete ionic, and net ionic equations for the reactions that occur, if any, when solutions of the following substances are mixed: a) nitric acid and potassium carbonate b) sodium bromide and lead nitrate c) acetic acid and calcium

159. ## measurement

how many feet are in 1 mile and how many yards are in 1 mile

160. ## chemistry

what is the molarity of the KCI solution.

161. ## Algebra 1

systems of equations with different slopes and different y-intercepts have more than one solution Always sometimes Never I believe it is Never or sometimes I am leaning towards Never

asked by A User
162. ## World History

This is only part of the whole passage. What is the best way to simplify the horrific event because all this info is great to to include in my Summary but I don't want to include it all. ______________________________________ In the Republic of

163. ## algebra

How do you enlarge the pentagon and its interior segments by a scale factor of 2. Then, enlarge it again by a scale factor of 4?

164. ## algebra

The data below shows the number of hours a week on average a group of students spend volunteering for community service projects. What is a cumulative frequency table that represents the data? 4 5 10 21 6 2 9 8 12 15 8 14 6 4 6 11 3 2 9 16 22 23

192. ## geometry

how do you factor x^2-100 ?

193. ## English

Please help me correct grammar. Please be informed that starting on Nov.22,2015. Due to high consumptiom for the lectric bills. The internet usage charge will be P15.00 per hour and there will be no promo for P25.00 2 hours. Thank you.

194. ## Math

I need help understanding how to identify the transformations when the quadratic is in factored form. f(x) = (x+3)(x-1) Thanks...

195. ## geometry

also how do you factor 16n^2-9 ?

Math Bev has 25 books in her bookshelf that are either mystery or romance. If r represents the number of romance nooks she has, write an expression in terms of r that represent the number of mystery books she has.

asked by Gina Causley
197. ## Business Math

Myerson borrowed $8,500 at 9% ordinary interest for 200 days. After 120 days, he made a partial payment of$4,000. What is the final amount due on the loan?

198. ## Math

The ratio of the lengths of the sides of a triangle is 2:4:5. The largest side is 33" longer than the small side. What is the perimeter? I don't know how to start it help please

199. ## English

Please check my answer There was one student still taking the exam when the bell rang. Student is the subject and exam is the simple subject.

200. ## English grammar

Please help me to arrange correct grammar below: Nov. 18,2015 Please be informed that starting on Nov.23, 2015 Due to high consumptiom for the electric bills The internet usage charge will be P15.00 per hour and there will be no more promo for P25.00 2

16n^2-9 ?

202. ## math

When x¡ú0 cosec(x) - cot (x)/ x =?

203. ## geometry

9x^2-25 ? so lost.

204. ## Physics

If a 180 pound body was dropped from a plane 5 miles in the air - how long would it take for the body to reach the ground?

205. ## math

How do you subtract radicals? Example wise.

asked by khloe johnsonn
206. ## Chemistry

I have the mass of one element and the moles of a compound, How do I find the mass of it'd Product? [Zn + 2HCl = ZnCl2 + H2] (Slove for mass of ZnCl2)

207. ## Science

A 6.90-g sample of solid NiSO4·6H2O was heated such that the water turned to steam and was driven off. Assuming ideal behavior, what volume would that steam occupy at 1.00 atm and 100.0 °C?

208. ## Chemistry

Zinc - .5 grams HCl- .2 moles Find the Mass of ZnCl2 [How would you solve this?]

209. ## math

5 lbs of walnuts equally divided into containers. each holds 5/8 of a pound . how many containers will be filled

210. ## math

Compute the hurdle rate above based on the following.1. Note payable bank $2,000,000.00 with rate of 7.5%, The company has a tax rate of 30%.2. Bank Mortgage Loan$1,000,000.00 with rate of 6% The company has a tax rate of 30%.3. Preferred stock

211. ## Math: Geometry

The bases of trapezoid $ABCD$ are $\overline{AB}$ and $\overline{CD}$. We are given that $CD = 8$, $AD = BC = 7$, and $BD = 9$. Find the area of the trapezoid. [asy] unitsize(1 cm); pair A, B, C, D; A = (1,2); B = (3,2); C = (4,0); D = (0,0);

asked by I see you have graph paper. You must be plotting something.
212. ## chemistry

a gold nugget and a silver nugget have a combined mass of 14.9g. The two nuggets are heated to 62C and dropped into 15.0mL of H2O at 23.5C. When thermal equilibrium is reached, the temperature of the H2O is 25.0C. Calculate the mass of each nugget. Denisty

213. ## physics

two point charges +q and -q are separated by a distance d. aside from infinity, where else is the potential due to these two charges 0?

214. ## Math

The quantity of p + 4 divided by 2

215. ## Math

Samantha wants to find the height of a pine tree in her yard. She measures the height of the mailbox at 3 feet and its shadow at 4.8 feet. Then she measures the shadow of the tree at 56 feet. How tall is the tree?

216. ## physics

the following point charges are placed on the x-axis: +2.0μC at x=20cm,-3.0μC at x=30cm and -4.0μC at x=40cm. What is the potential at x=0?

217. ## Physics [Help, need answer in 10 min]

During a solar eclipse, the moon (of mass 7.36 × 1022 kg), Earth (of mass 5.98 × 1024 kg), and Sun (of mass 1.99 × 1030 kg) lie on the same line, with the moon between Earth and the Sun. What gravitational force is exerted on the moon by the Sun? The

218. ## Chemistry

CO(g) effuses at a rate that is ______ times that of Xe(g) under the same conditions.

219. ## math

the ratio of boys to girls in the gym is 7:5. when 6 more girls enter the gym, the ratio of boys to girls becomes even. how many boys and girls now in the gym?

220. ## math

for every 12 people crossing the street, 7 of them used the pedestrian lane and the rest did not. if 48 people crossed the street, how many did not cross in the pedestrian lane?

221. ## Chemistry

A sample of Br2(g) takes 38.0 min to effuse through a membrane. How long would it take the same number of moles of Ar(g) to effuse through the same membrane?

222. ## math

a bakery sells bagels for $0.85 each an muffins for$1.10 each the bakery hopes to earn \$400 each day from these sales. Write an equation that represents the total amount the bakery would like to earn selling bagels and muffins each day. (sorry I have no

223. ## itdoesntmatter

What do medical assistants in New York fall under? Is it the physician practice act or the nurse practice act?

224. ## algebra

points A,B,C,D,E,F with no three collinear