# Questions Asked onJanuary 29, 2017

1. ## english

Identify the compoundâ€‹ verb: On theâ€‹ weekends, I exercise and do things with friends. A. â€‹exercise, do things B. â€‹exercise, do C, on the weekends

2. ## Math

what is the sqaure root of -3/2*81

3. ## English

The following sentences lack necessary end marks, commas, semicolons, and colons. Insert the correct punctuation in each sentence. 1. After you make the salad please set the table Jorge 2. What a great time we had at the beach 3. No you may not stay up

4. ## math2

When s is measured in meters and t is measured in seconds, find the velocity at t = 2 of the following a. s = t^2 + 3t b. s = t^3 - 3t^2 c. s = squareroot t + 2 Help plz

5. ## Math

The sides of triangle are in ratio 5:3:4 and it's perimeter is 180m find altitude of the triangle corresponding to its largest side

6. ## math

a school has 720 pupils. one day 36 pupils were absent, what fraction represented those who are present?

7. ## solar science physics

On the left-hand side of the figure below a III-V triple junction solar cell is shown. On the right-hand side, the J-V curves of the individual component cells and the multi-junction solar cell are shown. Which junction corresponds to sub cell 3?

8. ## so

Which junction corresponds to sub cell 3? Sub cell based on Ge. Sub cell based on GaAs. Sub cell based on GaInP. Sub cell based on GaInAs.

9. ## statistics

For a sample of 50 days, George Murnen made an average of 5.02 calls per day. At the .05 significance level, is there a difference in the mean number of calls per day between the two employees? What is the p-value?

asked by DEBORAH SLIGH
10. ## statistics

. At the .05 significance level, is there a difference in the mean number of calls per day between the two employees? What is the p-value?

asked by DEBORAH SLIGH
11. ## science

What is the balanced molecular equation for titration of oxalic acid?

12. ## English

Most of the following sentences lack at least one period, question mark, exclamation point, comma, semicolon, or colon. Add the correct punctuation where it is needed. I have added punctuation in second set of sentences. 1. African American author Maya

13. ## solar science physics

Which of the following statements is NOT true about solar inverters? A stand-alone inverter is supposed to work as an AC voltage source for a specified range of AC loads. An ideal grid-tied inverter has its operational voltage and frequency synchronized

14. ## solar science physics

Consider a lead-acid battery with 500 Ah capacity and a rated voltage of 12 V. What is the total capacity of energy in watt-hours that can be stored in the battery?

15. ## Precalculus

Let $\mathcal{G}$ be the graph of the parametric equations \begin{align*} x &= \cos(4t),\\ y &= \sin(6t). \end{align*}What is the length of the smallest interval $I$ such that the graph of these equations for all $t\in I$ produces the entire graph

16. ## Math

Four subtracted from 3 times a number is 29. Find the number

17. ## math

use the method of substitution to solve the following pairs of simultaneous equation. 2m+n=0,m+2n=3

18. ## Science

Starting from rest an airplane moves with a constant acceleration of 2m/s for 30 seconds before it takes off A. How far does it travel down the runway before it takes off ? B. What's it's final velocity ?

19. ## math

The sum of ages of Sam ang thomas is 27 years. Seven years ago, Toma's was three years more than one fourth as old as Sam. Find their present ages

20. ## Math

The third term of an A.P is 20, the fourteenth term is 64. Find the first term, the common difference and the nth term

21. ## Maths

A store marks up the price of a lounge by 80%. What percentage discount would bring the price of the lounge suite back to its original price?

22. ## Mathematics

Of the 82 pupils in grade 9, 73 take mathematics 56 take science, all those who take science take mathematics. Show the information on the venn diagram. How many take neither mathematics nor science?

asked by Philip Chiwala
23. ## Science

If a tree lost all its leaves, is it dead?

24. ## Math

A plane flies from city x to city y against the wind in 8 hours and flies back from city y to city x with the wind in 5 hours. If the speed of the wind is 650 mph, find the wind speed in mph?

25. ## Math

From 1980 to 1990 the population of London increased by 6%. From 1990 to 2000, the population of the city decrease by 3%. What was the overall percentage change in the population of London from 1980 to 2000?

26. ## calculus

Let g(x)={x^2-x-2 if x is not equal to 1 {0 if x=1

27. ## calculus

Define h(x)={x^2 if x>=-1 {ax+b if x

28. ## math

evaluate without using L'Hopital theorem the following limit lim x-->0 [(sin(x)-x)/(x-tan(x))] the answer is 0.5 but I want to know the steps to calculate such a problem

29. ## calculus

define f(x)={x+a if x>2 {-1 if x=2 {ax+b if x

30. ## math

evaluate without using L'Hopital theorem the following limit lim x-->0 [(sin(x)-x)/(x-tan(x))] the answer is 0.5 but I want to know the steps to calculate such a problem

31. ## Maths

The length of a chord of a circle of radius 10 cm is 12 cm. Some the distance of the chord from the centre of the circle.

32. ## Chemistry

Given Ka values of 5.76×10^-10 & 4.8×10^-10, for NH4+ anf HCN.what is the equilibrium constant for following reaction? NH4+ + CN- >< NH3 + HCN

33. ## Science

A battery of 3cells in series each of emf 2v and internal resistance0.5 is conected to a 2resistor in series with a par

asked by Monday Japheth, SALAMA High School, Physics
34. ## physics

Uranium 235 has 92 protons in its atoms. Calculate the number of neutrons in this atom

asked by Sakshhi Siingh
35. ## Physics

state the finctions of double wall,silver wall and cork sttoper -

36. ## des school

the volume of a cylinder 288picm3 the base radius is 8 cm find its tsa leave the answer in terms of

37. ## Physics

determine the magnitude and direction of the net force acting on q0 where q0=1uC ,q1=-1uC,q2=2uC and q3=-4

57. ## Math

Solve the Identity cot (x)/ (csc(x)-1)= (csc(x)+1)/cot (x)

58. ## American government

Why do you think we are not governed by the Articles today? I think we are not governed by the Articles today because it was too weak of a government to be able to force any laws that put into place. Also, states needed protection from other countries and

59. ## Math

(1+tan(x))* (1+cot(-x))

60. ## Math

Simplify the follow)ing to the simplest form (tan(x) +cot(x))/ (tan(x)*cot(x))

61. ## math

On a test you answered six 5-point questions and eight 2-point questions. You earned 92% of the possible points. How many points is the test worth?

62. ## Math

cos(x)/(1-tan(x)) + (sin (x))* cos(x))/ sin (x)-cos(x))

63. ## Physics

A cannon ball is fired horizontally from a cannon that is 40.7m above the ground. The initial velocity of the cannon ball is 234m/s. How much time does the cannon ball spend in the air?

64. ## sociology

Sociologist argue that unlike scientifice knownledge common sense conclusion are

asked by sandra kirby
65. ## Math

Seth has three more than twice as many baseball cards as Aaron. Together they have 33 baseball cards. How many cards does Seth have? Answer: I dont understand please help

66. ## English

Please please please check my answers and explain to me why they are right or wrong!!! 24.) Choose the correct voice of the underlined verb. (1 point) The pitcher THREW the ball to the catcher. a.) active** b.) passive 25.) Choose the correct voice of the

67. ## linear algebra

Hello, how can I proof the next theorem? I have a linear transformation T(X) that can be express as T(X)=AX and A is an orthogonal matrix, then ||T (X)||=||X|| , I was doing this: ||T (X)||=sqrt() But I don't know what to do with the orthogonal matrix..

68. ## Math

one track coach wants his athletes to race 8 miles around a track to measure how fast each person can run if the track is 2/3 of a mile around. How many laps around the track will the athletes have to run to complete the race?

69. ## English

1.) Read the following lines from the poem Africa. "Impetuous son that tree young and strong. that tree there in splendid loveliness amidst white and faded flowers. that is Africa your Africa. that grows again patiently obstinately. and its fruit gradually

70. ## Algebra

Last year the population of Spoon Forks grew from 1250 to 1300. If the population of the town grows by the same percent this year, what will the population be?

71. ## Geology

Which of the following is a mineral?

72. ## English

.) Read the following sentences from "The Pin". "That all changed when my family moved. My new school is three times bigger than my old school. At first, no one here knew me. The kids were polite, but they did not treat me like a good friend. For a few

73. ## English

Read the following line from "The Pin": I felt like a character in an old Jimmy Stewart movie. The reference to "Jimmy Stewart" in this line is most likely intended as a (an) _________ allusion. a.) biblical b.) literary** c.) historical d.) mythological I

74. ## verbal reasoning

write the word of four letters which could go after each word in this line losing winning in out be thank you if you help. if you dont help its OK at least you got my question

75. ## English

The following sentences lack necessary end marks, commas, semicolons, and colons. Insert the correct punctuation in each sentence. 1. In the final most exciting quarter of the game Brian kicked two field goals 2. That price however does not include the

76. ## Physics

A boy kicks a rock off a cliff with a speed of 15.5m/s at an angle of 53.5° above the horizontal. The rock hits the ground 5.37s after it was kicked. How high is the cliff? I found the height of the cliff which is 7.45*10^1 m. What is the speed of the

77. ## verbal reasoning

unscramble this anagram to make one word with the meaning given in brackets. GREEN MEAT (holding the same opinion) thank you to all who help:D

78. ## English

Most of the following sentences lack at least one period, question mark, exclamation point, comma, semicolon, or colon. If a sentence is already correct, write C. 1. When the hurricane began to tum toward land the governor issued an evacuation order for

79. ## Probability, Stats

For every 1000 batteries produced by a manufacturer 15 are defective. What is the probability that 100 randomly chosen batteries will have exactly 2 defective batteries?

80. ## verbal reasoning

which letter of the alphabet makes BERT a hat? write the new word in brackets and write the letter thank you helpers:D

81. ## math

I need help here log2^(3) + log4^(7)

82. ## science

n a cross between homozygous red-eyed "Drosophila" females and white-eyed males,? A. All the offspring will have white eyes or B. Ditto to A.> red eyes or C The male offspring will have red eyes and female offspring white eyes. I thin the answer is B or A

83. ## math

Jacky is cutting 4 yards of fabric into 7 pieces of equal length. Which expression represents the fraction of a yard each piece will be? 7-4 4-7 7/4 4/7

84. ## Physics

How much force does it take to push an 80 lb. steel cart on wheels?

85. ## Math

what is 2x+2=4?

86. ## Chemistry

The vapor pressure of pure water at 30C is 31.8Torr. What is the vapor pressure of a solution of NaCl dissolved in water when the mole fraction of NaCl is 0.111? I am wondering if this would be correct. 0.11*31.8= 3.5 Torr Is there another way to solve

87. ## La state history

in 3-5 sentences describe the apportionment system for state legislative districts I cant seem to think of any please help. Ms.Sue

88. ## mathematics

a(x+b)=c by making x the subject of the formula. ax+ab=c divide both sides by an a(x+b)÷ab=c ÷ a+b ax=c/a+b

asked by Rukayya Junaid
89. ## calculus

I have a definition lim theta approaching 0 sin theta/theta = 1 so show if the limit x approaching 0 sin2x/5=2/5

90. ## math

the aquarium's height is 11 inches, width is 8 inches, and length is 20 inches, he wants to replace the water. how much water does the aquarium hold?

91. ## Physics

On the map, let the +x-axis point east and the +y-axis north. A)An airplane flies at 990 km/h northwestward direction (i.e., midway between north and west). Find the components of its velocity. B)Repeat for the case when the plane flies due south at the

92. ## Physics

You drive 109 km/h east for 31 min , then 82 km/h north for 42 min . Let the +x-axis point east and the +y-axis north. A)Find your average velocity for the entire trip. B)Find your average speed for the entire trip. You should probably do part b first.

93. ## Physics

A baseball hit just above the ground leaves the bat at 27 m/s at 45∘ above the horizontal. A)How far away does the ball strike the ground? B)How much time is the ball in the air? C)What is its maximum height? Find the time for the ball to go the

94. ## Science

A white eyed male Drosophila is crossed to a red eyed female all the resulting progeny have red eyes. A. This shows that eye colour is sex linked. B. This shows that eyes are recessive to white eyes. C. Both of the above. D. None of the above I think it is

95. ## english

what is the name of scrooges business partner who is dead

asked by mugh hungus
96. ## math

One leg of a right triangle is one less than twice the other. The area of the triangle is 18 square feet. What is the length of the 3rd side of the triangle? Solve by factoring. A= 1/2 (b)(h) 18= 1/2 (x)(2x-1)

97. ## 7th G science

What is/are the main factor(s) that determine(s) the height of a plant (genetics, environment, or both)? Explain your answer. I think that only genetics play a role but I am not sure.

asked by softball lover
98. ## Maths

There are m boys and 12 girls in a class what is the probability of selecting of random 1 a girl 2 a boy from class

99. ## math

An ice cream van sells 3 different ice-cream flavours with 4 different toppings. How many different choices can be made using only one of the ice-cream flavours and only one of the toppings?

100. ## economics

Indicate if each newspaper headline below deals with a microeconomics (micro) or a macroeconomics (macro) issue. Pepsi to Introduce a New flavor - micro Russia Devalues Currency - macro Red Cross Needs Blood- micro Microsoft Still Tied-Up in Legal battle -

101. ## Math

I am stuck on the question Jeremy collected nickels for one week he is making stacks of his nickels to determine how many he has the thickness of one nickel is 1/6 inch what is the combined height of 3 nickels 2 nickels and 1 nickel help me I don't get

102. ## Physics

Two geological field teams are working in a remote area. A global positioning system (GPS) tracker at their base camp shows the location of the first team as 38 km away, 19deg north of west, and the second team as 28.7 km away, 35deg east of north. When

103. ## math

So a moped travels at 40km/h for part of a trip and 10km/h for the remainder. If it takes 5.75 hours to travels 185km, how far did it travel at each speed?

104. ## Algebra

Can you please help me with this math problem: 5 6 2 9 12 3 (4X Y Z) X (5X Y Z) The numbers at the top are exponents.thank you

105. ## English

Most of the following sentences lack at least one period, question mark, exclamation point, comma, semicolon, or colon. Add the correct punctuation where it is needed 1. I looked for my keys in the kitchen on the porch and under the bed but still couldn't

106. ## Need Help

Which is the intransitive verb? The judge who presided over that controversial case last year now seeks another term in the upcoming election "Seeks" is the intransitive verb

asked by language arts
107. ## Math

Find the smallest integer value of N such that f(x)=O(x^N). a) f(x) = x^7 - 150x^6 + 3x^3 + 111 b) f(x) = (x^3 + 2x^2) / (x^4 + x^2 + 1) c) f(x) = ⌈x⌉ d) f(x) = ⌊x⌋

108. ## Physics

A dram of mass 100kg is rolled into the deck of long 1.5m above a horizontally floor using a plank 4m long.calculate the work done against gravity during the process [Take g=10ms'2]

asked by Yegh margaret
109. ## Algebra

Can you please help with this problem: my previous post didn't come out correctly: (4X5Y6Z)2 x (5X9Y12Z)3 The number after the letter is an exponent....4X to the fifth power Thank you

110. ## Chemistry

Compunds formed by NH4+ and NO3-

111. ## mico vs. macro

Indicate if each newspaper headline below deals with a microeconomics (micro) or a macroeconomics (macro) issue. Pepsi to Introduce a New flavor - micro Russia Devalues Currency - macro Red Cross Needs Blood- micro Microsoft Still Tied-Up in Legal battle -

112. ## Algebra

Please advise if this answer is correct: -3a8^b2^c3^ (5abc9^ -11a^b4^c6^) -3a8^b2^c3^ (-6ab3^c3^) 18a9^b5^c6^ - is this answer correct? Thank you

113. ## Spanish

Hello, Can someone please help me edit the answers to my reading response questions for grammatical correctness. It would be greatly appreciated! 1. ¿Cuál es el ambiente de este cuento? --Answer below: El ambiente de este cuento es de una el camino a

114. ## chemistry

From each pair of substances below, choose the one with the higher molar So, at 298 K a) Hg (s), Hg (l) d) C2H6 (g), C2H4 (g) b) HI (g), HCl (g) e) H2 (1 atm), H2 (2 atm), 1 mol at 298 K c) NH3 (g), Ne (g) f) NaCl(s), NaCl (aq)

115. ## physics

A piece of copper ball of mass 20g at 200°c is placed in a copper calorimeter of mass 60g containing 50g of water at 30°c ignoring heat losses.calculate the final steady temperature of mixture.(specific heat capacity of water=4.2jg-1k-1)

116. ## algebra

what is the inverse of the given relation? for the function f(x)=xx-2,find (fof-1)(10)

135. ## Physical sci

The Density of aluminum is 2.70 g/cm3. What volume does 2000 g occupy?

136. ## Earth Science

What are the maximum and minimum dimensions (the size range) for the following particle sizes? a) cobble: b) pebble: c) sand: PLEASE HELP

137. ## biology

what role doescarbon dioxide play in plant processes

138. ## Math

The sum of 23 and Hans height is 54

139. ## Chemistry 112

Can rate of law be a decimal??

140. ## English

Insert colons as needed. 1. Uncle Jerry likes the following authors Alex Haley, Mark Twain, and Willa Cather. 2. Remember these tips when you drive courtesy, caution, and judgment. 1. Uncle Jerry likes the following authors: Alex Haley, Mark Twain, and

141. ## chemistry

Calculate ∆S universe for the process H2O (s) → H2O (l) given that ∆Hfusion = 6.02 kJ/mol and ∆S system = 22.1 J/K mol . Remember that ∆S surrounding = -∆Hsystem / T. a) -20oC b) 0oC c) 20oC

142. ## Chemistry

How many liters would 1.000g of helium gas occupy at STP?

143. ## Math

Six groups of students sell 162balloons at the school carnival there are three students in each group if student sells the same number of balloons how many balloons does each to student sell

144. ## Trigonometry

A plane at an altitude of 12,000 feet finds the angle of depression for a building ahead of the plane to be 10.4 degrees. With the building still straight ahead, two minutes later the angle of depression is 25.6 degrees. Find of the plane relative to the

145. ## Chemistry 112

Can someone please explain to me how to calculate reaction order with respect to something? I've read this in my textbook, and I watched videos on YouTube, but I still don't understand. Please help.

146. ## physics

A car traveling at 100 km/h strikes a tree. The front end of the car compresses and the driver comes to rest after traveling 0.85 m . What was the magnitude of the average acceleration of the driver during the collision? Express the answer in terms of

147. ## English

Write the correct form of the word cliche. By now, the "damsel in distress" plot is not only ______, but outdated. Answer: cliched

148. ## Calculus

I am having trouble with this question and I am unsure how to solve it... True or False (with justification) The function sin(x) if x ≤ 0 f(x) = 1+cos(x) if x>0 has a jump discontinuity at x = 0.

149. ## Algebra2

let f (x)=x-3,and g(x)=x^2 find f(g)(4)

150. ## English

Express how the device below and structure helps acheive the purpose of chapter 4. The book is called Narrative Of The Life Of Fredrick Douglass. I just need to write a paragraph. given: brutality of slavery device: diction and structure All i know is for

151. ## Chrmisty

Find the pH at each of the following points in the titration of 25 ml of 3.0M HF with 0.3 M NaOH. The Ka value is 6.6x10-4. After adding 25 ml of 0.3M NaOH

152. ## chemistry

A solution of 25.0mL of 0.10mol/L hydroiodic acid is titrated with 0.10mol/L ammonia.Determine the pH at equivalence.

153. ## applied calculus

From a height of 25 meters a ball is thrown vertically upwards at a velocity of 5 meters per second. a.What time in seconds will the ball reach its maximum height? b.What is its maximum height? c.When will the ball strike the ground? d.What will be the

154. ## probability

a teacher holds 40 class cards of 14 girls and 26 boys. shes huffles the cards and drawn one. a. what is the probability that the card drawn is a girl's card? b. what is the probability that the card belongs to a boy? c. what is the probability that the