# Questions Asked onFebruary 22, 2017

1. ## precalculus, complex numbers

Let $\omega$ be a complex number such that $\omega^7 = 1$ and $\omega \neq 1$. Let $\alpha = \omega + \omega^2 + \omega^4$ and $\beta = \omega^3 + \omega^5 + \omega^6$. Then $\alpha$ and $\beta$ are roots of the quadratic $x^2 + px + q = 0$ for some

2. ## chemistry

Four gases were combined in a gas cylinder with these partial pressures: 3.5 atm N2, 2.8 atm O2, 0.25 atm Ar, and 0.15 atm He.What is the mole fraction of N2 in the mixture?

3. ## physics

A large box of mass M is pulled across a horizontal, frictionless surface by a horizontal rope with tension T. A small box of mass m sits on top of the large box. The coefficients of static and kinetic friction between the two boxes are μs and μk,

65. ## maths

Find two natural numbers in ratio 5:7 such that their l.c.m.is 120

66. ## Science

How are the primary pigments related to the primary colors? The primary pigments are: A. Complementary to the primary colors B. Associated with the primary colors C. Unrelated to the primary colors

67. ## biology

if you want to make 50 ml of a 1x TAE solution fro a 50X stock, how would you prepare it?

68. ## Engineering

When we drive our car at 110 feet per​ second, we measure an aerodynamic force​ (called drag) of 61 ​pounds-force that opposes the motion of the car. How much horsepower is required to overcome this​ drag?

69. ## Algebra

I do not understand this problem axbxaxb= The answer I put is ab squared. Is that correct?

70. ## biology

if you have 1.0*10^9 molecule in tube and perform a 10^-7 dilution, how many molecule will in the new tube?

71. ## chemistry

calculate the volume of hydrogen that will combine with 40 litres of oxygen to form steam at 150°C and atmospheric pressure?

72. ## Anatomy

What consequence would an over abundance of acetylcholine have both overall and at the molecular level of the muscle?

73. ## Differential equations,Calculus

So I have the following differential equation. The general solution I have is: t=k(-1/r)+c I now need to find the particular solution when t=0 and the radius (r) = 1cm. So k is a constant which is approx 3.9 (5/4pi) So for the particular solution im really

74. ## maths

a rectangular field is 15m long and 10m wide the otherrectangular field having same perimetre has its sides in the ratio 4:5 find the dimension of the second field

75. ## physics

the human body can survive a negative acceleration trauma incident if the magnitude of the acceleration is 250m/sq. s. If you are in an automobile accident with an initial velocity of 29.17 m/s and are stopped by an airbag that inflates from the dashboard,

76. ## Precal

Find the $2 \times 2$ matrix $\bold{A}$ such that $\bold{A} \begin{pmatrix} 1 \\ 0 \end{pmatrix} = \begin{pmatrix} 1 \\ 2 \end{pmatrix}$ and $\bold{A} \begin{pmatrix} 0 \\ 1 \end{pmatrix} = \begin{pmatrix} -7 \\ 4 \end{pmatrix}.$

77. ## social science

which places or countries are located at 20 degrees south and 20 degrees east?

78. ## Social Studies

which of these was a primary difference between the republic and the empire? a.More people could be citizens in the republic. b.Religious freedom was greater during the empire. c.Rome established colonies only during the empire. d.Political power was less

Felisa will carpet her rectangular living room shown below. The carpet she selected is sold by the square yard, at a cost of $32 per square yard. To the nearest dollar, how much will it cost to carpet the living room? asked by Anonymous 80. ## Introduction to small engines The distance the piston must travel from TDC to BDC is referred to as the of the engine asked by Aaron 81. ## Vocabulary Choose a vocabulaty from the list and pay attention to the tenses used. In some cases, you may have to use the opposite form or different parts of speech of the vocabulary. Vocabulary List: 1.official 2.bruise 3.atmosphere 4. pitch 5. golden snitch asked by deyond ng 82. ## math a man bought 360 eggs at rs 12 per dozen. 60 eggs were broken and 30 were rotten. find his profit and loss percent . if he sells the rest of the eggs at rs 15 per dozen. asked by abc 83. ## Maths Prove that Log9 cube divided by 4 cube = log2 asked by Gopa Dhar Choudhury 84. ## Science How do the spaces between particles affect viscosity? asked by Anonymous 85. ## math help asap For the data in the table does y vary directly with x? if it does write an equation for the dorect variation. x;y 10,15 16,24 20,30 a:yes; y=1.5x b:yes;y=2x c:yes;y=x+5 d: y does not vary directly with x if you are from connections and know any other asked by anon 86. ## Math Rod is 6feet tell he casts a 3-foot-long shadow at the Same time a tree casts an 8-foot-long shadow what is the height of the tree asked by Lizbeth 87. ## Álgebra Matt cut a circle into 8 equal sections. He drew an angle that measures the same as the total measure of 3 of the sections in the circle. What is the measure of the angle Matt drew? asked by Isabella 88. ## Math Consider a number. Greater than 2 which do you think is larger, the sum if you add a number to itself 10 times, or the product if you multiply the number by itself 10 times? Explain asked by Mia 89. ## Math If a recipe calls for 4 eggs for 8 people how many eggs would it be for 32 people asked by Angel 90. ## Chemistry the lead (II) nitrate in 25.49 ml of a 0.1338M solution reacts with all of the aluminum sulfate in 25.00 ml solution. What is the molar concentration of the aluminum sulfate in the original aluminum sulfate solution? asked by CL 91. ## Physics A stone is thrown vertically upward with the velocity of 49.0 m/s. (a) how high will it travel before it starts to fall? (b) how many seconds will it take the stone to reach the highest point? asked by Angelo 92. ## Math Find a formula for D^n_x(1/x). (The n is superscript and the x is subscript) asked by Anonymous 93. ## Physics Davi Kent caldoza is riding the Giant Drop at great America. If Davi Kent free falls for 3.6 seconds, what will be his final velocity and how far will he fall? asked by Angelo 94. ## Algebra I Scott wants to make 6 gal of a 50% sugar solution by mixing together a 60% sugar solution and pure water. How much of each solution must he use? mixture 1 @ 60% = x gallons pure water = 100% - x (??? that's my question...is that correct? or is it 0?) asked by Cale 95. ## Math Just need help to start this problem. Given f(x)=x^3+3x+1 is one to one. Without actually determining the inverse function f^-1, compute the following (show and discuss your work. f^-1(-3) asked by Mekhia 96. ## Math Derivatives Find f''(2) of function f(x)=xsin(pi/x) asked by Anon 97. ## math Find the cost of buying 4 dozen of exercise books at sh 6000 per dozen,a half dozen of pencil at sh 2050 per dozen,5 dozen rulers at sh 3600 per dozen #i need anyone to help me please# and in case someone know where i can get such the questions,i am kindly asked by kelvin 98. ## Math Use the table of values. x y -2 -5 0 -1 1 1 2 3 A. Graph the ordered pairs. B. Is the function linear? Explain. C. Write a rule for the ordered pairs in terms of x and y. D. What is the value of y when x = 10? asked by Anonymous 99. ## Math Pawan is twice as old as ruby . 3years ago he was 3 times as old as ruby .how old is pawan now asked by Sushma more 100. ## math if one sixth of a number is added to one eighth of the same number, the result is 35. find the number? asked by Sandra 101. ## math Dallas was given a discount of 10 percent of the following items: 1/1/4 cartons of exercise books @ sh 42000 per cartons,ten cartons of pens sh 22000 each.How much did he pay all together after the discount of 10 percent? *I need anyone to help me please* asked by kelvin 102. ## Book comphrension In the book thief, how is Liesel Meminger affected by the war? asked by Andrea 103. ## maths using a ruler and a pair of compass only. Construct ABC such that angle ABC=90°,AB=5cm and BC=6cm.Measure AC asked by Helena 104. ## Calculus Kayla claims that she can find an approximate value for sin 1o without using a machine to do any computations. Explain or show how she can do this (Hint: if you choose to explain the process, please be very specific. If you choose to show how it is done, asked by Demi 105. ## Algebra given two consecutive integers. The sum of three times the first integer and four times the second integer is 95. Find the integers asked by MOnica 106. ## Biology A life cycle in which organisms switch back and forth between diplid and haplid stages? asked by Anonymous 107. ## American Government Why is the right to petition important? a. Citizens do not have many other ways to make their voices hear in a democratic country b. It is the preferred way for citizens to have their voices heard in an absolute government c. It is an important option for asked by Rox 108. ## Math/Calculus Find the equation of the tangent line to the given equation at the indicated point a) y^2=cos(5x-3y) at ((2pi+3)/5, 1) b) x^2+x^2y+4=0 at (2,-2) asked by Anonymous 109. ## Math Graph y = -2X an y = -Xsquared what points do the graphs have in common? How are they different? asked by Kaity Bear 110. ## ss Where was the declaration of independence signed? asked by Maya 111. ## math the sex of to domain species is unknown but they each have a probabilty of X and -5 what does x equal and waht is the domain species? Plz someone help me dont give me the answer just plz explain the procees of theis to me i have no clue where ot start asked by carry on 112. ## keshavareddy schoolphysics a body is released from the top of the tower Hmetres high. It takes t seconds to reach the ground .where is the body t/2 second after release asked by pranitha 113. ## maths two poles 6m and 15m tall are 20 m apart a wire is attached to the top of each pole and is also staked to the ground some where b/n two poles where should be the wire be staked so that the minimum amount of wire be used? asked by Dd 114. ## Social Studies Why were Whig Congressman angry about the war? What did they accuse Polk of? Plz help asked by tatiana 115. ## Math Can someone explain how to solve this equation using each step? I'm confused. (2^8⋅5^−5⋅19^0)^−2⋅(5^-2/ 2^3)^4⋅2^28 asked by CCB 116. ## value What are the reasons for olympic games to be largest sport events? asked by value 117. ## Educational Technology why is it important to take responsibility for your online publication (1 point) asked by Anonymous 118. ## geometry A tourist is standing in the center of a roof 1000 feet skyscraper wants to a photo of the top of the adjacent skyscraoer that is 1500 feet tall what is the angle of elevation from the tourist to the top of the skyscraper to nearest yenth asked by sheila 119. ## ss 9. The economies of the United States and Canada are (2 points) very different. strongly linked. dependent on tourism. exactly the same. asked by Anonymous 120. ## Math How many cubes with 1/4-inch side lengths will fit in a 87 1/2 if they are packed with no gaps? asked by Cindy 121. ## Science Describe th flow of blood in the human body, including through each of the four chambers of the heart. Explain how the blood changes as it moves on locations in the body i have been stuck on this for almost 3o minutes i need help :) asked by Bill Shrum 122. ## Math Hello everyone. I have a math problem that I need a bit of help with please. Ava wants to ride the Rip Ride Rocket roller coaster at Universal Studios. She knows that she has to be at least 40 inches tall. If h represents the height of the children that asked by Patrick 123. ## Algebra 2. You have$80 and your brother has $275 dollars. You save$10 of your allowance each week. Your brother spends his allowance plus $15 each week. A. Write an equation to model this. B. How long before you have as much money as your brother? C. How much asked by Anonymous 124. ## Math How many cubes with 1/4-foot side lengths will fit inside 77ft3 if they are packed with no gaps asked by Cindy 125. ## SS After the Civil War, many settlers who migrated likely went? 1) to Canada 2) to the South 3) to the West 4) to Maine asked by Jaden 126. ## Literature Hi! So I need help describing someone with heterochromia, for a third-point-of-view fictional story. Thanks for your help! asked by Vivian 127. ## Math The most Gabriel has ever earned delivering newspapers is$43 in one day. Write an inequality showing the amount Gabriel earns delivering newspapers.

Bob currently has $1,000 in a saving account he saves$25 per month he saves the same amount each month and does not take any money out of the account and how many months will boris have 1,450

129. ## social studies

In which of the following ways did the 1920s wealth gap contribute to the start of the Great Depression. A. The wealth gap led to a decline in stock investment during the 1920s B. A concentration of wealth led to less spending across the economy C. Many of

133. ## physics

The pitcher throws a pitch from the mound toward home plate 18.4m away. The ball is released horizontally from a height of 1.8m with a velocity of 32m/s. Find the height above ground when it gets there.

134. ## Algebra

Not sure how to do this problem need a little help at least to start. If h(x) = 1/(x+3)^3 then determine f(x) and g(x) such that h(x) = (f of g)(x).

135. ## math

you want to use a square section of your yard for a garden. You have at most 52 feet of fencing to surround the garden. write and solve an inequality to represent the possible lengths of each side of the garden. Math - Dylan, Tuesday, March

136. ## Chemistry

Find the pH of a buffer solution with equimolar concentrations of: HCOOH and NaCOOH (Ka = 3.5 x 10-4 for HCOOH)a

137. ## Biology

What is the reaction that creates polysaccharides? What covalent bond forms between 2 sugars? Which is the main group involved in this bond formation? I've been reading my book for hours and I can't find the answer to this

138. ## Chemistry

Find the ratio of the volumes of NaC3H5O3 soloution to HC3H5O3 (lactic acid) required to prepare a buffer with a pH of 3.90. the solutions are equal in molarity. Ka = 1.4 x 10-4 for HC3H5O3. ratio = ________ mL of NaC3H5O3 per mL of HC3H5O3

139. ## science

1. When Mendeleyev arranged the elements into the periodic table, he found that elements with fell into groups on the table A. the same mass B. similar size C. Similar properties D. The same color 2. Every element has its own atomic number. The atomic