Questions Asked on
April 26, 2016

algebra
Please help!!! Ray and Kelsey have summer internships at an engineering firm. As part of their internship, they get to assist in the planning of a brand new roller coaster. For this assignment, you help Ray and Kelsey as they tackle the math behind some
asked by Legend 
Language Arts
In Act 1, Scene 5, the young Scrooge’s beloved ends their relationship. She says, “Have I not seen your nobler aspirations fall off one by one, until the master—passion, Gain, engrosses you?”From this dialogue, what can you conclude is her reason
asked by Jonah 
physics
A thin rod has a length of 0.25 m and rotates in a circle on a frictionless tabletop. The axis is perpendicular to the length of the rod at one of its ends. The rod has an angular velocity of 0.33 rad/s and a moment of inertia of 1.40 103 kg · m2. A bug
asked by mnjk 
math
Maria has the following scores on exams in her social studies class 86, 75, 97, 58, 94, and 58 A. find the mean, median, and mode of the scores. B. Should Maria's social studies teacher use the mean, median, or mode of the exam scores to convince Maria
asked by FluttershyK22 
life orientation
1.identify your human rights violation and explain in an introductory paragraph why you choose the specific human rights violation 2.describe the three human rights violations and give at least two examples of such violations you found in your research
asked by sekgala lunkie 
Mathprobabilities
The table below shows the number of deaths in the U.S. in a year due to a variety of causes. For these questions, assume these values are not changing from year to year, and that the population of the United States is 312 million people. Cause Deaths
asked by Jeff 
Algebra Help me Please
Someone please help me with this!!! Ray and Kelsey have summer internships at an engineering firm. As part of their internship, they get to assist in the planning of a brand new roller coaster. For this assignment, you help Ray and Kelsey as they tackle
asked by Riley 
l.o
suggest six recommendation on how to address xenophobia in south africa
asked by masibulele 
Chemistry
100ml of h2s04 solution having molarity 1M and density 1.5g/ml is mixed with 400ml of water. Calculate final molarity of h2s04 solution if final density 1.25g/ml. Ans is 0.227M Who help me thanks a lot
asked by Mohit 
Spanish
Which indigenous group is believed to have inhabited la Republica Dominicana before the arrival of the Spanish to the New world? a. Tainos*** b. Aztecs c. Zapotecs d. Incas
asked by Kaai97 
Language Arts
whose attitude toward scrooge is the most severe
asked by nicky 
spanish
what of the following is not true about palacio nacional 1. it contains a large mural that shows the history of mexico 2. it is located in teotihuacan 3. it is where the mexican president office is located
asked by Anonymous 
english
What does the author achieve by mixing exact and approximate numbers in "A Contribution to Statistics?" can someone explain what they want me to write I'm stuck.
asked by cassie 
Geometry
Can someone help me with lesson 10 unit 4 geometry test? 8th grade 1. Name a pair of vertical angles 2 and 5 2 and 6 3 and 4 5 and 6 2 if M 1 = 43 what is M 4 53 43 37** 27 If M 1 = 55 what a m 5 55 40 35 25**
asked by Anonymous 
Science
if you had a real thermometer that was accurate how could you modify your experimental thermometer to read actual temperatures
asked by #FreeGucci 
Science
An organisms particular role in its habitat is or when and how it survives is called its what? A.carrying capacity
asked by Senpai were all gunna die 
ALGORITHM
Write an algorithm and flowchart that will accept score of 30 student in a class calculate and print the average mark in basic program.
asked by Musa Bilya 
math
You are surveying students to find out their opinion of the quality of food served the school cafeteria. You decide to poll only those students who buy hot lunch on a particular day. Is your sample random? Explain? Can you explain me this im not sure if it
asked by FluttershyK22 
Statistics
Listed below are body temperatures for four subjects measured at two different times in a day. Body Temperature (°𝐹) 𝑎𝑡 6 𝑎𝑚: 98.0,97.0,98.6,97.4 Body Temperature (°𝐹) 𝑎𝑡 6 𝑝𝑚: 98.0,97.6,98.8,98.0 Assume the sample data are
asked by Nick 
Social Studies (please check Ms. Sue)
Please check this. Thanks! 1. After World War II, what type of laws did Congress concentrate on passing? a. civil rights*** b. homeland defense c. international alliances d. taxes 2. Which of the following tactics was NOT used by civil rights groups? a.
asked by SpitFireRedHead 
math
Explain how to write a function rule from the table below . Then write a function rule. table X } 2 , 4 , 6 Y } 1 , 0 , 1
asked by abstract 
life orientation
describe xenophobia taking place in a your community and give your own position in this isssue
asked by shawty 
science (URGENT!! CORRECT PLEASE))
(1) The inputs for cellular respiration are: A) Nutrients and carbon dioxide B) Energy and carbon dioxide C) Nutrients and oxygen D) Energy and oxygen ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ My Answer: B ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ (2) The outputs for cellular
asked by Yuno Gasai 
Calculus
A spherical balloon is being inflated and the radius of the balloon is increasing at a rate of 2cm/min. At what rates are the volume and surface area of the balloon increasing when the radius is 5cm?
asked by ChrismB 
Anyone Help ASAP!!
During the Civil War, all of the battles and most of the population of Florida were' A.) in the interior of the state B.) in the north of the state C.) in the south of the D.) on the coasts of the state Everyone in family disagrees. My mom says B. I say D.
asked by Monica 
Maths
One half of a number added to itself is equal to 6
asked by Sifiso 
Language Arts
which of the following best explains how the author's use of flashback functions within the plot of the story? Im in connexus plz help
asked by help 
Social Studies
How was the Northern Renaissance similar to the Italian Renaissance? How was it different? Can someone help me or give me a link to something to help please.
asked by lifeisgreat 
math
The function rule C=10n+26 relates the number of people n who attend a small concert to cost in dollars C of the concert. Make a table of the input/output pairs to show the cost if 27, 39, and 43 people attend
asked by abstract 
Spanish
Las ninas _____ a montar a caballo. a. aprendimos b. aprendiste c. aprendieron*** d. aprendio
asked by Kaai97 
Math
Jamil spends 1/3 of his pocket money on sweets. He saves 1/9 of his pocket money. What fraction of his pocket money is left?
asked by Mariya 
science
Calculate the emf of the cell CRCr3+(0.1M)Fe2+(0.1M)Fe Given, E°Cr3+CR = 0.75v E°Fe2+Fe = 0.45v Cell reactn 2Cr(s)+3Fe2+(aq) > 2Cr3+(aq)+3Fe(s)
asked by Rasilu 
Computer
Write an algorithm and flowchart that will accept 30 students calculate and print the average mark in basic program.
asked by Musa Bilya 
math
How many lines of symmetry does this figure have? Draw as many as possible.
asked by renita 
math
Jenny must sit four papers for an exam. The mean of the first three papers Jenny has sat is 72%. (a)If she wants to get an overall mean of at least 75%,what is the lowest mark she can get in her fourth paper? (b) What is the highest possible mean she can
asked by P 
math
The mass of a box with 6 tennis balls is 2 kg 40 g. The same box with 10 tennis balls is 3 kg 160 g. What is the mass of the empty box?
asked by teresa 
Science
2.)you had a real thermometer that was accurate, how could you modify your experimental thermometer to read actual temperatures?
asked by #FreeGucci 
Math
Find the minimum value of C = 4x  3y using the following constraints. constraints to get the vertices. Plug the vertices into the objective function. Remember graph the
asked by pandagang 
physics
A splash is heard 3.12s after a stone is dropped into a well 45m deep.the speed of sound in air is(g=10m/s2)
asked by payal 
American history
How has globalization affected jobs in industrialized nations? A. Many manufacturing jobs have moved to less developed nations. B. Most of the jobs in service industries have moved to less developed nations. C. Pay for factory jobs has increased sharply as
asked by quick help needed 
trig
A car is traveling at 34 miles per hour. If its tires have a diameter of 14 inches, how fast are the car’s tires turning? Express the answer in revolutions per minute and round to two decimal places.
asked by EBB 
math
What is 7 more than five times the number 9 divided by 15?
asked by preamatureshot ps3 name:] 
Chemistry
What is the internal energy if system absorbs 100J of heat and does 50J of work on the surrounding?
asked by Ramsha 
english
the most dangerous game is mostly about
asked by colton 
science
Calculate the EMF of the cell CRCr3+(0.1M)Fe2+(0.1M)Fe Cell reaction 2Cr(s)+3Fe2+(aq)>2Cr3+(aq)+3Fe(s)
asked by Rasilu 
Biology
1. Fill in the five levels of human body organization. AND 2. Place the five examples below in order from largest to smallest: You, Stomach, Epithelial Tissue, Digestive System, Parietal cells. ~~~~~~~ I don't know the first one but I think that the second
asked by Astral Tellurian 
trig
A car is traveling at 34 miles per hour. If its tires have a diameter of 14 inches, how fast are the car’s tires turning? Express the answer in revolutions per minute and round to two decimal places.
asked by EBB 
probabilities
A multiple choice test has 16 questions. Each question has 4 possible answers with only one is correct. Assume that all questions are answered and the probability to answer any question correctly is 0.25. Let X be the number of questions answered correctly
asked by hassan 
math
A body is thrown vertically upward from the ground with an initial velocity of 96 ft/sec. Find the maximum height attain by the body
asked by gillian 
English 4
In Sonnet 106, the speaker claims that earlier praise has prefigured, or _____, his love. A. molded**** B. created C. destroyed D. suggested
asked by CarpeDiem 
scte
a 90 volt Hz source is connected to 0.1 Henry inductor.what is the current through the inductor?
asked by danny 
math
Nick estimated that 5/8 + 4/7 is about 2.Explain how you know his estimate is not reasonable.
asked by Kitt 
math
A researcher tagged 40 giant turtles in 2008. In 2009, she returned and captured 50 turtles, 16 of which were tagged. In 2010, she returned again and captured 30 turtles, 8 of which were tagged. A. Use a proportion to estimate the turtle population for
asked by FluttershyK22 
chemistry
The combustion of 1.210 g of a mixture of CH4 and C2H6 gives 3.372 g of CO2 I have to determine the composition of the mixture (mastic %) and molar fraction of CH4 in the mixture CH4 + C2H6: CO2 + 2H2O C2H6 + O2: CO2 + H2O CH4 + C2H6 + 02: CO2 +H2O Thanks
asked by Ele 
Math
A box can hold 175 cubic inches of cereal. Of the box is 7 inches long and 2.5 inches wide, how talk is it ?
asked by Kristen 
Literature
This quote from “I Hear America Singing” by Walt Whitman shows the poem is what kind? A. Lyric B. Haiku C. Couplet D. Sonnet
asked by sam 
American history
Use the quotation and your knowledge of social studies to answer the following question. “Finally, in our progress toward a resumption of work we require two safeguards against a return of the evils of the old order; there must be a strict supervision of
asked by fast help needed 
Chemistry
In the production of carbon disulfide (CS2), carbon (C) and sulfur dioxide (SO2) are reacted. If 8.00 g of sulfur dioxide reacts, how many moles of carbon dioxide are produced?
asked by Tammy 
Literature
Is the following an example of a simile, metaphor, paradox, or personification? The younger she dresses, the older she looks. A. paradox B. simile C. metaphor D. personification
asked by tim 
American history
Instead of using investments as a tool of U.S. foreign policy, Wilson’s “moral diplomacy” hoped to promote U.S. interests by A. supporting the social and national wellbeing of Latin American nations. B. establishing religious leaders in positions of
asked by quick help needed 
Math
The ordered pairs (2,21) and (5,45) are solutions to which of the following equations? y = 8x  5 y = 8x + 5
asked by Steve 
algebra 2
So the dead line for my class is coming up. And I really need help for these questions! 2. Elaine shoots an arrow upward at a speed of 32 feet per second from a bridge that is 28 feet high. The height of the arrow is given by the function h(t) = 16t2+32t
asked by Anonymous 
Chemistry
What volume of coffee (pH=5.0) would be required to have .25 moles of H3O+ ions? (must be two steps)
asked by Luna 
math
my son informed me that a comic book I purchased for 10 cents in 1948 is worth $85. today what has been the average annual compound rate of return on that valuable asset
asked by Stephanie 
Social Studies
1) Why has relying on one crop or resource presented an economic problem for many Latin American nations? How have these nations been trying to solve this problem? 2) How might the cultures of Latin America be different if the Spanish and Portuguese had
asked by Helppp!!!! 
geometry
A fish in an aquarium is 4 feet long. A scale model of the fish is 2 inches long. What is the scale factor?
asked by Johana 
AP Physics
A car with a mass of 1200 kg kg starts from rest and accelerates to a speed of 12 m/s in 12.2 s. Assume that the force of resistance remains constant at 328 N during this time. What is the average power developed by the car’s engine? Answer in units of
asked by Anonymous 
History
All of the following are examples of how geographical boundaries can limit cultural interaction except rivers deserts mountains oceans I think its A. since rivers are the easiest boundraies to pass through
asked by Jiskha 
maths
Find the nth term of this sequence 1,3,9,27,81
asked by Anonymous 
math
During a game, a basketball team scored 38 points worth of twopointers, 33 points worth of threepointers, and 8 points worth of free throws. How many shots did the basketball team make during the game?
asked by anonymous 
Information Technology
What did Microsoft do to help prevent viruses like Melissa?
asked by Sherzz 
Arithmetic sequence
Three consecutive terms of an arithmetic sequence have a sum of 12 and a product of 80 .Find the terms. [hint : let the terms be x  d, x and x + d . ]
asked by Posul 
Math
Help Please. A wireless phone company offers two plans. In one plan, there is a monthly fee of $40 and a charge of $0.25 per minute. In the other plan, there is monthly fee of $25 and a charge of $0.40 per minute. For what number of minutes are the costs
asked by Fred 
Math
Jina is driving to Boston. Suppose that the remaining distance to drive (in miles) is a linear function of her driving time (in minutes). When graphed, the function gives a line with a slope of −0.95 Jina has 44 miles remaining after 34 minutes of
asked by Christine N. 
maths
A man drives from ibadan to Oyo, a distance of 48km in 45 minutes. If he drives at 72km/h where the surface is good and 48km/h where it is bad, find the number of kilometres of good surface.
asked by somay 
Math
A bag containing M&M'S contains 23 red, 54 brown, 15 yellow, and 9 orange candies. What is the probability of getting a yellow or orange M&M'S? my answer: 24/101 probability
asked by PLEASE CHECK MY ANSWER ASAP! 
Math
Kimmy's toy box is 3 feet tall, 6 feet long and the width is half of what it is tall. How many cubic feet of space are inside Kimmy's toy box?
asked by Anonymous 
computer science
Internet Service Provider An Internet service provider has three different subscription packages for its customers: Package A: For $9.95 per month 10 hours of access are provided. Additional hours are $2.00 per hour. Package B: For $13.95 per month 20
asked by ignatius 
Math
A $30.00 pair of jeans is discounted 20%. If sales tax is 5%, what will be the final price of the jeans?
asked by Anonymous 
mental math
if 600 divided by 6=100 then 602 divided by 6 =n
asked by dream 
History
Which landform explains the lack of cultural interaction between ancient China and ancient India? a. the Loess Plateau b. the Chang River Valley c. the Gobi dessert d. the Himalaya Mountains It's most likely c. right?
asked by Jiskha 
LA 7
Which statement from "Why Do We Need Zoos?" best captures the author's point of view? 1. "...zoos were open to the general public, too, so everyone could find out about animals." 2. "Some people feel that there is lots of wild space and that animals should
asked by Cool 
Calculus
Two cars leave an intersection at the same time. Car X is travelling East at 50 km/hr and Car Y is travelling South at 60 km/hr. Find the rate at which the cars are separating after 30 minutes. I want its complete solution
asked by ChrismB 
SS
1. To all white Southerners, except Confederate leaders, Lincoln offered (1 point) amnesty. reconstruction. freedom. the Ten Percent Plan. 2. What agency helped freed African Americans by establishing schools? (1 point) Reconstruction Bureau WadeDavis
asked by candy 
Biology; PLEASE I NEED THIS ANSWERED QUICKLY!
1. Fill in the five levels of human body organization. ~~~ Not sure what it's asking for me to do. Is it asking for me to name the most important body systems? Because in that case EVERY SINGLE ONE comes to mind. Just need a simple explanation and I'll be
asked by Astral Tellurian 
math
Find the resultant ir the sum of the displacement (1) 10m north west (2) 20m.30degree north of east (3) 35m due south
asked by Rosemary 
Math
diondre purchased a car for $22000. assuming the value of the car depreciates at a rate of 6% per year, approximately what will be the value of the car after 6 years
asked by Hanna 
Mathcheck my answers!!!
Check my answers please!!!! I really don't know how to do these but I tried my best 1. Simplify. 3x^2+ 5x5x^24x+52 A.8x^29x+3 B.2x^2+x+3 C.2x^29x+3*** D.2x^2+x+3 2. Add or Subtract.(8x – 2y) + (3x – 4y) A.11x+8y B.4xy C.11x6y*** D.5x+2y
asked by Jazmin G. 
math
A stone is thrown upward and rises 9ft before starting to fell. Find the total time taken for the stone to return to the starting point
asked by gillian 
Algebra
A cord is cut into two pieces of different lengths. The sum of the two lengths is 12 centimeters, and the difference between the two lengths is 4 centimeters. Find the lengths of the two pieces of cord.
asked by Sherry 
macroeconomics
11  7. (Fiscal Policy) Increased government purchases, with taxes held constant, can eliminate a recessionary gap. How could a tax cut achieve the same result?
asked by Alice 
Math
URGENT! an artist intends to paint a 60squarefoot mural on a large wall that is 18 ft wide and 11 ft tall. find the dimensions of the mural if the artist leaves a border of uniform width around it. Pls show me how'd you get your answer
asked by Laveeh 
Social Studies
How are the cultures of South America like the cultures in Mexico? How are they different? I just need one sentence of how they are similar and different. Thanks :)
asked by Val 
Chemistry
I need help please. The question is vinegar, or a dilute of CH3COOH (acetic acid), should have a molarity of around 0.83 M. Using the Ka for acetic acid, what should the pH of vinegar be?? Thank you!!
asked by Lilly 
PreCalculus
Determine the balance A for P dollars invested at rate R compounded N times per year for T years. Round each amount to the nearest cent P= $1000, R=3% t=10 years N=A 2=? 4=? 12=? 365=? Compounded continuously=?
asked by Juniper 
Math
The circular base of a cylinder has a diameter of its height is 5cm. Taking PI to be 22/7 find its volume
asked by Muhammad sani 
Math
Can someone please help me? I have one question I need help with. Thanks in advance. 4. Jayden opens a savings account with $100.00. His account pays 4% simple interest. How much money will be in his account one year later if he makes no deposits or
asked by Quzzy Modo's brother 
physics
a cube slides down a frictionless incline as shown and inelastically strikes a cube at the battom of the incline that's 1/2 (onehalf) it's mass. The coeff. of restitution between the two masses is 0.7. If incline is 30 cm high and table is 90cm off floor,
asked by Emily 
Science
100ml of h2s04 solution having molarity 1M and density 1.5g/ml is mixed with 400ml of water. Calculate final molarity of h2s04 solution if final density 1.25g/ml. Ans is 0.227M
asked by Anonymous 
algebra
a steamboat travels 9 km faster than a freighter. The steamboat travels 147 km/in the same time the freighter travels 120 km/ find the speed of each boat?
asked by ana 
chemistry
At what temperature average speed of nitrogen will be same as the RMS speed of oxygen at 300 kelvin?
asked by Priyanka 
history
Why were interstate highways initially built a. To accommodate the increasing number of automobiles b. To make it easier for U.S citizens to travel from state to state c. To enable the quick movement of troops in case of the nuclear attack* d. To allow for
asked by abstract 
math
You are planning a vegetable garden and you lay out a rectangular design 10 feet wide by 20 feet long. After laying out the design you decide you want a larger garden and decide to increase the length of the garden by a length of 2x feet and increase the
asked by MATH! 
chemistry
An enzymatic method for determining alcohol in wine is evaluated by comparison with a gaschromatography (GC) method. the same sample is analyzed several times by both methods with the following results (% ethanol). Enzymatic method:
asked by pacey 
Social Studies (please check Ms. Sue)
1. Why were interstate highways initially built? a. to accommodate the increasing number of automobiles b. to make it easier for U.S. citizens to travel from state to state c. to enable the quick movement of troops in case of a nuclear attack*** d. to
asked by SpitFireRedHead 
math
the 10th,4th and 1st term of an A.P are the three consecutive numbers of a G.P and the sum of the 1st 6 terms ;take 4 as the 1st term
asked by Abdul Ahad 
Complex Numbers
Let z and w be complex numbers such that z = w = 1, and zw is not equal to 1. Prove that (z + w)/(zw + 1) is a real number.
asked by Katie 
math
A random sample of 16 midsized cars tested for fuel consumption gave a mean of 26.4 kilometers per liter with a standard deviation of 2.3. (a) Assuming that the kilometers per liter given by all midsized cars have a normal distribution, find a 99%
asked by Kapaki Katea 
Physics
A block of weight 3.8 N is launched up a 30 ∘ inclined plane of length 2.20 m by a spring with spring constant 2.40 kN/m and maximum compression 0.10 m . The coefficient of kinetic friction is 0.50. f so, how much kinetic energy does it have there; if
asked by Megan 
chemistry
Suppose the ÄGof, ÄHof, and ÄSo are available and valid at 298 K. Which equation(s) could be used to calculate the change in Gibbs Energy if all product and reactant concentrations (pressures) are 1 M (1 atm) and the temperature is 298 K? Choose all
asked by leighann 
Math
Two old friends meet. They hadn't seen each other in 22 years. Betty is 6 years older than France's, but neither is older than 50. The sum of their ages when they met is exactly half of their ages today. How old is Betty? B= F+6 B=5022 =28 F =50 22=28
asked by Steve 
Math
Solve: _/_*_+_*_*_/_+_*_=100 Using only numbers 19 in any order.
asked by Rich 
Stastics
Did I do this right and should i show more work? Listed below are body temperatures for four subjects measured at two different times in a day. Body Temperature (°𝐹) 𝑎𝑡 6 𝑎𝑚: 98.0,97.0,98.6,97.4 Body Temperature (°𝐹) 𝑎𝑡 6
asked by Davina 
SCIENCE
I mix 300.0ml of the barium nitrate solution from 1c with 100ml of a 1.50M lithium phosphate solution. The reaction produces solid barium phosphate a. Write a balanced equation for the reaction. b. Which is my limiting reagent? c. How much barium phosphate
asked by AKASH 
math
Kelly drew a 10x10 grid. Richard drew a 16x16 grid. They each shaded 1/4 of their grids. Who shaded more squares? Why did they each shade a different number of squares?
asked by renita 
Physics
Many hotwater heating systems have a reservoir tank connected directly to the pipeline, so as to allow for expansion when the water becomes hot. The heating system of a house has 57.4 m of copper pipe whose inside radius is 7.52 x 10 3 m. When the water
asked by Noodle man 
language mechanics
A.(Well.I see we need some more pens.) B.(Well do you want to order a stapler?) C.(No;the tape dispenser is not there.) D.(No,the paper the paper clip box is not empty.) Need help
asked by scotty 
maths
An arithmetic series has first term 5 and a common difference 7 a) write down the 4th term and the 23rd term b) find the sum of the first 38 terms of this series.
asked by Anonymous 
math
Jennifer is playing a game that involved rolling a fair number cube. She rolled the number 2 twelve times. What is the best prediction of the number of times she will roll a 2 if she rolls the dice 100 times?
asked by Oscar 
chemistry
Suppose the ÄGof, ÄHof, and ÄSo are available and valid at 298 K. Which equation(s) could be used to calculate the change in Gibbs Energy if all product and reactant concentrations (pressures) are 1 M (1 atm) and the temperature is 298 K? Choose all
asked by Leighann 
life orientation
list and discuss any 4 factors that could threaten or limit the core functions of the media
asked by rufaida khan 
PHYSICS HELP DENSITY
An object hanging on a scale reads 24.0g when submerged in water, but 48.0g when submerged in oil (specific gravity 0.80) Find the density of the object.
asked by Steph 
math
Write an equation in slopeintercept form with slope (1/4) passing through (4/9),(67/36)
asked by anonymous 
math
kimberly is making lemonade for her glass. she mixes 2 liters of lemonade and 3000 ml of strawberry juice, how many litres of lemonade will kimberly have
asked by Anonymous 
PRECALC
solve the equation 1. cos(θ) − sin(θ) = 1 2.2 cos(θ) tan(θ) + tan(θ) = 1 + 2 cos(θ) 3. sin(θ) cos(3θ) + cos(θ) sin(3θ) = 0 4. sin(2θ) cos(θ) − cos(2θ) sin(θ) = 1/2 5. cos(2θ) + cos(θ) = 2 6. cos(2θ) + sin2(θ) = 0
asked by help! 
Chemistry
References Chapter 17: EOC Assume you dissolve 0.178 g of the weak acid benzoic acid, , in enough water to make mL of solution and then titrate the solution with 0.187 M . ( for benzoic acid = .) What was the pH of the original benzoic acid solution?
asked by Anonymous 
Math
19 students share 6 pizzas each need equal portions how much will each one have? I divided 6 pizzas into 8 pieces which gave me 48 pieces so 6/8 of a pizza
asked by Bobby 
precalc
solve the equation cos(x) + sin(x) = 1
asked by help! 
math
A cylindrical tank with diameter 20in. is half filled with water. How much will the water level rise if a metallic ball of radius 4 in. is placed in the tank?
asked by mary 
PHYSICS HELP!
1. A 125gram projectile strikes a 1.45 kg block that's attached to a massless vertical pole & becomes embedded in the block causing the bullet & block to swing upward. The overall length of the pole & the block combined is 1.1m. The bullet & block at the
asked by A 
Math
number obtained by interchanging the digits of a two digit number is less than the original by 18 and the sum of the digit ia 6. what is the original number ?
asked by Shalini 
probabilities
Let X be a Poisson random variable with µ = EX = 0.4 and let Y be another random such that E[(2Y + 1)2 ] = 10 and E[(Y − 1)2 ] = 4 Consider the random variable Z such that Z = 3X + 4Y + 2. 1. Find E(X2 ), E(Y 2 ) and E(Z). 2. Suppose that X and Y are
asked by hassan 
probabilities
Suppose that a certain type of metalic tube contains on the average five defects per 900 feet. Let X be the number of defects per 900 feet 1. What distribution does X follows ? 2. What is the probability that a tube 900 feet long contains no defects ? 3.
asked by hassan 
Stastics
The UMUC bookstore states the average textbook costs $119. A randomly selected sample of 26 new textbooks at the UMUC bookstore had a mean price of $123.45 and sample standard deviation of $15.23. Use a 0.05 significance level to test the claim that the
asked by Nick 
Logs
Determine the domain of the following functions, write answer using interval notation. T(x)=log12(x^2+14x)
asked by Juniper 
Chemistry
Consider the reaction: 2H2+2NO>N2+2H2O. Initially 1.20mol of H2 and 0.95 mol of NO are placed in a container(all reactants and products are gases). If after 5 seconds the amount of H2 has been reduced to 1.02mol then how much NO is left and how much N2
asked by Sean 
L.A. 5th grade
What is the meaning of the prefix ion in civilization? Also, check my work  Civilization prefix suffix and root Prefix  civ citizen Suffix ion  ?? Root civilization cultural location Plzzz ASAP!!!!!!
asked by Jelena 
Chemistry
How many grams of MgCl2 would be required to make 440 g of magnesium ? The other product is chlorine.
asked by B 
Geometric series
Find the sum of the following series : a) 1  1/¡Ì2 1/2  1/2¡Ì2 ¡to 20 terms.
asked by Posul 
Algebra
I lined up all of my pet snakes. The two pythons are 6 feet each. I also have three corn snakes that are all the same length. Altogether, my snakes total 21 feet. A. How long is one of the corn snakes? B.Write an equation that models this situation. Thank
asked by Sierra 
Nursing
If I have a 69 in the class and I got a 33 out of 50 on the test and she giving 20 points what would be my grade?
asked by Shanice 
Science
18 g of hydrochloric acid reacts with 15 g of calcium hydroxide produce calcium chloride and water.
asked by Jaime 
Calc 2
Determine whether the series is convergent or divergent series symbol n=1 to infinity (n^2/(e^(3n))
asked by TayB 
Chemistry
Solution of formic acid (HCOOH) with a pH of 1.98. Find the molarity of the acid.
asked by Leslie 
maths
The first four terms of an arithmetic sequence are 2, xy, 2x+y+7 and x3y where x and y are constants. Find the x and y and hence find the sum of the first 30 terms.
asked by Anonymous 
Math
an aircraft flew 2 hours with the wind. the return trip took 3 hours against the wind. if the speed of the plane in still air is 140 miles per hour more than the speed of the wind, find the wind speed and the speed of the plane in still air
asked by help 
Spanish
PLEASE HELP!! I'm confused because I know that the conjugated form for "yo" is digo, but I think it might be decir also because its translated as I have to tell the truth, and decir means "to tell." Yo tengo que _______ la verdad. decir dicen decimos digo
asked by Becca 
Geometry
The length of a radius is 10 inches. If the measure of one chord is 12in. and the measure of the other is 16in., how much closer to the center is the chord that measures 16 than the one that measures 12?
asked by Lesha 
math
I need help for math
asked by Anonymous 
Math/Precal
How do i solve for x: (9^2x)/(27^x2)=81^3x4
asked by Jan 
Math
Solve for x 2 (3+x)= 5x+54
asked by Louis 
chemistry
How much heat must be removed from 75.0 grams of water at 90.0 degrees Celsius to cool it to 23.0 degrees celsius?
asked by Hope 
Stastics
In a study of proctored and nonproctored tests in an online course, researches obtained the data below: Group 1 (Proctored): 𝑛 = 30, 𝑥̅= 74.30, 𝑠 = 12.87 Group 2 (Nonproctored): 𝑛 = 32, 𝑥̅= 80.62, 𝑠 = 22.09 Use of 0.05 significance
asked by Mariana 
Logs
Solve the equation and check your solutions. Note any extraneous answers. log(3x13)=2  log x
asked by Kasey 
math
What is the missing coordinate that would make the following shape a rectangle? (4,8),(12,8),(12,16)? Edit
asked by Anonymous 
Linear Algebra
Let T : Rn>Rn be a linear transformation, whose standard matrix is invertible. Show that if B = {v1, . . . , vn} is a basis for Rn, then {T(v1), . . . ,T(vn)} is also a basis for Rn.
asked by Alex 
math
a die is rolled in such a way that even faces are twice as likely to occur as the odd faces. what is the probability that a prime number shows up when rolled?
asked by math 
math
there are 7 runners on the track team.runners will be selected randomly for first,second,third and final positions on 4 member relay team. a)how many different relay teams can be formed? b)what is the probability that a runner at random is chosen to be in
asked by Munna 
Chemistry
How do i find the PH and pOH of 12.5ml of 15.8M HNO3 added to 400ml of 0.57M KOH
asked by Sean 
math
Mrs. Johnson is buying clay for her 20 art students. She needs 1 pack of clay for each student. There are 6 packs of clay in each case. How many cases does Mrs. Johnson need to buy to have enough clay for all her students? How many extra packs will she
asked by renita 
chemistry
If the water in 500mL of 0.44M NaCl solution is evaporated, what mass of NaCl will remain?
asked by Justin 
probabilities
The random variable X has the Poisson distribution with parameter λ > 0. According to Chebeyshev’s Theorem, P(s < X < 99) ≥ 3/4. 1. Determine the value of k in the Chebeyshev’s inequality. 2. Determine the value of s
asked by hassan 
Mathematics
The total area of the shape is 182 cm2
asked by Labor 
Science
25 g of Iron (II) Oxide reacts with 25 g of Chloric acid to produce Iron (II) chlorate and water. a. Determine the limiting reactant b. Determine the excess reactant c. Determine the theoretical yield of water d. Determine how much excess reactant is left
asked by Jaime 
science
how can I discuss how Mendeleev's periodic table relates with the modern one
asked by varaidzo 
Calculus
Along reservoir has the shape of a right circular cone having a radius of 40m at the top and a height of 10m at the centre. it is being filled at a constant rate of 40 m^3/min.Find the rate at which the water level is rising when the height is 5m?
asked by ChrismB 
Chemistry
How many grams of MgCl2 would be required to make 440 g of magnesium ?
asked by Ben 
Creative writing
i want to write a poem in the exam but don't have any idea about that. pls post a poem 10 to 14 lines long and a one with hard word meanings.
asked by Ritobroto 
Math/Precal
The size of a decreasing population is given by p(t)=P0(2)^t/7 where p(t) represents the population as time, t, in years and p0 is the initial population what percent of the original population will be there after 10 years??
asked by Lucia 
probabilities
A radioactive source of material emits a radioactive particle with probability 1/100 in each second. Let X be the number of particles emitted in one minute. 1. Determine the probability distribution, the expected value and the variance of X. 2. Calculate
asked by hassan 
Math
A farmer wants to plant 80 acres of corn a soybeans in a ratio of 7 to 9. How many acres of each must he plant?
asked by May 
History
What could i say to someone to convince them to enlist in war? An example i thought of was saying how the patriotic fund will take care of ur family while ur at way, but i need moreee examples please help
asked by Hi 
algebra
A national home improvement store's revenue y (in millions of dollars) during the years from 1996 to 2007 is given by the equation y=15x+55 where x is the number of years after 1996. a)Use the equation above or a graph of the equation to complete the
asked by wendy 
Pre=Calc
Use composition to show that the given functions are inverses (You must show both compositions). Help? g(x)=x^2+3/2
asked by Kasey 
Mathematics
if the area of the trainingle is 112cm2, what is the height, h, of the training
asked by Labor 
Stastics
Imagine a researcher presented a null hypothesis that in a certain community, the average energy expenditure of residents is at least 2,100 calories per day. He randomly sampled 100 residents in that particular community. He computed a negative test
asked by Davina 
math
What is the coefficient of x in (x^4 + x^3 + x^2 + x + 1)^4?
asked by Annonymous 
Chemistry
Rate of teaction depends upon a)Number of effective collision b)Concentration of the reactant c)Temperature d)All of these
asked by Ramsha 
maths
how many terms in the arithmetic series are needed to make a total of 204? 2 + 3.25 + 4.5 + .....
asked by Anonymous 
Mathematics
When 8 is added to 2 times a number the sum is 32.what is the number. Is it 16 or 4
asked by Annette 
math
1/2 x 1/2 x 5/6 =
asked by awesome 
Science
how does changing temperature affect inland and coastal areas? Please give me a brief explanation.
asked by saliha 
U.S. History (Check, Please!)(REED)
Write 2 paragraphs describing some of the race issues the United States dealt during WWII. A: The United States dealt with many issues during World War II. Most of these issues were racerelated or involved racism. For example, when hordes of African
asked by Victoria 
7th Grade Math
Sarah has $200 to spend. She buys a chair for x dollars and pays 6% sales tax. She has y dollars left. What equation models this situation? A. 200  0.06X = Y b. 200  1.06x = y C. 200 + 1.06X = Y D. 200 = 0.06X I chose answer A. Is that the correct
asked by Misty 
PHYSICS ROLLING MOTION!!!
A unicycle with a tire 44.0 cm in diameter travels 2.00 km. How many revolutions does the wheel make?
asked by Steph 
Computer science
I want to make my traffic lights run automatically without any user input. I have created this code so far but the images don't show up please help. My code: var lights=["red.jpg","redamber.jpg","green.jpg","amber.jpg"] var lightscentre= 0; var timer;
asked by L 
Math
How do i express y as a function of x Logy=1/3(logxlog27)
asked by Pat 
Stastics
In a study of proctored and nonproctored tests in an online course, researches obtained the data below: Group 1 (Proctored): 𝑛 = 30, 𝑥̅= 74.30, 𝑠 = 12.87 Group 2 (Nonproctored): 𝑛 = 32, 𝑥̅= 80.62, 𝑠 = 22.09 Use of 0.05 significance
asked by Mariana 
probabilities
A weighted coin is flipped 200 times. Assume that the probability of a head is 0.3 and the probability of a tail is 0.7. Each flip is independent from the other flips. Let X be the total number of heads in the 200 flips. 1. What is the distribution of X ?
asked by hassan 
Chemistry
What is the pH change when 27.6 mL of 0.0920 M is added to 94.1 mL of a buffer solution consisting of 0.146 M and 0.174 M ? ( for ammonium ion is .) pH change =
asked by Anonymous 
Physics
Please help me solve this, most likely simple, problem. I am just starting to learn physics and am finding it very confusing. If you could include a key to explain any formulas used it would be very helpful thank you. I have calculated GPE to be 1500J but
asked by Rich 
Database
What is the CAP theorem? Give an informal explanation of why it is true. What are the consequences, in the form of design decisions, that must be made when developing a highly distributed Web application?
asked by Olu 
helpppp
Write an equation of the line passing through (3,21)and (4,35) in the form of A x + B y = C. Where A, B and C are real numbers
asked by wendy 
math
5/8 of Peter's money is 3.50, how much is his money?
asked by benita 
maths
find the value of the sum 39+40+41+42+......+379+380
asked by Anonymous 
chemistry
When irradiated with a radiation of wavelength 58.4 nm the electron of H atom was ejected with kinetic energy 7.6 eV. Calculate the ionization energy.
asked by kamila t arakkal 
life orientation
I want to know about 3human rights violations
asked by precious 
math
jonathans picture has a perimeter of 38 inches. If the length of the paper is 11 inches what is the width
asked by Khlen 
PreCal
An airplane is traveling at 575 mph in the direction of S 83 degree W. The wind is blowing at N 35 degree W. What is the actual speed and direction of the plane?
asked by Kate 
math
Using the simple interest formula, how much interest is charged on a 30 year $100,000 house loan at 6%?
asked by Anonymous 
math
Using the simple interest formula, how much interest is charged on a 30 year $100,000 house loan at 6%?
asked by Anonymous 
L.o
There will shotage of jobs
asked by Lebogang Theodora 
PreCalculus
g(x)= x^2+7 Find the inverse of g(x) and state the domain and range for the inverse of g(x) using interval notation
asked by Juniper 
math123
what is the slope, m, for this model
asked by Anonymous 
maths
Find the limit of the sequence below as n tends to infinity Un+1 = 0.6Un  0.3 U1 = 4500
asked by Anonymous 
Mathematics
When 8 is added to 2 times a number the sum is 32.what is the number. Is it 16 or 4
asked by Anonymous