Questions Asked on
July 27, 2015

Chemestry
Question 1) Consider the following reaction of calcium hydride (CaH2) with molten sodium metal:CaH2(s) + 2 Na(l) > 2 NaH(s) + Ca(l) Identify the species being oxidized and the species being reduced? Question 2) Give the names to the binary compounds
asked by Ashley 
precalculus
What is the exact value of sin 225
asked by Daisy 
Calculus
Can someone show how to solve this problem Two vertical towers of heights 60 ft and 80 ft stand on level ground, with their bases 100 ft apart. A cable that is stretched from the top of one pole to some point on the ground between the poles, and then to
asked by Hank 
College Algebra
Find a fourthdegree polynomial with integer coefficients that has zeros 4i and −1, with −1 a zero of multiplicity 2. (Use x for the variable.) can somebody help me do this?
asked by Melany 
research and MLA citation
Which of the following would not be considered plagiarism? A. Summarizing source information and including a citation on the Works Cited page B. Acknowledging a source when directly quoting but not including quotation marks C. Submitting an essay that a
asked by Daniela 
MLA citation
Which type of writing assignment would benefit the most from the use of outside sources? A. The first act of a play about John !@#$%^&ennedy B. An essay describing your favorite kind of automobile C. An informative essay about the transformation of a
asked by Daniela 
Precalc
which expression completes the identity sin ucosv=?
asked by Daisy 
Math
Suppose the rate of inflation this year is 4.5%. What is the percentage decrease in the buying power of a dollar? a) 4.3% b) 4.7% c) None of the above.
asked by Jessica 
Math
1. Suppose the buying power of the dollar decreases by 6.7% this year. What is the rate of inflation this year? a) 7.6% b) 7.2% c) None of the above.
asked by Jessica 
MLA citation
Which of the following is an example of a secondary source? A. An interview with Stephen King B. A novel by Stephen King C. Stephen King's letters to his editor D. A biography of Stephen King my answer is d.
asked by Daniela 
science
Lamont has a dark container. He knows that the container has a mass of 2.0 g when it is empty. He cannot see inside the container. However, he is able to use a balance to determine that the container has a mass of 2.7 g. What can Lamont conclude about the
asked by Nour 
precalculus
find the exact value of sin 112.5 in fraction form
asked by Daisy 
MLA citation
Suppose that you're going to interview someone in preparation for writing a research paper on teaching techniques for macroeconomics. For this topic, who would be the best person to interview? A. A student in a macroeconomics course B. An economist C. A
asked by Daniela 
science
Amanda is holding a compass and notices that the north pole of the compass points toward the north pole of the Earth. She is confused because she knows from her science classes that the north poles of two magnets will repel each other. How can she explain
asked by Nour 
MLA citation
Which of the following statements is true about choosing sources? A. Books and articles written prior to the year 2000 are the most accurate. B. A person's opinion makes the best source when you hear it yourself. C. It's most important to determine whether
asked by Daniela 
MLA citation
Of the following, which is the most important to consider when analyzing and revising an academic paper? A. That the paper will be entertaining for the instructor to read B. That the thesis is clear and that the main points support that thesis C. That the
asked by Daniela 
precalculus
which of the following is a solution to 3tan^3x=tanx? A.) 60 degrees B.) 120 degrees c.)150 degrees D.)240 degrees E.)300 degrees
asked by Daisy 
Math
The amounts by weight of gold, silver and lead in three alloys of these metals are in the ratio 1:5:3 in the first alloy, 2:3:4 in the second and 5:2:2 in the third. How many kg of the first alloy must be used to obtain 10kg of an alloy containing equal
asked by Anne B. 
Chemistry
A technician mixes a solution containing silver nitrate with a solution containing sodium chromate. 2.89 g of precipitate is produced (assume silver chromate). Calculate the mass of silver nitrate present in the first solution. Make sure you have the
asked by Jill 
MLA citation
Why is it better to rely on information from scholarly journals, not magazines, in academic writing? A. Scholarly journals are more difficult to find. B. Magazines are entertaining, which means they can't be educational. C. Scholarly journals are more
asked by Daniela 
Statistics
The Phillies were accused of cheating their beer customers by not putting enough beer in their 12 oz cups. When 15 cups were selected at random, they were found to have a mean of 11.7 ounces with a standard deviation of 0.5 ounces. At the .01 significance
asked by Sabrina 
chemistry
How many grams of table sugar (C12H22O11) will be needed to make 3.5 L of a 11.5 M solution?
asked by Will 
math
In a class election,the votes of the two candidates were in the ratio 4:5. If there were 45 students in the class, how many did each get?
asked by jas 
French  SraJMcGin
If my paragraph is correct « Une affaire terriblement seule de la vie. Vous entrez dans seul le monde et vous sortez seul du monde pourtant il semble à moi que vous êtes plus seul tout en vivant que jamais allant et venant » – Emily Carr In le roman,
asked by Rose 
MAL citation
In MLA style, how long must a quote be to be a block quotation? A. More than 8 lines B. More than 2 lines C. 50 words or more D. More than 4 lines my answer is d.
asked by Daniela 
Developing Healthy Eating Habits
If an outdoor runner develops a headache, feels tired, and has an elevated heart rate, what is the most probable cause?
asked by myke 
Math
A package of 12 hex bolts and 10 anchor bolts weighs 7 pounds. A second package of 5 hex bolts and 15 anchor bolts weighs 4 pounds. A single hex bolt weighs ___________pounds, rounded to one decimal place.
asked by Amy 
English Vocab 9
Jessica gave a ___________ account of the conversation she'd had with the police. A) verbatim B) decorous C) dilatory D) munificent 2. The _________ old apple seller on the street corner used to scare Sarah. A) copasetic B) pulchritudinous C)
asked by Anonymous 
English 9 grammar
1. Which of the following is grammatically correct? (mixed constructions) A) Even though the boy left early does not mean he was sick. >>B) Even though the boy left early, it does not mean he was sick. 2. Which of the following is grammatically correct?
asked by Anonymous 
Maths
Two trains, Aand B , leave a train station at the same time but in different directions, one towards east and the other towards west. Train B travels 20km/h faster than train A. After 6 minutes, the two trains are 11 km apart. Find the average speed of
asked by Jones 
Physics
A particle is projected from the surface of Earth with a speed equal to 2.4 times the escape speed. When it is very far from Earth, what is its speed? ?km/s
asked by Anonymous 
Maths Problem
Really need help..I can't figure out how? A van travelling at 60km/h left Town A for Town B at 7.00am. At 7.30am, a car left Town A for Town B. If the car travelled at an average speed of 80km/h, at what time would it catch up with the van?
asked by Amy S. 
trigonometry
From the roof of the building 25 meters high, the angle of elevation of the top of the pole is 21°11’ , from the bottom of the building, the angle of elevation is 43°2’, determine the height of the pole .
asked by yn 
MLA citation
What is the difference between a bibliography and an annotated bibliography? A. An annotated bibliography includes a brief summary of each source's content and focus. B. It's easier and faster to complete an annotated bibliography. C. An annotated
asked by Daniela 
Nat Sci
how do mountain formed? its because of the colliding pulling apart sliding past each other of tectonic plate? am i right? what is the difference of tectonic plates with plate tectonics?
asked by micoh 
Algebra
A woman spent 75 more than 75% of her money in one store. She then spent 75 more than 75% of her remaining money in another store. She did the same in a third store and had only 700 left. How much money did she originally have? My answer is 51,100. Is this
asked by Jeysi 
Math
Suppose the stock of Microsoft increases in value by $5 per share. If all other Dow stock prices remain unchanged, how does this affect the DJIA? a) 37.80 points up b) 30.24 points up c) 22.68 points up
asked by Jessica 
math
I really need help to find the answer to this question below. If possible, please show every step of the way in a detailed form so i can understand, it takes me a while to fully comprehend whats being done. Thank you so much. QUESTION: the data shown model
asked by sarah 
math
how to construct a quadrilateral MATH where MT bisects M. AH is perpendicular bisector of MT. M is 60 degrees. A is 120 degrees. MH is 8cm
asked by Roch 
Math
One solution contains 25% as much water as alcohol and another solution contains 5 times as much water as alcohol. How many gallons of each solution must be mixed in order to obtain 7 gallons of the new solution which contains as much water as alcohol?
asked by Ben 
math
Evaluate(2+j4)*(3j4) and express in polar coordinate fform
asked by saurabh 
Maths
A car traveled from A to B at a speed of 15 km/h and return at a speed of 30 km/h. Find the average speed for the whole journey.
asked by Jones 
m.e.i.pampore
if we tritrate weak acid(oxalic acid)with strong base(naoh).which indicator is used and why
asked by yamin nazir 
chemistry
What volume of 0.5M H2SO4 will exactly neutralise 20cm3 of 0.1MNaOH solution?
asked by aniekan 
English 9
1. Jessica gave a ___________ account of the conversation she'd had with the police. A) verbatim B) decorous C) dilatory D) munificent 2. The _________ old apple seller on the street corner used to scare Sarah. A) copasetic B) pulchritudinous C)
asked by Anonymous 
math
The product of the digits of 2000 is 0. How many integers y, 2000
asked by hila 
math
The product of 2000 negative numbers could equal. A. 200 B. 1 C. 0 D. pi
asked by hila 
math
The square of a certain whole number N is N squared.If 60 is a factor of N squared ,its possible that xis not a factor of N squared.
asked by Anonymous 
math
The dimensions of a box are 9 by 16 by radical 25. Its volume is a. 60 b. 3600 c. √(50) d. √(60) please explain
asked by Anonymous 
trigonometry
From the roof of the building 25 meters high, the angle of elevation of the top of the pole is 21°11’ , from the bottom of the building, the angle of elevation is 43°2’, determine the height of the pole .
asked by lyn 
Maths
kavita has 1 metre of ribbon. she uses 1/3 metre to wrap one package. ho many package can she wrap with 2 metres?
asked by Kashish 
precalculus
Which of the following is NOT a solution to cos^2x=3sin^2x? A.) 30 degrees B.) 60 degrees C.) 150 degrees D.)210 degrees E.)330 degrees
asked by Daisy 
Math
There's a question I've been having difficulty solving, and I would really appreciate if you can show he steps to how I can achieve the answer. QUESTION: The numbers 1, 4, 10, 20, and 35 are called tetrahedral numbers because they are related to a four
asked by Sarah 
precalculus
which expression is equivalent to (sinx+1)(sinx1)? A.) COS^2X B.) COS^2X C.) COS^2X+1 D.) COS^2X1 E.) COS^2X+1
asked by Daisy 
Statistics
About how many participants are needed for 80% power in each of the following planned studies that will use a t test for dependent means with p
asked by Maria 
Algebra
The mean is 18.1 the data set for 13 is 1.7 What is the standard deviation for this data set.
asked by Malu 
MLA citation
Which of the following is not a tip that can help you find good sources for a topic? A. Limit yourself to one source in the beginning. B. Have a narrowed topic and working thesis. C. Keep track of citation information for each source. D. Have a clear
asked by Daniela 
MLA citation
Which of the following is an example of opinion? A. The Canadian men's hockey team won the gold medal in the 2010 Winter Olympics. B. Abraham Lincoln presented the Gettysburg Address on November 19, 1863. C. The color blue sometimes signifies sadness or
asked by Daniela 
MLA citation
You're working to come up with an interesting topic. Which of the following terms would not apply to that effort? A. Manageable B. Breaking C. Practical D. Novel I believe is b.
asked by Daniela 
al 1
how do you solve 4x < 0.325?
asked by denya 
Math
Two acid solutions are to be mixed together. Solution A is 30% acid by volume. Solution B is 70% acid by volume. The 800 mL mixture is 54% acid by volume. The amount of Solution A, rounded to the nearest milliliter, is ____________mL.
asked by Amy 
English grammar
He loves reading good books. Make it as the complement of an intransitive verb of incomplete prediction.
asked by Richa 
Math
From the top of a tree the angle of depression of a boat is 30degree if the height of a tree is 36m above the sea level calculate the horizontal distance of the boat from the bottom of a tree?
asked by Charito 
Maths
A rectangle has area 6 cm^2 and diagonal length 2 square root 5cm. What is its perimeter
asked by Liam 
math
construct a triangle ABC such that AB =BC=4.7 cm and
asked by SUNITA 
Physics
What distance does Anna covered by running on a circular track of length 500m?
asked by Edgar 
algebra
5x1=1 32x+5=17
asked by beverly 
Maths
John spends 380 dollars to buy the following two items sugar and salt, the amount is 100 bags, a bag of sugar is 2 dollars, a bag of salt is 5 dollars, how much did John bought each of it? I dunno how to write the equation and helps pls
asked by Jones 
Algebra
Use factoring to solve 5^48x^2=0 Not sure where to begin I got x^2(5x^2)8=0
asked by sue 
algebra
f(x)=2x^220x+5 find vertex is(5,55)correct
asked by roger 
algebra
I get f(5)=2*5^220*5+5=2*25100+5=50100+5=55 not sure what doing wrong
asked by roger