Monday
September 15, 2014

# Posts by hope

Total # Posts: 129

Chemistry
Can you help me understand how to review the math definition... what "percentage" means. I need to know what the total mass of the mixture of 42 grams of apples and 96 grams of oranges. ANd what is the percentage of mass the apples are? Thank you.
September 9, 2014

mat/156
If p stands for this meal is delicious and q stands for busy people do not eat, write each of the following in symbolic form. Use this information to answer parts a through c. (A)This meal is delicious. (B)busy people do not eat or this meal is not delicious
August 23, 2014

mat/117
An object 8.1 feet tall casts a shadow that is 24.3 feet long. How long in feet would the shadow be for an object which is 17.7 feet tall?
August 1, 2014

mat/117
Select tge approximate values of x that are solutions to f(x)=0, where f(x)=3x^2+2x+6
August 1, 2014

mat/117
Select the first five terms in the arithmetic sequence an =2n, starting with n= 1
August 1, 2014

mat/117
Select the approximate values of x that are solutions to f(x)=0, where f(x)=-8x^2+7x+2
July 20, 2014

mat/117
Select the approximate values of x that are solutions to f(x)=0, where f(x)=-3x^2+3x+9
July 20, 2014

mat/117
The profit (P), in dollars, for a company is modeled by the funtion P=-750x^2+15,000x, where x is the number of items produced. For which values of x will the company losr money?
July 13, 2014

mat/117
Determine the equation of g(x) that results from translating the function f(x)=x^2+9 upward 11 units.
July 13, 2014

mat/117
Select the x-coordinate of the vertex of the parabola defined by the function f(x)=-5x^2+3x+1
July 13, 2014

mat/117
F(g)=-6x-1 and g(x)=4x^2. Select the solution for (fg)(x)
July 13, 2014

mat/117
F(x)=-6x-1 and g(x)=4x^2. Select the solution for (f+g)(x)
July 13, 2014

Pre algebra
25ft piece wire cut into 2 pieces one piece is 19ft shorter than the other piece how long was each piece
June 8, 2014

Multiple choice please help :) Which of the following is equivalent to one ampere? 10 s/10 C 10 C/10 m 1.5 C/1.5 s 15 C/10 s
May 8, 2014

Physics
A 300 kg piano slides 4.4 m down a 30° incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. The effective coefficient of kinetic friction is 0.40.(a) Calculate the magnitude of the force exerted by the man.(b) Calculate the work...
March 21, 2014

Physics
I just found out for part a that you would do: 1075*9.8*230*sin(17.5) which would then equal: 726915 I still need help with part b though.
March 21, 2014

Physics
What is the minimum work needed to push a 1075 kg car 230 m up along a 17.5° incline? (a) Ignore friction. (b) Assume the effective coefficient of friction retarding the car is 0.30?
March 21, 2014

Physics
A 300 kg piano slides 4.4 m down a 30° incline and is kept from accelerating by a man who is pushing back on it parallel to the incline. The effective coefficient of kinetic friction is 0.40. (a) Calculate the magnitude of the force exerted by the man. (b) Calculate the ...
March 21, 2014

Physics 141
A satellite is in a circular orbit around an unknown planet. The satellite has a speed of 1.60 104 m/s, and the radius of the orbit is 5.50 106 m. A second satellite also has a circular orbit around this same planet. The orbit of this second satellite has a radius of 8.50 106 ...
February 21, 2014

Physics 141
A satellite is in a circular orbit around an unknown planet. The satellite has a speed of 1.60 104 m/s, and the radius of the orbit is 5.50 106 m. A second satellite also has a circular orbit around this same planet. The orbit of this second satellite has a radius of 8.50 106 ...
February 21, 2014

Physics 141
A snowmobile moves according to the velocity-time graph shown in the drawing. What is the snowmobile's average acceleration during each of the segments A, B, and C? The scale for the time axis is 100 s per increment, and the scale for the velocity axis is 110 m/s per ...
January 30, 2014

Chemistry
How to separate and isolate the components of barium sulfate?
June 11, 2013

life orientation
5 factors that contribute to hiv aids
April 25, 2013

Ashford
One element generally not found in caste systems is: (Points : 1) the association of one’s social position with one’s occupation. inheritance of one’s status. equal access to wealth. prohibitions on marrying those outside one’s class.
March 24, 2013

Mathematics
The bearing of Q from P is 060¤ while the bearing of R from Q is 150¤ if PQ=QR find the bearing of R from P
March 16, 2013

Mathematics
The bearing of Q from P is 060¤ while the bearing of R from Q is 150¤ if PQ=QR find the bearing of R from P
March 16, 2013

Math
Imagine a country has a population of 210 million. Within the country there are 95 million people who are employed workers, 50 million people incapable of working, and 60 million people capable of working, but not actively looking. Based on this information, what is the ...
February 23, 2013

Math
Imagine a country has a population of 210 million. Within the country there are 95 million people who are employed workers, 50 million people incapable of working, and 60 million people capable of working, but not actively looking. Based on this information, what is the ...
February 23, 2013

Algebra
a function contains the following four points (4,16),(-9,81),(8,64),(-5,25). What is the possible symbolic representaion (formula) of the function.
February 16, 2013

QRB
Complete the following two problems. Problem 1 The table shows the number of greeting cards that Americans buy for various occasions. Holiday/Event Cards Sold Valentine’s Day 900 million Mother’s Day 150 million Father’s Day 95 million Graduation 60 million ...
January 8, 2013

College Algebra
How do you solve 3 log(base 2)*(x-1)+ log(base 2)4=5
November 12, 2012

Healthcare
Indicate at which point flat-of-the-curve medicine is experienced in the following example (imagine that antibiotics have been prescribed for a given population of 1,000 elderly persons).
October 1, 2012

statistics
Write a brief paragraph describing the distribution of the variables, Population in thousands (populatn) and the average female life expectancy (lifeexpf) for the countries. Descriptive Statistics Population in thousands Average female life expectancy Valid N (listwise) N 109 ...
September 17, 2012

Chemistry
Thank you!!
September 7, 2012

Chemistry
A lead atom has a mass of 3.4x10^-9g. How many lead atoms are in a cube of lead that has a volume of 2.00cm^3 if the density of lead is 11.3g/cm^3?
September 7, 2012

world literature
we have to get this done im home schooled and i dont have a teacher at my beck and call all we want is to get help so we can get a good grade on it doesnt help if you ask us more questions when we dont get the material in the first place.....
July 25, 2012

social studies
In _____, the Supreme Court placed limits on gerrymandering by requiring all congressional districts to have roughly the same number of constituents.
July 6, 2012

Area Geometry
Find the area of a decagon with a radius of 4mm. Find the area of an octagon with a radius of 10 cm.
April 10, 2012

Math
Hello, I need help to understand step by step of my math problem. I am not understanding how to get the answer. Thank You for your help Hope
April 9, 2012

Born:February 12, 1809 Died:April 15, 1865 Assasinated at the age of 56. Abraham Lincoln, at the age of 33, married Mary Todd, age 23, on November 4, 1842. Betsy Ross made the first American flag in 1776 or 1777.
March 9, 2012

Geometry
A man is sitting by a pool. He looks up at an angle of elevation of 18 degrees at a bird in a nest at the top of a tall tree. Since the man is 200 feet from the bird's tree. How tall is the tree?
March 9, 2012

Geometry
A tool maker is working on a shed roof. He looks down at a 42 degree angle of depression at the shadow of the shed. If his shed is 24 fett tall, how long is the shadow?
March 9, 2012

Geometry
The ramp on the back of a mvoing van is 3 feet high and rises at an angle of 25 degrees. How high is the ramp? Round to the nearest foot.
March 9, 2012

Mr. Brown has a piece of hose 11 ft long. He is going to cut it into 15 equal-length pieces. How long will each piece be?
January 19, 2012

English College composition I
This tip always helped me to come up with a thesis statement for an essay: 1-Name the problem and 2-suggest an answer to the problem. Example-Bullying has become a nationwide epidemic; but as parents and educators, we can and should do something about it. The problem is that ...
January 15, 2012

Math
A square flower garden and a sidewalk around the garden have an area of 400 ft2. The sidewalk has a width of 3 ft. What is the length of one side of the flower garden?
January 9, 2012

Geometry
Quadrilateral WXZY is a square. If YX = 30 and WT = 2x – 7, then find the value of x. (Points : 2) 4 18.5 11 15 or Quadrilateral JKLM is a rhombus. The diagonals intersect at N. If the measure of angle JKL is 104o, find the measure of angle JKN. (Points : 2) 52° 104&...
December 13, 2011

physics
A 29 kg chair initially at rest on a horizontal floor requires a 375 N horizontal force to set it in motion. Once the chair is in motion, a 345 N horizontal force keeps it moving at a constant velocity. The acceleration of gravity is 9.81 m/s2 . a) What is the coefficient of ...
November 17, 2011

fundamental of organizational communication
by helping me come up with a communication scenario
November 10, 2011

fundamental of organizational communication
can some assist me with this assignment? It is time to choose an organizational communication scenario to use as the case study for your final project. Most learners choose a problem or issue they are experiencing at their current workplace, but you may use any of the ...
November 10, 2011

science
Listed below are six mixtures. Identify physical properties of the components that allow you to separate them. Then, explain the method you would use to separate the components. Mixture 1: Salt dissolved in water Physical Properties: Density Method of Separation: Use a spoon ...
October 24, 2011

Statistics
95% CI = (6.21, 7.69)
October 9, 2011

Statistics
I have provided information from #3-5 in order to answer #6.. 3. Give the mean for the mean column of the Worksheet. Is this estimate centered about the parameter of interest (the parameter of interest is the answer for the mean in question 2)? The Mean for Column “mean&#...
October 7, 2011

Statisitcs
I have given you the information from 2-4 in hopes to help with the answer for #6.. Thank you! 2. Calculate the mean and standard deviation of the probability distribution created by rolling a die. Either show work or explain how your answer was calculated. x 1 2 3 4 5 6 sum p...
October 6, 2011

Statistics
Compare the 95% and 99% confidence intervals for the hours of sleep a student gets. Explain the difference between these intervals and why this difference occurs. 95% confidence intervals: 6.214, 7.686 99% confidence intervals: 5.944, 7.956
October 5, 2011

Statistics
Compare the 95% and 99% confidence intervals for the hours of sleep a student gets. Explain the difference between these intervals and why this difference occurs. 95% confidence intervals: 6.214, 7.686 99% confidence intervals: 5.944, 7.956
October 5, 2011

Satistics
5. Give the standard deviation for the mean and median column. Compare these and be sure to identify which has the least variability? Standard deviation of Mean = 0.476169 Standard deviation of Median = 0.753937
October 5, 2011

Statistics
If someone gives you a sample mean and a standard deviation, you can find a confidence interval. But what if someone gives you the confidence interval instead and asks you to find the sample mean? How can you do that? Here's an example: a 95% confidence interval for a mean...
October 4, 2011

science
A certain infant analgesic medicine has a single dose of 36.0 mg/kg of body weight. How much analgesic will be administered in a single dose for an 18.4 pound toddler
October 2, 2011

chem
the answer to this question is d :)
September 15, 2011

statistics
Suppose you are given data from a survey showing the IQ of each person interviewed and the IQ of his or her mother. That is all the information you have. Your boss has asked you to put together a report showing the relationship between these two variables. What could you ...
September 7, 2011

geometry
find the area of the equilateral triangle if a side is 8 radical 3m. round to the nearest who number
July 14, 2011

math
Find the GCF of the polynomial 44x^6+8x^5
July 11, 2011

math
so a=40 and c=35 what is b? of a right triangle. i know you use a^2+b^2=c^2 and i know where to put the information, but i dont know what to do after.
July 7, 2011

math
i mean approximate* not appropriate.
July 7, 2011

bunn high
find the approximate length of the leg of a right triangle with one leg length 8 and hypotenuse lenth 19
July 7, 2011

bunn high
the length of a right triangle. find the hypotenuse if a=5 b=14 (legs)
July 7, 2011

Bunn high
write an equation for the line that is parallel to the given line and that passes through the given point y=1/2x-8; (-6,-17)
July 5, 2011

statistics
For a population that has a standard deviation of 10, figure the standard deviation of the distribution of means for samples of size- (b) 3.
June 13, 2011

writing
i dont understand what u said, writeteacher. can you show me? Can u proofread and show me how to fix me my writing? Philip Malloy Have you ever watched the movie? In the story, “Nothing but the truth,” by Avi, a boy named Philip Malloy had many traits to describe his...
May 17, 2011

Writing
Can you show me how you would write this writing and il go back and do it myself?
May 16, 2011

Writing
Can you proofread my writing? Philip Malloy Have you ever met a devious little boy? Well, I have. In the story “Nothing but the truth,” by Avi, a boy named Philip Malloy was very devious. Philip Malloy was a funny person, then a stubborn person. There are many ways ...
May 16, 2011

World History
What freedoms of Napoleon's Day were the French people willing to sacrifice
May 15, 2011

Math
How do you find out what percent one number is of another????
May 2, 2011

physics
Calculate the frequency in hertz and cm-1, as well as the energy in joules and electron volts of an x-ray photon with a wavelength of 4.55 angstroms.
April 5, 2011

geometry
prove that if the lengths of two sides of a and b, triangle are a and b respectively, then the lengths of the corresponding altitudes to those sides are in the ratio b/a.
February 6, 2011

chemisty
A mixture contains only NaCl and Al2(SO4)3. A 1.76-g sample of the mixture is dissolved in water, and an excess of NaOH is added, producing a precipitate of Al(OH)3. The precipitate is filtered, dried, and weighed. The mass of the precipitate is 0.126 g. What is the mass ...
February 5, 2011

chemisty
A mixture contains only NaCl and Al2(SO4)3. A 1.76-g sample of the mixture is dissolved in water, and an excess of NaOH is added, producing a precipitate of Al(OH)3. The precipitate is filtered, dried, and weighed. The mass of the precipitate is 0.126 g. What is the mass ...
February 5, 2011

medicine
Indicate at which point flat-of-the-curve medicine is experienced in the following example (imagine that antibiotics have been prescribed for a given population of 1,000 elderly persons).
January 31, 2011

Conductivity
January 12, 2011

Math
okay so i feel like a dummie for not knowing this but i need the answer FAST! Which property would allow you to use mental computation to simplify the problem 27 + 15 + 3 + 5? 1) commutative property of addition 2) distributive property 3) additive identity 4) additive inverse...
January 3, 2011

high school (math)
Match the mathematical expression with its translation. 1. the product of two numbers 2. y divided by x 3. six less than a number is y 4. x subtracted from y 5. the sum of two numbers is six 6. x minus y 7. the sum of x and y 8. x divided by y 9. six times a number equals y 10...
December 21, 2010

chemistry
October 9, 2010

chemistry
Suppose 70.00 mL of a lithium hydroxide, LiOH, solution requires 55.42 mL of a 0.1050 M solution of propanoic acid, C2H5COOH, for neutralization. LiOH + C2H5COOH ® C2H5COOLi + H2O What is the concentration of the base solution? 0.08313 M 0.1663 M 0.3325 M 0.6650 M Question...
October 9, 2010

a group of fifth grade students are going camping. They will hike from Wellington to Ruapehu. Then they will follow a trail for another 1/2 mile to their campsite. The distance from Wellington to Ruapehu is 200 miles. About how long would it take the students to arrive at ...
September 15, 2010

math
a group of fifth grade students in New Zealand are going camping. They will hike from Wellington to Ruapehu. Then they will follow a trail for another 1/2 mile to their campsite. I was able to calculate the distance from Wellington to Ruapehu by using the map scale. It is 200 ...
September 15, 2010

How do i solve this? Write a rule for the function. Input,x 0 1 2 3 Output,y 3 5 7 9
August 12, 2010

ART
Megan did you find the right answer for the Art History from August 5,2010. If you do can you share it with me? I have the same questions and it is kind of hard for me do to English is my second language. Thanks
August 5, 2010

math
The answer is B Explanation: 3/20*2/19*1/18=1/(3*20*19)=1/1140
May 17, 2010

social studies
what is the difference between Union and Seccession ? In 1860
April 27, 2010

algebra 2
Boiling Lake is a small lake on the island of Dominica. The water temperature of the lake is between 180*F and 197*F. Write a compound inequality for this temperature range. [Graph the inequality.]
February 21, 2010

i need help on Chemistry and i am in 7th grade i don't know how to do some problems and i would like to know how to translate statements into equation form?
January 22, 2010

physics
A 1.6 kg particle moving along the x-axis experiences the force shown in the figure. The particle's velocity is 4.2 m/s at x = 0 m. The figure or graph has F (N) along the y axis and velocity along the x axis. A diagonal line drops from positive 10 force to -10 force from ...
December 2, 2009

physics
A particle of mass m starts from x subscript o = 0 m with V subscript o > 0 m/s. The particle experiences the variable force F subscript x = F subscript o sin (cx) as it moves to the right along the x-axis, where F subscript o and c are constants. I have answered the first ...
December 2, 2009

physics
A particle of mass m starts from x subscript o = 0 m with V subscript o > 0 m/s. The particle experiences the variable force F subscript x = F subscript o sin (cx) as it moves to the right along the x-axis, where F subscript o and c are constants. I have answered the first ...
December 1, 2009

physics
Please explain to me how to integrate-I am unsure exactly what this means in this problem Thanks
December 1, 2009

physics
A 1.6 kg particle moving along the x-axis experiences the force shown in the figure. The particle's velocity is 4.2 m/s at x = 0 m. The figure or graph has F (N) along the y axis and velocity along the x axis. A diagonal line drops from positive 10 force to -10 force from ...
December 1, 2009

science
A component synthesized by photosynthetic producerrs on which all aerobic consumers depend is what
November 30, 2009

algebra
-6-11x=-136 solve
November 17, 2009

math
what is x+7/4=88
November 13, 2009

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