Jeffrey
Popular questions and responses by Jeffrey
Trigonometry
A building is 50 feet high. At a distance away from the building, an observer notices that the angle of elevation to the top of the building is 41 degrees. How far is the observer from the base of the building?
asked on June 1, 2015 
stats
Among the contestants in a competition are 44 women and 26 men. if 5 winners are randomly selected, what is the probability that they are all men?
asked on July 14, 2010 
Economics
Determine whether each of the following would cause a shift in the aggregate demand curve, the aggregate supply curve, neither, or both. Which curve shifts, and in which direction? What happens to aggregate output and the price level in each case? a. The
asked on September 6, 2006 
math
Michael and mateo begin running around a circular track from the starting point at the same time. it takes Michael 48 seconds one lap around the track. it takes mateo 60 seconds to complete one lap around the track how many minutes does it take before the
asked on December 15, 2013 
Math
Repeat the following procedure for the four given numbers. Add 7 . Double the result. Subtract 4 . Divide by 2. Subtract the original selected number. The 1st number is 1 . The result is 5 . The 2nd number is 4 . The result is 5 . The 3rd number is 7 . The
asked on January 10, 2016 
Statistics
According to Internet security experts, approximately 90% of all email messages are spam (unsolicited commercial email), while the remaining 10% are legitimate. A system administrator wishes to see if the same percentages hold true for the email traffic
asked on March 10, 2020 
history
Which accurately describes the actions of Hernán Cortés during the Age of Discovery? A Upon arriving in the Americas, Cortés conquered the Mayan Empire and gained control of presentday Panama. B Upon arriving in the Americas, Cortés conquered the Hopi
asked on December 19, 2019 
math geometry
The area of a rectangular wall of a barn is 80 square feet. The length is 12 feet longer than twice its width. Find the length and width of the barn.
asked on September 15, 2016 
Statistics
A city ballot includes a local initiative that would legalize gambling. The issue is hotly contested, and two groups decide to conduct polls to predict the outcome. The local newspaper finds that 53% of 1200 randomly selected voters plan to vote "yes,"
asked on October 28, 2013 
Statistics
A city ballot includes a local initiative that would legalize gambling. The issue is hotly contested, and two groups decide to conduct polls to predict the outcome. The local newspaper finds that 53% of 1200 randomly selected voters plan to vote "yes,"
asked on October 27, 2013 
Probability as a Fraction
In a bag there are 7 red tiles, 3 blue tiles, and 2 purple tiles. How many and what color tiles would you have to add to the bag so that the probability of picking red is 1/3?
asked on April 24, 2011 
Honors Geometry
I'm stuck on these 2 problems. My Geometry teacher won't help me. What is the inverse of the Isosceles Triangle Theorem (ITT)? What is the contrapositive of the Isosceles Triangle Theorem (ITT)?
asked on January 18, 2008 
Math
An automobile purchased for $31,000 is worth $2800 after 6 years. Assuming that the car's value depreciated steadily from year to year, what was it worth at the end of the third year?
asked on January 13, 2016 
Algebra
I am working on a review worksheet and there are 2 problems I can't remember how to do. Each question has 6 other questions, so helping me with these will remind me how to do the others! Thank you!! 1.2(x+5) = 1.6(2x+5) and Solve for y a(y+c) = b(yc)
asked on August 22, 2015 
Statistics
In 1998 a San Diego Reproductive clinic reported 49 live births to 207 women under the age of 40 who had previously been unable to get pregnant. Using the 90% confidence interval calculated above, would it be misleading for the clinic to report a success
asked on October 27, 2013 
calculus
For the function r(x)=x3+6x2x2−36, find the following. a. the y  intercept b. the x  intercepts c. all horizontal asymptotes. y = d. all vertical asymptotes. x =
asked on May 29, 2013 
math x
8. The Chicago Public School system has about 680 schools. About 130 of the schools will be closed. If five schools are chosen at random find the probability that at least 3 of them will be closed.
asked on April 3, 2013 
calculus
A spherical balloon is being inflated so that its volume is increasing at the rate of 200 cm3/min. At what rate is the radius increasing when the radius is 15 cm.
asked on July 31, 2011 
Technology
Would the president of a technologies workers union be considered a stakeholder for a telecommunication company?
asked on January 6, 2011 
thesis statement
whats a good thesis statement on cooking
asked on August 30, 2010 
Math
Which shapes have more than one line of symmetry? Explain your thinking
asked on February 8, 2017 
Geometry
The volume of a rectangular prism is 960 cubic inches. If the dimensions of the base are doubled and the height remains the same to create a new prism, what will be the volume of the new rectangular prism in cubic inches?
asked on July 19, 2015 
Circles
2 circles have different radius touch at a point and at the point has 1 common tangent and another common tangent touching the circles at different points other than the first
asked on January 15, 2015 
Graphing
The line l1 passes through the points (3,3) and (5,2). The line is the graph of the equation Ax + By = C, where A, B, and C are integers with greatest common divisor 1, and A is positive. Find A + B+ C.
asked on December 31, 2014 
College physics
When a 0.15 kg baseball is hit, it approaches the bat with a speed of 20 m/s and undergoes an elastic collision. (a) What is the impulse delivered to the bat by the ball? (b) If the baseball is in contact with the bat for 1.3 ms, what is the average force
asked on October 24, 2014 
Math
If 2 1/3 feet of silver ribbon cost $.21, how much will 9 feet cost
asked on June 13, 2014 
chemistry
Q: Calculate the unknown molar concentration of CH3NH2 in MeOH titrated against a known molar concentration of HCl ? Could you please answer this, there are lots of examples around calculation PH of two known's but not so much of unknown concentration.
asked on August 24, 2012 
math
A balloon rises at a rate of 3 meters per second from a point on the ground 30 meters from an observer. Find the rate of change of the angle of elevation (in radians per second or rad/sec) of the balloon from the observer when the balloon is 30 meters
asked on July 25, 2011 
math
A right circular cylinder is to be designed to hold 750 cm3 of processed milk, and to use a minimal amount of material in its construction. Find the dimensions for the container.
asked on July 25, 2011 
math
A cardboard box manufacturer wishes to make open boxes from rectangular pieces of cardboard with dimensions 40 cm by 60 cm by cutting equal squares from the four corners and turning up the sides. Find the length of the side of the cutout square so that
asked on July 25, 2011 
physics
static friciton is greater than sliding friction prove
asked on July 19, 2011 
algebra
this tells me to rewrite the expression using the distributive property and then simplify plz help me and show me the work here are the questions. 15(f+1/3) 16(3b0.25) (c4)d
asked on August 25, 2010 
JJ
A 30.84 mL volume of 0.128 M NaOH is required to reach the phnolphthalein endpoint in the titration of a 5.441 g sample of vinegar. Calculate % acetic acid in the vinegar.
asked on August 25, 2010 
CHEMISTRY
Assuming the density of a 5% acetic acid solution is 1.0 g/mL,determine the volume of the acetic acid solution necessary toneutralize 25.0 mL of 0.10M NaOH.
asked on August 25, 2010 
Pre algebra
y/2  5y/6 + 1/3=1/2
asked on May 8, 2010 
CHEMISTRY
In some solid calcium carbonate samples, calcium bicarbonate, Ca(HCO3)2, is also present. Write a balanced euation for its reaction with hydrochloric acid.
asked on March 8, 2010 
algebra
I need help!!! 3/2,1/2, 1/6,1/8,... I need to determine if this sequence is arithmetic, geometric, or neither, then I need to find the ninth term
asked on April 19, 2009 
Mathematics
In a class of 100 students, 50 studied chemistry only, 30 studied Agric only, 40 studied biology only. 30 study biology and chemistry. How many study all 3 subjects?
asked on May 20, 2020 
math
2y4=14
asked on June 27, 2019 
math
Find the radius and the diameter to the nearest hundredth when C = π yd. Use 3.14 for π.
asked on April 27, 2018 
ALGEBRA
A SPINNER WITH FOUR EQUAL SECTIONS NUMBERED 3,5,7 AND 8 IS SPUN TWICE. WHAT IS THE PRBABILITY THAT AN ODD NUMBER IS SPUN THE FIRST TIME AND AN EVEN NUMBER IS PUN THE SECOND? IS THE ANSWER 3/4? IS IT THAT EASY OR NOT?
asked on May 23, 2016 
physics
1. An electric pump, used to obtain water from 20 metres below the ground, is marked 5000W. a) If the pump operates as rated, how much energy is used to pump water every second? b) Describe the energy conversions that take place when the pump is used. c)
asked on April 6, 2015 
pre algebra
the ratio of boys to girls in an art class is 3.5. there are 12 boys in the class. how many girls are in the class?
asked on October 4, 2011 
7 Mathematics
A team of 4 golfers scored 69,73,70, and 74 on the first round on a par 72 course. They reduced their team score by 3 on the second round. a) How many strokes above or below par was the team score on the first round? b) How many strokes about or below par
asked on May 16, 2011 
math
Given the following equation x,y data pairs find the least squares equation for these data. Use 3 decimal places. Y equals what + what x(3,3)(4,5)(6,8,)
asked on January 19, 2011 
math
given the following equations x,y data pairs find the least squares equation fo these data. use 3 decimal places. Y equals what + what x (3,3)(4,5)(6,8)
asked on January 19, 2011 
Physics
A lumberjack (mass = 98 kg) is standing at rest on one end of a floating log (mass = 245 kg) that is also at rest. The lumberjack runs to the other end of the log, attaining a velocity of +2.7 m/s relative to the shore, and then hops onto an identical
asked on November 14, 2010 
CHEMISTRY
A 31.43 mL volume of 0.108 M NaOH is required to reach the phnolphthalein endpoint in the titration of a 4.441 g sample of vinegar. Calculate % acetic acid in the vinegar.
asked on August 25, 2010 
algebra
I need help!!! 3/2,1/2, 1/6,1/8,... I need to determine if this sequence is arithmetic, geometric, or neither, then I need to find the ninth term
asked on April 19, 2009 
Chemistry Stochiometry
The conversion factor for deriving the number of moles of salicylic acid, C7H6O3, from a given number of grams of salicylic acid is...
asked on February 28, 2008 
chemistry
Could someone help me with this please? In chemistry, we did a lab in which he put brands of commerical vinegar in a microplate. We put in 10 drops of each vinegar in each plate thinger then we added 1 drop of phenolphthalein and then put in as many drops
asked on May 14, 2007 
Social Studies
Is there a desert in Italy? http://www.google.com/search?q=map+italy&rls=com.microsoft:enus:IESearchBox&ie=UTF8&oe=UTF8&sourceid=ie7&rlz=1I7SUNA Nope. =)
asked on April 23, 2007

Math
LOL
posted on February 14, 2019 
Math
excuse ,'teacher I did not do that one' teacher:ok why student: my grandma is in the hospital and my mom said you will do your homework later and I was in the hospital the whole day and had go to sleep after
posted on February 14, 2019 
math
Well u better shut the heck up cause I don't care kid
posted on December 9, 2018 
math
I agree
posted on December 9, 2018 
MATH
Help everyone!!!!!!!!!!!!!!!!!!!!!!!!!!!
posted on December 6, 2018 
MATH
Wtf I'm confused isn't it 40 on mine their is no 30
posted on December 6, 2018 
geometry
sosos
posted on February 28, 2018 
Physics
C,A,B
posted on January 4, 2018 
social studies
Joy is right. I got a 100%
posted on October 6, 2017 
Algebra 1
y=10/x
posted on September 14, 2017 
math
45
posted on February 24, 2017 
chem 1
Molarity=number of moles(n)/volume also n=mass(m)/molar mass(M) therefore, Molarity(C)=mass/molar mass*volume C=58.44g/0.5L(58.44g/mol) C=2moles per litre
posted on January 23, 2017 
life orientation
this it put or result people's life in danger because of insufficient of natural resource
posted on April 28, 2016 
Sociology
The socialization process ends with the onset of puberty.
posted on March 6, 2016 
Math estimation problem
It is 100 for estimation if yo are dividing.
posted on October 22, 2015 
debate
resolved that capital punishment in the philippines in affirmative side
posted on October 12, 2015 
Algebra
Got it! Thank you Steve!
posted on August 22, 2015 
algebra
6P4 = 6!/(64)! =6*5*4*3*2*1/2! =6*5*4*3*2*1/2*1 =720/2 =360. (/)represents division. (*)represents multiplication. Thanks. I hope it was super helpful.
posted on April 24, 2015 
Chemistry
thanks saizad
posted on April 12, 2014 
Statistics
Thank you, but I'm still confused. So is there not enough info to answer this question? Thank you for your time.
posted on October 28, 2013 
calculus
The function is x^3+6x^2/x^2+36.
posted on May 29, 2013 
science
dilute
posted on February 12, 2013 
chemistry
thanks, sorry, 10ml of the unknown mixture was titrated methyl orange was used it took 7.5ml of 1M HCl (.0074Mol ?) so this means .00074Mol CH3NH2 / ml ?
posted on August 26, 2012 
algebra
thank you
posted on August 25, 2010 
Honors Geometry
Okay. I figured the problem out now. Thanks for your help!
posted on January 18, 2008 
Honors Geometry
Okay, the ITT is If a triangle has two congruent sides, then the angles oppositeof those sides are congruent
posted on January 18, 2008 
Honors Geometry
hmm.. okay, but i'm not really seeing how that goes with the ITT
posted on January 18, 2008