Wednesday
December 7, 2016

# Posts by irma

Total # Posts: 36

Math
Find the distance between the two points: P1= ( -1,0) and P2= (2,4)
September 25, 2016

Algebra
An object is dropped from a bridge. Find the distance the object has fallen when its speed reaches 132 ft/s. Use the equation v = 64d , where v is the speed in feet per second and d is the distance in feet.
July 6, 2016

Math
As part of a conservation effort for a lake, 70 fish were caught, tagged, and then released. Later, 80 fish were caught from the lake. Four of these 80 fish were found to have tags. Estimate the number of fish in the lake.
June 23, 2016

Math
Triangles ABC and DEF are similar. Find side AC. Round your answer to the nearest tenth. cm
June 9, 2016

Math
The sum of two numbers is five. The sum of the squares of the two numbers is thirteen. Find the two numbers. (Enter your answers as a comma-separated list.)
May 23, 2016

Physics
A standard man uses crutches. The crutches each make an angle of 25 degrees with the vertical. Half the standard man's weight is supported by the crutches; Assuming the standard man is motionless, find the magnitude of the force supported by each crutch.
December 14, 2015

chemistry
What is the equation that represents the reaction of esterification of crystal violet? Thanks
March 4, 2015

math
how you do percentages?
November 17, 2014

math
The stopping distance (s) of a car varies directly as the square of its speed (v). If a car traveling at 50 mph requires 170 ft to stop, find the stopping distance for a car traveling at v2 = 55 mph.
November 17, 2014

math
If a car traveling at 50 mph requires 170 ft to stop, find the stopping distance for a car traveling at v2 = 60 mph.
November 17, 2014

algebra
If a car traveling at 50 mph requires 170 ft to stop, find the stopping distance for a car traveling at v2 = 60 mph.
November 17, 2014

math
What percent of 36 is 90?
June 29, 2014

math
a square sheet of tin 30cm on a side is to be used to make an open - top box by cutting a small square of tin from each corner and bending up the sides. how large should be the square cut from each corner to make the box's volume as large as possible
May 12, 2013

Math Technology
A pilot is flying to a destination 700 miles away at a bearing of 105 degrees. The cruising speed of the plane is 500 mile per hour and the the wind is blowing between 20 and 30 miles per hour at a bearing of 30 degrees. At what bearing should the pilot aim the plan to ...
April 4, 2013

geometry
what is the distance between N(5,2),K(-2,8)
December 6, 2011

math
pauline has 35 cups of flour. She makes cakes that require 2 1/4 cups each. if she makes as many such cakes as she has flour for, how much flour will be left over?
March 29, 2011

Math
what is 1/5 in base 5?
March 29, 2011

Chemistry
Urea, (NH2)2CO, is dissolved in 73.5 g of water. The solution freezes at -0.095°C. How many grams of urea were dissolved to make this solution? (Answer must be in grams)
March 29, 2011

Chemistry
In a mountainous location, the boiling point of pure water is found to be 95°C. How many grams of sodium chloride must be added to 9 kg of water to bring the boiling point back to 99°C? Assume that i = 2. So what will my answer be in grams?
March 29, 2011

math
Yes, thanks so much! Irma
March 25, 2011

math
March 25, 2011

math
Write a word problem for 5 x 2 1/2 which requires the use of repeated addition model.
March 25, 2011

how do I solve 3/4 +1/2= 1 1/y y=?
May 11, 2010

algebra
If LOGx (A)=0.7 and LOGx (B) =0.5 how do I solve LOGx (B/A)
April 5, 2010

algebra
ln(3x-4)-Ln(x+1)=Ln(2)
April 5, 2010

college algebra
Am not sure how to plug in e^e on calculator
April 5, 2010

college algebra
3^x-2=11
April 5, 2010

college algebra
Do not know how to evaluate: e^e
April 5, 2010

college algebra
Solve: 2^x-3= 32^x+1
April 5, 2010

Economics
If at least 1 of the conditions for a perfectly competitive market is not met, does this invalidate the model of perfect competition?
April 4, 2010

intermediate algebra
A farmer with 3000 feet wants to enclose a rectangular plot that borders on a straight highway. If the farmer does not fence the side along the highway, what is the largest area that can be enclosed?
March 8, 2010

intermediate algebra
A farmer with 3000 feet of fencing wants to enclose a rectangular plot that borders on a straight highway. If the farmer does not fence the side along the highway, what is the largest area that can be enclosed?
March 8, 2010

chemistry
P total = 0.45 + 0.25 + 0.60 = 1.3
September 25, 2009

chemistry
What is the total pressure of a gas mixture that contains hydrogen at 0.45 atm, nitrogen at 0.25 atm, and argon at 0.60atm
September 25, 2009

chemistry
What is the total pressure of a gas mixture that contains hydrogen at 0.45 atm, nitrogen at 0.25 atm, and argon at 0.60atm
September 25, 2009

chemistry
what are the reasons why the Cu(II) solution has to be titrated immediately after addition of KI?
January 31, 2008

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