# 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**

Repeated addition is like 4+4+4

*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*

**5th grade algebra**

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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