Tuesday
September 2, 2014

Posts by Declan


Total # Posts: 24

spanish
what does A los niños les gusta _____ con muchos colores mean?
May 4, 2012

Chemistry
how do I find the pH of a buffer solution given that 0.010M NH3 mixed with 0.0030M NH4Cl. Also... a 0.010M HF solution is mixed with 0.030M KF. FIND THE pH of this mixed solution.
March 25, 2012

precalc
1/x is less than or equal to 4/x^3
February 5, 2012

equation for circle
I got everything the same except the radius. How did you get 8?
February 5, 2012

equation for circle
find the equation of a circle. the endpoints of the diameter of a circle are (3,-2) and (7,-6).
February 5, 2012

math
Solve for the slope of the 9x-8y=3. You get y= 9/8x - 3/8. So your slope is 9/8. Because the line is parallel. You then use point slope formula to get equation of line in y=mx+b form.(slope form). So y-y1=m(x-x1) y-(-7)=9/8(x-6) y+7=9/8(x-6) So y=9/8x -55/4 I did the math in ...
February 5, 2012

math
find tangent line to the circle x^2 + y^2=100 at point (-6,8)
February 5, 2012

Chemisty
0.951g/L
February 4, 2012

Chemistry(Please help, thank you)
I mean an error on the second reaction.
February 4, 2012

Chemistry(Please help, thank you)
You have an error on the product side of the third reaction. The reaction produces SnCl4. I was wondering what was wrong Haha. Anyway... Hess's Law...Oh Joy! If we look at the given reactions we see that we must flip three of the reactions to produce the overall reaction ...
February 4, 2012

Chemistry
A compound decomposed by first order rxn. The concentration of compound decreases from .1180 M to .0950 M in 5.2 min. What fraction of the compound remains after 6.7 minutes?I'm thinking I set up a proportion maybe. Any ideas how to tackle this problem?
January 23, 2012

Math
x+2x=564 3x=564 x=188 376 and 188
November 7, 2011

fraction 10-1 math
3 red canoes 4 blue canoes 3/7
November 7, 2011

Math
x= clownfish 3x=angelfish x+3x=48 4x=48 x=12 12 clowns....36 angels
November 7, 2011

Trig
(sec x - tanx)^2 = (1-sinx)/(1+sinx) use these substitutions sin²(x) + cos²(x) = 1 cos²(x) = 1 - sin²(x) (sec(x) - tan(x))² =(1/cos(x) - sin(x)/cos(x))² = (1-sin(x))² / cos²(x) = (1-sin(x))² / (1 - sin²(x)) = (1-sin(x))²...
November 7, 2011

Mathematics
Let Mary=Y Peter=X Mary is 2/3 Peter's age therefore: Y =2/3X two years ago..mary was 1/2 peter's age in 5 years..we write the equation as: (Y) -2 = 1/2(x+5) substitute Y=2/3X 2/3X - 2 = 1/2x + 5/2 solve for X X=27.....therefore Y=18
November 7, 2011

Chemistry
lowest metallic Br P N Mg highest metallic K This is because as you move left to right on the periodic table, the metallic character of elements increases, and the metallic character decreases as you move down the periodic table.
November 7, 2011

Science
Cell Wall does not belong Nucleus, Mitochondria, Vacuole,...ALL OF THESE ARE LOCATED inside the CELL
November 7, 2011

6th grade spelling
summary voluntary conclude allegiance zeros
November 7, 2011

Math
correct
November 7, 2011

algebra
14 +5x+2z+32+4z-2x= 3x+6z+46
November 7, 2011

physics
With the forces in equilibrium if a stationary climber is using a rope which is 60 degrees to the vertical, the rock face is at 30 degrees to the vertical, and the weight of the climber in cluding equipment is 850N. What is the tension on the rope? What is the force exerted on...
April 18, 2011

physics
Using trigonometry A patients leg is raised at an angle of 45 degrees and a traction force of 50N is applied in line with the leg; Find the vertical component of this force? Find the horizontal component of this force?
April 18, 2011

physics
A patient of mass 75kg sits in a wheelchair of mass 30kg. What is the force needed to push both up a 30 degree slope? If the carer stops on the 30 degree slope and applies the brake, what is the magnitude and direction of the frictional force preventing the wheelchair from ...
April 18, 2011

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