Mariel
Popular questions and responses by Mariel
physics
a light string 4 meters long is wrapped around a solid cylindrical spool with a radius of 0.075 m and a mass of .5 kg.a 5kg mass is then attached to the end of the string, causing the string to unwind from the spool. a. what is the angular acceleration of
asked on December 3, 2010 
Geometry
Find the sum of the measures of the exterior angles of a convex 39gon?
asked on March 21, 2013 
math
From a square piece of cartolina with a side of 60cm, liza cut the biggest cross. What is the area of the cross?
asked on January 21, 2016 
Calculus (math)
A group of engineers is building a parabolic satellite dish whose shape will be formed by rotating the curve y=ax2 about the yaxis. If the dish is to have a 8foot diameter and a maximum depth of 2 feet, find the value of a and the surface area (in square
asked on December 14, 2014 
Calculus (math)
A painting in an art gallery has height h and is hung so its lower edge is a distance d above the eye of an observer (as in the figure). How far from the wall should the observer stand to get the best view? (In other words, where should the observer stand
asked on November 7, 2014 
Calculus (math)
A boat leaves a dock at 2:00 P.M. and travels due south at a speed of 15 km/h. Another boat has been heading due east at 20 km/h and reaches the same dock at 3:00 P.M. How many minutes past 2:00 P.M. were the boats closest together?
asked on November 7, 2014 
science
Consider the following reaction: CH3X + Y > CH3Y + X At 25ºC, the following two experiments were run, yielding the following data: Experiment 1: [Y]0 = 3.0 M [CH3X] Time (hr) 7.08 x 103 M 1.0 4.52 x 103 M 1.5 2.23 x 103 M 2.3 4.76 x 104 M 4.0 8.44 x
asked on February 20, 2012 
Thermo
Calculate the equilibrium constant for the reaction NiO(s) + H2(g) → Ni(s) + H2O(g) at 1023K from the following data: Ni(s) + ½ O2(g) → NiO(s) ΔG0 = 244,555 + 98.53 T [J] H2(g) + ½ O2(g) → H2O(g) ΔG0 = 246,438 + 54.81 T [J] Could a pure nickel
asked on November 10, 2015 
Physics
Find th resultant and speed direction of the airplane relative to the ground.... AN airplane is heading west at velocity 950km/hr and wind is blowing northward at velocity of 55.o km/hr
asked on September 1, 2010 
Calculus (math)
A conical water tank with vertex down has a radius of 12 feet at the top and is 23 feet high. If water flows into the tank at a rate of 20 {\rm ft}^3{\rm /min}, how fast is the depth of the water increasing when the water is 12 feet deep?
asked on October 25, 2014 
Math degrees
A Ferris wheel has spokes that divide the wheel into 9 equal sections. What is the measure of the angle of the angle for each sections
asked on April 12, 2018 
Physics
The Angle of depression of Boat A from the top of a cliff which is 32 m high is 24 degree 15 minutes .The angle of depression of Boat B from the same point is 18 degree 12 minutes .Find distance between the two side with diagram
asked on July 30, 2014 
math
Solve the following algebraically. Trial and error is not an appropriate method of solution. You must show all of your work and write answers in rational form. 3 x + 7 = 9 Answer: x = 2/3 Show your work here: 3 x + 7 = 9 7  7 3/3 x = 2/3 X = 2/3 b)
asked on July 27, 2008 
math
is one half greater than three fourths
asked on July 25, 2011 
Geometry
ABCD is a rectangle with B(4,2) andD (10, 6). find the coordinates of A. Please help and tell me how you got it so I can understand
asked on March 21, 2013 
agebra
Sam and Chris went to “Lots O Fun” to play laser tag and video games for Chris’s birthday. Sam played 3 games of laser tag, 5 video games, and spent $17 total. Chris played 4 games of laser tag, 7 video games, and spent $23 total. How much does one
asked on November 5, 2010 
science
true or false? the graph distance versus time for n object moving at consatant speed is a curve.
asked on September 18, 2008 
Geometry
ABCD is a rectangle with B(4,2) andD (10, 6). find the coordinates of A. Please help and tell me how you got it so I can understand
asked on March 21, 2013

calculus
A lamp post 3m high is 6m from a wall. A 2m man tall is walking directly from the post toward at 2.5m/s. How fast is his 1.5 from the wall
posted on May 22, 2017 
HELLLPPPPPPPP!!!!!!
48 pieces of apples
posted on February 12, 2017 
Calculus
64π
posted on January 24, 2016 
Math(angle of depression) i need help please..
hey can you explain please step by step i'm really sorry but i really need your help
posted on July 30, 2014 
Geometry
Okay thank you do much!:)
posted on March 21, 2013 
Geometry
I'm sorry I put it wrong B(4,6) c(4,2) d(10,2)
posted on March 21, 2013 
Geometry
Thank you so much, I understand this now! :)
posted on March 21, 2013 
Geometry
Show*
posted on March 21, 2013 
Geometry
Thank you but also how would I sow my work for this?
posted on March 21, 2013 
Statistics
I do not understand what I need to do her I need some help.
posted on February 10, 2012 
precal
find positive and negative coterminal angle for 55(pi)/18
posted on January 12, 2012 
algebra
Solve the following algebraically. Trial and error is not an appropriate method of solution. You must show all of your work and write answers in rational form. 3 x + 7 = 9 Answer: x = 2/3 Show your work here: 3 x + 7 = 9 7  7 3/3 x = 2/3 X = 2/3 b)
posted on July 27, 2008 
Please Check My Math Work
Solve the following algebraically. Trial and error is not an appropriate method of solution. You must show all of your work and write answers in rational form. 3 x + 7 = 9 Answer: x = 2/3 Show your work here: 3 x + 7 = 9 7  7 3/3 x = 2/3 X = 2/3 b)
posted on July 27, 2008