Saturday
December 20, 2014

Posts by Ruben


Total # Posts: 32

math
88+11
October 6, 2014

algebra 2
I=nE/R+nr solve for R.
May 8, 2014

science
4.947m
September 25, 2013

Geometry
Two angles are supplementary if the sum of their measures is 180∘. If the measure of one angle is 16x degrees, represent the measure of its supplement as an expression of x.
August 29, 2013

Math
(a) sqrt(23) (b) sqrt(9) (c) (10/21) (d) (12/4) (e) 58 (f) −33 (g) 0 From the list above, determine the corresponding letters of the numbers that are (a) whole: (b) integers: (c) rational:
August 28, 2013

physics
please help !!!
April 10, 2013

physics
The auroral zone is defined by the last field line from the Earth that returns to the Earth. If the field of the earth extends no further than 10RE in the sunward direction, at what angle (in degrees) in the picture above does the last field line that returns to the earth on ...
April 10, 2013

physics
URGENT !! PROBLEM 2 !! D:
April 7, 2013

mechanics
The figure below shows a ball with mass m = 0.299 kg attached to the end of a thin rod with length L = 0.388 m and negligible mass. The other end of the rod is pivoted so that the ball can move in a vertical circle. The rod is held horizontally as shown and then given enough ...
November 2, 2012

math
A box of chalk and 2 staplers cost $10. Three boxes of chalk and 2 staplers cost $18.Find the cost of 1 box of chalk and 1 stapler.
September 27, 2012

math
5:9
March 20, 2012

math
there are 20 cars and 36 trucks in a parking lot what ratio accurately compares the number of trucks to cars
March 20, 2012

math
if the ratio of free throws made to free throws attempted is 5 to 6 what would be the possible number of free throws made and free throws attempted
March 20, 2012

math
how would you write the ratio of 4 white shirts to 6 red shirts
March 20, 2012

physics
A sound wave, traveling at 337m/s, is emitted by the foghorn of a tugboat. An echo is heard 1.4 s later. How far away is the reflecting object?
January 16, 2012

Geometry
4x-2(3x-7)+ 2=0
August 25, 2011

Geometry
x-1 7 . ---=- . 4 8 ignore the dots
August 25, 2011

statistics
in a distribution of scores with a mean of 1500 and a standard deviation of 250, what is the 95th percentile?
February 26, 2011

statistics
a distribution has a mean of 5 and a standard deviation of 2, what is the z score of 8 ?
February 26, 2011

Stats
225.209 :]
February 26, 2011

Stats
In a distribution of scores with a mean of 234 and a standard deviation of 47, what is in the 43rd percentile ? and what formula do i use ?
February 26, 2011

Stats
In a distribution of scores with a mean of 234 and a standard deviation of 47, what is in the 43rd percentile ? and what formula do i use ?
February 26, 2011

geometry
how do i solve this. the measure of each side of an equilateral triangle RST with RS = 2x +2, ST =3x and TR
December 14, 2010

Math 7th grade
40/n = 28/22 what is n?
December 13, 2010

math
-3(x=8)
October 11, 2010

clothing and textile
name two elements of desing apart from line
May 4, 2010

Business/ Math/ Investment
1a- the future value of the CD at the end of the investment will be $ 4121.51. 1b- the interest earned for that period will be $ 121.51. 1c- the effective rate of the investment will be 6.17%. 2a- the future value at the end of the 6 months will be $4060.45. 2b- the interest ...
April 24, 2010

math
solve tang3x+1=sec3x
March 16, 2010

math
please do, it would be very helpful
May 20, 2009

math
write an equation in slope intercept form to represent the table of values. x=2 3 5 6 y=-3 -4 -6 -7 please help me solve it, i find it complicating
May 20, 2009

4th grade
Write the missing number in each fraction so that the fraction belongs in the box. Write one more fraction that can go in the box. 1. 2/3 /9 12/ 20/ /12
February 26, 2009

Science
Nitrogen, carbon, water and hydrogen make up more than what percentage of the mass of the human body?
September 8, 2008

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