Tuesday
December 6, 2016

# Posts by leticia

Total # Posts: 25

Maths
Solve the following system of linear equations by addition. Indicate whether the given system of linear equations is consistent, inconsistent, or dependent. If the system is consistent, find the solution. {−7x + 7y −9x + 9y == −21 −27
July 12, 2016

math
the length of a rectangle is 23 centimeters less than five times its width. Its area is 42 square centimeters. Find the dimensions of the rectangle
April 19, 2016

Statistics
It is pretty common across most schools to find the grades at the MBA level divided between A's and B's. As such, you expect the mean GPA to be around 3.50. Using the sample of 200 MBA students, conduct a one-sample hypothesis test to determine if the mean GPA is ...
March 31, 2015

chemistry
In a reaction involving the iodination of acetone, the following volumes were used to make up the reaction mixture: 10 mL 5.0 M acetone + 10 mL 1.5 M HCl + 10 mL 0.005 M I2 + 20 mL H2O A student found that it took 400 seconds for the color of the I2 to disappear. a) How many ...
March 5, 2015

social studies
Name two obstacles and one political obstacle that stood in the way of the construction of the panama canal. how did engineers and politicians overcome these obstacles?
June 10, 2014

calculus
Find the area of the indicated region. We suggest you graph the curves to check whether one is above the other or whether they cross, and that you use technology to check your answer. Between y = x2 − 4x + 1 and y = −x2 + 4x − 5 for x in [0, 3]
December 15, 2013

physics
A block of mass m1 = 2.4 kg initially moving to the right with a speed of 3.3 m/s on a frictionless, horizontal track collides with a spring attached to a second block of mass m2 = 4.1 kg initially moving to the left with a speed of 1.5 m/s as shown in figure (a). The spring ...
October 14, 2013

Physics
A block of mass m1 = 2.4 kg initially moving to the right with a speed of 3.3 m/s on a frictionless, horizontal track collides with a spring attached to a second block of mass m2 = 4.1 kg initially moving to the left with a speed of 1.5 m/s as shown in figure (a). The spring ...
October 14, 2013

Physics
A block of mass m1 = 2.4 kg initially moving to the right with a speed of 3.3 m/s on a frictionless, horizontal track collides with a spring attached to a second block of mass m2 = 4.1 kg initially moving to the left with a speed of 1.5 m/s as shown in figure (a). The spring ...
October 14, 2013

Physics
A small block of mass m = 194 g is released from rest at point A , along the horizontal diameter on the inside of a hemispherical bowl of radius R = 29.5 cm, and the surface of the bowl is rough. The block's speed at point B is 1.56 m/s.
October 2, 2013

Statistics - Help!
A recent article in Myrtle Beach Sun times reported that the mean labor cost to repair a color television is \$90 with a standard deviation of\$22. Monte's TV sales and service completed repairs on two set this morning. The labor cost for the first was \$100 for the second. ...
July 7, 2013

Math
John walks 20km due east then turns 270 degrees anticlockwise and walks another 20km. What would be his bearing from the starting point?
February 13, 2013

Math
bill and laura borrowed \$15 000 at 6 per annum compounded monthly for 30 years to purchase a home. Their monthly payment is determined to be \$899.63. Find a recursive formula for their balance after each monthly payment has been made. Determine Bill and Laura's balance ...
December 10, 2012

geometry
if lines m and n are parallel and the measure of angle 3 is 45 what is the measure of 8
August 22, 2011

Statistics
Verifying Requrements and finding the margin of error Credit rating FICO credit rating scores of a smiple random sample of applicants for credit cards 95% confidence =50,x=677 and is knownd to be 68
August 2, 2011

statistics
A random sample of n=36 scores is selected from a population. Will this have a definite normal distribution?
March 17, 2011

math
PLEASE I NEED HELPPPPP.. i have many exercises like that, just want to know where to start thanks. f(x)= x^3+2x^2-x-2 / x^2+x-6 find: 1. domain 2. symmetry or not 3. determine if f(x)is: a)in lowest trem b)proper/improper 4. x-intercepts, y-intercepts 5. zeros of f(x) and ...
March 1, 2011

mth
PLEASE I NEED HELPPPPP.. i have many exercises like that, just want to know where to start thanks. f(x)= x^3+2x^2-x-2 / x^2+x-6 find: 1. domain 2. symmetry or not 3. determine if f(x)is: a)in lowest trem b)proper/improper 4. x-intercepts, y-intercepts 5. zeros of f(x) and ...
March 1, 2011

math
Yes, once the first disk is replaced, the event B (the selection of the second disk) does not depend on the first one.
February 26, 2011

algebra
use substitution method to find x and y for 7x + 5y = -31 and -4x + y = 37
October 25, 2010

algebra
it takes 1 cup of liquid fertilizer to make 7 1/2 gallons of spray. how much liquid fertilizer is needed to make 80 gallons of spray?
October 19, 2010

AP Physics B
mmm i need these as well and i cant find them mmm any help out there did u find them
November 17, 2009

Math
(-6) 24
April 18, 2008

Math
The sum of two two numbers is(3). Three times the first number minus the second number equals 27. What are the two numbers
April 18, 2008

unscrambling word
eennicctmve
June 14, 2005

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