Saturday
May 25, 2013

Posts by Katia


Total # Posts: 19

Algebra
Triangle ABC has coordinates A(1, 4); B(3, –2); and C(4, 2). Find the coordinates of the image A'B'C' after a reflection over the x-axis

S.S
What Events Led The Washington Crossing The Delaware

statistics
I visited a beautiful flower garden yesterday and counted exactly 90 flowers. Each flower was either red or yellow, and the flowers were not all the same color. My friend made the following observation: No matter which two flowers you might have picked, at least one was bound ...

statistics
A group of 50 teachers and school administrators attended a convention. If any two persons are picked at random, at least one of the two would be a teacher. From this information, what percentage of the people at the convention were teachers? Could someone help me start this, ...

College Algebra
x + y = 2 x - y = 26 Add the two equations: 2x = 28 x = 14 Subtract the second original equation from the first one: 2y = -24 y = -12 Sum: 14 - 12 = 2 Difference: 14 - (-12) = 26

Math
There are 64 possible dice throw outcomes. The throws with sum 10 are: (2,8) (3,7) (4,6) (5,5) (6,4) (7,3) (8,2) Therefore P(10) is 7 out of 64 (7/64)

Calculus
find the intervals where the function is increasing and the intervals where it is decreasing f(x)= (x^3/3)-(x^2/2) ok i found its derivative which is (f1(x)=(x-1)x my options are increasing a) (0,infinity) b) (-1,0) c(-infinity,0)U(1,infinity) decreasing a) (0,1) b) (-infinity...

Math
my problem is: From the box containing 5 red balls, 7 blue balls, 10 black balls. you select 4 balls what is the probabilty that EXACTLY 2 balls are black. i know that you start it/set it up like this: c(10,2)c(2,1) divided by c(22,4) and i can get the answer by plugging it in...

Math
i meant c(10,2)c(2,1) divided by c(22,4)

Math
i meant c(10,2)c(2,1) divided by c(22,4)

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