Friday

August 28, 2015
Total # Posts: 15

**Calculus**

Find the extreme value(s) of the function f(x)=1/(1-x^2). I tried, and for the first derivative I got -1/(2*sqrt((1-x^2)^3)). I then found critical values of the function to be -1 and 1. However, the textbook says that the minimum value is 1 at f(0), and I have absolutely no ...
*January 1, 2013*

**chemistry**

Ionic bonds tend to have an electronegativity difference ranging from 1.7-4.0. Looking on the periodic table, we can determine the ionic bonds. H--S 2.2--2.58 (difference of 3.8) Si--Cl 1.9--3.16 (difference of 1.26) Cs--Br 0.79--2.96 (difference of 2.17) Therefore, it would ...
*April 6, 2012*

**Biology**

If agglutination occurs when blood with a certain antigen and blood with the corresponding antibody mix, why is blood type O the universal donor? Wouldn't the A or B antibodies from the O type blood attack the blood antigens of the recipient and cause clotting?
*April 6, 2012*

**chemistry**

PV=nRT *n = #mol* n=PV/RT (1atm*1L)/(0.0821(L*atm/K*mol)*293K)=n 0.42=n 1mol O2= 32g O2 (according to the periodic table) 0.42mol*32g = 13.44g O2
*April 6, 2012*

**Physics**

A model rocket is launched vertically upward from the ground. After 4.3s, its fuel is completely burned. Assume uniform acceleration of 3.0 m/s2 while the fuel is burning. What is the velocity of the rocket at the instant that the fuel is completely burned? What's the ...
*January 4, 2012*

**french**

Passé composé is the English equivalent of "I have", but it's used more frequently in French. To make a sentence into passé composé, one must add the correct conjugation of the verb "avoir", and then the past participle of ...
*September 18, 2011*

**math**

Thanks so much!
*June 20, 2011*

**math**

An equilateral triangle is inscribed in a circle. The radius of the circle is 21 in. Determine the side length of the triangle to the nearest 10th of an inch
*June 20, 2011*

**Physics**

A ball is thrown straight up into the air with a velocity of +20.5 m/s. Find the velocity of the ball after 2.5 s.
*June 19, 2011*

**FRENCH**

To add to that, make sure you know that most -er verbs in the passé composé end with é
*June 7, 2011*

**Geometry**

Consider the following diagram and fill in the table: It's a diagram of circles with points around the circumference based off of the table. The table reads # of Points: 2, 3, 4, 5, 6 # of Regions: 2, 4, 8, ?, ? For the 5 points I got 16 regions when i use inductive ...
*September 13, 2010*

**GEOMETRY HELP!**

Consider the following diagram and fill in the table: It's a diagram of circles with points around the circumference based off of the table. The table reads # of Points: 2, 3, 4, 5, 6 # of Regions: 2, 4, 8, ?, ? For the 5 points I got 16 regions when i use inductive ...
*September 13, 2010*

**Geometry**

Consider the following diagram and fill in the table: It's a diagram of circles with points around the circumference based off of the table. The table reads # of Points: 2, 3, 4, 5, 6 # of Regions: 2, 4, 8, ?, ? For the 5 points I got 16 regions when i use inductive ...
*September 13, 2010*

**Geometry**

Consider the following diagram and fill in the table: It's a diagram of circles with points around the circumference based off of the table. The table reads # of Points: 2, 3, 4, 5, 6 # of Regions: 2, 4, 8, ?, ? For the 5 points I got 16 regions when i use inductive ...
*September 13, 2010*

**English**

how are technological tools important
*June 18, 2008*

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