# Posts by Leasha

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 ...

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 ...

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?

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

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 ...

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 ...

math
Thanks so much!

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

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.

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

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 ...

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 ...

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 ...

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 ...

English
how are technological tools important

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