Saturday
July 26, 2014

Posts by ANON


Total # Posts: 1,339

Chemistry
what are the half reactions for a) Cr(NO3)2 b) Pb(NO3)2 I know that Cr and Pb are: Cr^2+ +2e- -> Cr Pb^2+ +2e- -> Pb I just don't know how to do the half reaction for (NO3)2

math
93.75% are yellow

Business HELP!!!
This is a 100 question hw sheet and I have answered all but i am unsure about a few please help!!! 8. Which of the following statements about when the Fed increases the reserve requirement is correct? A. Interest rates go down. B. Banks have more money to lend. C. Inflation te...

geometry
712ft2(Squared)

Business
This is a 100 question hw sheet and I have answered all but i am unsure about a few please help!!! 8. Which of the following statements about when the Fed increases the reserve requirement is correct? A. Interest rates go down. B. Banks have more money to lend. C. Inflation te...

Business Accounting
This is a 100 question hw sheet and I have answered all but i am unsure about a few please help!!! 8. Which of the following statements about when the Fed increases the reserve requirement is correct? A. Interest rates go down. B. Banks have more money to lend. C. Inflation te...

Business
The contrarian approach to investing is best illustrated by A. staying out of the market no matter what experts are saying. B. always buying when others are selling. C. investing in mutual funds, contradicting the idea that investing in individual stocks is better. D. investin...

Business Accounting
Which of the following statements about the money invested in a traditional IRA account is correct? A. It isn’t taxed until it’s withdrawn. B. It’s subject to double taxation. C. It’s taxed as you make deposits. D. It isn’t taxed.

Literature
Who did Hans Christian Andersen dedicated The Little Mermaid to?

math
this question is vague, which system are you using? The numbers do vary. Also do want to convert a ton to Kg?

Math
because the [ (79degrees/360 degrees) x pi x 6^2 ] would be the measure of that section of the circle. the area of the whole circle would be pi x r^2 but since you're only solving for that section it would be 79/360 times that whole area of the circle to solve for that sec...

Math
were you allowed to use a graphing calculator? because if you were, you would be able to find the HA by looking at the graph

geometry
Find the areas of both the wall and the door and subtract the two 8 x 20 = 160 to find the width of the wall: 4+ 8+ 8= 20 Area of the wall: 25 x 20 = 500 Area to be painted: 500-160 = 340 ft^2

MATH
(7/8)-(3/4)= x ----equation (3/4) = (6/8) (7/8)- (6/8) = (1/8)

Chemistry
thank you!

Chemistry
Consider an amphoteric hydroxide, M(OH)2(s), where M is a generic metal. M(OH)2 (s) <--> M^2+ (aq) + 2OH- (aq) Ksp=4e-16 M(OH)2 (s) + 2OH- (aq) <--> M(OH)4 ^2- (aq) Kf=0.06 Estimate the solubility of M(OH)2 in a solution buffered at pH= 7.0, 10.0, and 14.0 I'm ...

Chemistry help!!!
The class will react 50.00 mL samples of .200 mol/L potassium phosphate with an excess of 0.120 mol/L lead II nitrate solution. what is the minimum volume of lead II nitrate solution required? What volume of lead II nitrate solution should the instructor tell the students to u...

chemistry
Calculate the pH of the resulting solution if 30.0 mL of 0.300 M HCl(aq) is added to (a) 35.0 mL of 0.300 M NaOH(aq). (b) 40.0 mL of 0.350 M NaOH(aq).

Chemistry
Which of the following solution should be mixed with 50.0 mL of 0.050 M HF solution to make an effective buffer? A) 50.0 mL of 0.10 M NaOH B) 25.0 mL of 0.10 M NaOH C) 50.0 mL of 0.050 M NaOH D) 25.0 mL of 0.050 M NaOH

calculus
if the solutions of f(x)=0 are -1 and 2, then the solutions of f(x/2) = 0 are

algebra
set denominator equal to 0 and solve for x which would make the equation undefined v^2-4v-32=0 (v-8)(v+4)=0 v=8, v=-4 x is not equal to 8 or -4

Intermediate Algebra
=sqrt(24)x i = 2sqrt(6)i

PreAlgebra
$20

Intermediate Algebra
[(7a-b)(7a+b)]/(7a-b) =7a+b

math
break them down into shapes that you know how to work with like squares and rectangles.

Science
It should be 0.25. I don't really know how to get that from the equation (Amplitude=distance/frequency), but since the problem said that "the crests of the waves are about .5 meters above the troughs." I divided that by two.

Genetics
A certain form of albinism in humans is recessive and autosomal. Assume that 1% of the individuals in a given population are albino. Assuming that the population is in Hardy-Weinberg equilibrium, what percentage of the individuals in this population is expected to be heterozyg...

Genetics
The difference between fitness of a given genotype and another genotype considered optimal is called the selection coefficient (s). What is the selection coefficient for a genotype (aa) that produces an average of 99 offspring when Aa individuals produce an average of 100 offs...

Chemistry
But how did you get the (Cl^-)?

Genetics
A certain form of albinism in humans is recessive and autosomal. Assume that 1% of the individuals in a given population are albino. Assuming that the population is in Hardy-Weinberg equilibrium, what percentage of the individuals in this population is expected to be heterozyg...

Genetics
The difference between fitness of a given genotype and another genotype considered optimal is called the selection coefficient (s). What is the selection coefficient for a genotype (aa) that produces an average of 99 offspring when Aa individuals produce an average of 100 offs...

Geometry
The area of a square garden is 242m squared. How long is the diagonal?

reed
can you give me a filipino global leaderin the medical field who exemplified his or her faith by creating a difference through an act of social transformation of persons in the family ,in the community and in the global world.?

reed
group of filipinos in the medical field who exemplified his or her faith by creating a difference through an act of social transformation of persons in the family ,in the community and in the global world.

pharcalc
Can you give me one problem about pediatric dosing with many questions.

calc2
Let R denote the region in the plane consisting of all points (x,y) where x ≥ 1 and 0 ≤ y ≤ 2/x. Let S denote the solid formed by rotating R about the x-axis. Observe that S is an unbounded region; that is, it extends indefinitely in the direction of the posi...

Calculus
The graph of the curve y2=10 x+10 is a parabola, symmetric with respect to the x-axis. Find the area of the surface generated by rotating about the x-axis the part of this curve corresponding to 0 ≤ x ≤ 20.

Math
Because diameter is twice the radius, the radius must be 1/2 of 8 ft. So r=4ft. The circumference is equal to 2*pi*radius. Since pi is =3.14 Thus by comparing the two equations D=2r C=2rpi the only difference is pi so the answer would be F if you assume 3.14 is approximately 3

Science
Roots have a tendency to grow downwards, while shoots grow upwards. Gravitropism is a turning or growth movement by a plant or fungus in response to gravity. Charles Darwin was one of the first to scientifically document that roots show positive gravitropism and stems show neg...

ymous
You're standing 14 feet from the edge of a cylindrical water tank and is 26 feet from the point of tangency. the tank is 10 feet tall. what is the volume in cubic feet

business
•400, who posted on Sunday, April 15, 2012 at 1:51pm was correct!

Physics 12
A block mass m1 lying on a frictionless inclined plane is connected to a mass m2 by a massless cord passing over a pulley. 1.) determine a formula for the acceleration of the system in terms of m1, m2, Ө, and g. 2.)what conditions apply to mass m1 and m2 for the accelera...

Math
how do you factor: 3x^2 + 11x - 4

life orientation
Could you be more specific with the question? What are you referring to?

any tutor
Are there any tutors on right now or people who are good with chemisty?

CHEMISTRY
Give names of the following covalent (nonmetallic) compounds: S4N2 ClF3 I2O5 SeF6 PBr5 H2O C2I6 C5F9H2Cl Si2F6 Si9F10Br7H

social studies
Pharaohs from Kush ruled Egypt for almost a century. The rulers from the south encouraged an Egyptian-style culture. They built temples to honor Nubian and Egyptian gods. They dotted the desert with hundreds of tombs. Like earlier pharaohs, they encouraged trade between Africa...

7th grade science
You're welcome. (:

math
determine the linear velocity of a point rotating at 15 revolutions per minute at a distance of 3.04 meters from the center of a rotating object

physics
The racing car has a mass of 1250kg. When the brake pedal is pushed down a constant braking force of 10,000 N is exerted on the car. Calculate the acceleration of the car. If you could also tell me how you came to the answer, it would help me in the future. Thank you.

Genetics
In general, what two methods are used to grow bacteria in the laboratory?

Genetics
Name the term used to describe the phenomenon in which a bacteriophage genome incorporates its genome into the chromosome of the host.

physics
application of and the concept of heat and temperature in technology.please can u give me the link.thanks

Russian History xD
Thank you! :D

Russian History xD
I'm doing a project on Russian art, and I'm kinda confused. These are some things I got down. They're just jumbled thoughts. But did communism ending cause the renaissance? Since Russia was a communist country, art used to be used to make the government look good. ...

Russian History
Did Peter the Great end communism?

Physics
A speeder traveling at a constant speed of 102 km/h races past a billboard. A patrol car pursues from rest with constant acceleration of (9 km/h)/s until it reaches its maximum speed of 146 km/h, which it maintains until it catches up with the speeder. How long does it take th...

Physics
A copper (Cu) weight is placed on top of a 0.24 kg block of wood (density = 0.60*10^3 kg/m3) floating in water. What is the mass of the copper if the top of the wood block is exactly at the water's surface?

Precalculus
The figure below shows a conchoid of Nicomedes. The top part is formed by a ray from the origin that rotates through an angle t° with the x-axis. The ray intersects the fixed line y = 2 at point A. From A you measure out 7 more units to point P on the graph of the conchoid...

Precalculus
Thank you so much!

Precalculus
Given r = 10 cos θ If you sketched an angle of θ = 150 degrees, what quadrant would it be located in? It's either the first or second... I think second? Multiply both sides of r = 10 cos θ by r. Transform the resulting equation into Cartesian coordinates.

Precalculus
Ohmygoodness. Hhaha. Thanks!

Precalculus
This is probably silly, but where is the 2 in the beginning of all of those from?

Precalculus
Write the three cube roots of 8 cis (-30°).

Precalculus
So the answer for "Give the equation of the line in rectangular coordinates." is sqrt(x^2+y^2) = 4 [sqrt(x^2+y^2) ]/y? Or is it the y=4? Again, that's probably a silly question..

Precalculus
The polar equation of a graph is given below: r=4/sin(theta) Give the equation of the line in rectangular coordinates. If you rotate this graph 40 degrees counterclockwise about the pole, would you add or subtract 40 degrees to θ? Subtract?

Precalc
*(x + 5)(x^2 - 6x + 13)

Precalc
Given g(x) = (x + 5)(x2 - 6x + 13), find the one real zero of g(x): I think it's -5 Find the two complex zeros of g(x):

Precalculus
The figure shows part of a curve traced by a point on the circumference of a circle of radius 4 that rotates, without slipping, around a fixed circle of radius 2. The rotating circle starts with angle t = 0 radians and the point P (x, y) at (10, 0). In this problem you will fi...

Precalculus
This figure shows concentric circles of radii 3 and 5, respectively, centered at the origin of an xy-coordinate system. A ray from the center at an angle of t degrees to the x-axis cuts the two circles at points A and B. From A, a vertical line is drawn; and from B, a horizont...

Precalculus
QUESTION 1 Joe intercepts a pass 8 yards into the end zone, 19 yards from the right side of the field as he faces the opposite end of the field (see figure). He starts running diagonally, moving at a rate of 4 yd/s down the field and 2 yd/s across the field. Let x and y be his...

Precalculus
I don't even how to go about this.... Mars is in an elliptical orbit with the Sun at one focus, as shown in the figure. At its aphelion, Mars is 156 million miles from the Sun. At its perihelion, Mars in only 128 million miles from the Sun. How long is the major axis of th...

Precalculus
A geometric series has t1 = 100 and t2 = 90. Find the number to which Sn converges as n gets very large.

Precalculus
Thanks!

Precalculus
A geometric series has t1 = 3 and r = 2. If tn = 96. What does n equal in this problem? What is the special name given to the terms between 3 and 96 in this problem?

Precalc
(10 cis 200) (2 cis 50) = ? Is it just 20cis(10000)?

math problem
No. 6(-4)-5(7)=-35, not -2.

Language
The other is bad hair (hare) day. Too funny.

Language
The main (mane) part. Clever.

Language
Toed (Toad) is the first.

science
Arranging species into classes.

counciling
Maybe about what you learned from one of the sadder times in your life?

counciling
Neither, just honest.

physics
While John is traveling along an interstate highway, he notices a 166 mi marker as he passes through town. Later John passes a 120 mi marker. What is John’s current position?

physics
A jet travels at 434 m/s. How long does it take to travel 294 m? Answer in units of s

physics
While John is traveling along an interstate highway, he notices a 166 mi marker as he passes through town. Later John passes a 120 mi marker. What is the distance between town and John’s current location? Answer in units of mi

physics
A sound wave, traveling at 348m/s, is emitted by the foghorn of a tugboat. An echo is heard 1.99 s later. How far away is the reflecting object? Answer in units of m

Physics
Please show steps and thank you! An astronaut of mass 70 kg carries an empty oxygen tank of mass 14 kg. He throws the tank away from himself with a speed of 3 m/s. With what velocity does the astronaut start to move through space?

Physics
PLEASE HELP! and include steps of how you solved it! What magnitude of force, acting for 0.025 s, will change the velocity of a 100 g ball from 30 m/s eastward to 40 m/s westward?

Chemistry
How many Calories of energy does it take to heat 257 mL of water by 62.2 C?

Math
(2^n) - 1

Precalculus
Is this correct? 1. Find the solution set for x^2/(x+3) < 9/(x+3). x^2/(x+3) < 9/(x+3) x^2 < 9 x^2 - 9 < 0 (x-3)(x+3)<0

socials
You've neglected to mention economy. Although it is horrid and quite unfortunate, it is a way to regulate population. As prices go up, an increasing number of individuals fail to meet the costs of standards to living. These people can sometimes die from hunger, refrain fro...

Physics
What magnitude of force, acting for 0.025 s, will change the velocity of a 100 g ball from 30 m/s eastward to 40 m/s westward?

PHYSICS 11th
A girl holds a 1.7 kg air rifle loosely and fires a bullet of mass 2 g. The muzzle velocity of the bullet is 160 m/s. What is the magnitude of the recoil velocity of the gun?

PHYSICS
A 62 kg water skier, moving at 14 m/s , lets go of the towline. Momentum= 868 kgm/s Impulse= -868 Ns c.If the water exerts an average force of -275 N on the skier, how long must the force act? 3.16 s d. How far does she travel during this time? I'm guessing "this time...

precalulus
Ok feeling kinda dumb because this isn't coming out right. I know it's simple. log6 (x -3) + log6(x -6) - log6(x + 1) = 2

algebra
given f(x) and g(x) find a. f + g b. f -g c. f*g d. f/g f(x) = sqrt x g(x) = 6x - 5

pre calculus
given the following rational function a. state the domain b. find the vertical and horizontal asymptotes if any c. find the oblique asymptote f(x) = x^2 + 7x + 5 / x + 8

pre calculus
verify functions f and g are inverses of each other by showing that f(g(x)) = x and g(f(x)) = x. f(x)= 5/(2 -x) g (x) = 2 - 5/x

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