Thursday
July 31, 2014

Posts by bob


Total # Posts: 2,412

math
Help! These are fractions, so bear with me: -5/8 x= -9/10 Solve with the multiplicaation principle. How do I do this? The fractions throw me off every time!!!

math substitution method
I know this! Put it in for x. So 7(28-6y) +5y=-26 use that to get y, then plug your answer for y into one of the equations to get x

math
Help! These are fractions, so bear with me: -5/8 x= -9/10 Solve with the multiplicaation principle. How do I do this? The fractions throw me off every time!!!

algebra/common math
how do I solve this? I know it's common math, but I cannot remember how! -4x> 1/11 I think I multiply both sides by 11, but..... I can't remember how!

algebra
I need help! Solve by hte elimination method: 7r-9s=-12 9r+7s=96 When I do this, I get a crazy fraction, and I know the answer is a point. (r,s) But what I'm getting is ridiculous. I got -564/130=s! That has to be totally wrong!

3rd grade
Unscramble cioponam

6th grade - English
what is the antonym for ndrvr

MATH - Can someone please help!
What is the solution of the interval notion? x less than 6 and x greater than -3

algebra
How do I solve this with the elimination method? 5x-10y=4 5x-10y=5 I need x=, and y= to get an ordered pair, but every time I mult. by a neg, everything goes away instead of just one variable! please help!

chemistry
At 300.K and 1.00 atm, assume that 25 mL of NO gas reacts with 22 mL of oxygen gas and excess water to produce nitric acid according to the following equation: O (g) H O(l) 2 HNO (g) 2 2NO(g) 3 + 2 + 2 ⎯⎯→ 3 . If all of the nitric acid produced by this reacti...

Math
What is the solution of the interval notion? x less than 6 and x greater than -3

algebra
how do I break this down? 4x-7 <-4 over 6 the 4x-7 is all over 6 (like a fraction) I thought I just multiply by 6 to get rid of the fraction?

algebra
YOU ARE RETART JEWBU

6th grade math
answear is x>54(11)+ 20 what is x,=81

chemistry
What are the probably products of... a) an aqueous solution of two ionic compounds b) a single compound c) two elements d) oxygen and a compound of carbon and hydrogen ?

Environmental Science
very helpful :)

math
How do I solve the equations using the elimination method: .3x-.2y=4 and .4x +.3y= 49/23 Normally I would multiply the decimals by 10 to make them whole numbers, but that fraction is really throwing me off. What do I multiply to eliminate that fraction? Please help!

Auditing
1. Which of the following matters would an auditor most likely consider to be a significant deficiency to be communicated to the audit committee? A. Management's failure to renegotiate unfavorable long-term purchase commitments. B. Recurring operating losses that may indic...

Business
Looks right to me

algebra 1
Itwantedtobethenightmare

Calculus
Where did you get the (L-5) and the (W-4)?

math
When a lady faints, what number do you need to bring her?

Chem
A gas at a pressure of 1 atm, a volume of 1 , and a temperature of 25 C. What would happen to the pressure if the volume were reduced to 0.5 and the temperature increased to 250 C ?

math
4N

math
4N

chemistry
Diacetyl, a substance contributing to the characteristic flavor and aroma of butter, consists of 55.8% C, 7.03% H, and 37.17% O. In the gaseous state at 100 degrees celsius and 747 torr, a 0.30 gram sample occupies a volume of 111 ml. What is the molecular formula of diacetyl?

Chemistry
A mixture of gasses at a total pressure of 95 kPa contains N2, CO2, and O2. The partial pressure of the CO2, is 24 kPa and the partial pressure of the N2 is 48 kPa. What is the partial pressure of the O2?

Chemistry
A gas storage tank has a volume of 350,000 when the temperature is 27 degrees celcius and the pressure is 101 kPa. what is the new volume of the tank if the temperature drops -10 degrees celcius and the pressure drops to 95 kPa? please show work.

Physics
u r wight and ask ur teacher if u are confused it is the best way...

Science
You are 100% correct...I think...

Chemistry
A gas occupies a volume of 140 mL at 35 degrees celsius and 97 kPa. What is the volume of the gas at STP?

Chemistry
A 10 gram of mass of krypton occupies 15.0 L at a pressure of 210 kPa. What is the volume of the krypton when the pressure is increased to 790 kPa?

College physIcs
"You don't seem to be willing to take step one in answering these problems yourself. " What good is just knowing a formula?

ethics 125
· Consider the following statements: (a) Asian Americans and Pacific Islanders are a model minority, and (b) Asian Americans and Pacific Islanders belong to a single “Asian American” culture. If someone said one of these statements to you, how would you explai...

4th grade math
I think Erik meant to say that Judy had 15, not 12. Then, it solves that 27+ (27-12)=42, right? My SIL just called asking us this same question...must be at the same place in the book!

Chemistry
4.76 kg

spanish
Choose the correct command form. No __________ uds.esos zapatos sucios en la casa! (llevar) A. llevan B. lleven C. lleve D. lleva

chemistry
If 2500 ml container is filled with 175 grams of argon at -48 degrees celsius, what is the pressure?

chemistry 2
Then your answer is B

chemistry 2
im confused i cant set this problem up correctly? I need a lot of help

chemistry 2
(2.0/0.5)=4

chemistry 2
(2.0/0.5)=4

chemistry 2
(2.0/0.5)=4

chemistry 2
A gas diffuses only 0.5 times as fast as an oxygen molecule at the same temperature. What is the molecular weight of the gas?

Chemistry
How do you convert from mass percentage to molality? I get 0.084 m but that is incorrect.

chemistry
how many grams of propane are in a 35L container at 40 degrees and 900 torr?

chemistry
how many grams of propane are in a 35L container at 40 degrees and 900 torr?

Math
12

Physics
a^2 + b^2 = c^2

trig
2sin(3x-3.14)-1 find the inverse form of this equation

Algebra
Can I simplify this further SQRT( 2 - SQRT(2) )

math
need help with this problem 9-10x2 divided by 5+7

algebra
what percent of 180 is 27?

science
two common ways in which a glacier can cause ersion?

math
The percentage of working mothers y can be modeled by the equation y=0.0102x + 0.644 where x is the number of years since 1990. In what year will 90% of mothers be in the labor force?

3rd grade
when i am rounded to the nearest ten, i am 30. The sum of my two digits is 5. What number am I?

calculus
I tried the integral from 1 to e of 1-lnx^2 but that doesn't work.

calculus
Find the volume if the area between the curve y=lnx, x=1, and y=1 is rotated about the x-axis.

fifth frade fractions
Two numbers have a product of 3 1/5 and a sum of 3 3/5. one of the numbers is a whole number. What are the numbers?

algebra
a)using intercepts, graph the three lines 4x + y - 8=0, 2x - y - 4=0, x + 2y - 16 = 0

math
Extremely large numbers, number of sand particles on the world, distance to the nearest star in KM's etc.

Chemistry
A 71.0 L cylinder containing CH2O at a pressure of 0.550 atm is connected by a valve to 1.50 L cylinder containing N2 at 266.0 torr pressure. Calculate the partial pressure (atm) of N2 when the valve is opened.

AED 204
i just want to know what to do? do u awnser it personally? Appendix D Educational Implications of Socioeconomic Status Matrix Directions: Based on your personal experiences and on the readings for this course, answer the questions in the green section of the matrix as they app...

AED 204
Who is most likely to be a part of this socioeconomic class? How do teacher expectations positively or negatively impact this socioeconomic class? How does tracking positively or negatively impact this socioeconomic class? How is financial support for schools serving this clas...

biology
This qualitative study aimed at exploring whether students' successful use of analogy in learning curriculum complex science concepts was related: (a) to the level of their understanding of a specific analogy and (b) to their metacognitive awareness of how the analogy was ...

spanish
what does this mean__________ Que tienes en tu mochila?

spanish
what are you wearing

Physics
A mass m is hanging on a string that passes over a pulley and is then attached to another mass 3m that is resting on a horizontal table (along with the pulley). Neglect friction. Mass m is held montionless and is then released. When it has fallen a distance h, it will have a s...

Math
h t t p : / / w w w . j i s k h a . c o m / d i s p l a y . c g i ? i d = 1 2 6 3 1 6 6 6 2 2 you can post your response here please

chemistry
when there is 3.0 x 10^20 molecules in a closed container, the pressure is 1.2 atm. Using a pumper 1.5 x 10^20 more molecules are added to the container. what is the new pressure?

Math
like post here so that way i do not have to search for the old question

Math
h t t p : / / w w w . j i s k h a . c o m / d i s p l a y . c g i ? i d = 1 2 6 3 1 5 7 1 0 1 can you post response in this question thanks

Algebra
Can this be simplified or factored into a more simpler form??? (X^2 + X)/(X^2 + 3X) Thank You

geo
blank

Plant Project
Is the Spotted Chinese Evergreen plant a monocot or dicot? This project is due Friday. I've researched on it and have found nothing but how to take care of it. Please help if you have any information!

english
how do you translate my winter break in french?

calculus
write a power series for e to the 2x and find the interval of convergence

english
Which word do you use in the following sentence? and why? (every day or everyday) Karen waited for the school play.

Physics
3) Joe has a playing time of 74 minutes. When the music starts, the CD rotating at an angular speed of 480 revolutions per minute (rpm). At the end of the music, the CD is rotating at 210 rpm. Find the magnitude of the average angular acceleration of the CD (in rad/s^2)

trig
this is in 3 grade?

Calculus
I got the same answer for the first derivative but I am still messing something up for the second derivative. It is probably taking out the common factor. I'll check back later, got to go.

Calculus
Find y' and y'' y=X^3/(X^2-1)

Unit rates
Explain how you can use a unit rate to compare what store is a better buy.

social studies
hi

Math
Find the line for the above data. X:5,5,7,8,9,11,12,12,14 Y:3,8,5,7,11,10,15,19,20

software
what are some different elements in a internal proposal

6th grade Math
the two numbers are 1.5 and 2.4 a+b=3.9 a-b=0.9 a=0.9-b subbing in the second formula into the first 0.9+b+b=3.9 2b=3.0 b=1.5 a+1.5=3.9 a=2.4

MATH
24 eggs * 3/4 = 24 *3 = 72 72/4 = 18 eggs broke 18/24 = 3/4

Chemistry
The Ph of the new acid/base is now "poo"

physics
please answer this one if you know it, im soooo bad at physics

physics
A rocket is fired upwards with 200.0 J of kinetic energy. How high does the rocket get at its highest point? Use the conservation formula.

physics
A batter hits a fly ball which leaves the bat 0.90 m above the ground at an angle of 61° with an initial speed of 29 m/s heading toward centerfield. Ignore air resistance. (a) How far from home plate would the ball land if not caught? (b) The ball is caught by the centerfi...

physics
A swimmer is capable of swimming 0.45 m/s in still water. (a) If she aims her body directly across a 75 m-wide river whose current is 0.30 m/s, how far downstream (from a point opposite her starting point) will she land? (b) How long will it take her to reach the other side? H...

Advance Biology
What is attacted by herpes?

Advance Biology
I also think the number 9 is RNA.

Advance Biology
I think number 10 is covalent bonds and number 11 is hydrogen bonds.

Advance Biology
I have to find the correct term that best fits each definition. 1)The "transforming factor" that alters pneumonia bacteria 2)The three parts of every nucleotide 3)A pair of these forms a "rung" in the DNA ladder 4)Used to "label" DNA and protein i...

Statistics
A car manufacturer is interested in conducting a study to estimate the mean stopping distance for a new type of brakes when used in a car that is traveling at 60 miles per hour. These new brakes will be installed on cars of the same model and the stopping distance will be obse...

chemistry
Nevermind, I figured it out. :)

chemistry
Calculate deltaG from deltaH and deltaS. Use the table of standard thermodynamic data. calculate deltaG at 0 degrees C for CH3CH2CH3 + 5O2 --> 3CO2 + H2O. CH3CH2CH3 + 5O2 --> 3CO2 + 4H2O I've balanced the equation so far, I know that deltaG = delatH - T(deltaS) but m...

Pages: <<Prev | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | Next>>

Search
Members