Thursday
July 24, 2014

Posts by Zach


Total # Posts: 303

english
In the sentence: Not only it does affect women and children, but it also affects our society and our future generations. is the sentence correct? Thank you :)

physics
how much force is exerted on a bag that is lifted at 5m/s^2 with 18.5kg in it

Math
What is 5x^2y^-3 over 25x^6y^2 in simplest form

Math
What is the annual interest rate if $1600 is invested for 6yrs. and 456 in intrest is earned

science
the lack of atmosphere.

science
the tracks of the astronauts who landed on the moon are still there in the dust and show no signs of being worn away.this is attruted to the lack of atmosphere on the moon. which of the following best accounts for the lack of atmosphere.

physics
A 4.85-kg block is placed on top of a 12.0-kg block that rests on a frictionless table. The coefficient of static friction between the two blocks is 0.645. What is the maximum horizontal force that can be applied before the 4.85-kg block begins to slip relative to the 12.0-kg ...

Physics
A.) h/4μk B.) h/16μk

Chemistry
"Suppose some sort of clamp is applied to hold an electron fixed at the distance of 2.5 Angstroms from a lithium nucleus Li3+ which is also clamped into position. Calculate the magnitude of the force between the two fixed particles." The books says the answer is: -2....

algebra 1
or 100%, depending on what your teacher is looking for

Chemistry
"Suppose some sort of clamp is applied to hold an electron fixed at the distance of 2.5 Angstroms from a lithium nucleus Li3+ which is also clamped into position. Calculate the magnitude of the force between the two fixed particles." The books says the answer is: -2....

Physics
a) Vi= 6.7sin(53) Vi = 5.35 V = Vi - gt at top 0 = Vi - g t so t at top = Vi/g t = .55 y at top = 1 + Vi t - 4.9 t^2 = 1 + 5.35(0.55) - 4.9(.55)^2 y at top = 2.46 b) u = 6.7 cos 53 x = u t x = (6.7 cos 53)(.55) x = 2.22

Simple Subjects
What is the complete and simple subject for, One story links this day to an old Roman festival?

Simple Subjects
What is the complete and simple subject for, One story links this day to an old Roman festival?

geometry
Given three collinear points X, Y, and Z and XY=8 and YZ=20, what is the length of a segment joining the midpoint XY and YZ?

Physics
A ball swings in a vertical circle at the end of a rope 1.50 m long. When the ball is 35.9° past the lowest point on its way up, its total acceleration is (-22.5 i + 20.2 j)m/s^2. Find radial acceleration?

MAth (make equation true)
5+5*6/2=24

Math
your aunt gives you a check on your birthday each year. on your first birthday , she gives you a check for one cent. the next year she gives you 3 cents , then 9. each year she triples the amount of the previous year 's check. how old will you be when she gives you a check...

geometry
Given the points K=(-2,1) and m(3,4), find coordinates for a point J that makes angle JKM a right angle.

Calculus Precalculus
Answer the calculus question about Point P, 45 mph, etc. It is ALREADY posted on here.

math
write an equation to show the relationship between the score received and the number of questions the students answers correctly

Calculus
Hey, how come no one has answered parts c through e? I need some help here!!! This is the ONLY site on the internet that has this problem worked.

Calculus
Hey, how come no one has answered parts c through e? I need some help here!!! This is the ONLY site on the internet that has this problem worked.

chemistry
If 1/2 moles of 02 react with 24 moles of hydrogen, can 2 moles of water be produced?

Chemistry
A gas at 1.5 atm, 2.3L, and 23degreeC changed to 1.0 atu and 2.8L. What is the new temperature?

Chemistry
Calculate the mass of NaCl produced when 5.50 moles of Sodium reacts with excess chlorine gas.

chemistry
and List all measurements and include proper labels. Molecular weight of benzoic acid: 122.12 g/mole Mass of benzoic acid used: Titration of NaOH and benzoic acid: (Fine Titrations Only) Trial 1 Trial 2 Initial volume(NaOH)(ml) final volume(NaOH)(ml) Calculations/Interpretatio...

chemistry
PLEASE NOTE: Titration requires several steps in order to obtain exact results. The procedures described in this lab assume that you have already done the TITRATION TUTORIAL and are familiar with the technique. 1. Prepare the NaOH solution by dissolving approximately 4g of sol...

math- algebra- help please!
3 dice are rolled let (y,r,b) represent each outcome? a- sample space b- prob rolling a sum of 18 c- prob of rolling a sum less than 5

Spanish
A usted _______gusta jugar a los deportes. What goes in the blank?

Calculus
The Problem: The spherical top holds a little over 54,000 gallons of water. The base of the top is 60 feet above the ground. The diameter of the supporting column is one-third the radius of the sphere. The base of the supporting column flares out like a cone (a frustum) so tha...

physics
A certain roller coaster has a circular, vertical loop of radius 10 meters, such that at its top the riders are upside down. How fast does the roller coaster move at this point if the riders feel perfectly weightless when passing the top of the loop?

math
how do i write a decimal and a fraction to show what part of a dollar one penny represents

algebra2/trig
4.8 hours

Algbra
I need help with the following question. Solve for y: 3x - 2y = 8 + x Please show the steps and the answer, thanks.

Geometry
find the lengths of the sides of a triangle whose perimeter is 37. The measure of the first side of the triangle is 8 less than the second side, and the second side is twice the length of the third side

Algebra
Please help me solve for the following coefficients. The equation is: 2X-Y=4 if X = 0, then Y = ? if Y = 0, then X = ? if X = 1, then y = ? if Y = -6, then X =? Thanks!

physics
Approximate the gravitational force of attraction between a 49.0 kg girl and a 52.0 kg boy if they are sitting 2.5 m apart

Algebra 2
A Rectangular Field is to be enclosed by a fence and divided into three parts by another fencer. Find the maximum area that can be enclosed and separated in this way with 500 meters of fencing.

Algbra
I need help with the following problem. -6 less than or equal to 3 + 1/3a less than or equal to 5 Please show steps and answer. Thanks.

Physic
A ball throw at 45 degree angle with an initial speed of 15m/s. the time for the ball to reach its highest point can be found from the data and known constants using which equation? solve for time?

college calc
vertical asymptotes of tan(pi*x)

Algbra
1/4x - 5/12x = x - 4/3 Please show steps and answer. Thanks.

math
If g(x)= -2^2 and h(x)=x-2/5. Find the indicated value. h(g(5)) I got -5.4. is that right?

chemistry
How many grams are in one milliliter?

math
(y^4)^1/6

chemistry
your carbon atoms aren't equal and i didn't split up my carbon dioxides however it should change anything balancing wise. 2C3H6N6O6 + 3O2==> 6h20 +6CO2(or 3CO2 +3CO2) + 6N2 C=6 C=6 H=12 H=12 N=12 N=12 O=18 O=18 Hope this helps!

Algbra
How do you solve this problem? 3/5k - (k + 1/3) = 1/15 (k + 3) Please show me the steps. Thanks.

chemistry
In my book the anser for D is 2.68 x 10^4 mg/L as CaCO3, my first thought was to do what you did but i cant get to the answer in the book, am I missing something very obvious here? Im getting like 5.4 x 10^4

math
4(3)+4(3) *4 *4 --------- 12+12=24

physics
A museum curator moves artifacts into place on many different display surfaces. Use the values in Table 4-2 in the textbook to find Fs,max and Fk if you were to move a 157 kg aluminum sculpture across a horizontal steel platform. Fs,max: Fk:

Math
Are (1/2 x 3) x 8 and 3 x (1/2 x 8) equal? Explain how this can help in finding the area of a triangle

math
I need to variables would equal 180 by being divided by 1/2

math
A=1/2bh A= 1/2 ? ? A= 180 what could the base and height be?

math
How does (1/2 x 3) x 8 and 3 x (1/2 x 8) being equal help in finding the area of a triangle?

math
Finding the area or a triangle A=1/2bh A= 1/2 x 13.6 x 7

math
How do I find the area of a triangle?

Chemistry
calculate the number of formula units of 0.0067 g of lithium carbonate, Li2CO3?

Chemistry
How many grams of potassium can be obtained from the decompostion of 100 grams of KCl?

chemistry
How much iron can be recovered from 25.0 grams of FeO?

science
In order for conduction to occur particles must make what?

algebra
86 degrees Fahrenheit = 30 degrees Celsius so, (30,86)

Physics
I have one problem I just can't figure out, A machine in an ice factory is capable of exerting 3.30 * 10^2 N of force to pull large blocks of ice up a slope. The blocks each weight 1.21 * 10^4th N. Assuming there is no friction, what is the max angle that the slope can mak...

physics
A. 5.729 m/s^2 B. 51.5625 m/s^2 C. 183.333m D. 70,088m

physics
A. a = v/t 165km / 8s = 20.625 km/h/s B. t= 60s-8s =52s, V= 1650km/h-165km/h =1485km/h a=v/t 1485km/h / 8s= 185.625km/h/s C. d=1/2at^2 1/2 * 20.625 km/h/s * (8s)^2 = 183.333m D. 60s-8s=52s d=1/2at^2 1/2 * 186.625km/h/s * (52s)^2 = 70.088km

analogies
dollar:cent;meter:centimeter

math
I would set up a proportion meters 1 x ---- --- --- scale 2.5 100 (% means out of a hundred) Since 25 x 40 = 100, then 1 x 40 = 40 The bridge is 40m long.

Math-Algebra
3|x+5|<= 6 |3x+15|<= 6 -15 -15 |3x| <= -9 /3 /3 x <= -3 Yes, you are correct.

algebra
You need to set up the proportion Base 6.5m 4m ---- ---- ---- Length 3.7m e Then you cross multiply: 6.5xe=6.5e 4x3.7= 14.1m So therefore, 6.5e = 14.1m Then divide both by 6.5 to get what e equals. 6.5e/6.5 = e 14.1/6.5 ≈ 2 so e ≈ 2.

Teacher Aide
Test scoring

math
Is this a star polygon, a polygon, or other, how many sides does it have? {9/3}

math
A roulette wheel has 18 red slots and 18 black slots numbered alternaetly with the numbers 1 through 36. Two green slots are numbered 0 and 00. The winning number is determined by the slot into which a single marble rolls. Players are not allowed to bet on green. The house win...

algebra
1/3(x+3)+1/6(x-6)=x+3

Math
When a survey of 800 people was done, 55% of those surveyed said they ate candy, 65% said they ate chips and 90% said they ate hot dogs. What is the smallest possible number of people who said they ate candy, chips and soda? -Zach

math
20 divided 2 minus 24 divided by 3 equals ? No parenthesis

Math
The side lengths of a right triangle are each an integral number of units. If one of the legs is 13 units, what is the perimeter of the triangle? Thanks ~Zach

Math
Six pipes each having a radius of 0.5 feet are stacked in a triangular pile with three pipes on the ground tangent to each other, two in the next row and one on top. What is the height of the pile. Express you answer in simplest radical form

algebra
Graph the linear equation. -3x + y = -6

math
Graph the linear equation. -3x + y = -6

Math
Thank you

Math
A large tank contains 400-kg mixture of water and alcohol. The mixture is 64% alcohol by weight. At each step, 100 kg of the mixture will be drained from the tank, replaced with 100 kg of water and then stirred. After three steps, what percent of the final solution will be alc...

alegbra
Simplify: 5-3[2(3x-4)+3]

math
Simplify 5-3[2(3x-4)+3]

math
thank you jen

math
m+1 --- 4 + 5 -- 6 = 2m-1 ---- 12

algebra
Please help me! Sorry there are 4 questions I need to check my attempts with to see if I am on track. Thanks!! 1. 5-3[2(3x-4)+3] 2. Evaluate when x = -3 and y = 2 3x squared - 4y squared _______________________ 4x - 7y 3. -3/4y = -24 4. m + 1 5 2m - 1 ______ + ___ = ______ 4 6 12

algebra
Please help me! Sorry there are 4 questions I need to check my attempts with to see if I am on track. Thanks!! 1. 5-3[2(3x-4)+3] 2. Evaluate when x = -3 and y = 2 3x squared - 4y squared _______________________ 4x - 7y 3. -3/4y = -24 4. m + 1 + 5 = 2m - 1 ______ _ _______ 4 6 ...

9th grade - Civics
I'm doing a crossword. The question is what is the term to "postpone a sentence/fine?" It starts with an R_ _ _ I _ _ _. Thought it was suspend but this isn't right. Any help is great

math
Thank you very much Reiny!

math
2(x-5)+3x < 4(x-6)+1

9th grade Algebra
go to hell!!!

math
Thank you so much Reiny.

math
With income earned by selling the rights to his life story, an actor invests some of the money at 3% and 30,000 more than twice as much at 4%. The total annual interest earned from the investments is $5600. How much is invested at each rate?

Math
How many positive three-digit integers have the property that the tens digit is greater than or equal to the hundreds digit and the ones digit is greater than or equal to the tens digit? Please help :) thanks -Zach

math
Thank you so much Reiny.

math
The value of a "Mint State-63" 1950 Jefferson nickel minted at Denver is 8/7 the value of a 1945 nickel at Philadelphia. Together, the total value of the two coins is $15. What is the value of each coin?

Math
1/2 dozen eggs is 6. If 1/3 of 6 gets broken, it means 2 broke. 4 are not broken. If I understood the question correctly, this should be the correct answer.

algebra
Thanks so much Reiny!

algebra
6/7S - 3/4 = 4/5 - 1/7S + 1/6

Social Studies
I don't get it, so the four influences that Greece had on Roman culture are art, religion, mythology, and the Latin alphabet?

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