Wednesday

October 22, 2014

October 22, 2014

Total # Posts: 72,878

**algebra 2**

negative one sizth of a number is less than -9 define a variable: write an inequality: -1/6n<-9 solve: ?
*September 22, 2014*

**algebra 2**

negative 12 times a number is no more than 84 define a variable: write an inequality: -12n<84 solve: n>-7
*September 22, 2014*

**algebra 2**

one eighth of a number is less than or equal too 3 define a variable: write an inequality: 1/8 n < or equal too 3 solve: ?
*September 22, 2014*

**algebra 2**

define a variable, write an inequality, and solve each problem. check your solution 1. four times a number is greater than -48 define a variable: write an inequality: 4n>-48 solve: n>-12
*September 22, 2014*

**algebra 2**

-y<36 = y>36
*September 22, 2014*

**algebra 2**

x/4<9 x<9*4=36 x<36 a/9>or equal to -15 a> or equal too -135 -p/7>-9 -p>-63 p<-63 -t/12> or equal too 6 -t> or equal to 72 t< or equal too 72 how do u do these
*September 22, 2014*

**math**

Add the operation signs and parentheses where needed. 6 5 9 2 = 77
*September 22, 2014*

**math**

Follow the order of operations and find the missing number: 20+5 x(?+6)-12/2=64
*September 22, 2014*

**Chemistry **

4) Using your initial mass of copper (0.38), calculate the minimum volume of concentrated 12M nitric acid needed to completely react with your copper to form copper (II) nitrate 5) Using your answer from question 4 (2x10^-3 L), calculate the minimum volume of 6M sodium ...
*September 22, 2014*

**Precalculus**

Find two values for theta such that theta is greater than or equal to 0 but less than or equal to 2pi. 1. Tan theta=1.1071 2. Sin theta = -0.8818
*September 22, 2014*

**pre cal**

Find b, given that a = 18.2, B = 62°, and C = 48°. Round answers to the nearest whole number. Do not use a decimal point or extra spaces in the answer or it will be marked incorrect.
*September 22, 2014*

**Math**

So it would be 4x + 5 = 2x - 9 because it says 'five added to 4'
*September 22, 2014*

**Math**

Five added to 4 times a number is equal to 9 less than 2 times the number. 9x + 2 = 5x + 4 5x + 4 = 9x - 2 *my answer 4x - 5 = 2x + 9 4x + 5 = 2x - 9
*September 22, 2014*

**physics**

A speeder passes a parked police car at a constant speed of 39.2 m/s. At that instant, the police car starts from rest with a uniform 2 is overtaken by the police car? Answer in units of s acceleration of 2.77 m/s . How much time passes before the speeder
*September 22, 2014*

**Math**

14+2m = 4m - 16 (no multiple choice) I don't understand it 4(x +2) = 14 - 2(3 - 4x) (no multiple choice) Eight subtracted from 4 times a number is equal to 4 less than 6 times the number. (not multiple choice) my answer is 8x - 4 = 4x - 6
*September 22, 2014*

**Finance**

Use the following information to calculate the covariance of asset A with an equally weighted portfolio of assets B and C. Asset Standard Deviation A 20% B 30% C 40% The correlation coefficient between A and B is 0.6. The correlation coefficient between A and C is 0.5. The ...
*September 22, 2014*

**physics**

The masses of these particles are mA = 374 kg, mB = 516 kg, and mC = 155 kg. d1 = 0.414 m and d2 = 0.207 m. Calculate the magnitude of the net gravitational force acting on particle A.
*September 22, 2014*

**algebra**

a charges $50 for gate and $3.50 per foot b charges $75 for gate and $2.25 per foot how many feet of fencing would result equal estimates?
*September 22, 2014*

**algebra**

total $3.25 worth of coins nickels, dimes, quarters 2morenickels than dimes 1 more quarter than nickels how many of each coin
*September 22, 2014*

**chemistry**

In a butane lighter, 9.2g g of butane combines with 32.9g g of oxygen to form 27.8g g carbon dioxide and how many grams of water?
*September 22, 2014*

**Math**

For y=3 +7 cos 5 (theta - 28 degrees) Find y when theta=321 degrees
*September 22, 2014*

**Math**

Show that a triangle with sides 3,4,5 inches long is a right triangle. Find the measure of the larger acute angle
*September 22, 2014*

**Chemistry**

A 530 mL solution 10% HCl has been spilt onto the bench. It cannot be diluted or washed away. How much of the granular NaOH from the container seen in a previous photograph, must be used to neutralise the acid? [Using NaOH: MM = 40 g/mol]
*September 22, 2014*

**Precal**

What is the exact value of sec theta if the terminal side of 0 contains the point (-7,13)
*September 22, 2014*

**Math (corrected)**

Oh sorry I meant 3^2-12/(6-3)*8
*September 21, 2014*

**Math**

3^2=12/(6-3)*8
*September 21, 2014*

**Chem**

After 450 years how many grams of C-14 will remain from a 100.0 g sample
*September 21, 2014*

**math**

What is the value of the expression?
*September 21, 2014*

**physics**

traveling 7.7 meters per second, decelerate at 1.5 meters per second squared, how long til get back to starting point.
*September 21, 2014*

**physics**

In the figure, a ball is thrown leftward from the left edge of the roof, at height h above the ground. The ball hits the ground 1.52 s. later, at distance d = 30.5 m from the building and at angle θ = 61° with the horizontal.
*September 21, 2014*

**algebra**

3x-5y+5z=-19 5x-4y-3z=-45 x-y+4z=12
*September 21, 2014*

**Physics**

A baseball is hit with a velocity of 30 m/s at an angle of 38.2 degrees above the horizontal. An outfielder, who happens to be very good at 2D Kinematics, figures out exactly where its going to land.Knowing he is exactly 8 meters away from the landing point, and that his ...
*September 21, 2014*

**College Physics**

(II) You are explaining why astronauts feel weightless while orbiting in the space shuttle. your friends respond that they thought gravity was just alot weaker up there. convince them and yourself that it isn't so by calculating the acceleration of gravity 250 km above ...
*September 21, 2014*

**Algebra 2**

Please help
*September 21, 2014*

**Algebra 2**

Somebody help
*September 21, 2014*

**chemistry **

Does adding the wrong amount of water to a compound when recrystallizing affect percent recovery?
*September 21, 2014*

**Auditing**

For each of the following audit procedures, identify which audit objective(s) is/are being addressed: a. Inquiry of the client’s legal counsel as to whether there is any outstanding litigation against the client that they are aware of. b. Taking a sample of items from the...
*September 21, 2014*

**physics**

A blue ball is dropped from a height of 3.8 m above a classroom floor while a red ball held at the same height is thrown horizontally with a speed of 5 m/sec. Find The initial velocity and acceleration of each ball (the positive x-direction is the direction the ball is thrown ...
*September 21, 2014*

**Physics**

An animal loving subway train conductor sees a happy little subway rat on the tracks 125 meters ahead of his current position. If the train is moving at 18 m/s, how long can he wait before beginning to apply the brakes? The maximum safe braking rate of the train is 1.80 m/s^2.
*September 21, 2014*

**Algebra**

x^3-2x^2-1+2=0?
*September 21, 2014*

**HR management**

Susan Moore is the number manager in charge of a 25-bed medical unit at St. Eligius Hospital. She is currently preparing the nurse staffing plan for the next fiscal year. Hospital management has provided all nurse managers with a list of assumptions for staff planning, most of...
*September 21, 2014*

**Chemistry**

Given: Cu2O(s) + 1/2 O2(g) → 2CuO(s) deltaH°= -144 kJ 2Cu2O(s) → 2Cu(s) + 2CuO(s) deltaH°= 22 kJ Calculate the standard enthalpy of formation of CuO(s).
*September 21, 2014*

**essential web publishing skills**

which of the qualities required for a good document is violated in the following passage?
*September 21, 2014*

**Chemistry**

Okay... but I tried that answer and it was incorrect.
*September 21, 2014*

**Chemistry**

When i did that I got -940 kJ but that isn't and option and neither is -1000kJ. So by default would the answer be F.
*September 21, 2014*

**Chemistry**

Hydrogen cyanide is produced in the following balanced reaction. 2NH3 (g) + 3O2 (g) + 2CH4 (g) → 2HCN (g) + 6H2O (g) Given the following standard heats of formation, calculate the approximate ΔH°rxn of this reaction. Substance ΔHf°(kJ/mol) NH3 -46 CH4 -...
*September 21, 2014*

**physics**

Starting from rest, a car accelerates down a straight road with constant acceleration a for a time t, then the direction of the acceleration is reversed, (i.e., it is a), and the car comes to a stop in an additional time t, the time for the whole trip being 2t. At what...
*September 21, 2014*

**health care**

complete the calculations for "Skill Builder: Human Resource Forecasting Assignment" in the course text Human Resource Management Applications.
*September 21, 2014*

**Health--Check my answers**

1. The best way to describe fitness is: being slim and low in body fat being big, strong, and “buffed” being flexible and having a sense of overall well-being *** all of the above 2. The best way to describe wellness is: making positive choices *** folding under peer...
*September 21, 2014*

**geography**

which states is farthest East?
*September 21, 2014*

**Math**

my garden last year was a square with sides 28 ft. this year i added a section that is an isosceles triangle at one end of my square garden to form the figure below. if each of the two equal sides of the triangle is 18 feet. i'm having a problem with deer this year and ...
*September 21, 2014*

**maths**

let d be the HCF of 24 and 36 . find two no.s and b such that d = 24a + 36b
*September 21, 2014*

**physics**

A girl want to know the distance of a tree from where the point R where she is standing ,she used a convex lens to project the image of the tree onto a wall of 15M away ,she later moved the lens toward the tree and found that the image is again projected on the wall after ...
*September 20, 2014*

**physics**

During a baseball game, a batter hits a high pop-up. If the ball remains in the air for 4.59 s, how high does it rise? The acceleration of gravity is 9.8 m/s2 .
*September 20, 2014*

**physics**

A model rocket is launched straight upward with an initial speed of 45.6 m/s. It acceler- ates with a constant upward acceleration of 2.88 m/s2 until its engines stop at an altitude of 151.6 m. 1. What is the maximum height reached by the rocket?
*September 20, 2014*

**chemistry**

The number of kilojoules needed to raise the temperature of 125 g of water from 20°C to 95°C is ________. The specific heat of water is 4.184 J/g °C.
*September 20, 2014*

**physics **

A car travels along a straight stretch of road. It proceeds for 11.4 mi at 57 mi/h, then 21.8 mi at 43 mi/h, and finally 30.8 mi at 32.6 mi/h. What is the car’s average velocity during the entire trip?
*September 20, 2014*

**The Scarlet Ibis**

Why does Doodle die in the end? Why does the narrator leave Doodle behind at the end?
*September 20, 2014*

**Algebr**

Find the inverse of..... f(x)=(4x-1)/(2x+3) Is the inverse this: f^-1(x)= (1/2)((-3x-1)/(x-2))
*September 20, 2014*

**Mathis**

The temperature is 15 degrees Celsius . It drops 34 degrees Celsius . What is the new temperature
*September 20, 2014*

**maths**

15 feet nearest to 1/2 cm
*September 20, 2014*

**Algebra**

Find the inverse of..... f(x)=(4x-1)/(2x+3) Is the inverse this: f^-1(x)= (1/2)((-3x-1)/(x-2))
*September 20, 2014*

**chemistry**

does alka seltzer dissolve faster in hot water or cold water experimental errors that could take place? could it be the same water temperature different time that alka seltzer is placed
*September 20, 2014*

**Spanish--check my answers please?**

Casas de cultura are geared toward____. young children teens adults all ages *** "Sobremesa " is an important cultural practice in the Spanish-speaking world that can best be described as ____. (1 point) a dance from southern Spain an after-meal conversation *** an ...
*September 20, 2014*

**physics**

this is wrong
*September 20, 2014*

**PHI208**

According to Aristotle, we should begin ethical inquiry by specifying:
*September 20, 2014*

**integrated computer applications**

to enhance the movement of graphic objects and bulleted text list in your slideshow. you shoould use
*September 19, 2014*

**chemistry**

25.0 mL of ethanol (density = 0.789 g/mL) initially at 5.5°C is mixed with 32.3 mL of water (density = 1.0 g/mL) initially at 25.3°C in an insulated beaker. Assuming that no heat is lost, what is the final temperature of the mixture?
*September 19, 2014*

**Business math**

Jerrika has $12,400 invested at a simple interest rate of 4.2%. Patrick earns only 3.85% on his investments. How much would Patrick need to invest in order to earn the same amount of interest per month as Jerrika?
*September 19, 2014*

**chemistry**

why does alka-seltzer dissolve faster in hot than cold water
*September 19, 2014*

**Math**

The width of a rectangle is 6 in. less than its length. The perimeter is 68 in. What is the width of the rectangle? (not multiple choice) my answer is 14 5(a-4) - 8a = 55 (not multiple choice) my answer -25 2n-7/3 = 15 (not multiple choice) my answer is 6
*September 19, 2014*

**Biology**

What is the role of Helicase in transcription? My textbook says RNA polymerase unzips the DNA during this process, so what does Helicase do?
*September 19, 2014*

**French**

I mean if it is grammatically correct...
*September 19, 2014*

**French**

Is it okay to say "Je pas mal" in response to how are you in French?
*September 19, 2014*

**Accounting**

An increase or decrease in accounts payable during a fiscal period has no effect on the net cash provided by operating activities.
*September 19, 2014*

**english**

SVIODOA
*September 19, 2014*

**english**

we painted the wall green yesterday. this pattern is svoca am i correct .
*September 19, 2014*

**Math **

The width of a rectangle is 6 in. less than its length. The perimeter is 68 in. What is the width of the rectangle? (not multiple choice) my answer is 14 5(a-4) - 8a = 55 (not multiple choice) my answer -25 2n-7/3 = 15 (not multiple choice) my answer is 6
*September 19, 2014*

**art history**

what are the causes of the pilgrimage of grace?
*September 19, 2014*

**math**

calculate the interest on a five-year loan of $13,950 at a 5.8% rate of interest.
*September 19, 2014*

**physic **

an elevator is accelerating downward at 3.5 m/s^2. A person standing inside releases a coin from 2 m above the floor. (a)how long will the coin take to reach the floor? (b)from the point of view of a person on a floor outside the elevator how much distance did the coin fall?
*September 19, 2014*

**French**

Is it okay to say "Je pas mal" in response to how are you in French?
*September 19, 2014*

**chemistry**

Does Alka-Seltzer dissolve faster in hot or cold water? background: give information about why this lab is important, what key principles are involved and explain them. i need 2 paragrpahs so i was thinking on writing a bit on what alka seltzer is but idk what else to put
*September 19, 2014*

**english**

We painted the wall green yesterday .
*September 19, 2014*

**physics**

A particle of mass m1 is kept at x = 0 and another of mass m2 at x = d. When a third particle is kept at x = d/4, it experiences no net gravitational force due to the two particles. Find m2/m1.
*September 19, 2014*

**statistics**

Calculate the approximate probability that the average time (taken over the 100 days) she spends waiting for a bus each day is more than 16 minutes
*September 19, 2014*

**physics**

A particle of mass m1 is kept at x = 0 and another of mass m2 at x = d. When a third particle is kept at x = d/4, it experiences no net gravitational force due to the two particles. Find m2/m1.
*September 19, 2014*

**physics**

Three balls A, B and C are kept in a straight line. The separation between A and C is 1 m, and B is placed at the midpoint between them. The masses of A, B, C are 100 g, 200 g and 300 g respectively. Find the net gravitational force on (a) A, (b) B, and (c) C.
*September 19, 2014*

**physics**

A non-conducting disk of radius 10cm lies in the x = 0 plane with its center at the origin. The disk is uniformly charged and has a total charge +30ìC. Find Ex on the x-axis at (a) x = 2 cm, (b) x = 5cm, (c) x = 10 cm, and (d) x = 20 cm.
*September 19, 2014*

**physics**

4. A cheetah can run 12 km in 0.9 hrs. Calculate its velocity.
*September 19, 2014*

**PHYSICS**

In Case A the mass of each block is 4.0 kg. In Case B the mass of block 1 (the block behind) is 8.0 kg, and the mass of block 2 is 4.0 kg. No frictional force acts on block 1 in either Case A or Case B. However, a kinetic frictional force of 7.8 N does act on block 2 in both ...
*September 18, 2014*

**Math Problem (please help)**

(6x^2-5x)(6x^2+5x)=0 x(6x-5)=0 x(6x+5)=0 x=0 (6x-5)=0 x=0 6x+5=0 6x=5 x=-5/6 x=5/6
*September 18, 2014*

**physics**

A boy 14.0m above the ground in a tree throws a ball for his dog, who is standing right below the tree and starts running the instant the ball is thrown. If the boy throws the ball upward at 50.0∘ above the horizontal, at 8.00m/s .
*September 18, 2014*

**PHI 208**

Thomas Nagel argues that all rules of engagement should be governed by the utilitarian principle that
*September 18, 2014*

**math**

If P0 > c (which implies that −1 < a < 0), then the logistics function P(t) = c 1 + ae−bt decreases as t increases. Biologists often use this type of logistic function to model populations that decrease over time. See the following figure. Apply this ...
*September 18, 2014*

**Trigonometry**

If P0 > c (which implies that −1 < a < 0), then the logistics function P(t) = c 1 + ae−bt decreases as t increases. Biologists often use this type of logistic function to model populations that decrease over time. See the following figure. Apply this ...
*September 18, 2014*

**English**

Batman or Star Wars and why?
*September 18, 2014*

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