Friday

September 30, 2016
Total # Posts: 133

**Physics**

A car traveling in a straight line has a velocity of 3.7 m/s at some instant. After 7.99 s, its velocity is 12.2 m/s. What is its average acceleration in this time interval? Answer in units of m/s 2

*September 20, 2016*

**Physics**

A car accelerates uniformly in a straight line from rest at the rate of 3.6 m/s2 . What is the speed of the car after it has traveled 61 m? Answer in units of m/s

*September 20, 2016*

**math**

In a country, 15 out of 100 residence had no auto insurance. The population in that country at that time is 240 million. How many residence of that country had no auto insurance? thanks :))

*July 28, 2016*

**math**

A motor travels 20 km/hr faster than the bicycle. If the motor travels 240 km, while the bicycle travels 180 km at the same time. Find the speed of the motor and the speed of the bicycle. thanks :))

*July 28, 2016*

**pre cal**

thank you!

*July 19, 2016*

**pre cal**

Find a formula for the inverse of the function. f(x)=1−(2/x^3) and f(x)=sqrt(x^2+7x)

*July 19, 2016*

**pre cal**

ok got it thx!

*July 19, 2016*

**pre cal**

for the first i got (?,21) for the second (?,-41) im stuck

*July 19, 2016*

**pre cal**

The graph of y=v(x) contains the point (−12,−8). What point must be on the graph of each of the functions below? Enter points as (a,b) including the parentheses. The graph of y=−(v(1/4(x+13))−13) must contain the point (?,?) The graph of y=4v(−3x...

*July 19, 2016*

**pre cal**

nvm got it lol

*July 17, 2016*

**pre cal**

The domain of y=g(x) is −1≤x≤11 and the range is −13≤y≤16. Give both the domain and range of the following two functions as inequalities. (a) y=g(12x) (b) y= 3g(x)

*July 17, 2016*

**math**

What is the volume of a balikbayan box with a length of 21√5 inches, width of 12√3 inches and a height of a 25√3 inches? Thank youu!!

*July 14, 2016*

**pre cal**

A toy rocket is launched straight up from the roof of a garage with an initial velocity of 56 feet per second. The height h of the rocket in feet, at t seconds after it was launched, is described by h(t)=−16t2+56t+17. Find the maximum height of the rocket.

*July 12, 2016*

**pre cal**

Suppose you inscribe a square in a circle of radius r. Thus all four corners of the square lie on the circle. The area of that square is ?

*July 12, 2016*

**pre cal**

Suppose the speed of sound is c, and gravity is g. If you throw a rock from an initial height h0 and with an initial velocity v0 the height h(t) of the rock after time t is h(t)=−g/2 t^2+v0 t+ h0. (The height is negative when the rock is below ground level. Thus you can ...

*July 11, 2016*

**pre cal **

Write a quadratic function that has roots of 41 and P.

*July 11, 2016*

**pre cal **

1/(x-1)- x/(x+1)-2=0

*July 11, 2016*

**pre cal **

(x/x-1)-(x/x+1) -2=0

*July 11, 2016*

**pre cal **

quadratic equation 2x^4-5x^2+2=0

*July 11, 2016*

**pre cal**

Ty! :)

*July 11, 2016*

**pre cal **

2x−5√x+2=0 quadratic equations

*July 11, 2016*

**pre cal**

6x^2−4x+ ?=6(x− ?)^2.

*July 7, 2016*

**pre cal**

x^2+bx+ ?=(x+ ? )^2.

*July 7, 2016*

**pre cal**

This is like the preceding problem, except that your answers may be negative x^2+7/3x+ =(x+ )^2. x^2−5/7x+ =(x+ )^2. x^2+2/3x+ =(x+ )^2.

*July 7, 2016*

**pre cal**

This is like the preceding problems except that your answer is an algebraic expression. x2+2sx+ =(x+ )2.

*July 6, 2016*

**pre cal**

Use factoring to solve the polynomial equation: HINT: Try multiplying each side of the equation by a number to eliminate the denominators. x2/162 + X/18 + 1/9 =0

*July 6, 2016*

**pre cal**

yes correct thank you so much!!!!

*July 6, 2016*

**pre cal**

incorrect

*July 6, 2016*

**pre cal**

A cash register contains only ten dollar and tenty dollar bills. It contains three times as many ten dollar bills as twenty dollar bills and the total amount of money in the cash register is $1,950. How many ten dollar bills are in the cash register?

*July 6, 2016*

**Math**

1. You want to carpet a square room with an area of 350 square meters. You have a carpet that measures 5√14 by 3√14 meters. What is the length of the carpet to be added in able to fulfill the room? Thank You!!

*July 6, 2016*

**Art**

I think it's A

*March 31, 2016*

**language arts**

@Ms. Sue DUH!!!!! SHE WANTS THE ANSWWER

*March 16, 2016*

**Geometry**

S=4πr2

*March 10, 2016*

**Psychology**

It was A. Thank you for answering :) I was just over thinking it.

*January 30, 2016*

**Psychology**

meant C I know it isn't D *stops posting*

*January 30, 2016*

**Psychology**

or could it also be D? I think I might be overthinking this one lol

*January 30, 2016*

**Psychology **

Individuals who use problem-focused coping will deal with a problem or stressor by: A. making changes in their behavior. B. accepting support through sympathy. C. changing their point of view concerning the stressor. D. attempting to manage their emotions. was going to choose ...

*January 30, 2016*

**math, PLEASE HELP!**

He is correct.^

*October 15, 2015*

**physics**

An astronaut on a strange planet nds that she can jump a maximum horizontal distance of 30 m if her initial speed is 9 m/s. What is the acceleration of gravity on the planet? θ=45° because maximum distance R=(Vi²/g)(sin2θ) g=2.7m/s² correct?

*October 1, 2015*

**physics**

A net horizontal force F =A +Bt^3 acts on a 2kg object, where A = 5N and B = 2N/s3. What is the horizontal velocity of this object 4.0 seconds after it starts from rest? F=ma=5+2t^3 a=2.5+t^3 V=2.5t+(1/4)(t^3) therefore, at t=4, V=74m/s Is this correct?

*October 1, 2015*

**physics**

2,940 Pa

*September 20, 2015*

**math**

integrate x(xsin(x)dx from 0 to pi

*September 17, 2015*

**math**

Thank you!

*September 7, 2015*

**math**

Thank you

*September 7, 2015*

**math**

33 1/3

*September 7, 2015*

**math**

I know the answer I just don't get why that's the answer

*September 7, 2015*

**math**

I just need the percentage please and thank you

*September 7, 2015*

**math**

I just need the answer

*September 7, 2015*

**math**

I don`t get it

*September 7, 2015*

**physics**

When a car screeches to a sudden stop to avoid hitting a dog, it slows down from 9.00 m/s to 0.00 m/s in 1.50 s. Find the average acceleration of the car?

*July 22, 2015*

**math please help**

In a triangle, the lengths of the sides are 3,7,and 8. If the perimeter of a similar triangle is 54, what is the length of the longest side of the larger triangle? *Im not sure on how to begin solving*

*February 19, 2015*

**Math **

Nine friends share pumpkin pies equally. What fraction of a pumpkin pie does each friend get ?

*February 18, 2015*

**Math**

Val walks 2 3/5 miles each day. Bill runs 10 miles once every 4 days. In 4 days, who covers the greater distance?

*February 2, 2015*

**Math**

Write a numerical expression that represents the sum of 9 squared and 35

*November 11, 2014*

**Math**

What is half of 850

*September 27, 2014*

**Algebra1**

[(40+5)-3^2]➗9•2 = 8•6,,43,,8,,or 2❓

*September 4, 2014*

**English**

Which one of the following sentences includes a possessive pronoun? A. She will never agree to that. B. She stood up for people's rights. C. He is a mighty opponent. D. Its paws were caked in mud

*April 10, 2014*

**math**

what is the prime factorization of 13?

*October 2, 2013*

**physics**

A rocket blasts off. In 10.0 seconds it is at 10,000 ft, traveling at 3600 mph. Assuming the direction is up, calculate the acceleration. (Hint: the rocket is not under constant acceleration).

*September 9, 2013*

**business**

Have anyone checked to see if these answers are correct?

*June 29, 2013*

**Statistics**

Suppose the variable x is the number of minutes walked each week and the variable y is the blood cholesterol level given by the following table: x y 31 290 60 278 90 259 120 238 150 219 Using the regression equation, predict cholesterol levels when walking is 175 minutes per ...

*May 24, 2013*

**Chemistry**

So we're doing oxidation-reduction reactions and batteries and voltages. We did a lab where we would take two metals, put it in a mixture (bleach/water/vinegar/salt) and used a voltmeter to see the DC voltage. Now we're supposed to 'calculate the potential ...

*May 5, 2013*

**Algebra **

Mr. Rodney's English class is made up of 28 students. He has 6 ESL students, 10 remedial students, and 5 advanced learners. ESL students make up 1/5 of the remedial students and 3/5 of the advanced learners. 1. What is the probability that a student is ESL and remedial? 2...

*February 24, 2013*

**Science**

Alright, I had thought that but it seemed a little weird :x thank you!

*January 14, 2013*

**Science**

Chemistry! So a metal is found to absorb 1000 calories as it is heated from 40.0C to 60.0C. How much heat would the same sample absorb if it were heated from 60.0C to 80.0C? I know I'm supposed to use the equation Q=s x m x delta t (or soemthing) Q= energy absorbed s= ...

*January 14, 2013*

**physics**

A 83-kg man stands on a spring scale in an elevator. Starting from rest, the elevator ascends, attaining its maximum speed of 1.2 m/s in 0.76 s. The elevator travels with this constant speed for 5.0 s, undergoes a uniform negative acceleration for 1.8 s, and then comes to rest...

*October 23, 2012*

**statistics**

Find the minimum sample size that should be chosen to assure that the proportion estimate p will be within the required margin of error, .06. Use a 95% confidence interval and a population proportion of .7. The critical value for a 95% confidence level is 1.96 Find the test ...

*October 14, 2012*

**statistics**

1) A group of scientists created 150 trials to measure whether electric shock treatment could cure paranoid delusions. Of these trials, 52 were successful. Find the margin of error E that corresponds to a 95% confidence level. The critical value for 95% confidence level is 1....

*October 14, 2012*

**math**

A circular lake is 30 miles across at its widest point. What is the area of the lake in acres? Round your answer to the nearest tenth of an acre.

*October 8, 2012*

**math**

the product of 3 whole numbers equals 8 and their sum equals 7

*September 24, 2012*

**math**

Does (-4a)^2 = 16a^2 or -4a^2 ???

*September 3, 2012*

**Math**

How would you simplify the cubed root of 54x^17 ??

*August 23, 2012*

**geometry**

The following are angles in a convex quadrilateral: Angle A = 75.3 degrees Angle B = 114.8 degree Angle C = 65.9 degrees What is the measure of the missing angle?

*June 4, 2012*

**Algebra; MAJOR HELP**

Solve the equation. Provide an explanation please. s^2-7s+14=2

*February 26, 2012*

**chem**

I just need to know the net ionic equation and balance them. I figured the equation. but the net and balance is harder. Co(NO3)2 (aq) + NaOH (aq) = CoOH (s) + Na(NO3)2 (aq) Co(NO3)2 (aq) + Na2CO3 (aq) = CoCO3 (s) + Na2(NO3)2 (aq) Co(NO3)2 (aq) + Na3PO4 (aq) = CoPO4 (s) + Na3(...

*February 18, 2012*

**chemistry help please **

Given the following data: MnO(s) + H2(g) Mn(s) + H2O(l), H = 100 kJ MnO2(s) + 2 H2(g) Mn(s) + 2 H2O(l), H = –52 kJ use Hess's law to calculate the heat of the reaction MnO2(s) + H2(g) MnO(s) + H2O(l)

*January 11, 2012*

**Levy**

Given the following data: MnO(s) + H2(g) Mn(s) + H2O(l), H = 100 kJ MnO2(s) + 2 H2(g) Mn(s) + 2 H2O(l), H = –52 kJ use Hess's law to calculate the heat of the reaction MnO2(s) + H2(g) MnO(s) + H2O(l)

*January 11, 2012*

**Applied College Msthematics**

jennifer stemberg borrowed money to buy a car at 13.5% simple interest from her credit union. If the loan was repaid in 2 years and the amount of interest was $ 2,700, how much did jennifer borrow?

*January 4, 2012*

**PSYCHOLOGY HELP PLEASE!!**

There was nothing to cause the "attack", it came out of no where which is what makes me think it was a panic disorder aka panic attack

*December 6, 2011*

**physics**

A rotating uniform cylindrical platform of mass 240 kg and radius 5.7 m slows down from 3.9 rev/s to rest in 16 s when the driving motor is disconnected.

*November 18, 2011*

**physics**

A car starts from rest and travels for 7.8 s with a uniform acceleration of 3.2 m/s2. The driver then applies the brakes, causing a uniform acceleration of −1.1 m/s2. If the brakes are applied for 2.8 s, how fast is the car going at the end of the braking period? Answer ...

*October 30, 2011*

**physics**

The speed of light in clear plastic is 1.866 ×10^8 m/s. A ray of light enters the plastic at an angle of 29.3 degrees. At what angle is the ray refracted?

*September 26, 2011*

**math**

i need to draw a fraction strip showing that the two fractions 2/5 and 6/15 are equivalent. i forgot how to do this

*September 26, 2011*

**maths**

3)a=-12 d=3 t(5)=a+(n-1)d =-12+(5-1)3 =0 s(50)=3625 hope it would be a help. :)

*September 25, 2011*

**HCS341**

ok thank you now i understand thanks, and to answer your "case scenario" no the teacher couldn't afford it because if the kid messed it up that would be wasting money and he had to make sure that everyone knew EXACTLY what they were doing ! thanks! :)

*April 3, 2011*

**HCS341**

that they wouldnt know what they are doing and instead of helping they be doing the opposite , i undertand that part and i need a 700 word paper and i got 350 but i dont understand what they mean by the descriptiopn of the process... is that like what needs to be done before ...

*April 3, 2011*

**HCS341**

can someone explainwhy training and education are vital in health care and the importance of measuring competencies an is there a Description of the process for tracking and evaluating training effectiveness ? thanks

*April 3, 2011*

**Hcs341**

Explanation of why training and education are vital in health care Explanation of the importance of measuring competencies Description of the process for tracking and evaluating training effectiveness

*April 3, 2011*

**math**

Work out area and diameter and volume if circumference is 16cm and height 2cm

*March 25, 2011*

**geometry**

no picture is posted

*March 4, 2011*

**Chemistry**

For Mn3+, write an equation that shows how the cation acts as an acid.

*February 12, 2011*

**Chemistry**

what is the pH of 0.316 M KC6H5O? what is the pH of 0.245 M CH3NH3I?

*February 12, 2011*

**Chem Honors**

at what temperature will nitrogen gas have a density of 1.13 grams/meters at a pressure of 1.09 ATM

*February 11, 2011*

**spanish**

Los fines de semana yo hago mi tarea y estudio. Yo siembre trabajo los fines de semana. cuando yo trabajo en las mananas,paso tiempo con mis amigos por la noche. yo juego cuando no estoy trabajando o estudiando yo voy al cine. Hay muchas cosas a mi me gusta hacer en mi tiempo ...

*December 7, 2010*

**Chemistry**

Write a balanced redox reaction between mercury and bromine to form Hg2^2+.

*December 6, 2010*

**Chemistry**

Write a nuclear equation for the most likely mode of decay for each of the following unstable nuclides: Kr-74, Th-221, Br-85, Ar-33

*December 4, 2010*

**Science**

How is an oxide ion formed?

*December 3, 2010*

**Biology**

Give an example of a tandem cluster and describe which protein it will produce.

*December 1, 2010*

**Word within the Word Analogy Help**

Actually no, both are not d. contrapuntal means composing of two or more relatively different melodies, and polyphony means different sounds. Choice A, contradictory means opposite sounds and disruption means division. So choice A is the correct answer, NOT Choice D. For the ...

*November 1, 2010*