Thursday

February 23, 2017
Total # Posts: 1,302

**Science**

Do light and sound travel at the same speed through solids, liquids, and gasses? What are the effects of light and sound traveling through different objects?

*February 23, 2017*

**physics**

In a friendly game of handball, you hit the ball essentially at ground level and send it toward the wall with a speed of 17 m/s at an angle of 39 ? above the horizontal. How long does it take for the ball to reach the wall if it is 3.8 m away? How high is the ball when it hits...

*February 20, 2017*

**physics**

A soccer ball is kicked with a speed of 16.7 m/s at an angle of 45.0 ? above the horizontal.If the ball lands at the same level from which it was kicked, for what amount of time was it in the air?

*February 20, 2017*

**American Government PLEASE CHECK MY ANSWER!!**

7. Which of the following six organizing principles are evident in Articles I – III of the U.S. Constitution? Select all that apply. A. Limited government.*** B. Separation of powers. C. Judicial review.*** D. Checks and balances. 8. Which of the following did the ...

*February 14, 2017*

**American Government PLEASE CHECK MY ANSWER!!**

I chose A!

*February 13, 2017*

**American Government PLEASE CHECK MY ANSWER!! **

6. The constitutional prohibition against laws respecting an establishment of religion must at least mean that, in this country, it is no part of the business of government to compose official prayers for any group of the American people to recite as part of a religious ...

*February 13, 2017*

**Math**

Four members of the Kaplan family will take a river trip down the Colorado River in Colorado State Park. The rafting company charges $10 per person for a half-day river trip, or $100 flat rate for a half-day river trip. The raft can hold up to 10 people. How much will the trip...

*February 10, 2017*

**Physics**

The initial velocity, the final velocity, and the time are given. Using one of the equations of kinematics, you can calculate the displacement directly. An airplane starts from rest and reaches a takeoff velocity of 60.0 m/s due north in 4.0 s. How far has it traveled before ...

*January 30, 2017*

**Math**

thank you Ms. Sue

*January 28, 2017*

**Math**

can you please help me work on this problem? I have a few and I want to know how to figure it out: The ratio of boys to girls in a class is 5 to 6. How many boys at in the class if there is a total of 121 students. I guessed 55 boys and 66 girls?

*January 28, 2017*

**Math**

d 3 to 5

*January 28, 2017*

**Math**

Which of the following is NOT a correct ratio for 12 stars and 15 hearts? a. 12 to 15 b. 4:5 c. 12/15 d. 3 to five

*January 28, 2017*

**Math**

Benson is 2 years less than twice Jackson age and all together equal 19

*January 3, 2017*

**math(geometric series)**

Thanks :)

*December 19, 2016*

**Math**

The salary of an employee in 1985 is $1200,in 1987 it will be $1350. Express salary as a linear function of time and estimate his salary in 1988.

*December 18, 2016*

**Math**

It is required to seat 5 men and 4 women in a row so that the women occupy the Even place. How many arrangements are possible?

*December 14, 2016*

**Math**

A family has 3 children. Their first child was a girl. What I'd the probability that the two children are of different gender?

*December 13, 2016*

**MATH**

the line 'l' has gradient 3 and cuts the x-axis at 4 then its equation?

*December 10, 2016*

**Math**

If the demand function of the monopolist is {p=200-0.5x} and its cost function is {C=100+5x+7x^2}. Value of 'x' , price and the amount of profit for which profit maximizes are:

*December 10, 2016*

**Math**

The probability that a person stopping at petrol pump will get his tyres checked is 0.12, the probability that he will get his oil checked is 0.29 and the probability that he will get both checked is 0.07. A) what is the probability that a person stopping at this pump will ...

*December 9, 2016*

**Math**

2(l+w)=44. l=2w+7 2(2w+7+w)=44 6w+14=44 w=5 l=2(5)+7 l=17

*December 7, 2016*

**Physics**

Thank you so much!

*December 7, 2016*

**Physics**

A child of mass 30 kg stands beside a circular platform of mass 95 kg and radius 2.4 m spinning at 2.3 rad/s. Treat the platform as a disk. The child steps on the rim. a) What is the new angular speed? b) She then walks to the center and stay there. What is the angular ...

*December 7, 2016*

**Physics**

Thanks Damon you're the real MVP! It was rad/s sorry.

*December 7, 2016*

**Physics**

A circular disk of mass 0.4 kg and radius 36 cm, initially not rotating, slips down a thin spindle onto a turntable (disk) of mass 1.7 kg and the same radius, rotating freely at 3.4 a) Find the new angular velocity of the combination; b) The change in the kinetic energy? c) If...

*December 7, 2016*

**math**

Thank you God bless you :)

*December 7, 2016*

**math**

an arithmetic series is such that the ninth term is zero and the sum of first 25 terms is 50.the first term of the series?

*December 7, 2016*

**math**

the 54th term and 4th term of an A.P are -61 and 64 respectively.Find the common difference and 23rd tem

*November 30, 2016*

**Physics**

A block of mass 2.5 kg hangs vertically from a frictionless pulley of mass 6.5 kg and radius 16 cm. Treat the pulley as a disk. Find: a) the acceleration of the block b) the tension in the rope I don't even know where to begin,

*November 27, 2016*

**Physics**

A torque of 50 N*m acts on a wheel of moment of inertia 25 kg*m^2 for 4 s and then is removed. b)How many revolutions does it make in 15 s if it starts at rest? I found the angular acceleration, 2 rad/s^2, but I don't know how to find the amount of revolutions.

*November 27, 2016*

**Math**

thanks for hepling God bless you

*November 21, 2016*

**Math**

If thrice of "A's" age 6 years ago be subtracted from twice his present age the result would be equal to his present age. Find "A's" present age.

*November 21, 2016*

**Math**

thank you for helping God bless you

*November 21, 2016*

**Math**

Ten years ago the age of the father was four times of his son. Ten years hence the age of the father will be twice that of his son. The present ages of father & son are?

*November 21, 2016*

**Math**

thank you for helping God bless you :)

*November 21, 2016*

**Math**

A number is as much greater than 21 and is less than 71. The number is?

*November 21, 2016*

**College Math**

Suzan sees a bag of marbles, she grabs a handful at random. She has seen a bag containing three red marbles, three green ones, four white ones, and three purple ones. She grabs seven of them. Find the probability of the following event, expressing it as a fraction in lowest ...

*November 20, 2016*

**Calculus**

The ladder would end up making a right triangle with the ground and the wall, so that makes it possible to use the sine law because you know the angle across from the ladder. 18/sin 90 = x/sin 70 x = 18*sin 90 = 16.91m

*November 19, 2016*

**Calculus**

It's cool. I figured it out on my own. But for anyone in the future who needs help with a similar question: F'(a)=f'(a^4)*4a^3 =12*4*15 =720 G'(a)=4(f(a))^3*f'(a) =4(2)^3*4 =128 You just have to replace x with a and use the chain rule. I didn't realize ...

*November 19, 2016*

**Calculus**

Let F(x)=f(x^4) and G(x)=(f(x))^4. You also know that a^3=15, f(a)=2, f?(a)=4, f?(a^4)=12. Find F?(a) and G?(a). I don't even know where to begin.

*November 19, 2016*

**math**

a company sells one of its product at Rs.12 per unit a year.its cost function is given by [c(x)=0.01x^2+8^x+7],where x represents the number of units.the number of units and the maximum profit for which profit function maximizes are:

*November 17, 2016*

**yeah solved**

Thanks :)

*November 16, 2016*

**math**

A man travels 600km partly by train and partly by car.If he covers 120km by train and rest by car ; it takes him 8 hours.But if he travels 200km by train and and by car ; he takes 20 minutes longer.Find the speed of the train and that of the car.

*November 16, 2016*

**math**

Perfect ! Thanks May God bless you :)

*November 16, 2016*

**math**

2 men and 5 boys can do a piece of work in 4 days, while 4 men and 4 boys can do it in 3 days.How long it would take one man alone to do it and how many days ity would take one boy to do it alone?

*November 16, 2016*

**math**

if the length of a rectangle is one-third the perimeter of the rectangle,then the width of the rectangle is what fraction of the perimeter?

*November 14, 2016*

**math**

5 oranges when removed from a basket containing three more than seven times as many oranges,leave how many oranges in the basket?

*November 14, 2016*

**math**

thanks

*November 14, 2016*

**math**

a computer cost $40,000 to purchase.Renting the same computer requires making $5000 , non-refundable deposits and monthly payments of $2500.After how many months will the cost to rent the computer equal the cost to purchase it?

*November 14, 2016*

**pre algebra**

The ball game took in $1,920 one Saturday. The number of $12 adult tickets was 15 more than twice the number of $5 child tickets. How many of each were sold?

*November 13, 2016*

**pre algebra**

Julie went to the post office and bought both $0.49 stamps and $0.34 postcards for her office's bills. She spent $62.60. The number of stamps was 20 more than twice the number of postcards. How many of each did she buy?

*November 13, 2016*

**statistics**

the arithematic mean of two numbers is 15 and geometric meanis 12.Find the two numbers and find harmonic mean of these numbers.

*November 10, 2016*

**statistics**

A crane is designed in such a way that it can lift a maximum load of 2750kg.Is the crane overload if the container is filled with 50 bags of cement 40kg each and 5 machine of average 100kg?

*November 10, 2016*

**statistics**

a person drove on a highway first 5km at a speed of 60km/h ,the second 5km at a speed of 85km/h , third 5km at a speed of 92km/h and last 5km of his journey,the speed was 8okm/h.Use suitable average to find average speed of the journey of 20km.

*November 10, 2016*

**Physics**

A particle of mass m1 = 2.5 kg moving along the x axis collides with a particle of mass m2 = 4.9 kg initially at rest. The incoming particle is deflected in the direction 22 degrees above the x axis, whereas the target particle moves off at 15 m/s at 37 degrees below the x ...

*November 5, 2016*

**Algebra**

Manuel plans to install a fence around the perimeter of his yard. His yard is shaped like a square and has an area of 40,000 square feet. The company that he hires charges $2.50 per foot for the fencing and $50.00 for the installation fee. Write a function, g(x), to represent ...

*October 19, 2016*

**Math**

What is the expression of Aisha has four more than three times as many candies as rachell.

*October 19, 2016*

**Health**

An individuals self-esteem stays the same throughout their life: A - true B - false ** Self-actualization means that you focus on yourself all the time A - true B - false ** Which of the following is a skill you can practice to improve your self-esteem? A - Recognize your ...

*October 3, 2016*

**Math**

Henry is 3 times as old as Jake. Three years ago, he was 4 times as old as Jake. How old is each boy now?

*September 25, 2016*

**English**

Thank you.

*September 24, 2016*

**English**

So it ended the curiosity. What does the author mean by "...that many ages has produced"?

*September 24, 2016*

**English**

A plan to trick someone?

*September 24, 2016*

**English**

I'm having trouble making out what this section means: "...and as soon as her daughter was in a condition, sent her to a monastery in France, the abbess of which had been her particular friend. And thus ended an intrigue which, considering the time it lasted, was as ...

*September 24, 2016*

**English**

OK. Thank you!

*September 20, 2016*

**English**

Is this sentence grammatically correct? "Many times, women are blinded and silenced by fear, the fear of being different and thinking differently, especially in a culture that oppresses women."

*September 20, 2016*

**stats**

The weights (in pounds) of a sample of 36 individuals were recorded and the following statistics were calculated. mean = 160 range = 60 mode = 165 variance = 324 median = 170 The coefficient of variation equals: a.0.1125% b.11.25% c.203.12% d.0.20312% Do I have to find the ...

*September 15, 2016*

**stats**

I'm not allowed to use the chart. I have to calculate it by hand

*September 15, 2016*

**stats**

The mean of Exam 1 is 80%. The variance is 25. How many students of my IS310 class of 200 students have scores between 70% and 90%, assuming that the distribution is bell-shaped? a.180 b.185 c.190 d.195 I'm not sure how to set up this problem.

*September 15, 2016*

**stats**

The answer is 2.6 but I'm not sure how to get that

*September 15, 2016*

**stats**

I added his points: 2+4+1+3+4=14 and divided it by 5 to get 2.8 but that's the wrong answer.

*September 15, 2016*

**stats**

Jason, a freshman at a local college, just completed 15 credit hours. His grade report is presented below. Course: Calculus, Biology, English, Music, P.E. Credit Hours 5, 4, 3, 2, 1 Grades C, A, D, B, A The local university uses a 4 point grading system, i.e., A = 4, B = 3, C...

*September 15, 2016*

**Math**

you are right, I have the variables but I don't know how to simply the expression with all the negatives and positives. This is just an example of what I'm working on: (-2) - -5 + -6. If you can explain that part, I'm sure I can apply it to the rest of my homework.

*September 14, 2016*

**Math**

If a= -2, b= -5 and c= -6 than a - b + c = I don't know how to complete this problem?

*September 14, 2016*

**earth and science**

what continent lies between 20 and 60 degress north lattitude and between 160 and 50 degrees west longtitude

*September 14, 2016*

**Math**

How many times greater is the value of the 2 in the thousands place than the 2 in the tens place in the number 742,025?

*August 29, 2016*

**math**

Determine the rate percent per annum if Rs6250 amounts to Rs6760 in six months interest being compounded quarterly.

*August 13, 2016*

**I need help - precalc**

List all points on the graph of y=tanx on the interval [π/2,3π] that have a y-coordinate of -1/radical3 (Direction- Type ordered pair)

*August 4, 2016*

**Maths**

James decided to paint his bedroom. His bedroom walls are 5 metres long and 3 metres high. If 6 litres of paint can cover 10 square metres of the wall, how much paint should James buy to paint all the walls of his bedroom. If paint costs $12.00 per litre, how much will James ...

*July 27, 2016*

**maths**

Im very confused could you please give me the break down/formula of how you have got this answer.

*July 27, 2016*

**maths**

james decided to paint his bedroom.his bedroom wall are 5 metres long and 3 metres high.if 6 metres of paint can cover 10 square metres of the wall,how much paint should james buy to paint all the walls of his bedroom.

*July 27, 2016*

**math**

20% of 200 is what number? 5% of what number is 8.5? What percent of 400 is 60?

*May 25, 2016*

**Percent of loss**

Find the loss if necessary round to the nearest cent. Cost $ 523.20 percent of loss 19.2%

*May 17, 2016*

**Percent**

Price with tip is $46 Percent tip : 15% Total bill before tip?

*May 15, 2016*

**Algebra**

Chantel drew a picture of her dog on a piece of paper that is 12 centimeters long. She used a copy machine to enlarge her drawing. She used the 115% setting to make each new copy. She then used each new copy, using the same copier setting. Enter an explicit and recursive ...

*April 27, 2016*

**Algebra**

If sin A=-7/25 and angle A terminates in Quadrant IV, cos A equals.. A. -24/25 B. -7/24 C. 24/25 D. 7/24 PLEASE HELP

*April 27, 2016*

**algebra**

a steamboat travels 9 km faster than a freighter. The steamboat travels 147 km/in the same time the freighter travels 120 km/ find the speed of each boat?

*April 26, 2016*

**Geometry-7**

Suppose that you know that <T and <S are supplementary and that <T=3(m<s). How can you find m<T.

*April 25, 2016*

**Geometry**

Suppose that you know that <T and <S are supplementary and that <T=3(m<s). How can you find m<T?

*April 25, 2016*

**Calculus**

What did I do wrong? An object is formed so that its base is the quarter circle y = sqrt(64 − x^2) in the first quadrant, and its cross sections along the x-axis are squares. What is the volume of the object? (Assume the axes are measured in centimeters.) I have already ...

*April 21, 2016*

**Math**

Which is considered an outlier? x:1,2,3,4,5,6,7,8,9 y:0.8,2.1,3.1,3.8,5.2,8.4,6.9,8.1,9 (2,2.1) (4, 3.8) (6, 8.4) (9.9) Can someone help, I think it's C or D?

*April 21, 2016*

**Integers**

The sum of 6 consecutive integers is 171. Find the smallest of the integers

*April 12, 2016*

**Algebra**

THANK YOU SO MUCH

*April 8, 2016*

**Algebra**

Thanks

*April 8, 2016*

**Algebra**

So far I got x+yi-2+3i=-6+4i x+yi+3i=-6+2+4i x+yi+3i=-4+4i x+yi=-4+i

*April 8, 2016*

**Algebra**

Let x and y be real numbers. If (x+yi)-(2-3i)=-6+4i, what are the values of x and y?

*April 8, 2016*

**English**

Chose the answer that identifies the three cases of pronouns. nominative, possessive, objective <~ my choice objective, indefinite, demonstrative objective, possessive, prepositional <~ i also feel like its this one too nominative, passive, objective

*March 30, 2016*

**Science**

How to work out the weight on mercury Jupiter and Saturn

*March 29, 2016*

**Chemistry PLS HELP!!!**

A student collects oxygen gas by water displacement at a temperature of 17 Celsius. A barometer reads 92.3 kPa. What is the pressure of the water vapor? Look it up on a water vapor pressure chart. What is the pressure of the oxygen gas? (Answer: ~14.0 mmHg for water, 678.3 ...

*March 28, 2016*

**Science**

Sammy and Andy wanted to measure their classroom. Would this work? Why or why not

*March 16, 2016*

**Math**

An observer at point 0 sees airplane P directly over airport a. The observer measures the angle of the plane at 40.5. Find m<P

*March 6, 2016*