Wednesday

September 28, 2016
Total # Posts: 1,289

**math **

a car traveling 64 miles per hour passes a bus traveling 53 mph in the same direction on the highway, if they maintain their speeds, how long will it take them to be 17.5 miles apart

*September 22, 2016*

**Math**

The sides of a triangle is 6,8,15 cm long. in a similar triangle, the longest side is 21 cm long find the two sides.

*September 22, 2016*

**Math**

The volume of a certain quantity of gas is inversely proportional to its pressure. If its pressure is 1000 grams per square cm, when its volume is 3m³, what will the pressure be when the gas is compressed to a volume of 2m³? (Thanks in advance in helping me here)

*September 22, 2016*

**Algebra **

A flight from a to B is against the wind and takes five hours return flight with wind takes 4.5 hours of the wind speed is 50 mph find the speed of the plane in still air

*September 20, 2016*

**Statistics**

I kept getting the question wrong because I assumed they were being replaced. Thank you!

*September 4, 2016*

**Statistics**

In a group of 54 candidates, 16 are female and the remaining are male. If four are to be randomly selected, what is the probability that there will be only female candidates selected?

*September 4, 2016*

**Math**

I think I figured out the second answer.... 1/12 ??

*September 4, 2016*

**Math**

In a group of 54 candidates, 16 are female and the remaining are male. If four are to be randomly selected, what is the probability that there will be only female candidates selected? 17 coins and 1 six-sided number cube are tossed together. What is the probability of getting ...

*September 4, 2016*

**Math**

Since the platforms are both of the same height, the velocities will be exactly the same, albeit in a negative direction. Therefore, your answer is -19.8mls.

*September 4, 2016*

**Math**

Kevin has an equal number of quarters nickels and dimes in his piggy bank, he randomly picks a coin replaces it and picks another coin. What is the probability that the sum of the two coins picked is at least thirty cents

*August 29, 2016*

**Algebra**

Find the equation for the circle with center (1,2) and passing through (-4,-3). Write the equation for the circle.

*August 26, 2016*

**Trig**

if sin(x)=-0.5 and x is in the third quadrant, find x

*August 20, 2016*

**spanish**

Complete the sentence with the correct form of the verb in parentheses. ¿Qu¨¦ ___ (hacer) Uds. despu¨¦s del trabajo hoy?

*August 17, 2016*

**math**

A isosceles right triangle has leg of 15. What is its area

*July 14, 2016*

**St.vincent**

The sum of my tens and hundreds digit is greater than 7 and a multiple of 4. My tens digit is 3 less than my one's digit.what is my number?

*June 28, 2016*

**St.Vincent math**

What is the largest number that you can form with the first five- digit odd number?

*June 28, 2016*

**Chemistry**

will red blood cells undergo hemolysis, crenation or no change at all. 10%m/v NaCl 2% m/v glucose H2O 5% m/v glucose how would I come up with the answer I read the chapter and i'm confused

*June 21, 2016*

**Math**

The measure of one angle is 38 degrees less than the measure of its supplement. What is the measure of each angle?

*June 12, 2016*

**mat**

Three times a number plus 4 equals 15 times the reciprocal of the number. Determine the number.

*June 7, 2016*

**Algebra**

Miachel wants to double the area of his garden show below by increasing the length and width by the same amount. what will be the dimensions of his garden then? use a representation and equation to solve

*May 30, 2016*

**geometry**

The two-way table shows the number of hours of sleep each of 120 student volunteers reported and their exam results. a) Find P(passing test given <6 hours sleep)

*May 28, 2016*

**Math**

If a room is 12ft by 16ft how many 12 inch by 12 inch tiles do I need to cover it

*May 16, 2016*

**physics**

a certain string vibrates in its fundamental frequency at 250 Hz. If the string is 15 cm long, what is the velocity of the wave in the string? What is the wavelength of the second harmonic frequency (the second wave which will fit into this length of string)?

*May 14, 2016*

**Math**

Carlos and Krystal are taking a road trip from Greenville to North Valley.Each has their own map,and the scales on their maps are different. A. On Carlos's map,Greenville and North Valley are 4.5 inches apart. The scale on his map is 1 inch = 20 miles. How far is ...

*April 19, 2016*

**Math**

I'm horrible at word problems but Create a chart that has the following information for each of the three selected carriers: cost per month, base number of minutes, additional cost per minute (overage) Using the information from the chart you created, write the total ...

*April 16, 2016*

**math**

Rewrite this formula using rational exponents. t = 2 pi sqrt 4/32 Thanks!!!

*April 14, 2016*

**Math**

I have a 24 gallon hot tub im filling it 5/8 with water how many gallons of water will be in hot tub??

*April 12, 2016*

**Math**

A scale drawing of the floor of a theater has a scale factor of 18. Mark says that he can use this information and any length on the scale drawing to find the corresponding length in the actual theater. He says that he can also use this information and any length in the actual...

*April 9, 2016*

**Science**

What is the mass of a box pushed both left and right at 50N?

*March 30, 2016*

**english**

tool burth book help

*March 30, 2016*

**Finance**

Universal Laser, Inc., just paid a dividend of $3.30 on its stock. The growth rate in dividends is expected to be a constant 6 percent per year, indefinitely. Investors require a return of 15 percent on the stock for the first three years, a rate of return of 13 percent for ...

*March 28, 2016*

**Math**

Cynthia is hanging a picture on the wall. The picture is 30 inches wide and 34 inches high and will be hung on a wall that is 10 feet high. The center of the picture must be 6 1/3 feet from the floor. Determine the distance from the ceiling to the top of the picture frame. ...

*March 27, 2016*

**math**

Make a proportion out of it and cross multiply. so, 5/200=7/×. Cross multiply, you get 5x=1400, ×=280.

*March 13, 2016*

**Chemistry**

What is the mass needed to make 8.5L of a 4.0 M solutution of Na2SO4? (Na=23, s=32, O=16)

*March 13, 2016*

**Chemistry**

What chemical occurs to the red cabbage red for acids and blue for bases.

*March 9, 2016*

**spanish**

Ahora yo en Panamá.

*February 29, 2016*

**algebra word problem**

elsie, after spending one fifth of her allowance for candy and one half of what was left over for flowers had 72 cents remaining. How manu cente did she have at first? This needs to be one variable answer.

*February 24, 2016*

**math**

elsie, after spending one fifth of her allowance for candy and one half of what was left over for flowers had 72 cents remaining. How manu cente did she have at first?

*February 24, 2016*

**math**

two years ago a woman was 4 times as old as her daughter. three years from now the mother will be only threw times as old as her daughter. How old are each of them now?

*February 24, 2016*

**math**

a farmer sold 425 bushels of wheat and oats for $481.58. How many bushels of each did he sell, if he received $2.08 a bushel for the wheat and $.94 a bushel for the oats?

*February 24, 2016*

**math**

sum of two numbers is 40. the difference of 5 times the larger and 4 times the smaller exceeds 7 times the smaller by 8. Find the numbers

*February 24, 2016*

**Math**

John thanks for helping. Just to make sure, is the store's profit $53.27

*February 24, 2016*

**Math**

I need help please. The usual markup on shoes at Fast Times Department Store is 240%. During a 25%-off sale, the store sold a pair of shoes for $39.95. Estimate the amount of the store's profit on the shoes.

*February 24, 2016*

**Math**

Jason and Mary are married taxpayers in 2015. They are both under 65. For the tax year, they have a total of $41,000 in wages and $500 in interest income. Their deductions for adjusted gross income is $5,000 and their itemized deductions equal $7,950. They claim two exemptions...

*February 20, 2016*

**i need help with science pls**

Which of the following types of stars started out on the main sequence with the largest initial mass? In Graph A, the curve peaks at 800 nm, in the red section of the visible light spectrum. In Graph B, the curve peaks at 550 nm, in the green section of the visible light ...

*February 10, 2016*

**Math pls help me pls pls**

If the outliers are not included, what is the mean of the data set? 72, 82, 3, 55, 62, 73, 90, 80, 151, 59, 46, 31 59 65 67 73 is it b

*February 10, 2016*

**calculus**

The table below gives selected values for the function f(x). Use a trapezoidal estimation, with 6 trapezoids to approximate the value of . x 1 1.1 1.2 1.5 1.7 1.9 2.0 f(x) 1 3 4 6 7 8 10

*February 9, 2016*

**math**

If $60 is put in an account that gets 7% per year, and I add $15 at the end of each year, how much will I have at the end of 8 years?

*February 7, 2016*

**English**

To my Grade 11 students especially Fahad. I know you are looking at this page. To you other dumbass students who actually use this page...you probably waste more time reading this page than actually studying the meaning of Onomatopoeia.

*January 29, 2016*

**Math**

I am trying to help my child with this problem and I have no idea what to do to solve this word problem. Paul used 1 1/4 gallons of paint to cover 3/8 of the walls in his living room. How many gallons of paint will Paul need to paint all the walls in his living room?

*January 15, 2016*

**calculus**

Determine if the Mean Value Theorem for Integrals applies to the function f(x) = x^3 − 9x on the interval [−1, 1]. If so, find the x-coordinates of the point(s) guaranteed to exist by the theorem. Not quite sure how to do this one at all to be completely honest. ...

*January 1, 2016*

**Physic**

Obtaining an algebraic Equation for T (0.300)(4190J/(kg*K)(T-70.0*C) + (0.100)(390J)/(kg*K)(T-20.0*C) I don't know how to use the Algebraic Equation on that?

*December 20, 2015*

**calculus**

Let Y = 7x sin-1(2x)+^3 square root 1+4x2. Find Y'. I don't know how to do the square root part. I have done y'= (7x)' (Sin^-1(2x)) + (7x)(sin^-1)'+...... y'= 7 sin^-1 + (7x)sq(2x)'/square root (1-(2x))^2 + .....

*December 13, 2015*

**calculus**

Anti-Derivatives 2x^6-x^3/x^2

*December 11, 2015*

**Chemistry**

A 100.0-mL sample of air is collected at 21 degrees Celsius and 772 mm Hg. What is the volume of air at STP? I know that I have to change deg. Celsius to K and mm Hg to atm. I'm stuck on what formula I should use... Should I use PV=nRT?

*December 10, 2015*

**Physics**

A ball projected with an initial velocity u at an angle tita to the horizontal cover a horizontal range of 26m after 5sec. Cal. The value of u and tita? g=10ms-1

*November 4, 2015*

**Physics**

I'd say your right. lol

*October 29, 2015*

**math**

Danika has yellow 10 buttons.She has 6 times as many black buttons. How many buttons does she have?

*October 27, 2015*

**math**

larry has a board that is 4 yards long. How much needs to be sawn off to make the board 2 feet 8 inches long? A) 1 ft 4 in B)8 ft 6 in C) 2 ft 6 in D/9ft 4 in

*October 27, 2015*

**ELA HELP FAST**

thank you

*October 18, 2015*

**ELA HELP FAST**

I need help researching to find information about the questions

*October 18, 2015*

**ELA HELP FAST**

Why is baseball in all its forms – from T-ball to the major leagues – important to Americans of all ages? What traditions have grown around baseball, and how do they affect the people who play and love the game? How can knowing about the game of baseball, its history...

*October 18, 2015*

**Pre-Calculus**

Got it. Thanks Reiny. It's 75/sin.667 .40x60=.667 And that comes out to the 6445.5 I was looking for

*October 15, 2015*

**Pre-Calculus**

And therein lies the problem, the book says it's 6445.5 ft. or 1.2 miles... Oh dear, it's 40' not 40*

*October 15, 2015*

**Pre-Calculus**

The angle of depression from the top of a 75 ft. lighthouse to a ship out in the ocean is 40*. How far out is the ship from the lighthouse? I've been stuck on this problem for an hour, I know the answer but don't know how to set it up/enter it in a calculator.

*October 15, 2015*

**Physics**

Resolve a force of 23 N at 180 degrees and a force of 47 N at 270 degrees.

*October 14, 2015*

**Math**

Thank you

*October 12, 2015*

**Math **

Simplify the expression 9 + 10h + -5h = 0 Please show steps

*October 12, 2015*

**math**

a sum of money is shared between to persons at the ratio 2:5 one person received $60 how much was shared

*October 5, 2015*

**physics**

An extreme skier slides down an incline that forms an angle 24 degrees above the horizontal. The skier starts from rest and accelerates firmly at 4.00m/s^2 for a distance of 50.0m to the edge of a cliff. The cliff is 30.0m above the powdery snow below. Find how far from the ...

*September 30, 2015*

**Fire protection eng**

17 hours

*September 29, 2015*

**Math **

-1.4m = 2.1

*September 28, 2015*

**Physics**

consider two solid cones made from a uniform material. The smaller cone is a ½ scale model of the bigger one. They are released from equal height, quickly reach their terminal velocities and fall in air until they hit the ground. Use scaling reasoning to predict which ...

*September 23, 2015*

**Physics(which cone will land first)**

consider two solid cones made from a uniform material. The smaller cone is a ½ scale model of the bigger one. They are released from equal height, quickly reach their terminal velocities and fall in air until they hit the ground. Use scaling reasoning to predict which ...

*September 23, 2015*

**Physics**

So what are you asking?

*September 23, 2015*

**maths**

What is the simplest form of 0.8

*September 23, 2015*

**Physics(volume flow rate)**

Imagine a house with two bathrooms/showers: one downstairs, the other upstairs. The volume flow rate of the shower head downstairs (2 meters above the ground level) is 4*10-4 m3/s. The cross sectional area of the shower head is 30 mm2. What is the volume flow rate of an ...

*September 22, 2015*

**Physics (density)**

A steel drum (barrel) has a volume of 200 Liters and a mass of 16 kg. It is filled to the top with an unknown liquid, sealed and thrown into water. It is floating with 50% of its volume underwater. What is the density of the liquid inside the drum? Assume the walls of the drum...

*September 22, 2015*

**Physics (cone in water) buoyancy **

h ttps ://s.yimg . com /hd/ answers /i /23e5f0847 ba74d75b223556433442f6f_A.jpeg?a=answers&mr= 0&x=1442542068&s =0f4a516a 3f24689d44f 28091e846bb0d link to see part a answer and an image of what is problem is. A cone of density p_0 (rho) and total height l floats in a liquid ...

*September 17, 2015*

**Social Studies**

YOU STUPID LMAO

*September 15, 2015*

**Alegbra**

10,28

*September 10, 2015*

**Physics Using hydrostatic equilbrium)**

3. A model of Earth’s interior: Look up the radius and mass of the Earth. Radius is 6,371 km Mass is 5.974 x 10^24 kg Calculate its average density. p_e = (5.974 x 10^24 kg)/ (4/3)pi r^3 = (5.974 x 10^24 kg)/ (4/3)pi (6371)^3 = 5.54 g/cm^3 Using this Imagine a planet of ...

*September 10, 2015*

**Physics (deriving Keplers 3rd law)**

How do I derive a straightforward form of Kepler's 3rd Law if I start with Newtons's Law of Gravitation. (the opposite of what Newton did)

*September 10, 2015*

**Physics ( using earth to find pressure of planet y**

good luck

*September 10, 2015*

**English**

Please, explain me what does it mean about this quote. “Our deepest fear is not that we are inadequate. Our deepest fear is that we are powerful beyond measure. It is our light, not our darkness that most frightens us. We ask ourselves, Who am I to be brilliant, gorgeous...

*September 9, 2015*

**Chemistry**

Given the following values of ΔH, ΔS and T, calculate ΔG (in kJ). The values are: ΔH = -17.0 kJ, ΔS = -50.0 J/K, and temperature = 10.0 C.

*September 3, 2015*

**Chemistry**

f the ΔH of fusion for aluminum is 10.9 kJ/mol and the ΔH of vaporization is 284 kJ/mol, then what is the change in entropy upon melting down an aluminum can that weighs 18.9 grams?

*September 3, 2015*

**Math**

Create a table for each set of values. Test each table for equivalent ratios to find which set of values describes the proportional relationship of the two quantities. 66 ounces of peanuts to 89.1 ounces of walnuts

*September 2, 2015*

**physics14**

a non uniform bar which is 3m long weighs 60n. if the center of gravity is 1.1m from the larger end. and if the bar is supported at the midpoint, what load must be suspended at the smaller end to maintain equilibrium?

*August 31, 2015*

**Physics**

a 75 w compact fluorescent bulb operating at 30% efficiency. Calculate the amount of energy lost to heat and the amount of energy converted into light after the bulb has been on for 2.0h.

*August 29, 2015*

**math**

lola is placing appetizers on plates. she has 63 spring rolls and 84 cheese cubes. she wants to include both appetizers on each plate. each plate must have the same numbers of spring rolls and cheese cubes. what is the greatest number of plates she can make using all of the ...

*August 27, 2015*

**math**

Find the domain of f(x)=5x-1/x^2+8x+15?

*August 19, 2015*

**Scrambled Paragraph**

No it s r u t q

*August 4, 2015*

**Math**

I pretty sure it 31

*August 4, 2015*

**SCTD**

Physics a satellite orbiting 3.22 times 10 to the 5th power meters above the surface of the earth get the mass of the satellite is 3.80 times 10 to the 4th kilograms what is the weight or gravitational force exerted on the satellite by the earth?

*July 7, 2015*

**Math**

How many four digit numbers use the digit 7 two or more times?

*June 14, 2015*

**chemistry**

A 2.500×10−2M solution of NaCl in water is at 20.0∘C. The sample was created by dissolving a sample of NaCl in water and then bringing the volume up to 1.000 L. It was determined that the volume of water needed to do this was 999.3mL . The density of water at...

*May 24, 2015*

**chemistry**

A 2.500×10−2M solution of NaCl in water is at 20.0∘C. The sample was created by dissolving a sample of NaCl in water and then bringing the volume up to 1.000 L. It was determined that the volume of water needed to do this was 999.3mL . The density of water at...

*May 24, 2015*

**Calc**

A ball is thrown straight up from the top of a 200 foot building with an initial velocity of 40feet/second. acceleration due to gravity is -32feet/second. a) find a formula for the height of the ball at time t. b) how high does the ball rise before it begins to fall c) when ...

*May 5, 2015*

**Calculus**

Give a Right-hand sum approximation of integral 1 to 4 of x^2 with n=4? I have done this problem alot and my teacher says the answer is 30 but I cant get it. HELP

*April 19, 2015*