Saturday

February 25, 2017
Total # Posts: 1,627

**Physics**

Several volcanoes have been observed erupting on the surface of one of Jupiter's closest moons. Suppose that material ejected from one of these volcanoes reaches a height of 4.96 km after being projected straight upward with an initial speed of 132 m/s. Given that the ...

*April 28, 2012*

**math**

There are two answers to chose from: A: 16.95 B: 79.05 Which is horizontal?

*April 26, 2012*

**math**

Landon is standing in a hole that is 6.7 ft deep. He throws a rock and it goes up into the air, out of the hole, and then lands on the ground above. the path of the rock can be modeled by the equation y= -0.005x^2 + 0.48x - 6.7, where x is the horizontal distance of the rock, ...

*April 26, 2012*

**math - Help**

The value of a $20,000 car decreases every year, t. The equation below model this situation. 20,000(1-0.04t) = 13,000 How many years will the car be worth $13,000? Round to the nearest tenth if necessary. I got 20,000(.96t)= 13,000, but I don't believe gives me the correct...

*April 23, 2012*

**math - Additional Info**

The value of a $20,000 car decreases every, t. The equation below model this situation. 20,000(1-0.04t) = 13,000 How many years will the car be worth $13,000? Round to the nearest tenth if necessary. I got 20,000(.96t)= 13,000, but I don't believe gives me the correct ...

*April 22, 2012*

**math**

You have 6 cups of sugar. It takes 1 cup of sugar to make 24 cookies. The function c(s) = 24s represents the number of cookies, c, that can be made with s cups of sugar. What domain and range is reasonable for the function?

*April 21, 2012*

**math**

I understand most of the explanation except the part below: n log .96 = log .65 n = -.187/-.0177 Could you please explain? Thanks

*April 21, 2012*

**math**

The value of a $20,000 car decreases every, t. The equation below model this situation. 20,000(1-0.04t) = 13,000 How many years will the car be worth $13,000? Round to the nearest tenth if necessary. I got 20,000(.96t)= 13,000, but I don't believe gives me the correct ...

*April 21, 2012*

**math**

You are planting a rectangular garden. It is 5 ft longer than 3 times its width. The area of the garden is 250 ft^2. Find the dimensions of the garden. I set it up like this: 3x +5 = 250 where x=8l.7. Is this correct so far, if so what do I do next? Thanks

*April 21, 2012*

**math**

The length of an open-top box is 4 cm longer than its width. The box was made from a 480-cm^2 rectangular sheet of material with 6cm by 6cm squares cut from each corner. The height of the box is 6cm. Find the dimensions of the box. Please show me in detail how to set this up ...

*April 21, 2012*

**Geometry**

What is the volume of a horizontal cylinder whose radius is 2.6 yd,and length is 8.4 yds to the nearest tenth of a cubic yard using 3.14?

*April 20, 2012*

**math**

Answer by factoring a quadratic equation. The length of an open-top box is 4 cm longer than its width. The box was made from a 480-cm^2 rectangular sheet of material with 6cm by 6cm squares cut from each corner. The height of the box is 6cm. Find the dimensions of the box. ...

*April 18, 2012*

**Math - 2nd try**

Please show me how to set up and solve: You have 6 cups of sugar. It takes 1 cup of sugar to make 24 cookies. The function c(s) = 24s represents the number of cookies, c, that can be made with s cups of sugar. What domain and range is reasonable for the function? math - ...

*April 18, 2012*

**math**

The value of a $20,000 car decreases every year, t. the equation below models this sitution: 20000(1 - 0.04t) = 13,000. Please explain how to work this problem.

*April 18, 2012*

**math**

What domain and range is reasonable for this function?

*April 18, 2012*

**Geometry**

How do I find the perimeter of the rectangle (l=10.6in and h=6.1 in

*April 16, 2012*

**Math**

Solve for x in the following proportion x/60= 9/5

*April 15, 2012*

**Math**

1/14 + 3/16 + 4/14

*April 14, 2012*

**Math**

If you are in a hot-air balloon at a height of 100 meters, you can expect to see ____ km. Round your answer to the nearest kilometer and enter only the number.

*April 13, 2012*

**math**

You have 6 cups of sugar. It takes 1 cup of sugar to make 24 cookies. The function c(s) = 24s represents the number of cookies, c, that can be made with s cups of sugar. What domain and range are reasonable for the function? (I know that you get 144 cookies from 6 cups of ...

*April 13, 2012*

**math**

What is the solution to the proportion shown below? (x+3)/4 = (x+2)/3

*April 12, 2012*

**math**

What is the solution to the proportion shown below? (x+3)/4 = (x+2)/3

*April 12, 2012*

**Math**

You have 6 cups of sugar. It takes 1 cup of sugar to make 24 cookies. The function c(s) = 24s represents the number of cookies, c, that can be made with s cups of sugar. What domain and range are reasonable for the function? (I know that you get 144 cookies from 6 cups of ...

*April 12, 2012*

**Math**

What is the solution to the proportion shown below? (x+3)/4 = (x+2)/3

*April 12, 2012*

**math**

You have 6 cups of sugar. It takes 1 cup of sugar to make 24 cookies. The function c(s) = 24s represents the number of cookies, c, that can be made with s cups of sugar. What domain and range are reasonable for the function? (I know that you get 144 cookies from 6 cups of ...

*April 12, 2012*

**math**

Which value below is a possible solution to the compound inequality 0<3x<30? A. 5 B. 3.2 C. 45 D. -17 If you are substituting these number for x, then C and D do not apply; however, A and B both work. Is this how I should be doing it?

*April 12, 2012*

**math**

Thank you for being so detailed. It helped to understand how to solve the problem.

*April 12, 2012*

**math**

What equation do you get when you solve v-m = v+nx for x How did you work this problem?

*April 12, 2012*

**math**

These are my choices of answers: A. c = (wz)/(m+y) B. C = (Wz+Y)/m C. C = wz-m-y D. c = wz+y+m This is where I get confused. Do I bring the wz and put on the top of m+y? Please explain. Thank you so much.

*April 11, 2012*

**math**

Show the formula correctly being solved for the variable c. W = (c + m +y)/z

*April 11, 2012*

**math**

Please solve and explain how to solve the compound inequality: 4 < 4a +3 < 18

*April 11, 2012*

**math**

Thank you so much for explaining it in detail. I really appreciate it.

*April 11, 2012*

**math**

Reiny, I'm not sure how to do that.

*April 11, 2012*

**math**

Which of the following equations represents the equation for the line that is parallel to the given line and passes through the given point? y= 1/5 x - 10; (15, -16) A. y = -5x +19 B. y = 1/5x + 91/5 C. y = 1/5 x - 19 D. y = 5x - 19 I do know that to be parallel the slopes ...

*April 11, 2012*

**Algebra I**

Please show me how to solve: The value of a $20,000 car decreases every year, t. The equation below models this situation: 20000(1-0.04t)=13,000. After how many years will the car be worth $13,000. Round to the nearest tenth if necessary.

*April 11, 2012*

**math**

well this is no help at all so take this website down now

*April 11, 2012*

**geometry**

Find the geometric mean each pair of numbers. If nessary, give the answer in simplest radical form. 5 and 8

*April 9, 2012*

**math**

Thanks, Steve. You are always so helpful.

*April 5, 2012*

**math**

Which of the following below shows the expression below in simplest form? 2y^2 - 50/y - 5 Is it "C" A. 2(y-5) B. 2(x +50) C. 2(y+5) D. 2(y^2 +5)

*April 5, 2012*

**Finance**

Rent was $350 for 17 years. Based on 4% inflation, how much would the rent be at year 17?

*April 3, 2012*

**English**

it must be "D."

*March 30, 2012*

**English**

In which sentence is ceased used inappropriately and why: A. After the rain ceased, the sun came out. B. When the teacher told us to be quiet, we ceased talking. C. When we were full, we ceased eating. D. When it got cold, we ceased wearing our jackets. Is it "A?" If...

*March 30, 2012*

**Chemistry**

How much energy is needed to convert 90g of water (ice) at -85 degrees C to water (liquid) at 48 degree C?

*March 28, 2012*

**Stats**

In the library on a university campus, there is a sign in the elevator that indicates a limit of 16 persons. Further more, there is a weight limit of 2500 pounds. Assume the average weight of students, faculty and staff on campus is 150 pounds, the standard devaiton is 27 ...

*March 26, 2012*

**chemistry**

Yes the AAS is atomic absorption spectrophotometry. Also thank you for your explanation.

*March 26, 2012*

**chemistry**

Student A ran all her standards through the AAS at a specified C2H2/air flow rate. Just before she was to run her Cu sample, Student B turned down the flow rae of C2H2, thus lowering the flame temperature. Would students' A results of Cu in their sample be high, low or ...

*March 26, 2012*

**biology**

please help

*March 25, 2012*

**biology**

a class of pupils obtained results on a bar chart during a seashore investigation. they sampled the numbers of different seaweeds found in 0.25 m2 from the top shore (upper shore) to lower shore and found average percentage cover for each seaweed. describe how the pupils would...

*March 25, 2012*

**math**

Simplify the radical expression by rationalizing the denominator: 2(square root)108 / (square root) 180y Please show me how to set up and how to solve

*March 21, 2012*

**math**

Simplify th radical expression by rationalizing the denominator: 2(square root)108 / (square root) 180y Please show me how to set up and how to solve.

*March 21, 2012*

**math**

I loved the way you broke it down and explained it to me in detail. What a great help!

*March 21, 2012*

**math**

Please explain how to set this up and how to solve: A school's rectangular athletic fields currently have a length of 125 yd and a width of 75 yd. the school plans to expand both the length and the width of the fields by x yards. What polynomial is standard form represents...

*March 21, 2012*

**american history**

Sir George Grenville, King George's Chancellor of the Exchequer, enacted the Revenue Act of 1764 to raise revenue for maintenance of the British Army in America. In the colonies, it was commonly known as the _______ Act. A. Stamp B. Tea C. Sugar D. Quartering

*March 19, 2012*

**Math**

Mrs. Doris' kindergarten class is making Valentines day cards for the parents of the children. The class will be using three colors of construction paper: Pink, Red, and Purple. Mrs. Doris needs to find out the cost of the project so she can shop for the supplies duirng ...

*March 17, 2012*

**physics**

You have a 15.0 kg block of wood and you drop it from rest at a great height. It reaches terminal velocity of 31.3 m/s. If this is low-speed drag, what is the value of the constant b? If this is a high-speed drag, what is the value of the constant c?

*March 17, 2012*

**statistics**

it has been reported that 40% of all internet users have been attacked by viruses. If 20 people are randomly surveyed, find the following probabilities: a. At least 3 have been attacked b. No more than 5 have been attacked c. less than 15 have been attacked

*March 16, 2012*

**CLC**

On a wet racetrack, the maximum safe speed, to avoid sliding on a level circular curve with a radius of curvature of 56 m, is 73 km/hr. What is the coefficient of friction between the car's tires and the track surface?

*March 15, 2012*

**math**

given the function F(x)=7x+8. find each of the following f(10)= f(-6)= f(0)= please explain

*March 6, 2012*

**physics**

If it is 3m from the light source I think it will illuminate 9m^2. I know if it is 5m from the source it illuminates 25m^2 and also if it is 10m from the source it illuminates 100m^2 so it makes sense that 3m would illuminate 9m^2.

*March 6, 2012*

**algebra**

-7/3x+2/3=-11

*March 6, 2012*

**Math**

Suppose that the amount of algae is a pond doubles every 3 hours. If the pond initially contains 70 pounds of algae, how much algae will be in the pond after 9 hours? Is the answer 560? I was not sure how to set it up, but doubled it every 3 hours. If this is not correct, ...

*March 6, 2012*

**Psychology**

According to Howard independent intelligence:

*March 5, 2012*

**math**

Joe plants a rectangular garden in the corner of his field. the area of the garden is 60% of the area of the field. what is the longest side length of Joe's field, in feet. Garden: 16ft x 12ft, Field: 2x ft by 2x ft.

*March 5, 2012*

**mathq**

300 yards. I had on the numbers, but did not know to add them. Thanks, again.

*March 5, 2012*

**mathq**

Please show me how to work this. A park has two walking paths shaped like right triangles. The first path has legs 75 yd and 100 yd long. the second path has legs 50 yd and 240 yd long. What is the total length of the shorter path, in yards?

*March 5, 2012*

**Math**

Thank you so much. You guys have been a lot of help to me in the past. I will study it more.

*March 5, 2012*

**Math**

Thank you, but this did not help me.

*March 5, 2012*

**Math**

Please explain how this is set up and how to work it. thanks A rectangular box is 4cm wide, 4cm tall, and 10cm long. What is the diameter of the smallest circular opening through which the box will fit? Round to the nearest tenth of a centimeter.

*March 5, 2012*

**Psychology**

The disavantages of group intelligence tests include that.

*March 2, 2012*

**math**

Vocabulary: What are the parts that make up a polynomial?

*March 1, 2012*

**math**

In ax(squared) + bx +c, if ac is negative and b is positive, what do you know about the factors of ac?

*March 1, 2012*

**math**

Describe how to find linear expressions for the possible dimensions of a rectangular prism with a volume of 8k(cubed) + 26K(squared) +6K.

*March 1, 2012*

**math**

Describe how to find linear expressions for the possible dimensions of a rectangular prism with a volume of 8k(cubed) + 26K(squared) +6K.

*March 1, 2012*

**math**

In ax(squared) + bx +c, if ac is negative and b is positive, what do you know about the factors of ac?

*March 1, 2012*

**math**

A rectangular prism has a volume of 4x(cubed) + 30 x(squared) +36x. What linear expressions can represent possible dimensions of the prism? Please explain.

*March 1, 2012*

**Math**

Steve, thank you so much. You are always so helpful.

*February 28, 2012*

**Math**

Simplify the radical expression by rationalizing the denominator. 8(radicand)48/(radicand) 112x Please explain how to work this.

*February 28, 2012*

**math**

How do I set this up and solve? You are planning a rectangular patio with length that is 7 ft less than 3 times its width. The area of the patio is 120 ft squared. What are the dimensions of the patio?

*February 27, 2012*

**Math -Probab.**

In a standard deck of 52 playing cards there are 13 hearts. If 3 cards are drawn from the deck ( WITHOUT REPLACEMENT, what is the probab. that all 3 cards will be hearts? which below and why? A (13/52)cubed B (13/52)(12/51)(11/50) C (13/52)(13/51)(13/50) D (13/52)(12/52)(11/52)

*February 27, 2012*

**Math**

Laurie is holding 6 red cards and 7 black cards. If two cards are selected at random(w/out replacement), what is the probability that the first card selected is red and the second is black?

*February 27, 2012*

**Math**

We are studying Quadratic formula: A football player punts a ball. The path of the ball can be modeled by the equation y=-0.004x(squared) + x + 2.5, where x is the horizontal distance, in feet, the ball travels and y is the height, in feet, of the ball. How far from the ...

*February 27, 2012*

**Math-Probab.**

In a deck of 52 cards there are 13 hearts. If 3 are drawn from the deck, without replacement, what is the probability that all 3 cards will be hearts?

*February 26, 2012*

**math**

Amount of change over the original to find %.

*February 26, 2012*

**child care**

I don't think it is A because we use styrofoam daily at work with children

*February 26, 2012*

**Math**

Sorry, the radicand came out in a code. It is 2(radicand)108 over (radican)180y

*February 25, 2012*

**Math**

Simplifying Radicals: 2ã108 ----- ã180y The check mark represents the radicand. How do I work this problem?

*February 25, 2012*

**Ms. sue**

To Ms. Sue, Thanks for correcting my School subject. Did you answer my question? Cannot locate

*February 25, 2012*

**Old Bridge**

Sue has 8 pairs of dress shoes. How many diff. way can she arrange five pairs of her shoes in her closet?

*February 25, 2012*

**OldBridge**

Triangle ABC has sides of: AB=25 BC=4 CA=26 Angle B is a Rt. Angle. What is the approx. measure of Angle A? How do you find the answer? Thanks, Jane

*February 25, 2012*

**physics**

a ball (mass = 0.250 kg) is kicked off a porch (h = 1.50 m above the ground) with an initial velocity of 17.0 m/s at an unknown angle. what is the initial KE. What is the initial PE. what is the KE and speed of the ball when it is at the top of its ballistic arc (h = 9.50 m). ...

*February 21, 2012*

**Algebra**

Two fraternities, Sig Ep and Ep Sig, plan to raise money jointly to benefit homeless people on Long Island. They will sell Yoda vs. Alien T-shirts in the student center, but are not sure how much to charge. Sig Ep treasurer Augustus recalls that they once sold 140 shirts in a ...

*February 21, 2012*

**Math**

Find a linear equation whose graph is the straight line with the given property. Through (2, −7) and (1, 1) I got -8x-23, I know it doesn't match, maybe its the wrong formula Find a linear equation whose graph is the straight line with the given property. Through (1/...

*February 16, 2012*

**chemistry**

a 100 mL {100 grams} of water at 4.0 degrees celsius is heated until its tempurture is 37 degrees celcus. if the specific heat of water is 4.18 joules/grams degrees celcus calculate the amount of heat energy needed to cause this rise in tempurture

*February 15, 2012*

**science**

a 100 mL {100 grams} of water at 4.0 degrees celsius is heated until its tempurture is 37 degrees celcus. if the specific heat of water is 4.18 joules/grams degrees celcus calculate the amount of heat energy needed to cause this rise in tempurture

*February 15, 2012*

**Math**

We are studying pythagorean Theorem. How do I set this up to solve? A jogger goes half a mile north and then turns west. If the jogger finishes 1.3 mi from the starting point, how far west did the jogger go?

*February 15, 2012*

**Math**

A cube has all sides with a length of 7k^9n^8. The volume of a cube is found by raising the length of one side of the 3rd power. What is the final value of the coefficient when simplifying the expression? Is the answer 343?

*February 15, 2012*

**Math**

(6q^6)^-4 When I worked this I got 1/1296q^24. One of the choices given was 1/1296q^-24. The other choices were: 6q^1296, 1296q^2, 6q^-24. Is the answer any of these choices?

*February 15, 2012*

**Math**

Thank you so much for taking the time to explain it.

*February 15, 2012*

**Math**

Simplify: (-h^4)^5 Would it be -h^20 or h^20

*February 15, 2012*

**Algebra**

Find the slope of the given line, if it is defined y = (x + 4)/7 I can't find the answer. I don't understand what went wrong with my calculation. Thank you.

*February 15, 2012*