Saturday
February 13, 2016

Posts by sandra

Total # Posts: 1,051

Algebra
Subtract (x^2 – 1) / (x^2 – x – 2) – (x-1) / (x-2)
April 16, 2014

Algebra
Edie can paint a wall in 3 hours. Dan can paint the same wall in 6 hours. If they work together, how many hours will it take Edie and Dan to paint the wall?
April 16, 2014

Physics
Gravity on Mars is 1/3 of that on earth. If Mars atmosphere is only 2 km thick, what is atmospheric pressure on Mars?
April 16, 2014

Physics
An airplane is flying at an altitude of 2,000 m with a speed of 216 m/s. What is the pressure of air outside the plane?
April 16, 2014

Algebra
Thanks much
April 16, 2014

Algebra
John walked 10 miles on Saturday. He walked twice as fast on the second 5 miles of his walk than he walked on the first 5 miles of his walk. Which expression represents the time he spent walking? Let x = John's speed on the first half of his walk.
April 16, 2014

Algebra
That really helps, thanks.
April 16, 2014

Algebra
Multiply (x^2 + 8x + 15) / x – 4 * (x^2 – 16) / 2x + 6
April 16, 2014

Algebra
I don't understand your question since I don't know the value of b.
April 15, 2014

Algebra
What is the undefined value of: (3b^2 + 13b + 4) / (b + 4)
April 15, 2014

Algebra
Thanks much, that helps.
April 15, 2014

Algebra
Simplify (2a + 2) / a^2 – 1)
April 15, 2014

Algebra
Thank you, I always appreciate knowing the steps that leads to the solution that I can work.
April 15, 2014

Algebra
Divide (2x3 – x2 – 24x + 12) ÷ (2x – 1)
April 15, 2014

Algebra
Thank you
April 14, 2014

Algebra
What is the difference? (r+2 / r+4) – (3 / r + 1)
April 14, 2014

Algebra
What is the sum (1 / g+2) + (3 / g + 1)
April 14, 2014

Algebra
What is the sum (1 / 2b) + (b / 2)
April 14, 2014

Algebra
What is the difference (5x-2)/4x –(x-2)/4x
April 14, 2014

Physics
An airplane is flying at an altitude of 2,000 m with a speed of 216 m/s. What is the pressure of air outside the plane?
April 14, 2014

Physics
Gravity on Mars is 1/3 of that on earth. If Mars atmosphere is only 2 km thick, what is atmospheric pressure on Mars?
April 14, 2014

English
Please check if my answer is correct... Identify the INCORRECTLY punctuated sentence. In softball, pitchers throw the ball underhand; in baseball, the ball is thrown overhand. • Ice hockey is played on a rink; but field hockey is played outdoors. • Another difference...
April 11, 2014

Algebra
Thank you, I will. that will help me learn.
April 9, 2014

Algebra
written wrong the first time... [(x^2 -16) / (2x^2-9x + 4)] / [(2x^2 + 14x + 24) / (4x + 4)] Is the answer? 1 / (3+1)
April 9, 2014

Algebra
[(x^2 -16) / (2x^2-9x + 4)] / [(2x^2 + 14x + 24) / (4x + 4)] is the answer 1 / x + 3
April 9, 2014

English 10
Yes and copied for future reference. Thank you
April 9, 2014

English 10
I meant "lower case letters"
April 9, 2014

English 10
Lower case numbers
April 9, 2014

English 10
The general notation for your supporting points in an outline is • Roman numerals. • capital letters. • Arabic numerals.* • lowercase letters.
April 9, 2014

Algebra
4 This is hard for me to understand how to work them... What is the simplified form of the product [(x^2 + 8x + 15)/(x-4)] * [(x^2 – 16) / 2x + 6)]
April 9, 2014

Algebra
What is the quotient? [(x^2 -16) / (2x^2-9x + 4)] / [(2x^2 + 14x + 24) / (4x + 4)]
April 9, 2014

Algebra
I may not be writing this right... What is the simpliest form for the product? [(x + 1) / (x^2 – 25)] * [(x +5) / (x^2 +8x +7)]
April 9, 2014

Algebra 9
Steve, I am sorry, I left out a number: What is the quotient? [(x^2 -16) / (2x^2-9x + 4)] / [(2x^2 + 14x + 24) / (4x + 4)]
April 9, 2014

Algebra 9
What is the quotient [(x^2) / (2x^2-9x + 4)] / [(2x^2 + 14x + 24) / (4x + 4)]
April 9, 2014

English 10
Which of the following should be done last when summarizing a source? • translate • evaluate • analyze • synthesize
April 8, 2014

Algebra
What are the coordinates of the x-intercepts of the graph of y = 2x2 + 6x – 20? • (–5, 0), (2, 0) • (5, 0), (–2, 0) • (–4, 0), (10, 0) • (4, 0), (–10, 0)
April 8, 2014

healthcare
Write a 700-1500 word paper that discussed the problems with health care among Latinos
April 7, 2014

Algebra
Yes a typo - thanks
April 7, 2014

Algebra
What is the simplified form of (2x -25)/(2x -3x -10)?
April 7, 2014

Algebra
What is the simplified form of 2x + 6 ? 4x - 8 (there should be a line between them.)
April 6, 2014

Algebra need help
I do not know how to do this - also please explain... What is the value of c so that y = x² + 9x + c is a perfect square trinomial?
April 4, 2014

Algebra Help
Sorry, I missed it. Thanks.
April 4, 2014

Algebra Help
What is the value of c so that y = x² + 9x + c is a perfect square trinomial?
April 4, 2014

Algebra
Use the quadratic formula to solve the equation. If necessary, round to the nearest hundredth. x² – 21 = –4x • 7, 3 • –7, 3 • 7, –3 • –7, –3
April 4, 2014

Algebra
What is the value of c so that y = x² + 9x + c is a perfect square trinomial?
April 4, 2014

Algebra
Find the solutions to the system. y = x² + 5x + 6 y = 4x + 12 (1 point)
April 4, 2014

Algebra
Solve the equation by completing the square. x² – 7x – 4 = 0 • 7.53, –0.53 • –7.53, –0.53 • –7.53, 0.53 • 7.53, 0.53
April 4, 2014

Algebra
Thanks so much
April 4, 2014

Algebra
I can't figure this out.. A physics student stands at the top of hill that has an elevation of 37 meters. He throws a rock and it goes up into the air and then falls back past him and lands on the ground below. The path of the rock can be modeled by the equation y = –...
April 4, 2014

Algebra - help
That did not help with the choices of .56 or .23 Any more help will be appreciated.
April 4, 2014

Algebra - help
A model rocket is launched from a roof into a large field. The path of the rocket can be modeled by the equation y = –0.06x² + 9.6x + 5.4 where x is the horizontal distance, in meters, from the starting point on the roof and y is the height, in meters, of the rocket ...
April 4, 2014

Algebra
A physics student stands at the top of hill that has an elevation of 37 meters. He throws a rock and it goes up into the air and then falls back past him and lands on the ground below. The path of the rock can be modeled by the equation y = –0.02x² + 0.8x + 37 where ...
April 4, 2014

Algebra
Thanks
April 4, 2014

Algebra
Solve the equation using the Zero Product Property. (3x + 1)(x – 5) = 0 • and 5 • and –5 • and 5 • and –5
April 4, 2014

Algebra
A community group is planning the expansion of a square flower garden in a city park. If each side of the original garden is increased by 9 meters, the new total area of the garden will be 169 square meters. Find the length of each side of the original garden. • 9 m •...
April 4, 2014

Algebra
A catapult launches a boulder with an upward velocity of 184 feet per second. The height of the boulder, (h), in feet after t seconds is given by the function h(t) = –16t² + 184t +20. How long does it take the boulder to reach its maximum height? What is the boulder...
April 3, 2014

Algebra
That helps alot - Thanks.
April 3, 2014

Algebra
If an object is dropped from a height of 144 ft, the function h(t) = –16t² + 144 gives the height of the object after t seconds. When will the object hit the ground? • 1.5 s • 3 s • 6 s • 9 s
April 3, 2014

Algebra
Thank you but could it also be 160.56 m or 160.23 m?
April 3, 2014

Algebra
A model rocket is launched from a roof into a large field. The path of the rocket can be modeled by the equation y = –0.06x² + 9.6x + 5.4 where x is the horizontal distance, in meters, from the starting point on the roof and y is the height, in meters, of the rocket ...
April 3, 2014

Physics
What pressure is exerted by the tip a nail struck with a Force of 20,000N? Assume the tip is a 1.5mm-radius circle.
April 1, 2014

English 10th grade
Actually the answer is: his children - took the test.
March 25, 2014

English 10th grade
In "Like the Sun," all of the following would be considered "casualties" of Sekhar's truth except his • children • colleagues • headmaster • wife It almost seems it could be any of them but I need the right one.
March 25, 2014

Algebra
Thank you
March 25, 2014

Algebra
Which kind of function best models the set of data points (–3, 18), (–2, 6), (–1, 2), (0, 11), and (1, 27)? • linear • quadratic • exponential • none of the above
March 25, 2014

Algebra
Which expression gives the solutions of –5 + 2x² = –6x?
March 24, 2014

English 10th grade
Thank you - now it makes sense.
March 24, 2014

English 10th grade
This is confusing to me: "Truth, Sekhar reflected, is like the sun. I suppose no human being can ever look it straight in the face without blinking or being dazed. He realized that, morning till night, the essence of human relationships consisted in tempering truth so ...
March 24, 2014

Algebra
Thank you
March 24, 2014

Algebra
A box shaped like a rectangular prism has a height of 17 in and a volume of 2,720 in³ The length is 4 inches greater than twice the width. What is the width of the box? • –10 in • 8 in • 20 in • 40 in
March 24, 2014

Biology
The integumentary system includes • skin only** • hair only • nails only • skin, hair, and nails Is my answer correct? the **
March 22, 2014

algebra
yes, thanks, i solved the same:)
March 21, 2014

algebra
The manager of a bulk foods establishment sells a trail mix for $6 per pound and premium cashews for $13 per pound. The manager wishes to make a 315-pound mixture that will sell for $8 per pound. How many pounds of each should be used?
March 21, 2014

history
who wrote the song bobby magee. who sang the origional version of this song. In what year did the song become popular
March 20, 2014

Biology
How do the kidneys clean the blood? (1 point) • Kidneys clean the blood by breaking down nutrients. • Kidneys clean the blood by filtering it to remove wastes. • Kidneys clean the blood by absorbing nutrients. • Kidneys clean the blood by destroying ...
March 20, 2014

Algebra
Which of the following is a solution of x² + 14x + 112 = 0? If necessary, round to the nearest hundredth. (1 point) • x = –0.24 • x = –4.24 • 4.24 • no solution
March 18, 2014

Algebra
One more rectangular-shaped piece of metal siding needs to be cut to cover the exterior of a pole barn. The area of the piece is 30 ft². The length is 1 less than 3 times the width. How wide should the metal piece be? Round to the nearest hundredth of a foot (1 point) &#...
March 18, 2014

English
Thank you.
March 18, 2014

English
None that I can see but I think the answer is either 2 or 3. Correct?
March 18, 2014

English
Which of the following sentences from "Five Hours to Simla" best illustrates the mood of frustration? (1 point) • "After the first cacophony of screeching brakes and grinding gears. there followed the comparatively static hum of engines, and drivers waited ...
March 18, 2014

English
Thank you.
March 18, 2014

English
Yes, but they don't help me know exactly what the answer is. It could be all of them. I think it might be "giddy".
March 18, 2014

English
Sorry, I left out a "mood" Read the following sentences from "Five Hours to Simla." The baby let drop its narcotic rubber teat, delighted. Its eyes grew big and shone at all it saw flowering about it. The little girl was perplexed, wondering what to choose ...
March 18, 2014

English
Sorry, I left out a mood.
March 18, 2014

English
Read the following sentences from "Five Hours to Simla." The baby let drop its narcotic rubber teat, delighted. Its eyes grew big and shone at all it saw flowering about it. The little girl was perplexed, wondering what to choose from so much till the perfect choice ...
March 18, 2014

Finance
how much should be paid for a bond with a coupon rate of 3.8% a yield to maturity of 6.2% and it wil mature in 7 years
March 10, 2014

Physics
Thank u Damon for your help
March 10, 2014

Physics
What is the work done by a crane that lifts a 1,200kg object 30m?
March 10, 2014

Physics
Thank you
March 10, 2014

Physics
The rockets on a cell phone satellite provide a thrust of 12,000N. If the mass of the satellite is 15,000kg, What will be the resulting acceleration?
March 10, 2014

Physics
What exactly is the formula for it n jow did u get it?
March 10, 2014

Physics
If you throw a 0.5 kg ball straight up with a speed of 10 m/s, how high will it go?
March 10, 2014

Algebra word problem
A family is building a rectangular patio in their backyard. The rectangular yard has dimensions of (8x+2) by (6x + 3) and they are planning the patio to be (x + 5) by (3x + 1). What is the area of the remaining yard after the patio has been built?
March 7, 2014

Algebra
The area of a rectangular art studio is given by the trinomial 24x2 – 4x – 8. What are the possible dimensions of the studio? Use factoring.
March 7, 2014

Algebra
The area of a rectangular table is given by the trinomial x2 + 7x – 30. What are the possible dimensions of the rectangle? Use factoring.
March 7, 2014

Algebra word problem
The area of a rectangular garden is given by the trinomial x2 + 6x – 27. What are the possible dimensions of the rectangle? Use factoring.
March 7, 2014

Algebra
A sports team is building a new stadium on a rectangular lot of land. If the lot measures 6x by 10x and the sports field will be 1x by 4x, how much of the lot will be left over to build bleachers on?
March 7, 2014

Algebra word problem
A family is having a pool built in their backyard. If their yard is rectangular and measures 7x by 6x and the pool is circular with a radius of 2x how much of the yard will be left over after the pool is built?
March 7, 2014

Algebra - help
A biologist studied the populations of common guppies and Endler’s guppies over a 6-year period. The biologist modeled the populations, in tens of thousands, with the following polynomials where x is time, in years. common guppies: 3.1x2 + 6x + 0.3 Endler’s guppies: ...
March 7, 2014

Algebra
A sphere has a radius of 4x + 1. Which polynomial in standard form best describes the total surface area of the sphere? Use the formula S = 4(pi)r2 for the surface area of a sphere.
March 7, 2014

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