# Posts by sandra

Total # Posts: 1,156

**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?

**Algebra**

Thanks much

**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.

**Algebra**

That really helps, thanks.

**Algebra**

Multiply (x^2 + 8x + 15) / x – 4 * (x^2 – 16) / 2x + 6

**Algebra**

I don't understand your question since I don't know the value of b.

**Algebra**

What is the undefined value of: (3b^2 + 13b + 4) / (b + 4)

**Algebra**

Thanks much, that helps.

**Algebra**

Simplify (2a + 2) / a^2 – 1)

**Algebra**

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

**Algebra**

Divide (2x3 – x2 – 24x + 12) ÷ (2x – 1)

**Algebra**

Thank you

**Algebra**

What is the difference? (r+2 / r+4) – (3 / r + 1)

**Algebra**

What is the sum (1 / g+2) + (3 / g + 1)

**Algebra**

What is the sum (1 / 2b) + (b / 2)

**Algebra**

What is the difference (5x-2)/4x –(x-2)/4x

**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?

**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?

**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...

**Algebra**

Thank you, I will. that will help me learn.

**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)

**Algebra**

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

**English 10**

Yes and copied for future reference. Thank you

**English 10**

I meant "lower case letters"

**English 10**

Lower case numbers

**English 10**

The general notation for your supporting points in an outline is • Roman numerals. • capital letters. • Arabic numerals.* • lowercase letters.

**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)]

**Algebra**

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

**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)]

**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)]

**Algebra 9**

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

**English 10**

Which of the following should be done last when summarizing a source? • translate • evaluate • analyze • synthesize

**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)

**healthcare**

Write a 700-1500 word paper that discussed the problems with health care among Latinos

**Algebra**

Yes a typo - thanks

**Algebra**

What is the simplified form of (2x -25)/(2x -3x -10)?

**Algebra**

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

**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?

**Algebra Help**

Sorry, I missed it. Thanks.

**Algebra Help**

What is the value of c so that y = x² + 9x + c is a perfect square trinomial?

**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

**Algebra**

What is the value of c so that y = x² + 9x + c is a perfect square trinomial?

**Algebra**

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

**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

**Algebra**

Thanks so much

**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 = –...

**Algebra - help**

That did not help with the choices of .56 or .23 Any more help will be appreciated.

**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 ...

**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 ...

**Algebra**

Thanks

**Algebra**

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

**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 •...

**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...

**Algebra**

That helps alot - Thanks.

**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

**Algebra**

Thank you but could it also be 160.56 m or 160.23 m?

**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 ...

**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.

**English 10th grade**

Actually the answer is: his children - took the test.

**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.

**Algebra**

Thank you

**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

**Algebra**

Which expression gives the solutions of –5 + 2x² = –6x?

**English 10th grade**

Thank you - now it makes sense.

**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 ...

**Algebra**

Thank you

**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

**Biology**

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

**algebra**

yes, thanks, i solved the same:)

**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?

**history**

who wrote the song bobby magee. who sang the origional version of this song. In what year did the song become popular

**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 ...

**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

**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) &#...

**English**

Thank you.

**English**

None that I can see but I think the answer is either 2 or 3. Correct?

**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 ...

**English**

Thank you.

**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".

**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 ...

**English**

Sorry, I left out a mood.

**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 ...

**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

**Physics**

Thank u Damon for your help

**Physics**

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

**Physics**

Thank you

**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?

**Physics**

What exactly is the formula for it n jow did u get it?

**Physics**

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

**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?

**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.

**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.

**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.

**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?

**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?

**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: ...

**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.

**Algebra**

A community group is building a playground on a rectangular lot of land. The lot measures 6x by 9x and they want to cut out an area for a circular jungle gym with a radius of 4x. How much of the land will be left over after the jungle gym is built?

**Algebra**

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: ...

**Algebra**

What is the factored form of the following expression? x2 – 4xy – 21y2