Wednesday

April 16, 2014

April 16, 2014

Number of results: 215,330

**math**

let altitude be x area = 1/2 * base * altitude = 1/2 * x * 4x = 162 x^2 = 81 x=9 so altitude = 9cm
*Friday, February 11, 2011 at 8:16am by Anonymous*

**MATH**

Aircraft are landing and taking off on parallel runways at a busy airport. On its approach, one aircraft descends from an altitude of 1200m to an altitude of 500m in 35s. During the same time, a departing aircraft climbs from an altitude of 200 m to an altitudes of 1250m. A) ...
*Wednesday, January 5, 2011 at 6:49pm by Anonymous*

**math**

triangle ABC has vertices A(3,4), B(4,-3) and C(-4,-1). a. draw a sketch of the triangle b. draw the altitude from vertex A c. find the slope of side BC which is =-1/4 d. find the slope of the altitude from A which is 4 e. find the equation of the line that contains this ...
*Wednesday, October 27, 2010 at 7:40pm by Ted*

**math**

an altitude of triangle is 5/3rd of the length of its corresponding base if their altitude be increased by 4cm and the base is decreased by 2cm, the area of the triangles remain the same. find the base and altitude of triangle ?????
*Sunday, October 7, 2012 at 2:56am by TUHITUHI*

**math (altitude)**

Calculate how far it falls in 15 minutes and subtract that from the original altitude
*Saturday, September 22, 2007 at 10:06am by drwls*

**math**

the length of the base of a triangle is 4 times its altitude. if the area of a triangles is 162cm2 find the altitude
*Friday, February 11, 2011 at 8:16am by annette*

**math**

a jetliner is crusing at an altitude of 31,680 ft. What is the altitude in miles? Show work by using demensional analysis.
*Tuesday, October 26, 2010 at 1:20am by Anonymous*

**AP Calculus**

The sum of the two bases and the altitude of a trapezoid is 16ft. a) Define the area A of the trapezoid as function of its altitude. b) Find the altitude for which the trapezoid has the largest possible are. (Optimization)
*Sunday, October 31, 2010 at 5:26pm by Anonymous*

**math**

Since half of the isosceles would a right triangle, use the Pythagorean theorem with 1/2 value of the base. 4^2 + altitude^2 = 5^2 Solve for the altitude.
*Thursday, February 13, 2014 at 4:44am by PsyDAG*

**math (geometry)**

A parallelogram has sides 8 and 12. The shorter altitude is 6. Find the length of the other altitude. -------------------------------------------------------------------------------- It says the answer is 9, but I don't know how they got that. Any help is greatly appreciated!! =D
*Tuesday, March 11, 2008 at 10:14pm by Emily*

**Physics**

The modern Boeing 747 passenger jet airplane cruises at a speed up to 900 km/hr, at an altitude of 11,000 m. The cabin pressure is maintained equivalent to the atmospheric pressure at an altitude of 2,000 m. This is called the "cabin altitude". The pressure as a function of ...
*Sunday, January 27, 2013 at 4:01am by Francisco*

**math (altitude)**

An airplane flying at an altitude of 31,000 feet descends at a rate of 1,200 feet per minute. If the plane descends for 15 minutes, what would its altitude be in feet?: * 13,000 23,000 18,000 21,000
*Saturday, September 22, 2007 at 10:06am by anonymous*

**physics**

sinTHeta=1.22*lambda/slit sinTheta appx equal to tanTheta=3.3/altitude altitude=3.3m/1.22 * .002/5.5E-7 altitude...you do it..
*Friday, March 19, 2010 at 11:53am by bobpursley*

**Calculus**

Wheat is poured on the ground at a rate of 12 ft^3/s. The pile forms a cone whose altitude is always three fourths of the radius. Find the rate at which the altitude is increasing when the altitude is 6.0 ft.
*Saturday, March 10, 2012 at 1:48pm by Candy*

**Math**

the altitude, AD, to the hypotenuse BC of right triangle ABC divides the hypotenuse into segments that are 8 and 10 cm long. find the length of the altitude.
*Saturday, October 19, 2013 at 5:50am by anae*

**math**

The area of a trapezoid is given by the formula where b1, b2 are the lengths of the two bases a is the altitude of the trapezoid Recall that the bases are the two parallel sides of the trapezoid. The altitude (or height) of a trapezoid is the perpendicular distance between the...
*Thursday, March 19, 2009 at 7:42pm by Angie*

**Algebra 1**

First, calcuate the base of triangle C, wouldn't it be 5/6 of 6.72in? Now, the altitude of C must be the area/base. Now, the altitude of D must be 6/5 of the altitude of C. Neat.
*Wednesday, November 7, 2007 at 8:08pm by bobpursley*

**math**

A certain ball is dropped from an altitude of 1 meter and rebounds one-half of it's previous altitude. What is the total distance the ball has traveled when it hits the floor the 40th time?
*Thursday, September 5, 2013 at 2:33pm by Jacob*

**Physics**

A car of mass 1100 kg starts from rest at sea level and climbs a hill of altitude 50 m. At the top of the hill the car has a speed of 25 m/s. From the top of the hill the driver turns off the engine and coasts down to an altitude of 15 m. Assume the friction and the air ...
*Thursday, October 25, 2012 at 8:04pm by Sara*

**Physics**

A car of mass 1100 kg starts from rest at sea level and climbs a hill of altitude 50 m. At the top of the hill the car has a speed of 25 m/s. From the top of the hill the driver turns off the engine and coasts down to an altitude of 15 m. Assume the friction and the air ...
*Friday, October 26, 2012 at 7:43am by Sara*

**Physics**

A car of mass 1100 kg starts from rest at sea level and climbs a hill of altitude 50 m. At the top of the hill the car has a speed of 25 m/s. From the top of the hill the driver turns off the engine and coasts down to an altitude of 15 m. Assume the friction and the air ...
*Saturday, October 27, 2012 at 4:44pm by Sara*

**optimization**

You state that the altitude reached is defined by y = ex - x^2/2e. This compares to the normal expression for altitude of h = Vo(t) - gt^2/2 where h = the maximum altitude, Vo = the initial velocity, t = the time and g = the acceleration due to gravity. I therefore assume that...
*Thursday, January 13, 2011 at 9:29pm by tchrwill*

**Math**

The area of a triangle varies jointly as its base and altitude. By what percent will the area change if the base is increased by 15% and the altitude decreased by 25%?
*Tuesday, November 22, 2011 at 10:10am by Zoey*

**Math**

The area of a triangle varies jointly as its base and altitude. By what percent will the area change if the base is increased by 15% and the altitude decreased by 25%?
*Tuesday, November 22, 2011 at 5:15pm by Jake*

**Geometry altitude**

a(-2,4) b (4,6) c (-4,-4) find the equation for the altitude from each vertex of triangle abc.
*Monday, February 14, 2011 at 2:05am by Skye*

**physics**

Max altitude? 1) What is altitude at TimeinAir/2 ? hf=hi+22Sin38*t-4.9(t/2)^2
*Wednesday, September 22, 2010 at 8:59pm by bobpursley*

**Math**

1. The diagonal divides the rhombus into 2 congruent triangles. The altitude bisects the diagonal. (16/2)^2 + Y^2 = 10^2 Y^2 = 100-64 = 36 Y = 6 = Altitude. Area = 2(16/2 * 6) = 96 in^2.
*Sunday, June 9, 2013 at 5:36pm by Henry *

**geometry**

the altitude times the side length: Area = altitude × s A = 0.9 * 1.2 A = ________ square meters
*Friday, August 16, 2013 at 3:12pm by Ms. Sue*

**math**

the rim of a canyon is at an altitude of 45m. On a hike down into the canyon, a party of hikers stop for a rest 160m below the rim. They descend another 71m. What is their new altitude?
*Thursday, July 5, 2012 at 7:48pm by paula jones*

**physics**

Ignore the previous response as it did not answer your question. The required altitude to maintain a period of 48 hours derives from T = 2(Pi)sqrt[r^3/µ] where T = the period in seconds, r = the orbital radius in feet and µ = the Earth's gravitational constant = 1.407974x10^16...
*Wednesday, March 23, 2011 at 11:14pm by tchrwill*

**physics**

how would you calculate altitude given airspeed, rate of descent and time? I'm trying to find the change in altitude
*Monday, September 20, 2010 at 5:46pm by polly*

**Trigonometry**

One leg, half the base, and the altitude form a right triangle. The angle opposite the altitude is 42 degrees. Draw a figure and see. leg length = (L/2)/cos 42 = 9.82 foot (round to 9.8) altitude = (L/2) tan 42 = 6.57 foot (round to 6.6)
*Friday, February 26, 2010 at 1:33pm by drwls*

**geometry**

A hypotenuse has a ratio of 1:2 with what? the altitude? itself? its area? Do you mean the ratio of the altitude to the hypotenuse is 1:2? If so, from (x + y) = 2(6) = 12 and xy = 36, we derive y^2 - 12y + 36 = 0 from which y = 6 and x = 6, an isosceles right triangle with ...
*Saturday, March 5, 2011 at 2:19pm by tchrwill*

**Geography **

How do latitude and altitude affect the climate? My answer: The altitude affects the climate in the sense that the higher the altitude, the colder and harsher the climate will become. Latitude affecting the climate, however, depends on the equator. The closer the latitude is ...
*Monday, September 2, 2013 at 12:25pm by Anonymous*

**geometry**

The altitude upon the hypotenuse of a right triangle divides the hypotnuse into segments of 3 and 12. find the length of the altitude
*Tuesday, February 8, 2011 at 6:14pm by Jorge*

**physics**

Calculate the value of g for a satellite that is orbiting in a circle at an altitude equal to 3 Earth radii. also, along the same lines, A typical shuttle altitude is 220 km. Calculate the value of g at this altitude. The the mass of the Earth = 5.98 x 10^24 kg and the radius ...
*Thursday, March 3, 2011 at 9:33pm by kelly*

**physics**

A model rocket leaves the ground, heading straight up at 47 m/s. (a) What is its maximum altitude? m What are its speed and altitude at each of the following times? (b) 1 s m/s m (c) 4 s m/s m (d) 8 s m/s m
*Sunday, January 16, 2011 at 6:11pm by Jen*

**maths**

A rather lengthy problem I will describe the steps 1. Find the vertices of the triangle A, B, and C by solving pairs of equations. 2. Find the slope of line AB. The slope of the perpendicular form C to line AB will be the negative reciprocal of the slope of AB. You now have ...
*Thursday, December 27, 2012 at 12:56pm by Reiny*

**Math**

The base of tringular field is twice its altitude. If the cost of levelling the field at the rate of Rs 10per m^2 is Rs 4000,find its base and altitude.
*Sunday, September 9, 2012 at 10:46am by Simran kaur*

**Math**

The altitude of a triangle is increasing at a rate of 2500 centimeters/minute while the area of the triangle is increasing at a rate of 4500 square centimeters/minute. At what rate is the base of the triangle changing when the altitude is 9000 centimeters and the area is 87000...
*Tuesday, August 23, 2011 at 1:32am by Ning*

**Earth science **

I think both altitude and latitude have similar effects on temperature. Altitude plays a larger role, though, in precipitation.
*Monday, May 9, 2011 at 4:16pm by Ms. Sue*

**math**

The atmospheric pressure P in pounds per square inch (psi) is given by P = 14.7 e^−0.21 a where a is the altitude above sea level (in miles). If a city has an atmospheric pressure of 11.35 psi, what is its altitude?
*Thursday, November 14, 2013 at 8:29am by Anonymous*

**Geometry and Measurement**

Regarding: For b > a c = b^2[1 + a^2/b^2]/sqrt(a^2 + b^2) I forgot to acknowledge that when this expression is multipied out, the end result is c = sqrt(a^2 + b^2). I was initially surprised when deriving it from the relationship between the altitude to the hypotenuse and ...
*Friday, February 29, 2008 at 6:23pm by tchrwill*

**Weather & Climate (science)**

Which ones/one is true? a.)Altitude affects density b.)Altituce is the dictance above sea level c.)Altitude is also call elevation
*Wednesday, September 8, 2010 at 7:15pm by Dani *

**Physics**

A satellite is given a boost of 540 MJ of energy to move it from its initial orbit at an altitude of 150 km to a higher altitude orbit. If the satellite has a mass of 1.16 ✕ 10^3 kg, what is the new altitude it reaches? Take the mass of the Earth to be 5.97 x 10^24 kg ...
*Wednesday, April 2, 2014 at 3:59pm by Dan*

**Geometry**

* The altitude to the hypotenuse of a right triangle creates two similar triangles, each similar to the original right triangle and to each other. * The altitude to the hypotenuse of a right triangle is the geometric mean between the segments of the hypotenuse created by the ...
*Tuesday, May 12, 2009 at 5:19pm by TchrWill*

**geometry**

* The altitude to the hypotenuse of a right triangle creates two similar triangles, each similar to the original right triangle and to each other. * The altitude to the hypotenuse of a right triangle is the geometric mean between the segments of the hypotenuse created by the ...
*Wednesday, May 23, 2012 at 9:08pm by tchrwill*

**algebra**

Length of what? The altitude? If the AREA is 180 in^2, the altitude must be 20 inches. (1/2)*18*x = 180 Solve for x.
*Wednesday, August 11, 2010 at 9:07pm by drwls*

**geometry**

the base of a triangle is 4dm longer than its altitude, and its area is16dm^2. Find the lengths of the base and its altitude.
*Sunday, February 6, 2011 at 6:33am by ja*

**Algebra Honors**

The length of the base of a triangle is 4 times its altitude. If the area the triangle is 162 cm2, find the altitude.
*Thursday, April 2, 2009 at 5:04pm by Raj*

**Geometry**

The altitude of the hypotenuse of a right triangle divides the hypotenuse into segments of lengths 14 and 8. What is the length of the altitude?
*Tuesday, February 21, 2012 at 9:51pm by Myles*

**geometry**

Let Zz be the altitude from Z to XY. This is the line y = -4 since XY is vertical. Let Xx be the altitude from X to YZ. This is a line through (-11,0) with slope -5/2. (y-0)/(x+11) = -5/2 y = -5/2 x - 55/2 Where do the lines intersect? -5/2 x - 55/2 = -4 -5x - 55 = -8 -5x = 47...
*Saturday, November 19, 2011 at 9:12pm by Steve*

**slope**

How are you defining altitude? Normally, I would measure altitude perpendicular to either the axis coordinate, OR perpendicular to a side of the rectangle.
*Sunday, January 13, 2008 at 8:55am by bobpursley*

**Analytic geometry - finding point by intersect lin**

The details get a bit messy, but you can place A=(0,0) B=(h,k) C=(m,n) Then the altitude from B to AC is y-k = -h/k (x-h) The altitude from C to AB is y-n = -m/n (x-m) solve for x and y. Trilinear coordinates are much cleaner, but less well known.
*Tuesday, March 5, 2013 at 9:38am by Steve*

**pressure vs altitude**

Unless you have been given an equation for atmospheric pressure vs. altitude, I don't see why this is considered an algebra question. You can find the answer using the table in this web site: http://www.engineeringtoolbox.com/air-altitude-pressure-d_462.html The answer (...
*Tuesday, July 10, 2012 at 10:10pm by drwls*

**Math Homework**

1) Given the side of a square pyramid is 6cm and the altitude is 4cm calculate the surface area. 2) Given the side of a square pyramid is 12cm and the altitude is 8cm calculate the surface area. 3) Given the side of a square pyramid is 18cm and the altitude is 12cm calculate ...
*Tuesday, February 6, 2007 at 8:41pm by Student*

**Geometry**

Using vectors, show that the centroid of a regular pyramid with a rectangular base lies on the altitude to the base and is 4/5 of the altitude's length from the vertex.
*Monday, December 3, 2012 at 9:33pm by Delia*

**Physics**

Start by computing the velocity and altitude achieved while the engine is on. Then write the equation for height and velocity during free fall. It's not that hard. When the velocity is zero during the free fall stage, maximum height has been reached. Solve for that time, and ...
*Monday, September 13, 2010 at 11:35pm by drwls*

**Physics-Gravitational Potential Energy**

A satellite is given a boost of 540 MJ of energy to move it from its initial orbit at an altitude of 150 km to a higher altitude orbit. If the satellite has a mass of 1.16 ✕ 103 kg, what is the new altitude it reaches? Take the mass of the Earth to be 5.97 x 10^24 kg ...
*Tuesday, April 1, 2014 at 10:06pm by Dan*

**geomerty HELP PLEASE!**

Using vectors, show that the centroid of a regular pyramid with a rectangular base lies on the altitude to the base and is 4/5 of the altitude's length from the vertex.
*Tuesday, December 4, 2012 at 9:57am by Delia*

**Math**

A lot is in the shape of a trapezoid. The sum of the bases is 180 feet. If the area of the lot is 8,100 square feet, what is the distance across the lot, i.e. the altitude of the figure? The altitude of the trapezoid is __ feet.
*Thursday, April 25, 2013 at 11:35am by Joe*

**Trigonometry **

Your altitude is 40,000 feet and you detect a target at a depression angle of 6 degrees and a range of 20 miles. what is the altitude of the target? Draw a picture.
*Sunday, March 11, 2012 at 11:43pm by Diana*

**math**

The atmospheric pressure P in pounds per square inch (psi) is given by the formula below, where a is the altitude above sea level (in miles). If a city has an atmospheric pressure of 13.25 psi, what is its altitude? (Recall that 1 mi = 5,280 ft. Round your answer to the ...
*Sunday, January 22, 2012 at 6:14pm by Anonymous*

**physics**

A child loses his balloon, which rises slowly into the sky. a) If the balloon is 21.5 cm in diameter when the child loses it, what is its diameter at an altitude of 1150 m? Assume that the balloon is very flexible and so surface tension can be neglected. b) And what is the ...
*Wednesday, March 21, 2012 at 1:57pm by maria*

**help physics**

A satellite, LangSat, moves in circular orbit around the Earth at a speed of 4.95kms-1. (i) What is the altitude of the satellite (ii) Determine the period of the satellite’s orbit (iii) What is the value of the gravity, g, at the satellite. (iv) If another satellite, DukuSat...
*Monday, September 2, 2013 at 9:06am by kent*

**Geometry**

if it fits inside the circle, the distance from the center to a point of the pentagon is 3 cm. There are five isoceles triangles in the pentagon, each with an angle at the center of 360/5 = 72 degrees and sides of 3 cm What we have to do is find the area of that triangle and ...
*Saturday, April 19, 2008 at 4:18pm by Damon*

**calc**

2- The earth’s atmospheric pressure p is often modeled by assuming that the rate dpdhat Which p changes with the altitude above sea level is proportional to hp. Suppose that the pressure at sea level is 1013 millibars (about 14.7 pounds per square inch) and that the pressure ...
*Tuesday, April 10, 2007 at 11:52pm by barb*

**physics**

In late 2001, steve Fossett tried to fly a balloon nonstop around the world . why on his attempted circumnavigation of the globe did Steve attempted to travel at an altitude of approximately 10000 m? That is a typical stratosphere flight altitude, where the pilot can usually ...
*Saturday, June 16, 2007 at 5:17am by Emma*

**College Math II**

If a ball is tossed into the air from a height of 6 feet with a velocity of 32 feet per second, then its altitude at time t (in seconds) can be described by the function A(t) = - 16t^2 + 32t + 6. Find the altitude of the ball at 2 seconds. I am having problems understanding ...
*Saturday, November 21, 2009 at 11:54am by Lori*

**algebra**

The length of an altitude of a triangle is 1/3 the length of the side to which it is drawn. If the area is 6 square cm., then what is the length of the altitude?
*Thursday, January 6, 2011 at 5:46pm by Tammy*

**11th grade**

Calculate the minimum change in velocity (delta V or ∆V) required for the Space Shuttle to decrease its altitude to 60 miles if it’s orbiting with an apogee of 236 miles and a perigee of 215 miles above the surface of Earth. Use the rule of thumb that below an altitude ...
*Thursday, December 16, 2010 at 12:03pm by Vanessa*

**Geometry**

There is a right triangle with an altitude of 12. The line of the altitude splits the base into two segments, x and x+7. One leg of the right triangle is y, which is closest to the segment x. The other leg is z, which is closest to segment x+7. We have to figure out what the ...
*Tuesday, January 8, 2008 at 8:50pm by tchrwill*

**Phizzics....**

The Canadian microsatellite MOST (Microvariability and Oscillations of Stars) has a mass of just 52 kg. It travels in an almost circular orbit at an average altitude of 820 km above Earth’s surface. a) Calculate the gravitational force between Earth and the MOST satellite at ...
*Tuesday, May 15, 2012 at 7:29pm by dreamygirl*

**math**

The atmospheric pressure P in pounds per square inch (psi) is given by the formula below, where a is the altitude above sea level (in miles). If a city has an atmospheric pressure of 13.25 psi, what is its altitude? (Recall that 1 mi = 5,280 ft. Round your answer to the ...
*Thursday, October 20, 2011 at 2:32pm by Anonymous*

**Algebra II**

The area of a triangle varies jointly as its base and altitude. By what percent will the area change if the base is increased by 15% and the altitude decreased by 25%?
*Monday, November 21, 2011 at 10:03pm by Ashley*

**Algebra II**

The area of a triangle varies jointly as its base and altitude. By what percent will the area change if the base is increased by 15% and the altitude decreased by 25%?
*Tuesday, November 22, 2011 at 2:36pm by Jake*

**Algebra II**

The area of a triangle varies jointly as its base and altitude. By what percent will the area change if the base is increased by 15% and the altitude decreased by 25%?
*Tuesday, November 22, 2011 at 2:36pm by Jake*

**physics**

A spacecraft is in circular Earth orbit at 5400km altitude. By how much will its altitude decrease if it moves to a new circular orbit where its orbital speed is 20% higher?
*Sunday, November 10, 2013 at 6:42pm by Judith*

**chemistry**

At an altitude of 50.00 km, the average atmospheric temperature is essentially 0 degrees C. What is the average number of air molecules per cubic centimeter of air at this altitude?
*Monday, April 12, 2010 at 7:03pm by Laura*

**chemistry**

At an altitude of 50.00 km, the average atmospheric temperature is essentially 0 degrees C. What is the average number of air molecules per cubic centimeter of air at this altitude?
*Monday, April 12, 2010 at 7:30pm by Laura*

**Chemistry**

At an altitude of 50.00 km, the average atmospheric temperature is essentially 0 degrees C. What is the average number of air molecules per cubic centimeter of air at this altitude?
*Tuesday, April 13, 2010 at 1:12pm by Anonymous*

**Math-please help! **

the area of the base of a triangular prisim A is 15 square inches and its altitude is 8 inches. Rectangular prism B has a square base that measures 2 inches on each side. If prisim A and prisim B have the same volumes, what must be the altitude of prisim b?
*Monday, April 12, 2010 at 8:21pm by Lena*

**math/geometry**

What are the surface areas of this two figures? a) a triangular pyramid with base of 5 cm, an altitude of the base of 8.7 cm and a slant height = 6.9 cm b) a square pyramid with a slant height of 5.2cm and an altitude of the triangle of 9cm.
*Tuesday, November 11, 2008 at 10:21am by katie*

**Math**

Method: Find the equation of two of those altitudes. Solve the two equations to find their intersection point. How? Make a rough sketch Pick any point and find the slope of the opposite side. The slope of the altitude to that side is the negative reciprocal of the slope of ...
*Friday, December 7, 2012 at 4:11pm by Bobby Fett*

**geometry**

let that altitude be x Can you see how that altitude splits your right-angled triangle into two smaller right-angled triangles which are similar? so you can set up the ratio 12/x= x/3 x^2= 36 x = 6
*Tuesday, February 8, 2011 at 6:14pm by Reiny*

**math**

The given sides look suspiciously like the sides of a Heronian triangle, one that is comprised of two Pyhagorean triangles with a common altitude. In reality, the triangle is the 5-12-13 triangle joined to the 12-16-20 triangle having the common altitude of 12.
*Tuesday, June 8, 2010 at 6:09pm by tchrwill*

**CAL**

The altitude of a triangle is increasing at a rate of 2500 centimeters/minute while the area of the triangle is increasing at a rate of 4000 square centimeters/minute. At what rate is the base of the triangle changing when the altitude is 11500 centimeters and the area is ...
*Sunday, July 10, 2011 at 4:25am by lan*

**CAL**

The altitude of a triangle is increasing at a rate of 2500 centimeters/minute while the area of the triangle is increasing at a rate of 4000 square centimeters/minute. At what rate is the base of the triangle changing when the altitude is 11500 centimeters and the area is ...
*Saturday, July 9, 2011 at 7:08pm by Laura Le*

**Calculus Please help!**

The altitude of a triangle is increasing at a rate of 2500 centimeters/minute while the area of the triangle is increasing at a rate of 3500 square centimeters/minute. At what rate is the base of the triangle changing when the altitude is 7000 centimeters and the area is 87000...
*Friday, February 28, 2014 at 2:51pm by ALI*

**Geometry**

the orthocentre is the intersection of the altitudes. slope AB = (4-0)/(-2-4) = -2/3 so slope of altutude from C is 3/2 , and y-intercept is 6 equation of altitude from C is y = (3/2)x + 6 slope AC = 6/-4 = -3/2 slope of altitude from B is 2/3 equation: y = (2/3)x + b but B(-2...
*Sunday, December 4, 2011 at 7:29pm by Reiny*

**Math**

That will not work because you do not know the altitude of the triangle. You must get the area of the triangular base from the lengths of the three sides. To find the altitude from the 21 cm base: call the part next to the 10 cm leg x call the part next to the 14 cm leg (21-x...
*Monday, October 13, 2008 at 5:49pm by Damon*

**Math (immediate help, please)**

center angle = 360/8 = 45 half center angle = 22.5 tan half center angle = 4/altitude so altitude = 4/.414 = 9.657 area of half of section = (1/2)(4)(9.657) = 19.31 times 16 = 309
*Thursday, March 7, 2013 at 6:43pm by Damon*

**Analytic geometry - finding point by intersect lin**

I have a triangle ABC. The slope of AB is -1/ab, the slope of AC is -1/ac, and the slope of BC is -1/ac. My question is, I have 3 lines: Altitude from A to BC, altitude from B to AC, and altitude from C to AB. I know their slope because it is just -1/slope. But I want to know ...
*Tuesday, March 5, 2013 at 9:38am by Knights*

**college math**

The atmospheric pressure P in pounds per square inch (psi) is given by the formula below, where a is the altitude above sea level (in miles). If a city has an atmospheric pressure of 13.25 psi, what is its altitude? (Recall that 1 mi = 5,280 ft. Round your answer to the ...
*Sunday, July 10, 2011 at 10:51pm by joyce*

**Math (Proportions)**

3. The ratio of the altitude of a triangle to the length of its base is 5:12. Calculate the altitude if the length of the base is 42mm. 17.5 length/base= 5/12=x/42= 17.5
*Friday, October 18, 2013 at 7:37pm by Jerald*

**chemistry**

A high-altitude balloon contains 97.5 L of helium gas at 95.8 kPa. What is the volume when the balloon rises to an altitude where the pressure is only 21.5 kPa? (Assume that the temperature remains constant.)
*Wednesday, March 2, 2011 at 5:12pm by lisa*

**7th physics**

It will depend upon whether the balloon is rising or falling when the rock is released. If the balloon altitude is constant at release of the rock, Y = (g/2)*t^2 is the distance it falls in time t g = 32.2 ft/s^2 t = 7 s Solve for the altitude Y
*Thursday, January 5, 2012 at 7:42pm by drwls*

**Physics**

After t = 1.9 seconds, it attains a height of H = (a/2) t^2 = 137.2 m and a velocity of V = a*t = 144.4 m/s As the kinetic energy is converted to gravitational energy at maximum altitude, it will rise an additional distance H' given by g*H' = V^2/2 H' = 1064 m The maximum ...
*Monday, September 10, 2012 at 2:20am by drwls*

**physics**

Do an energy balance. Work done on balloon = (increases in KE) + (increase in gravitational potential energy) Solve for the G.P.E change. You can use that number to compute the altitude. It is OK to assume g is constant over the altitude range of a balloon.
*Sunday, May 9, 2010 at 6:29pm by drwls*

**math**

If the length of one of its sides is x. Then x/2 is half the side. An altitude divides the equilateral triangle into two congruent right triangles, each with half of one side (x/2) as the short side, the altitude as the long side, and the side (x) as the hypotenuse. So by ...
*Saturday, May 25, 2013 at 6:45pm by MathMate*

Pages: **1** | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | Next>>