# Posts by hy

Total # Posts: 45

**math**

the denominator of a rational number is greater than its numerator BY 7 if the numerator is increased by 17 and the denominator is deacreased by 6 the new number becomes 2 find the orginal number

*July 4, 2016*

**math**

one third of which number must be subtracted from 7/11 to give 24/25

*July 3, 2016*

**math - linear equation**

what do you mean?

*March 31, 2015*

**math - linear equation**

How do I write a system of equations that is linear and graph? Thanks

*March 31, 2015*

**math**

Suppose 10% of the flights arriving at an airport arrive early, .

*May 29, 2013*

**Physics**

Problem 2 d) and e) formula does not work please help!

*May 22, 2013*

**physicssssss**

In a cargo plane, the center of gravity must be between the front and rear landing gears in order to maintain a torque equilibrium. The front landing gears help counteract the torque provided by the rear landing gears in this case. A jet transport has a weight of 1.00 106 N ...

*March 1, 2011*

**Physics**

A lumberjack (mass = 98 kg) is standing at rest on one end of a floating log (mass = 220 kg) that is also at rest. The lumberjack runs to the other end of the log, attaining a velocity of +3.5 m/s relative to the shore, and then hops onto an identical floating log that is ...

*February 9, 2011*

**PHYSICS**

The space probe Deep Space I was launched on October 24, 1998. Its mass was 474 kg. The goal of the mission was to test a new kind of engine called an ion propulsion drive. This engine generated only a weak thrust, but it could do so over long periods of time with the ...

*December 5, 2010*

**physics**

T=mg+ma mg = weight = 63.o*9.81 ma= 63*.5 then add to get T

*December 5, 2010*

**Physics**

average a = (final velocity-initial v)/time elaspsed = (2800rpm/900rpm)/4.5s

*December 4, 2010*

**physicccs!**

A paraglider is flying horizontally at a constant speed. Assume that only two forces act on it in the vertical direction, its weight and a vertical lift force exerted on its wings by the air. The lift force has a magnitude of 1900 N. For both questions, take the upward ...

*December 4, 2010*

**physic**

A water skier has a mass of 73 kg. Find the magnitude of the net force acting on the skier when she lets go of the tow rope and glides to a halt in 20 s.

*December 4, 2010*

**physics**

it's one cable, with a crate tie at the bottom and a worker in the middle of the cable between the crate and whatever the top end is, and he is climbing upward with a=.620m/s^2

*December 4, 2010*

**physics**

A cable is lifting a construction worker and a crate The weights of the worker and crate are 915 and 1430 N, respectively. The acceleration of the cable is 0.620 m/s2, upward. what is the tension in the cable below the worker? what is it above the worker?

*December 4, 2010*

**Math**

mutiply out the 2 factors and subrtract 91 from both side to equate equation to zero then solve for root

*December 4, 2010*

**Math**

(X-14)^2+X^2 = 26^2 solve for x and x-14

*December 4, 2010*

**physics urgent helppp!!!**

A rocket of mass 4.50 105 kg is in flight. its thrust is directed at an angle of 49.0° above the horizontal and has a magnitude of 6.00 106 N. Find the magnitude and direction of the rockets acceleration. Give the direction as an angle above the horizonal.

*November 21, 2010*

**foreign language(SPANISH)**

second word is quiero

*November 21, 2010*

**physic**

sun------------moon I I I Earth I still don't get the problem...the resultant vector founded did not solve it please help

*November 21, 2010*

**physic**

The drawing (not to scale) shows one alignment of the sun, earth, and moon. The gravitational force SM that the sun exerts on the moon is perpendicular to the force EM that the earth exerts on the moon. The masses are: mass of sun = 1.99 1030 kg, mass of earth = 5.98 1024 kg, ...

*November 21, 2010*

**physics Helppp**

3 mass are collienear formation A, B, C massA is 363 kg and is .5m away from mass B (517 kg)and mass B is .25m away from mass C (154kg) Find the magnitude and direction of the net gravitational force acting on each of the three particles (let the direction to the right be ...

*November 21, 2010*

**physics**

a rocket of mass of 450000kg is in flight. its thrust is directed at angle of 62.5 degree above horizantal n has magnitude of 6000000 N. find the magnitude and direction of rockets acceleration. give direction as an angle above horizontal

*November 21, 2010*

**physics HELP**

a 18.0kg sled being pulled across horizontal surface at constant velocity. pulling force has magnitude of 82.0N and is directed at angle of 30 degree above horizontal. determine coefficient of kinetic friction

*November 21, 2010*

**Geometry**

supplement angles add up to be 180 so it'll be 180-(3x-16) =196-3x

*November 6, 2010*

**science**

4.0 N since it's oppo directions so the magnitude of net force is absolute valure of the 2 numbers

*November 6, 2010*

**math**

computer programming stuff n also used on like graphing design stuff

*November 6, 2010*

**math**

first need to change all fraction into same D so 49x over 2(7x+1) can muliply by x over x become 49x^2 over 2x(7x+1. change the third fraction also into same D by mutiplying by 2(7x+1) over 2(7x+1) so becomes 22(7x+1) over 2x(7X+1) then just add n subrract the numerator while...

*November 6, 2010*

**physics**

intial Vy=0 (since it's thrown horizontal) change in y = -29.0m Ay=-9.81 m/s^2 find the time used by equate : change in Y= intial Vy times time +1/2 Ay times time squared so -29.0=1/2(-9.81)t^2 t^2 = .91s so t=2.43s since time used for y is same as x change in x = 1/2 (...

*November 6, 2010*

**physics**

the initial V is the greatest , ignore air resistance

*November 6, 2010*

**phyics**

will it hit? use final velocity of 0 presuming that it came to a halt find the time elasped for it to stop using acceleration = change in v over change in t use the time to find how far both have traveled... yes it will hit it;s an equation of what time used for second car to ...

*November 6, 2010*

**calculus**

given f(x) = sin2x/(xcosx) a) find lim f(x) x->0 B) find lim f(x) x-> pi/4

*October 25, 2010*

**calculus**

given h(x) =kx+1, X<1 (k is constant) X^2, x > and equal to 1 A) find value of k such that h(x) is continous at x=1 B) determine if h(x) is differentiable at x=1

*October 25, 2010*

**calculus**

write the equation (in slope intercept form) of the line perpendiculaer to y=-X/2+1 and tangent to g(x)=3X^5+2X-1

*October 25, 2010*

**Algerbra**

range is value of y so y=3x-2 substitute each following 1, 7, 13, 16 , and 19 into y and solve for x should be the domains x {1,3,5,6,7 }

*October 24, 2010*

**geometry**

since in a triangle 2 sides add together must be greater than 3rd and 2 sides subtract each other must be less than third then the range of 3rd side is : 11-8<X<11+8 x is in open interval of 3 n 19 (3, 19)

*October 24, 2010*

**physics!!!!!! (The questions are actually short)**

if an object's velocity is in the same direction as it's acceleration then the speed is increasingex: dropping a ball,negative velocity n negative acceleration so speed increases opposite direction then object will slow ex: throwing ball upward -velocity is positive ...

*October 24, 2010*

**Spanish**

ella esta ensena en la clase. accent on a of esta and wave on n of esena

*October 24, 2010*

**physics**

thanks

*October 24, 2010*

**physics**

A rocket is fired at a speed of 75.0 m/s from ground level, at an angle of 64.7¡ã above the horizontal. The rocket is fired toward an 11.0 m high wall, which is located 25.0 m away. The rocket attains its launch speed in a negligibly short period of time, after ...

*October 24, 2010*

**physics**

thanks

*October 24, 2010*

**physics**

A volleyball is spiked so that it has an initial velocity of 18 m/s directed downward at an angle of 50¡ã below the horizontal. What is the horizontal component of the ball's velocity when the opposing player fields the ball?

*October 24, 2010*

**precalc**

you need to put this in synthetic division take the coef from power of greatest to least 1 2 -109 -110 and use factors of -110 to try -1 works so (X+1) is a factor of equation rewrite: (x+1)(X^2+X-110) find root of (X^2+X-110) COME TO be -11,10 so factor form is (X+11)(X-10)(X...

*October 24, 2010*

**Physics:Projectile Motion**

wrong

*September 23, 2008*

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