Wednesday

February 22, 2017
Total # Posts: 1,014

**Physical Science**

A hockey puck moving at 28 m/s is caught by an 80.00 kg man who was at rest. The man and puck move together after the collision. The puck's mass is 0.16 kg. What is the final velocity?

*April 12, 2012*

**math**

Find the dimensions of a rectangle with perimeter 40 with the largest area. (hint: Find an equation for area and one for perimeter, use both to find perimeter in terms of one variable)

*March 20, 2012*

**CALCULUS WXMAXIMA !!PLEASE!**

thank you so muchh!

*March 7, 2012*

**CALCULUS WXMAXIMA !!PLEASE!**

y=log(100493/40000*x-1) y=atan(100493/40000*x+1) y=exp(-100493/40000*x+1) Note you will need 2 integrals to represent the area. Approximate the area of the region bounded by the given curves. I can do it with two but kinda struggling over here please helppp!

*March 7, 2012*

**math**

Looking at a table of numbers and there is a pattern starting with the number 501, then shaded numbers every 8th number starting with 509. How do I use place value to describe how the numbers change?

*February 13, 2012*

**7th math**

7x(x+4).... (b+11)2b...

*February 7, 2012*

**7th math**

can you help me with this..../ 8(x-5) -3(w+4)

*February 7, 2012*

**Geometry**

if m<afb= 8x-6 and m<bfc = 14x+8, find the value of x so that <afc is a right angle..

*February 2, 2012*

**Physics**

Nevermind! I got it!

*January 29, 2012*

**Physics**

The treasure map in the figure gives the following directions to the buried treasure: "Start at the old oak tree, walk due north for 490 paces, then due east for 120 paces. Dig." But when you arrive, you find an angry dragon just north of the tree. To avoid the ...

*January 29, 2012*

**Huck Fin**

What is the structure here?

*January 26, 2012*

**Huck Fin**

"Two or three days and nights went by; I reckon I might say they swum by, they slide along so quiet and smooth and lovely. Here is the way we put in the time. It was a monstrous big river down there—sometimes a mile and a half wide; we run nights, and laid up and hid...

*January 26, 2012*

**math**

30 questions are worth 2 and 8 are worth 5

*January 24, 2012*

**math**

518.4 feet long

*January 24, 2012*

**calc**

y = 4x -4 / x^2 vertical asymptotes: ____________________ horizontal asymptotes: ____________________ increasing intervals: ____________________ decreasing intervals: ____________________ relative maxima: ____________________ relative minima: ____________________ concave up ...

*January 24, 2012*

**math**

1. 9y^2 + 24yx + 16x^2

*January 24, 2012*

**Calc**

analaze the graph of y = 2/ (x^2-9) y-intercepts: ____________________ vertical asymptotes: ____________________ horizontal asymptotes: ____________________ increasing intervals: ____________________ decreasing intervals: ____________________ relative maxima: ...

*January 24, 2012*

**physics**

560 m

*January 21, 2012*

**Huck fin**

If you have read Huckleberry Finn before, what was your initial reaction to it?

*January 20, 2012*

**Algebra**

3x + 18 + x = 86 4x + 18 = 86 4x = 86 - 18 x = 68/4 x = 17

*January 18, 2012*

**math**

one, two can't be two fives, equal 10

*January 18, 2012*

**algebra**

12n - 30 = 90 12n = 90 + 30 n = 120/12 n = 10

*January 18, 2012*

**Calculus (Help please)**

Find all the critical numbers for the following function. F(x) = (16 - x^2)^(3/5)

*January 18, 2012*

**Calculus**

Find all the relative extrema of f(x) = x = x3 – 3x2 + 4.

*January 18, 2012*

**Math Q.2**

4.166666666667

*January 12, 2012*

**math**

4|2y-3|-1=11

*January 10, 2012*

**SPANISH**

#1 says/ What stores are in malls there are Mexicans in the malls of America? #2 says/ Where are the young Mexicans to buy cheap clothes and fun? Where are you and your friends? Can bargain there?

*January 10, 2012*

**math**

|3t-2|+6=2

*January 10, 2012*

**math-calculus**

|3|-|9|=-5...ANSWER IS |5|

*January 10, 2012*

**math**

COOOOOOL...THX BROSKI

*January 10, 2012*

**math**

-3|2w|=-12

*January 10, 2012*

**math**

kinetic energy is moving energy, or the energy possessed by an object in motion. potential energy is the the energy possessed by an object during rest. Similarity Think of a roller coaster. The chain pulls the rollercoaster full of people up the hill to the top. On the way up ...

*January 9, 2012*

**geometry**

You are given the measures of two angles, beta and gamma. The three angles of a triangle always total up to 180. alpha + beta + gamma = 180 alpha = 180 - beta - gamma so solve for the measure of alpha You know that gamma is 90 degrees, so you have a right triangle. You can use...

*January 9, 2012*

**math**

Mechanical energy is a kind of energy created by the physical movement or rotation, revolution etc of anything.Since most of the movements done and energy created are done by machines, it is named as mechanical energy

*January 9, 2012*

**Math #Help Meee!!!!!!!!**

|n|+3=7

*January 9, 2012*

**Steve and Reiny**

A tank has the shape of an inverted circular cone with a base radius of 5 meters and a height of 20 meters. If water is being pumped into the tank at 2 cubic meters per minute, find the rate at which the water level is rising when the water is 7 meters deep WELL I HAVE THIS v=...

*January 9, 2012*

**Math (Calculus)**

A tank has the shape of an inverted circular cone with a base radius of 5 meters and a height of 20 meters. If water is being pumped into the tank at 2 cubic meters per minute, find the rate at which the water level is rising when the water is 7 meters deep

*January 9, 2012*

**Math (Calculus)**

A tank has the shape of an inverted circular cone with a base radius of 5 meters and a height of 20 meters. If water is being pumped into the tank at 2 cubic meters per minute, find the rate at which the water level is rising when the water is 7 meters deep

*January 9, 2012*

**math**

No, you can divide 23 by 4 and get 5.75, but you can't split people into 3/4's

*January 9, 2012*

**math**

So a write a word problem? Esna had bought wanted to buy stickers. Esna sister has 15 stickers and Esna always wants to have 3 times as much as the sister. How many stickers did she buy?

*January 9, 2012*

**Calculus (Help please)**

WELL I HAVE THIS v=1/3pi*r^2h v=1/3pi*r2(4r) v=4/3pi*r^3 dv/dt=4pi*r^2 2=4pi(7/4)^2 2=49pi/4 * dr/dt dr/dt= 8/49pi = 0.052 meters per minute

*January 9, 2012*

**Calculus (Help please)**

is the answer 8/49pi= 0.052 meters per minute

*January 9, 2012*

**Calculus (Help please)**

A tank has the shape of an inverted circular cone with a base radius of 5 meters and a height of 20 meters. If water is being pumped into the tank at 2 cubic meters per minute, find the rate at which the water level is rising when the water is 7 meters deep

*January 9, 2012*

**Help Math**

Thanks Steve

*January 9, 2012*

**Help Math**

A circular pulley with a radius of 10 cm is turning at 12 revolutions per minute. How fast is a point on the edge of the pulley rising when it is 5 cm higher than the center of the pulley?

*January 9, 2012*

**5th grade math**

8/12 and 9/12

*January 9, 2012*

**social studies**

A limited government is a government that cannot interfere with personal liberties and individual rights much because it is against the law

*January 9, 2012*

**math (Calculus)**

A circular pulley with a radius of 10 cm is turning at 12 revolutions per minute. How fast is a point on the edge of the pulley rising when it is 5 cm higher than the center of the pulley?

*January 9, 2012*

**help ss !!!!!!!!!!!!!!!**

I believe 1 is b and 2 is b as well

*January 9, 2012*

**6th grade math-ms. sue**

The Control is something you kept the same. There is not enough information for me to say what exactly what it is. For example, if you used the same wheel bearings the entire time that would be the control.

*January 9, 2012*

**calculus**

A spherical balloon is leaking air at 2 cubic inches per hour. How fast is the balloon's radius changing when the radius is 2 inches.

*January 9, 2012*

**math (Caluclas)**

Oh okay. I understand that, i was just not understand where the 9 came from, but i see now. Thank you both

*January 9, 2012*

**math (Caluclas)**

Sorry about that Reiny. I have a quick question though, where does the 9 come from?

*January 9, 2012*

**math (Caluclas)**

A spherical ballon is leaking air at 2 cubic inches per hour.l How fast is the ballons radisu chancing when the radisu si 3 inches.

*January 9, 2012*

**4th grade Math Help**

Nope, Because 23 * 3 = 69 and Mr Brooks has only 66 acorns

*January 8, 2012*

**adv. math**

I NEED THIS ANSWER FAST!!!

*January 8, 2012*

**adv. math**

How do you show work for this problem, in a percent equation form?~ $3680 at 6.75% for 2 1/4 years

*January 8, 2012*

**Physics**

You would convert 290 miles into 1531200 ft which then the answer would be a531200 ft/sec

*December 28, 2011*

**Physics**

Fe = mg = 645 kg * 9.8 N/kg = 6321 N. = Force of elevator. a. P = F * d/t = 6321 * 2.75 = 17382.75J That is the increase in potential, now we must add the increase in kinetic energy, which is: Ws = 1/2 m(Vf)^2 - 1/2 m(Vi)^2 Ws = 1/2 645kg(1.26m/s)^2 - 0 Ws = 512.001J adding ...

*December 14, 2011*

**math**

my brain hurts

*December 7, 2011*

**math**

He saved $2,500 in April. He earned $5,000 in May. Thus he had a total of $7,500 Total spent in May - $4,200 + $2,500+X X= Amount saved in May Thus total = Amount spent + Amount saved Thus total = $4,200 + #2,500 + X + X $7,500 = $4,200 + $2,500 + 2X Solve for X $7,500 = $6,...

*December 7, 2011*

**math**

a square room has sides that each measure 5 feet.How many square feet of carpet is needed to cover the rooms entire floor?

*December 5, 2011*

**calculas**

A car braked at a constant deceleration of 45 ft / s2, producing a skid mark measuring 105 feet before coming to a stop. How fast was the car travelling when the brakes were first applied?

*December 4, 2011*

**MATH!!!! 7th**

nope

*December 1, 2011*

**MATH!!!! 7th**

yeah its the question i need to know what the x is if the mean is 112

*December 1, 2011*

**MATH!!!! 7th**

100,121,105,113,108,x; mean 112

*December 1, 2011*

**Physics**

A 0.165-kg ball, moving in the positive direction at 10 m/s, is acted on by the impulse shown in the graph below. What is the ball's speed at 4.0 s?

*November 30, 2011*

**physics**

Early skeptics of the idea of a rotating Earth said that the fast spin of Earth would throw people at the equator into space. The radius of Earth is about 6400 km. Show why this objection is wrong by determining the following information. a.) Calculate the speed of a 103-kg ...

*November 30, 2011*

**SOCIAL STUDIES!!!**

in what ways did whitneys system improve products

*November 28, 2011*

**8th grade math**

Add up the ratios 3:7:17 to get 27. Since ratios can be scaled, we can scale the ratios to have a sum of 81 by multiplying the ratios by 3,i.e. 3:7:17 ß 9:21:51.

*November 28, 2011*

**SOCIAL STUDIES!!!**

what was eli whitneys main contribution to manufacturing

*November 28, 2011*

**SOCIAL STUDIES!!!**

how did slater and lowell contribute to industry in the united states?

*November 28, 2011*

**social studies**

how did turnpikes,canals,and railroads affect the way that people in different states interacted

*November 28, 2011*

**social studies**

thx :-)

*November 28, 2011*

**social studies**

why did railroad construction end canal building

*November 28, 2011*

**math**

two horses gallop off in the sam direction. Trigger travels25 kilometers per hour. Silver travels 30 kilometers per hour. How long before the horses are 3 kilometers apart?

*November 21, 2011*

**Physics**

4.25sin40= Y component 4.25cos40= X component

*November 17, 2011*

**english**

the stems measure a foot in diameter=transitive people use bamboo in many ways=transitive in japan the hollow stems serve as water pipes= transitive

*November 16, 2011*

**algebra**

Eight times the opposite of a number is 36 less than the product of 4 and the number. What is the number?

*November 16, 2011*

**calculus**

Find the amount of a continuous money flow in which $175 per year is being invested at 8%, compounded continuously for 20 years.

*November 15, 2011*

**math**

integrate (using substitution). (6x^5)(e^(x^6))dx

*November 14, 2011*

**Stats**

84 and18.2 percnt not likely but 11.2 is likely

*November 9, 2011*

**geometry**

Point A is the incenter of (triangle) PQR. Find each measure. ARU AU QPK

*November 8, 2011*

**GEOMETRY**

LINE CD IS MEDIAN OF TRIANGLE ABC AND M IS THE CENTROID.MMIF CM = 14 WHAT IS CD

*November 7, 2011*

**geometry**

line CD is a median of angle ABC and M is the centroid, If CM = 14 what is CD

*November 7, 2011*

**physics**

An airplane flies north at a constant speed for 6h and covers a distance of 2400km. What is the plane's velocity? The acceleration?

*October 19, 2011*

**pre-calculus**

A developer wants to build homes on a rectangular plot of land 4 kilometers long and 3 kilometers wide. In this part of the city, regulations require a greenbelt of uniform width along two adjacent sides. The greenbelt must be 10 times the area of the development. find the ...

*October 14, 2011*

**Math (Translate each sentance into a equation)**

Translate this sentence into an equation. Craig's age increased by 21 is 68 . Use the variable c to represent Craig's age.

*October 11, 2011*

**Physics**

A shell is fired with velocity having horizontal and vertical components ux, uy. At the highest point of it's path the shell explodes into two fragments of mass m1, m2, which separate in a horizontal direction. The explosion generates kinetic energy E. Show that the ...

*September 22, 2011*

**fith grade math**

this summer it has rained only 1/4 as much as last summer . 12 inches of rain fell last summer. what amount of rain has fallen this summer

*September 19, 2011*

**physics**

Hello, can anyone help me this problem? The author's cat enjoys chasing chipmunks in the front yard. In this game, the cat sits at one edge of a yard that is w = 32 m across (see figure), watching as chipmunks move toward the center. The cat can run faster than a chipmunk...

*September 16, 2011*

**geometry**

find other endpoint of line segment with a given endpoint and midpoint endpoint (2,1) Midpoint (-7, 2)

*September 12, 2011*

**math**

i think it's B but i'm not sure

*September 6, 2011*

**math**

Max has 12 pairs of socks. Of them, 6 pairs are blue, 3 pairs are brown, and 2 pairs are white. Max wants to know what fraction of the socks are blue or brown. How can he find the numerator? a) Add 6+3+2 b) Add 6+3 c) Subtract 11 from 12 d) Subtract 9 from 12

*September 6, 2011*

**math**

you download 12 new songs to your MP3 player. then you delete 5 old songs. write each amount as a integer.

*September 6, 2011*

**Chemistry**

Mass of evaporating dish = 41.36 g Volume of saturated NaCl solution = 10.0 mL Mass of evaporating dish and NaCl = 44.50 g Mass of sodium hydrogen carbonate = 0.49g What is the morality(M) of the sodium chloride solution if you prepare in 1 liter of solution? How do you ...

*August 30, 2011*

**Chemistry**

Why are covalent bonds weak in the presence of heat but strong in the presence of water?

*August 28, 2011*

**AP Geography**

That's the only reason I've turned to this site for help. I burnt out on 4 other sections like this and I need help. Ugh.

*August 16, 2011*

**AP Geography**

Oh yes, I do appologize, I have to deal with a reeeeal stupid confusing text book. I have NO idea what Near Abroad is, I didn't know if it was some term I wasn't use to hearing or what. I've been using Russia as a whole country compared to Europe & it's ...

*August 16, 2011*