Mathematics - 29 November 2007

2007-11-29 14:35:13 · 3 answers · asked by none 1

The distance from Homeplate to the leftfield wall is 418.75 feet. baseball player hits the ball 3 feet above homeplate. PeeWee Reese is playing shortstop and he jumps and reaches 10 feet into the air but the ball clears his mit by a few inches. The ball travels out towards leftfield and goes over the wall by a foot and is a homerun. The left field wall is exactly 6 feet. The height of the ball varies quadratically with the distance from homeplate. a Baseball Diamond is a square with the sides 90 feet. Find a quadratic function describing the ball's homerun and determine the maximum height of the baseball.

2007-11-29 14:33:17 · 2 answers · asked by Melissa 1

2007-11-29 14:32:53 · 5 answers · asked by fulleye22 1

2007-11-29 14:32:31 · 9 answers · asked by Anonymous

Solve:
A turbo-jet flies 50 mph faster thana super-prop plane. If a turbo-jet goes 2000 mi. in 3 hr less than it takes the super-prop to go 2800 mi. find the speed of each plane.

2007-11-29 14:30:07 · 2 answers · asked by Anonymous

2007-11-29 14:26:48 · 1 answers · asked by llamaman 2

how do you graph y=25-x^2

you don't have to actually graph it, but explain what the steps are and what you have to do.

2007-11-29 14:23:40 · 3 answers · asked by yellowducks 1

What level math are you in? alg 1, alg 2, geometry, trig, alg 3, calc, etc, etc.

2007-11-29 14:21:49 · 11 answers · asked by goldenret35 2

Find the
-intervals during which the function is concave up and concave down.
-The x-coordinate for the inflection point
-the absolute and minimum x values
for the function:
f(x)=((5x-8)^5)^1/3 defined on the interval [-5, 5]

2007-11-29 14:20:32 · 2 answers · asked by Anonymous

Using first and second derivatives, solve this question:

A truck is to be driven 300 miles on a freeway at a constant speed of X mph. Speed laws require X to be greater (or equal) to 30 and less than (or equal to) 60 MPH [so speed needs to be 30-60 mph].

Assume that the fuel cost 60 cents per gallon (yea I wish) and it is consumed at the rate of:

2 + (x^2)/600 gallons per hour. If the driver's wages are 8 dollars per hour and if he obeys all speed laws, find the most economical speed.

If you can please show your work when solving this, it will be much appreciated =] THE ANSWER IS 60 MPH, but I don't know how to get there.

Thanks =]

2007-11-29 14:15:05 · 3 answers · asked by goldenret35 2

Find the displacement and distance traveled by the moving object in the given interval.
a(t)=t^1/2 (ft/sec)/sec, v(0)=-18/ft/sec from t=0 to t=16 sec

2007-11-29 14:13:34 · 1 answers · asked by sleepyhead 1

Four children: Cindy, Tim, Sally, and Scott whose last names are Barlet, Brown, Hughes, and Miller are each going on a family vacation. Theor destonations are Florida, South Dakota, Colorado and California and they are traveling by bus, plane, van, or car. Read the following clues to determine the first and last name the destination and the means of transportation for each child, show your work, explain your answer.

1. The Hughes girl went by car.
2. The family going to South Dakota went bye van.
3. Sally went to California
4. The miller boy went bye bus.
5. Scott went to Colorado.
6. Neither the car, nor the Barlets nor Scott went to California.
7. Tim's last name is not Miller.

2007-11-29 14:07:11 · 2 answers · asked by Anonymous

Solve:
A turbo-jet flies 50 mph faster thana super-prop plane. If a turbo-jet goes 2000 mi. in 3 hr less than it takes the super-prop to go 2800 mi. find the speed of each plane.

2007-11-29 14:05:29 · 1 answers · asked by Aimee R 1

could someone show me how to solve these 4 problems
i'm lost to the whole ratio of formulas
so far i've found that the area of a cone is A=(PI*r^2)+(PI*r*s)
i think i should divide that by 2 but i dont think its as easy as that.

here's a scan to show all of what you need to know
http://i8.photobucket.com/albums/a33/ChaoticPYRO/scancalc.jpg

2007-11-29 14:04:29 · 1 answers · asked by Anonymous

and wats the anwser for 3 to the 0 power * 5 to the 2nd power

2007-11-29 14:04:23 · 38 answers · asked by Rere R 1

During the first part of a canoe trip, Alex covered 60 km at a certain speed. He then traveled 24 km at a aspeed that was 4 km/h slower. If the total time for the trip was 8 hr, what was the speed on each part of the trip?

2007-11-29 14:02:48 · 3 answers · asked by Aimee R 1

Okay I have a problem with this problem...I anyone can...Please Help Me!!!

1. Using either method (washer or cylindrical shells) to find the volumes of the solid formed by rotating the region bounded by the curves; x = 1 - y^(4) and x = 0 about the line x = 2.

Note: also please provide the x - and y - intercepts. Thanks in Advance...

2007-11-29 14:02:15 · 1 answers · asked by Anonymous

The number of times a cricket chirps in a minute is a function of the temperature. You may use this formula:

n = .25n + 40

to determine the number of chirps, n, a cricket makes in a minute when the temperature is f degrees in fahrenheit. If you want to estimate the temperature by counting cricket chirps, it is easier to use the following form of the equation:

t = .25n + 40

I NEED HELPPP!

2007-11-29 13:59:27 · 1 answers · asked by Anonymous

2007-11-29 13:59:17 · 1 answers · asked by Anonymous

well i have a math problem and it says carey rode his bicycle miles in 1 and a half hours what was his average speed??

i need an answer but most importantly how to do it .

2007-11-29 13:57:35 · 2 answers · asked by VICTOR P 2

2x + 24y = -176
11x + 6y = 40

2007-11-29 13:55:06 · 4 answers · asked by derrim2000 1

how would you solve: 9(1.03)^t=11(1.02)^t

2007-11-29 13:54:13 · 4 answers · asked by Anonymous

2007-11-29 13:51:57 · 6 answers · asked by Anonymous

*form a quadratic equation whose roots are 1/2(2+i) and 1/2(2-i)
*determine the nature of the roots of the quadratic equation 4x2+12x+9=0
*find the solution set: x/x+1 +5/8 = 5/2(x+1) + 2/4
*word problem: a jet plane traveling at a rate of 550 mph overtakes another plane that had a 3 hour head start and is travelling at a rate of 250 mph. how far from the starting point does the jet overtake the other plane?
*give the function of least possible degree whose roots are 1+2i, 1-2i, 2+-square root of 5, -3
*solve the linear system by Cramer's rule: x+3y=7 , y+z=5 , 2x-4z= -10
*word problem: a cyclist traveled a certain distance at her usual speed. if her speed had been 2mi/hr faster, she would have traveled the ditance in 1hr less time. if her speed had been 2mi/hr slower, she would have taken 2hrr longer. find the distance traveled and her ususal speed.

-p.s can anyone solve this..? PLEASE!

2007-11-29 13:44:47 · 2 answers · asked by jazZ 1

These are the math terms: ngttnae and nfifcoar

2007-11-29 13:44:01 · 4 answers · asked by Patches 2

I need to know how to find "c" and "b" in the following equation: y=a sin(bt-c)+d.

I know that a = radius, d = radius + feet off ground, but I do not know how to find B or D. Also a cosine equation will work so please tell me how to do the following problem:

Ferris wheel with a radius of 125, it is 133 from center of ferris wheel to ground. Does a revolution every 60 seconds.

2007-11-29 13:43:42 · 1 answers · asked by Anonymous

a) evaluate the antiderivative of f(t)= 1/(t^(2)+1)?

and...

b) evaluate the antiderivative of f(x)= x+ (4/sqrt(x))?

and...

c) find the antiderivative of f(x)= e^(t) + e^(5)?

2007-11-29 13:41:11 · 2 answers · asked by wildcat11 1

2007-11-29 13:35:44 · 4 answers · asked by derrim2000 1

im really confused on how to do this problem. its says- there are four consecutive odd integers. the sum of the first and the second numbers is 96. what are the integers?

im pretty sure you have to do let statements. so i made four.
let x+2=1st number
let x+4=2nd number
let x+6=3rd number
let x+8= 4th number

it says odd integers, and im pretty sure i remember learning that odd integers were the same as even integers. correct me if im wrong.

but then it says the sum of the first and second. which i can do

x+2+x+4=26

but i dont understand how doing that problem can help you figure out all four of the integers. does anyone know?

2007-11-29 13:35:32 · 3 answers · asked by Anonymous

math,

2007-11-29 13:34:14 · 1 answers · asked by amira b 1