Science & Mathematics - 25 January 2007

2007-01-25 03:57:10 · 7 answers · asked by jeffrey biter 2 in Biology

Question 3:
Robert drove to the mall, which is twelve kilometers away. He left at 2:57 and arrived at the mall at 3:19. What was his average driving speed?





Remember to convert to hours!
Round to a whole number
kph
Question 4:
If the base of a rectangle is 17.8 cm and the area is 357.78 cm2, what is the height of the rectangle?





Enter a decimal
cm
Question 5:
If the area of a rectangle is 646.84 mm2 and the height is 31.4 mm, what is the perimeter of the rectangle?





mm
Question 6:
If the area of a parallelogram is 391 mm2 and the height is 23 mm, what is the length of the base?





mm
Question 7:
If the base of a rectangle is 1 3/5 cm and the area is 14 18/25 cm2, what is the height of the rectangle?





Enter a decimal.
cm
Question 8:
If the base of a rectangle is 7 4/5 m and the perimeter is 16 1/10 m, what is the height of the rectangle?





Enter a fraction.
m
Question 9:
What is the area of a triangle with base 11 cm and height 21 cm?





Enter a decimal.
cm2
Question 10:
If the area of a square is 49 square inches, find the length of one side.





in
Question 11:
If the perimeter of a rectangular bathroom room is 22 meters and its length is 6 meters, find its width.





m
Question 12:
If you drive 350 miles in 7 hours, what is your average speed?





mph
Question 13:
A plane flies from Des Moines, IA to Los Angeles, CA, a 1435-mi trip, in 5 hours. What is the plane's average speed?





mph
Question 14:
Use the formula F = (9/5)(C) + 32. If it is 59 degrees Fahrenheit outside, what is the temperature in Celsius?





degrees Celsius
Question 15:
A jogger and a walker leave the same location at the same time and travel on the same road. The walker moves at a constant speed of 6 mph. At the end of 2 hours the jogger is 8 miles ahead of the walker. Find the speed of the jogger. Use a chart to help you organize the information.





mph
Question 16:
Carol invests $2500 for one year. She invests part in a bond paying 5 percent and the rest in a stock paying 3 percent. If the total interest received is $95.00, how much was invested in the bond? Use a chart to help you organize the information.





$
Question 17:
For Question #16, how much was invested in the stock?





$
Question 18:
A plane flies from Portland, ME to El Paso, TX with an average speed of 303 mph. A car drives the same distance and leaves at the same time, averaging a speed of 50 mph. The plane arrives in El Paso 35.42 hours before the car. How far is it from Portland to El Paso? Use a chart to help you organize the information.





miles
Question 19:
The Party Bank pays four percent simple interest per year on deposits. Connor was paid $1,104 of interest over a four year period. How much did he originally deposit?





$
Question 20:
Alexis left a location at 8 a.m. The channel three news sent a helicopter from the same location eight hours later to catch up with Alexis. The helicopter's average rate of speed is one hundred fifty mph. If Alexis traveled at 53 mph, how far did she drive?





Enter a decimal rounded to the hundredths place.
miles

2007-01-25 03:55:37 · 8 answers · asked by me1026 1 in Mathematics

2007-01-25 03:55:34 · 16 answers · asked by Alicat 6 in Botany

For many years, scientist have used the Richter scale to measure the magnitude or strength of earthquakes. They now use the moment magnitude scale to measure the strength of larger earthquakes. Compare & contrast both types of scales.

2007-01-25 03:54:05 · 4 answers · asked by Bree 1 in Earth Sciences & Geology

HI. I'm doing research right now using MRI. The problem is I'm stuck. I'm very very stuck and don't know how to continue. I'm not managing to do the same as the articles I've read. And yes I have e-mailed the authours but get no response. I've emailed tons of people asking for help. But I remain very much stuck. I need to do something (called deconvolution) in order to continue. I just don't know how to do it and go further. What do you do when you get stuck in research?

2007-01-25 03:53:16 · 4 answers · asked by Peter R 2 in Physics

2007-01-25 03:53:06 · 6 answers · asked by joey.alex 1 in Astronomy & Space

embryo, would you consider having the "treatment" if you were trying to conceive a child? Just wondering what people's attitudes are about such an ethical problem.

2007-01-25 03:52:33 · 14 answers · asked by Anonymous in Biology

I'm confused. I DO know the facts and it dosen't make sense to me. IF God didn't crete the hevans and earth, how does matter exist? I don't get it.
Also how did DNA form, my Mac computer didn't form by lightning hitting a pile of garbbage. Did it? If I told you that you would say I was an idiot. Yes you would don't lie.
I would like real awnsers to my questions please and NOT discrimantion of creation. I do beleive in creation, but evolution makes sense because God COULD have breathed life on the world. But, where did all the matter come from?

2007-01-25 03:52:15 · 15 answers · asked by Anonymous in Biology

2007-01-25 03:51:23 · 10 answers · asked by Anonymous in Chemistry

Morning Star Venus. Thanks, to let me know your opinion if you know the answer.

2007-01-25 03:50:54 · 3 answers · asked by Nicolette 6 in Astronomy & Space

2007-01-25 03:48:53 · 5 answers · asked by temmie 1 in Chemistry

about the branch and about the skills u have learnt in ur engineering school.

2007-01-25 03:48:09 · 2 answers · asked by ABHISHEK 1 in Engineering

2007-01-25 03:47:43 · 5 answers · asked by Anonymous in Chemistry

I'm given a MEAN (83) and a STANDARD DEVIATION (10).

Then it asks where 95% of the distrubution is to fall?

The distrubution is mound-shaped.

How can I figure this out? I have 5 more problems like it and I can't get any of them. I've only been taught to get the 75%, 88.9%, and 93.5% distrubutions AND I've never been taught how to take the SHAPE of the distrubution into consideration.

I can't find the answers in the book. :-/

I also have to figure out the opposite of how to find the PERCENT if the shape is known and I have the numbers it falls between.

Any help is great.

2007-01-25 03:46:46 · 3 answers · asked by Anonymous in Mathematics

2007-01-25 03:45:20 · 6 answers · asked by kar_2022 1 in Engineering

2007-01-25 03:44:57 · 8 answers · asked by Justin 2 in Geography

2007-01-25 03:44:34 · 2 answers · asked by Justin 2 in Geography

I mean to say, I forget how to do this basic math and arrive at 4.

2007-01-25 03:44:26 · 14 answers · asked by RogerDodger 1 in Mathematics

2007-01-25 03:44:04 · 3 answers · asked by Mandy 1 in Medicine

2007-01-25 03:43:55 · 23 answers · asked by Mark T 1 in Astronomy & Space

2007-01-25 03:43:29 · 9 answers · asked by Justin 2 in Geography

2007-01-25 03:42:19 · 2 answers · asked by go2crt1 1 in Engineering

Help me understand this:

Someone wrote that the probability of winning the top prize of one million dollars in "Deal Or No Deal" is 1/56.

I don't see why this is so.

I think you either win or fail to win the million dollars right at the beginning of the game.

And, at the beginning of the game, there are 26 cases. So, the probability that you will win 1 million is 1/26.

So, if you decide to play the game to the very end and say NO DEAL to every offer, then you win 1 million dollars. There is no other way to win it.

The fact the you chose 1 million dollars in the beginning is independent of what happens after that. Opening the other cases does not put you at risk of losing the case that you chose. Your case doesn't change.

So, how is the probability of winning 1 million not 1/26?

Remember, the banker will never offer you 1 million. If you have 2 cases left and one is the case with 1 million, the banker may offer you something like 600,000.

Comments??

2007-01-25 03:40:33 · 10 answers · asked by JiveSly 4 in Mathematics

I have been taking bupropion SR for quitting smoking for three weeks. two days ago I changed my dosage from 150 to 300mg with my doctor's advice. Last night I experienced pretty bad itching, first in my hands and then all over. I woke up today with milder but present itching. My doctor says I should stay on the drug for another 24-36 hours, but I am afraid that it will get worse. So many people online have reported that it gets worse. Should I drop down to 150, stop altogether or should I follow my doctor's advice and wait and see. Also, is there anything I can take for the itching? HELP :)

2007-01-25 03:40:23 · 1 answers · asked by jocelyn 1 in Medicine

2007-01-25 03:38:51 · 4 answers · asked by whoknows 1 in Physics

Yea, sorry, I forgot alot of math after I got out of school.

2007-01-25 03:38:19 · 13 answers · asked by tasai_yume 1 in Mathematics

say 77% of sunshine hours so how do i work it out
77/100? help

2007-01-25 03:38:11 · 2 answers · asked by karen h 1 in Geography

2007-01-25 03:35:30 · 2 answers · asked by chickadeqt 1 in Mathematics

I'm curious if I'm doing this problem right, and I have a question at the end of it too.

Time (sec)/ Position (meters)
0s/0.0m
1s/3.1m
2s/6.3m
3s/9.3m
4s/12.2m
5s/15.5m
6s/18.5m

a) It asks me to mark it all on a graph paper which I did, and then asked "What do you notice about the spacing of positions? I put "The spacing stays relativly the 3m for each second. It then asks why. Im not sure what a good answer here would be but I put that I think it is because the object that is in motion is set to go a constant speed. I dont think thats a good answer though, does anyone know something better?

b) I then have to calculate the speed of the object at each intervals, I used average velocity and got:
0-1s: 3.1m/s
1-2s: 3.2m/s
2-3s: 3.0m/s
3-4s: 2.9m/s
4-5s: 3.3m/s
5-6s: 3.0m/s

Do those look correct to everyone?

c) It says to plot a function of time and to draw a best-fit line through the points..how do I draw a best-fit line? It says not to connect the dots

2007-01-25 03:35:24 · 1 answers · asked by Erin C 1 in Physics

I just finished my last ever Algebra course, yet I have made it almost 30 years without ever needing to know most of the information covered in the class. I got an A in the class, but it has left me wondering...Who uses Algebra and why does everyone need to learn it if not everyone uses it?

2007-01-25 03:34:05 · 13 answers · asked by kaligrl77 2 in Mathematics