Sunday
April 20, 2014

Posts by Daniela


Total # Posts: 75

Math
a trainer for a professional football team keeps track of the amount of water players consume throughout practice. the trainer observes that the amount of water consumed is a linear function of the temperature on a given day. the trainer finds that when its 90 degrees the play...

Physics
A ball player catches a ball 3.33s after throwing it vertically upward. a) with what speed did he throw it? b) what height did it reach?

Phisics
An elastic cord vibrates with a frequency of 3.5Hz when a mass of 0.62kg is hung from it.What is its frequency if only 0.40kg hangs from it?

college algebra
?

Math
what does this equal 48X10

ap world history
Thanks so much for the help!

ap world history
The questions certainly helped. I figured that's what they were asking, I just wasn't completely sure. And the extent, would be basically where it extended to?

ap world history
What was the nature and extent of the Umayyad Empire? How do you answer this question? What's an empire's nature? HELP PLEASE!

math
3x^2+2xy+y^2=2 then the value of dy/dx at x=1 is?

Statistics
A physical fitness association is including the mile run in its secondary-school fitness test. The time for this event for boys in secondary school is known to possess a normal distribution with a mean of 460 seconds and a standard deviation of 40 seconds. The fitness associat...

math
The second of two numbers is 6 times the first. Their sum is 77. Find the numbers.

physics
an object 12 kg of mass slides over a surface with horizontal force of 75 N. The friction force is of 17 N. Determine the acceleration of the object.

physics
during a water show the dolphin made a vertical jump of 2.5 m. Determine: a. The initial velocity they need to make that jump. b. the time it takes the dolphin to reach the maximum height. The total time the dolphin remains in the air.

chemistry
To form a gas, the molecules of a liquid must overcome the intermolecular forces of attraction that bind them in the liquid state. As these forces of attraction become stronger, what happens to the boiling point? the boiling point:increases, decreases, or remains constant

physics
You have three metals - lithium, aluminum, and mercury. Their work functions are: 2.30, 4.10eV, and 4.5eV respectively. Light with a frequency of 1 x 10^15 Hz is incident on all three metals. Determine (a) which metals will emit electrons and (b)the maximum kinetic energy for ...

physics
thanks!

physics
How does an incandescent light bulb produce light?

physics
The sun radiates energy at the rate of 3.92x 10^26 W. (a) What is the change in the sun's mass in one second? (b)How much mass does the sun lose in the lifetime of your average earthling (say, 75 years)?

physics
The sun radiates energy at the rate of 3.92x 10^26 W. (a) What is the change in the sun's mass in one second? (b)How much mass does the sun lose in the lifetime of your average earthling (say, 75 years)?

Math
a section of a stained-glass window is shaped like a parallelogram.Its base is 6.5 inches,and its height is 4 inches.How much glass is need to cover the section completely?

arithmetic
What makes the mode decrease In math?

math
Suppose the mean height of a population is 65 inches with a standard deviation of 1.5 inches. What is the z value for a height (x) of 67 inches?

College Physics
just for others who are looking for this answer: You have to convert 24Cal/hr into J/s since 1Cal=4190 Joules 24Cal/hr x 1hr/3600s x 4190 J = Q/t Then plug into formula stated above to get a final answer of 0.026858974 = 0.027 (2 sigfigs)

Roper
You've made the finals of the Science Olympics! As one of your tasks, you're given 1.1 g of copper and asked to make a wire, using all the metal, with a resistance of 2.0 (ohms). Copper has a density of 8900 kg/m^3. What length will you choose for your wire? What diame...

Chemistry
Ideal law 0.0099 mol

physics
8x10^-5N Is the right answer

physics
8x10^-5N

Calculus
A baseball card that will be worth $100,000 in 15 years currently sells for $66,698. What constant interest rate does that correspond to?

science
WHAT ELEMENT OR ATOM INTERACTS WITH CARBON

physics
its 4/3, bob, not 4.3. but the rest is right

4th grade
What is the independent variable?

child growth development
I think is B

child growth and develpoment
is B

health international
What are the economics in India(poverty level), Demographic( includes social indicators) and health includes mortality Learn what they mean

12th grade
A thimb is 23.0 cm from a concave mirror. The focal point is 9.0 cm. Where is the image located?

math
what goes first second and third one nineth five sixth or seven eighth

Childcare
my answer is C

childcare
the corect answer is D

science
As of July 2004 the population of the us was 293,027,571. If more than half of these people live within 80km of an ocean, about how many ppl live within that distance?

algebra highschool
Factor completely 8c2 - 26c + 15

math
Factor completely what does that mean 25a2 - 30a + 9

social studies,word unscrambler
Rbineaellto

Child Psychology
yes the answer is B

science
Mice are famous for their ability to multiply at break make speed the type of mouse we have here gives birth once a month. Birthing 12 babies each time, baby mice mature and can give birth two months after they are born, you picked up one of these darling baby mice at the pet ...

Financing and Budget
the answer is D

Financing and Budget
the answer is D

Financing and Budget
C is my answer

Financing and Budget
D.

psychology
the answer is b),I am very soure.

psychology
wrong answer

psychology
wrong answer

math
Frank's car can travel 30 miles per gallon of gas. Janet's car can travel 20 miles per gallon of gas. Frank and Janet drive their own cars and they leave for a trip at 8.00AM on Friday. They arrive at their destination at 2.00AM the next day. Saturday, after driving at...

math
subtract one form each side so -3-1 is -4 divide that by -8 negatives cancel each other out n c=0.5 plug it inot the equation to check -8 times 0.5=-4 plus 1=-3

math
u sure its -e? kinda impossible

math
answer is b.14 add 7(x) + 3(y) + 14(try each multiple choice;0)gives u 24 divided by 3 tada 8!!!

science
1.cells are the building blocks of all living things

Science
perfect!!!!

7th grade math
268.7% 1.5% 64% multiply the decimal by 100 or move the decimal place 2 spaces to the right 0.68=68%

AP World History
i read three of the 4 websites. forth didnt work and now i understand the concept of a thesis statement but it seems my topic is befuddling. there are 8 documents 5 of them think technology or crafting tolls is for the poor and "vulgar" people while three documents r...

AP World History
prompt- Using the documents,analyze Han and Roman attitudes toward technology, identify one additional type of documents and explain briefly how it would help your analysis. thesis?-Rome and Han china had similar attitudes regarding technology, high ranking officials think cra...

AP World History
well the DBQ essay is- using the documents, anaylze Han and Roman attitudes toward technology, identify one additional type of document. what confuses me is grouping the documents i no a group is more than one and they need to be related but im in the ib program and i have thi...

AP World History
i am so lost on how to write a thesis statement, i have to write a DBQ essay by tomorow comparing rome and han china technology!! i hate this she(teacher) turned every thesis i wrote for other essays :(

conversion
how do you convert ml to L g to kg mg to g and all that stuff HELP!!

acrostic of motion
write an acrostic about motion

Math (Grade 12 Data Management)
10 people are to be seated at a rectangular table for dinner. Tanya will sit at the head of the table. Henry must not sit beside either Wilson or Nancy. In how many ways can the people be seated for dinner?

math
what is the pattern to 3,5,7,11,13,17,23,29

english
what issues does the novel strange objects written by gary crew raise?

math
WHAT IS A SQUARE?

chemistry
how does a hydrate form? Generally water adds to a metal ion to the d,s, and or p orbitals in which the metal acts as a Lewis acid. I can reword that somewhat if you haven't studied about Lewis acids.

Algebra
last one of my problems :-) solve: square root of x-1=x-3 This is an impossibility. there must remain any mistake within the problem

Algebra
solve: 3 6 ____ = _____ x-1 x+2

Algebra
One number is 3 times another. If the sum of their reciprocals is 4, find the two numbers. __ 15 this is supposed to be 4 over 15 Let the smaller number be x. The two numbers are then x and 3x. You have only one unknown now. 1/x + 1/(3x) = 4 4/(3x) = 4 1/(3x) = 1 3x = 1 x = 1/...

Algebra
sorry clicked wrong button. solve: 9 -1=x-11 ____ _____ x-5 x+5 these are supposed to be fractions Your equation is illegible, and can be interpreted too many ways. Try writing it on a single line, using parentheses for clarity and / for fractions

Algebra
Here are some more I have problems with. solve: 9

Algebra
Hi I am taking my final right now and I have a few problems I am stuck with, can you help me? 1. (x-3y)(x squared+3xy+9y squared) 2. (x+2)(x-2)(x-3) they both need to be multiplied thanks I will critique your thinking, if you post it. This is your final... it makes no sense! w...

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