Thursday
July 31, 2014

Posts by lulu


Total # Posts: 206

math
Kyle got in his car and started driving toward his grandmother's house. After driving for 1 hour and 47 minutes, Kyle took a break for 31 minutes to have a snack. Then Kyle drove 43 minutes and finally arrived at his grandmother's house at 4:12 P.M. What time did Kyle ...

Math (Functions)
What are some equivalent expressions of tan170?

Math
David drew a scale drawing of a table.The real table is 12 feet long.I measured out in inches that the height was 1/2 and the length was 2.But my question is What scale did he use?

math
When James drove to a concert last night, it took him 3 hours and 30 minutes. He averaged 60 miles an hour on the way there. How far did he drive one way?

physics
An oceanic depth-sounding vessel surveys the ocean bottom with ultrasonic waves that travel 1530 m/s in seawater. How deep in meters is the water directly below the vessel if the time delay of the echo to the ocean floor and back is 6.8 s?

Math
The Treasury Department auctioned $30 billion in three-month (13-week) bills in denominations of ten thousand dollars at a discount rate of 9.227%

Math
Molly Ellen, bookkeeper for Keystone Company, forgot to send in the payroll taxes due on April 18. She sent the payment November 8. The IRS sent her a penalty charge of 8% simple interest on the unpaid taxes of $5,900. Calculate the penalty. (Remember that the government uses...

algebra
idk

English
Which is the better strategy for reading comprehension?

anatomy & psysiology
Compare the sensory pathways to the brain for gustatory and olfactory sensations.

chemistry
so it would be 27500 metric ton * 1 metric ton/1000kg *1kg/1000g*1mol/58.93g giving you 466.655 cents in atoms? is that right or did i mess up

chemistry
No, could you explain PT. the molar mass for cobalt is 58.93 g/mols \ where do i go form there

chemistry
As of May 17th 1213, the price of cobalt metal on the London Metal Exchange was $27500 per metric ton. One metric ton is defined as 1000Kg. Determine the price of cobalt in cents per atom.

englis
having problems with a "gerund" worksheet

math
what is the volume of a cube with a base area of 76cm2 (squared) and height 8 cm?

math
harriet and harry got jobs at the bumblo gum factory as bubblegum testers. for every bubble they blow they get 50 cents. harriet blows 100 bubbles and harry blows 150 bubbles. harry says, "wow! between the two of us, we've only made 12.50 today!" what was henrys ...

algebra/ word problem
Justin paddles his kayak 6 miles upstream in 1,5 hours. he turns around and paddles downstream, the same distance, in only 1 hour. What is the rate in still water and what is the rate of the water's current

math
The grade 5 class sold cheese for a fundraiser. What fraction of the orders did each of the four students take?

Math
I'm studying to take a math placement exam and it has been a long time since I've taken a math class. Can someone please give me a step to step solution of these: A.Simplify: 8x/[2^(x-1)] Answer = 2^(2x+1) B.Simplify: (2^x)*[4^(x-1)] Answer = 2^(3x-2)

PHYSICS
An electron gun is a device that sets up an electric field between two plates. The electrons start on the negative plate and thenare accelerated toward the positive plate and out a small hole in its middle if an electron in the gun feels the effect of 5.00x10^5 N/C. What is it...

college algebra
Given the function f(x) = x^3+ 3x a. Find the rate of change between the two stated values for x: 1 to 2 b. Find the equation of a secant line containing the given points: (1, f(1)) and (2, f(2))

Math
A pizza restaurant sold 275 veggie pizzas. It sold 71 more pepperoni pizzas than veggie pizzas. If each pizza cost $9,how much did the restaurant earn?

math
How do i subtract integers? Having trouble with problems like -14-(-5)-8

Science-Biology
I need a good hypothesis to answer my question...

Science-Biology
why do plants grow better under certain lighting conditions than others?

Math
Use a ratio to compare the values. Simplify the ratio. 5 m to 100 cm

3rd grade Math
California has more national parks than many other states. The sum of the two digits in its number of parks is 6. Both digits are even. If California has fewer than 30 national parks, how many does it have?

ENG. PHYS
A constant force Fx = 5.8 N is in the +x direction. (Use the following as necessary: x, and x0. Do not include units in your responses.) (a) Find the potential-energy function U(x) associated with this force if U(x0) = 0. (b) Find a function U(x) such that U(4.3 m) = 0. (c) Fi...

Chemisrty
485

Algebra 2
1. |x^2-3x+3|=3 2. |x^2+2x+1|=-4 3. |3x+2|+3=0

Biology
why do certain cells contain more of certain structures than do others

Physics
A cannonball is fired with initial speed v0 at an angle 30° above the horizontal from a height of 36.0 m above the ground. The projectile strikes the ground with a speed of 1.3v0. Find v0. (Ignore any effects due to air resistance.) HELP NEEDED!!!

physics
A car starting at x = 49 m accelerates from rest at a constant rate of 8.0 m/s2. (a) How fast is it going after 10 s? (b) How far has it gone (from x = 0) after 10 s? (c) What is its average velocity for the interval 0 t 10 s? NEED HELP!!!

algebra
The simple interest paid on a loan after 6 months was $306. The annual interest rate was 8%. Find the principal.

Trigonometry
Calculate the area: From a point A, proceed east for 300 m to Point B. Then travel 420 m on a bearing S35°E to point C. Then travel along a bearing of S40°W for 500 m to Point D. Then return to Point A.

Math 209
Predicting Home Prices Selling prices of homes can depend on several factors such as size and age. The accompanying table shows the selling price for three homes. In this table, price P is given in thousands of dollars, age A in years, and home size S in thousands of square fe...

physics
i walked from four miles in the direction of 30 celisus south of east, then from there i walked 3 miles to west. from there i walked 5 miles directly toward north. hw far away am i from home?' A: USE PARALLEO=LOGRAM GRAPHING METHOD. B: USE CALCULATION METHOD

physics
i walked from four miles in the direction of 30 celisus south of east, then from there i walked 3 miles to west. from there i walked 5 miles directly toward north. hw far away am i from home?' A: USE PARALLEO=LOGRAM GRAPHING METHOD. B: USE CALCULATION METHOD

Math
-2b + -b =

Math
Dale sent Sasha a 2 I/2-pound box of candy. Sasha's little sister ate I/4 of the candy. Sasha's pet poodle ate 1/8 of the original amount. Ifno one else has eaten any candy, how much candy does Sasha have left?

Math
Dale sent Sasha a 2 II2-pound box of candy. Sasha's little sister ate I;4 of the candy. Sasha's pet poodle ate 1/8 of the original amount. Ifno one else has eaten any candy, how much candy does Sasha have left?

MAth grade 8
what is the value of y for the line that has a slope of -3/2 and passes through the points (3;5) (7:y)

MAth grade 8
25

calculus
an open box is to be made from a piece of metal 16 by 30 inches by cutting out squares of equal size from the corners and bending up the sides. what size should be cut out to create a box with the greatest volume? what is the maximum volume?

algebra
For the sequence an=6+5*(n-1), its first term is__??__ ; its second term is__??__ ; its third term is__??__ ; its fourth term is__??__ ; its fifth term is__??_ ; its common difference d= __??__ .

calculus
an open box is to be made from a piece of metal 16 by 30 inches by cutting out squares of equal size from the corners and bending up the sides. what size should be cut out to create a box with the greatest volume? what is the maximum volume?

math
A farmer with 2000 meters of fencing wants to enclose a rectangular plot that borders on a straight highway. If the farmer does not fence the side along the highway, what is the largest area that can be enclosed?

math
The number is even. Clue 2 The number is divisible by 3. Clue 3 The number is a multiple of 7? what is this?

statistics
A biologisst reports a confidence interval of (3,7,5,5) when estimating the mean height ( incentimeters) Of a sample of seedlings. The estimated margin of errors is___

Bio
What path does food take through the digestive and excretory

math
i got -1/2 x?

math
simplify: (x(1/2)(x^2+1)^-1/2(2x)-sqrtx^2+1)/(x^2)

HCA 220
can someone explin how blood clotting, immune response, allergic reaction, and hormone release interrelate. I have been searching and can't find anything

social studies
Any powers not specifically granted to the federal goverment in the constitution

Math
how would you graph x>-2 and how would you solve the sum of two numbers is 3. their difference is 1. find the number.

English
use was instead of were. and and if you say off, then say they were pulling it off of trees. if not then use from

US HISTORY
creating government agencies with the new deal

chemistry
which system is under higher pressure, a column of mercury or a column of water

math
i got up to the very last step but when i plugged my x value into h=xtan37 i just got decimals, like .97131.. what is the answer supposed to be?

math
a hot-air balloon is seen in the sky simultaneously by two observers standing a t two different points on the ground. (the 2 people are facing each other and the balloon is in between them in the air.)they are 1.75 miles apart on level ground. The angles of elevation are 33 a...

math
13

geometry
set up a right triangle the base is 15, hypotenuse 22, and the height is x. solve for x. use the pythagorean theorum. a^2+b^2=c^2 15^2+x^2=22^2 225+x^2=484 x^2=259 x=16.09 feet

math
a hot-air balloon is seen in the sky simultaneously by two observers standing a t two different points on the ground. (the 2 people are facing each other and the balloon is in between them in the air.)they are 1.75 miles apart on level ground. The angles of elevation are 33 an...

Math-PLEASE help!!
An executive committee of three is selected from a group of ten. Which expression best describes the number of combinations? These are my choices. I have to have one of these as the answer. I am stuck. My answer was B. 10!, but I am still not sure. Can anyone help me please? A...

math
Sorry, I asked it twice because he didn't give me an A,B,C,D and I didn't know what he meant by the answer he gave. Thanks for answering.

math
An executive committee of three is selected from a group of ten. Which expression best describes the number of combinations? These are my choices. I have to have one of these as the answer. I am stuck. My answer was B. 10!, but I am still not sure. Can anyone help me please? A...

geomtry
your suppose to use Pythagorean Theorem (a2+b2=c2

Business Law 310
I need help on this assignment which is: Read the scenario summary above and prepare a one-page essay rendering your decision. Please be sure to cite all sources used in APA format.

Business Law 310
Week 3: Torts and Contract Law - You Decide Help Print This Page Scenario Scenario Summary The song “Happy Birthday to You” has universal appeal. Almost everyone knows its lyrics and melody, and it is sung to millions of people on a daily basis. However, what many p...

Geography
Arite, I'm going to read some now and I'll let you know how it comes along. Thank You (:

Geography
The people of Africa vary greatly across the continent. Thousands of different ethnic groups occupy this vast continent. In two or three well-developed paragraphs, suggest two ways in which ethnic groups can differ from one another besides language. Use specific examples of et...

Geometry
This seems partially right except for the fact that a parallelogram has 4 sides, so it should be 2/3, not 1/3

science
how do hydrogen bonds relate to the transfer off heat from the equator towards the poles of earth

math
thank you.. this is what i thought. just double checking

math
a dog is tied to a leash that is hooked to the outside corner of a barn that measures 12 x 20 feet. the length of the leash is 16 feet. what is teh maximum are in which the dog can wander?

math
thank you so much.. this was a huge help.. and if youd like to know how i got the area of the triangle i used the formula... A=sqrt s(s-a)(s-b)(s-c) where s=a+b+c/2...a b and c are the side lengths

math
the area of the triangle is 336 if this helps

math
a triangle with side lengths 26, 28, and 30 is constructed so that the longest and shortest sides are tangent to a circle. the third side passes throught the center of the circle. compute the radius of the circle

math
false.. sqrt of 52 is 7.2111

APUSH
Actually i think it might be sewell newhouse's invention of the steel animal traps.

APUSH
thank you!

APUSH
What helped the oneida community's economy prosper?

maths
true.. plug in 3 for x and solve

APBIOLOGY
what is the main biomolecule in potatoes? what is the primary function for the potato plant?

Math
20 x 20

6th grade
prologue

APUSHistory
Andrew Jackson and during his life time

APUSHistory
Why did jackson disobey his superiors even though he was a stickler for discipline?

science
if i mix sugar into a glass of water into no longer seen what is it called

8th grade
5[6-2(5-3>to the zero power)] Please help so confused answer = -20 or 100 idk please help !

chemistry
never mind, thank you :)

chemistry
I got 186.04 g/mole... did i do that right?

chemistry
In a titration, 3.4 g of an acid (HX) requires 21.5 mL of 0.85 M NaOH(aq) for complete reaction. What is the molar mass of the acid? Answer in units of g/mol. im not really sure how to even start... but i calculated the moles of NaOH which i got to be .018 moles.... what do i ...

CHEMISTRY
calculate the number of moles of solute present in 124.0g of a solution that is 6.45% glucose by mass.

CHEMISTRY- vant hoff
I only have -0.46 degrees, not -1.86 so it stays a -ve, i guess. that is an assignment question word for word. is Kf meant to be -ve?

CHEMISTRY- vant hoff
a 0.100m k2so4 solution has a freezing point of -0.43 degrees. what is the van hoff factors for this solution? kf=1.86degree/m? 0.77 3.0 1.0 2.3 i have used the equation dT=iKfm and get -2.3?

CHEM- solution/freezing piont
so, 0.68K/6.8 K kg mol= 0.1kg/mol (m) then 0.1/32g/mol= 3.1*10^-3 then (3.1*10^-3)*(2.56g)= 8*10^-3 does that make it S8, i dont get that part.

CHEM- solution/freezing piont
a solution of sulfur (2.560g) in naphthalene (100g) freezes 0.68K lower the freezing point of pure naphthalene (353.10K). for naphthalene, Kf= 6.8K kg mol. calculatem the molecular formula of the sulfur dissolved in the naphthalene?

CHEMISTRY
thats what i did and i got it wrong. my answer was 53.46. the study guide says 54.2.

CHEMISTRY
the osmotic pressure of blood at 37 degrees is 7.56atm. what mass of glucose should be dissolved per litre of solution for an intravenous injection to be isotonic with blood?

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