Posts by jade

Total # Posts: 339

Math
A ship leaves port at 1:00 P.M. and travels S35°E at the rate of 28 mi/hr. Another ship leaves the same port at 1:30 P.M. and travels S20°W at 18 mi/hr. Approximately how far apart are the ships at 3:00 P.M.? (Round your answer to the nearest mile.) I tried to solve it...

math
What is 112% of 80?

math
Two boys weighing 60 pounds and 80 pounds balance a seesaw. How many feet from the fulcrum must the heavier boy sit if the lighter boy is 8 feet from the fulcrum? thank you!!

Math
Suppose an extra representative will be added to the current total of 15 representatives. Use the apportionment criterion to decide who should get an additional representative. Justify your answer. Subdivision A has 560 residents and 6 representatives in the City Hall; whereas...

American Government
these answers are right 100%

English
A

English
Could it be A or B also thanks

English
Thanks

English
Gripping the rail, "Lindsey stepped onto the ice". A.) independent clause B.) adjective clause C.) adverb clause D.) noun clause c??

English
thank you

English
In "A sound of thunder", the butterfly symbolizes A- the fragility of life *** B- spring, rebirth, renewal C- changing into a new being D- lying towards one's dreams

Maths
Last year Tom spent 20% of his money on clothes, the rest he spent on food, utilities, socializing and savings in the ratio 2 : 7 : 3 : 4. If Tom spent £2500 on food, how much did he spend on everything else and how much does he earn in total?

algebra
ental car company charges a base fee of 15.00 plus 0.35 per mile driven which of the following equations models the charge c for renting a car based on the number of miles

Stats: Counting Techniques Fundamental Theorems A
A company has 12 male and 10 female employees, and needs to nominate 3 men and 3 women for the company bowling team. How many different teams can be formed?

Physics
This is an Oscillations question. A horizontal plate is vibrating vertically in simple harmonic motion at a frequency of 20Hz. What is the maximum amplitude of vibration so that a coin of 0.0080kg resting on the plate always remains in contact with it?

English
What is the purpose of the author using flashbacks in the short story 'penny in the dust'?

Math
The sequence a(1), a(2), a(3),...,a(n-1), a(n) is such that a(r)= 7r-3. Show that 1/[?a(r) - ?a(r+1)] = k[?(7r-3) - ?(7r+4)]. The numbers/letters in brackets are subscript.

Math
The sequence a(1), a(2), a(3),...,a(n-1), a(n) is such that a(r)= 7r-3. Show that 1/[?a(r) - ?a(r+1)] = k[?(7r-3) - ?(7r+4)]. The numbers/letters in brackets are subscript.

Cell Biology
I think its c

Earth Science
I dont know how to post it. How do I do it?

Earth Science
PLEASE HELP! URGENT! 7. Which letter arrows point to hanging valleys? 8. Which letter arrows point to aretes? 9. Name a peak on the map that is a horn. 10. Feature E on the map is composed of glacial till. What type of glacial feature is E, and how did it form?

Math
If one side of triangle measures 3.5 dm. What is the perimeter

Pre-Calculus
tan theta = 1/2, what's sec theta?

Pre-Calculus
csc theta = sqr root of 5, what is cot theta?

Math
The area of a plot of land on map A is 800cm^2. Calculate the area of the same plot of land on map B which has a scale of 1:5000. (Scale of map A is 1:3400)

Physics
Having captured a mouse, an owl is flying towards the barn where it lives to enjoy dinner. While approaching the barn at a speed of 6.9 m/s at an upwards angle of 8o above the horizontal, the struggling mouse escapes from the talons of the owl while at an altitude of 4.6 m. ...

physics
Fleas can jump quite high; experiments show that they reach an altitude of 130 times their own height when they jump vertically! Suppose instead that a flea can jump so that it lands a maximum distance of 19.60 cm away. What is the take-off speed for this flea?

MATH help asap
I'm in 8th grade too, and getting decent grades in math. If you need some help, you can always ask me.I'm here to help :)

Math
What is 7/8 into 11/16?

Business
How do you collate survey results in a spreadsheet, in order to make graphs afterwards? How do you collate: Open-ended questions Close-ended questions Multi-answer questions

chemistry
unhealthy for your digestive system, offsets nature

Math Help!
I can help you, if you give me questions you need. I'm in connexus eighth grade. What are the problems you need help with? I know it is hard to be behind.

Math
Holly used 2/3m ribbon to tie one parcel. How many metres of ribbon will she need for 5 similar parcels?

Math
What is the correct unit for volume?

centimeter dot grid
Thank you

centimeter dot grid
I have to draw rectangles with a perimeter of 16 cm and I don't know how to do it.

Math
Wendy is 8 years old. The product of Wendy's and Andy's age is 80. What is Andy's age?

Math
Wendy is 8 years old. The product of Wendy's and Andy's age is 80. What is Andy's age?

chemistry
calculate the PH at the 60ml of .200M aniline (kb=3.2x10^-6) with .200M HNO3 solution before acid is added after 0,19,70 ml of HNO3

Math question help!!
1/3 MULTIPLE BY 24 = 8

Chemistry
Write the dissociation equation for calcium chloride. Include a diagram of the resulting solution.

Algebra 1
Fred would like to get at least a C in the class. He got a 68 on the first test. Write an inequality and then solve to find out what Fred would need to get on his next test to have a C in the class. • C≥68 (I honestly do not know how to even start this out.)

Programming C++ using Data Structure.
Three

Physics
A Ferris wheel, 24.0 m in diameter, rotates once every 12.5 s(see the diagram.) What is the fractional change in a person'sapparent weight (a) at the top, and (b) at the bottom, as comparedto her weight at rest?

physics
Drag race tires in contact with an asphalt surface probably have one of the higher coefficients of static friction in the everyday world. Assuming a constant acceleration and no slipping of tires estimate the coefficient of static friction for a drag racer that covers the ...

Math
3/8, 33%, 0.35 Which is the biggest

Math
a satellite traveling in a circular orbit 2000 kilometers above the earth completes one orbit every 3 hours. assume the earth is a sphere and its radius is 6400 kilometers. find the angular velocity of the satellite

Math
a satellite traveling in a circular orbit 2000 kilometers above the earth completes one orbit every 3 hours. assume the earth is a sphere and its radius is 6400 kilometers. find the angular velocity of the satellite

Math
Thank you very much.

Math
Thank you, but could you explain this solution for me , please?

Math
How old is Robert,if Marin is 9 years older than him and their ages make 21?

Physics
A block with a mass m = 3.50 kg sits on a surface with a coefficient of static friction µs = 0.520. A spring with spring constant k = 75.0 N/m is hooked onto the block, and is slowly pulled horizontally, gradually stretching the spring. (a) When the spring is stretched ...

Social Studies
1. The French announced support for the United States after the American victory at _____. A. Boston B. Saratoga*** C. Philadelphia D. Yorktown

Algebra 2
Can someone help me solve this inequality please? So I'm supposed to write the answer in interval notation and then graph it. The problem is the answer I get is negative and I thought that absolutes cannot be negative? Am I wrong? Here is my work so far: |2x-1|+6<2 |2x-...

AP physics
A 65-kg skier starts at rest and slides 30 m down a hill inclined at 12∘ relative to the horizontal. Consider the force of friction on the skier to be negligible. Determine the speed of the skier after sliding 30 m downhill.

English
Identify the correct sentence. A. Has your cousin and her boyfriend come by to visit you? B. Have your cousin in addition to her boyfriend come by to visit you? C. Have your cousin plus her boyfriend come by to visit you? D. Have your cousin and her boyfriend come by to visit ...

Science
So wheres the answers??? I need help too!!

Science
0.5sec 16m/s

Math 7
how high is a tree that casts a 25 foot shadow at the same time a 6 foot pole casts a 10 foot shadow? Please help! I don't understand how to solve any problem like this!!

P.E.
The first step in getting help for drug abuse is Detoxification Withdrawal Joining a therapeutic community Recognizing the problem*** ????????????

Math
If no digits may be used more than once , how many 5 digits can be formed using only the digits 3, 8,1,2,5 ,7?

P.E
Health /or PE.

Social studies
just took it and dac is the answers got 100%

Science
What is the equilibrium concentration of silver ions at 25 degrees C in a 1.0-L saturation solution of silver carbonate to which .20 mole of NaHCO3 has been added? The Ksp of Ag2CO3 is 8.1 x 10-12 at 25 degrees C

biology
What is the role that sensors play in the maintenance of homeostasis in the human body?

Math
The Leaning tower of pisa is 55.9m tall and leans 5.5 degrees from the vertical. If its shadow is 90.0m long, what is the distance from the top of the tower to the top of the edge of it’s shadow? Assume that the ground is level.

math
An equation can be used to find the height of a child. Equation is h=2c. The child is 36 inches at 18 months. (12in=1ft) How tall will the child be when he is 5 years of age?

Math
An equation can be used to find the height of a child. Equation is h=2c. The child is 36 inches at 18 months. (12in=1ft) How tall will the child be when he is 5 years old?

Math
An equation can be used to find the height of a child. Equation is h=2c. The child is 36 inches at 18 months. (12in=1ft) How tall is the child?

math
Sam is flying a kite. The length of the kite string is 80 meters, and it makes an angle of 75° with the ground. The height of the kite from the ground is... A.20.27 B.61 C.77.27

Math-Lit 143
Suppose you buy a two-year CD for $50,000 from First Command Bank. Use the APY from the First Command Bank table to determine how much interest it earns for you at maturity.

math
Amanda's punch recipe : 7 parts mixed fruit juice, 2 parts of lemonade [Question : how much lemonade will she need to make 180 fluid ounces of punch ?]A .140 Fluid ounces or B. 40 Fluid ounces C. 36 Fluid ounces D. 60 Fluid ounces i think the answer is b am i right

chemistry
at STP , what is the volume of 7.08 mole of Nitrogen gas ?

algebra
Dorothy is thinking of two numbers. The sum of the numbers is 40 and the difference is 6. write a system of equations and use elimination method to find the two numbers.

geometry
A model is made of a car. The car is 7 feet long, and the model is 16 inches long. What is the ratio of the length of the car to the length of the model? 4:21 7:16 16:7 21:4 I think it is C.

Physics
In the annual battle of the dorms, students gather on the roofs of Jackson and Walton dorms to launch water balloons at each other with slingshots. The horizontal distance between the buildings is 36.0 m, and the heights of the Jackson and Walton buildings are, respectively, ...

English
Explain the link between the play (writers), Thoreau, and the two wars on the notes list.

physics
A dart player throws a dart horizontally at a speed of 13.5 m/s. The dart hits the board 0.32 m below the height from which it was thrown. How far away is the player from the board?

Health
C I should know because i had this on my quiz.

math
I need help!!! and my homework question is Box a is 6 times as heavy as box b.The total weight of the two boxes is 840g.How much heavier is box a than box b?

Chemistry
100 cm3 of alkane X with the general formula CxHy requires 650 cm3 of oxygen for complete combustion. Deduce the structural formulae for the isomers of X.

Physics
a 60-kg student travelling in a car with a constant velocity has a kinetic energy of 1.2 *10^4 J. What is the speedometer reading of the car in km/h?

English
In this novel, Moon Shadow comes to America to be with his father, Windrider, from their home in the Middle Kingdom. As Moon Shadow and his father struggle to survive in a hostile country, they somehow find time to focus on their dreams. Windrider has read about the flying ...

English
Yes but i don't really get the question or the book, please help

English
In the book dragonwings why does windrider break the rules and go after black dog? Why does the tiger genral cooperate with windrider?

English
In the book dragonwings why does black dog beat up moon shadow? What does the fact that the boy is not angry at black dog suggest or tell you about him?

English
In the book dragonwings why doesn't moon shadow attend public school? How is he being educated?

Calc I
I am having trouble taking the derivative of the following: t(4-t^2)^(1/2) I can't decide if you need to use the product rule or not. What I did is used the PR to get (4-t)^1/2)*1t^2*(4t-1)^(-1/2) Is this correct?

Chemistry
2K2Cr2O7 + 8H2SO4 + 3C2H5OH → 2Cr2(SO4)3 + 2K2SO4 + 3CH3COOH + 11H2O

Chemistry
During a Breathalyzer Test it was determined that 1.60mg of K2Cr2O7 was consumed by the above reaction. Calculate the number of milligrams of ethanol in the test sample.

science
a mechanic applies the force of 50 N at a distance of 40 cm from the pivot on a wheel wrench . what is the size of the moment ?

Calculus
Please check, if there is something wrong please explain what I did wrong. Thank you! Calculate the d^2y/dx^2. y= e^-x + e^x y' = e^x - e^-x y'' = e^x + e^-x Find the x-coordinace of all critical points of the given function. determine whether each critical point ...

Vertex, Focus, & Directrix of Parabolas
identify the focus,directrix,and axis of symmetry of f(x)= 1/16 x^2

chemistry
If you dissolve 236.5 g of (NH4)3PO4 and 166.9 g of K3PO4 in enough water to make the volume of the solution 505.0 mL What is the molarity of ammonium ions and phosphate ions?

Health JUST NEED ANSWERS CHECKED :)
1.true 2.true 3.false 4.true 5.false 6.true 7.true 8.true 9.false 10.true

Physics
At t=0 a grinding wheel has an angular velocity of 24.0rad/s . It has a constant angular acceleration of 35.0rad/s2 until a circuit breaker trips at time t = 1.90s . From then on, it turns through an angle 436rad as it coasts to a stop at constant angular acceleration. Through...

Math
F(x)=2sin(3x/2-3pi/4)+2

Math
Solve the given quadratic equation exactly using the quadratic formula. Write the solutions in its simplest form. Using a calculator, determine all irrational solutions to the nearest thousandth. Separate the solutions with a comma and list the smaller one first. For the ...

Math
In mr.kingmans math class four fifths of the stundents earned an a on their math exam.the rest of the class earned a b .what percent of the class earned an a ? WhAt percent of the class earned a b

PHYSICS
Two dogs pull horizontally on ropes attached to a post; the angle between the ropes is 62.0∘. Dog A exerts a force of 270N , and dog B exerts a force of 302N . Find the magnitude of the resultant force. Find the angle the resultant force makes with the rope of dog A.

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