Friday
August 22, 2014

Posts by anonymous


Total # Posts: 69,776

physics
A 280 N block rests on a 30° incline. (a) What is the normal force exerted by the incline on the block? (b) What (static) friction force is needed to prevent the block from sliding down the incline? (c) What is the minimum coefficient of static friction needed?
June 2, 2014

math
A road has a 10% grade (slope).how much does it rise if it is 2 km long?
June 2, 2014

algebra 2
Let's be rational
June 2, 2014

algebra
Which of the following represents the sum of points p and t plotted below?
June 2, 2014

math
The t-shirts for the fundraiser will cost $4.00 to make and there is a $25.00 delivery fee. There are two sized wristbands; a large one that will cost $5.00 to make, and a small one that will cost $3.00 to make. If everyone who orders wristbands orders one small and one large ...
June 2, 2014

College Algebra
The width of a rectangle is 2 less than twice its length. If the area of the rectangle is 82 cm^2, what is the length of the diagonal? Note: Your answer must be a number. It may not contain any arithmetic operations. w(w+20) = 8000 w^2+20w = 8000 w^2+20w-8000 = 0 (w-80)(w+100...
June 2, 2014

math
a man is in a boat 2 miles from the nearest point on the coast. He is to go to point q, 3 miles down the coast and 1 mile inland. If he can row at 2 mi/h and walk 4 mi/h toward what point on the coast should he row in order to reach point q in the least time?
June 2, 2014

College Algebra ..Please help
I've figure out number #1 so I no longer need assistance on that one. But please help me with the following 4 questions. PLEASE
June 2, 2014

College Algebra ..Please help
I have about 5 homework problem that I am stuck on! please help me. The first of 5 is: A rectangular garden is 20 ft longer than it is wide. Its area is 8000 ft{}^2. What are its dimensions? Im not even sure where to start with this one. Next #2: The area of a rectangle is 16...
June 2, 2014

Physics
A 10.0N frictionless pulley is suspended from an overhead supported by a chain. two weights suspend off the pulley. One weight is 30.0N and the other is 20.0N. (a) What is the tension on the rope? (B) what is the acceleration of the weights? (c) what is the tension on the chain?
June 2, 2014

College Algebra
Thank You. I guess I was over thinking the problem a bit!lol It's my first semester and everything's so new. Thanks so much again
June 2, 2014

College Algebra
A rectangular garden is 20 ft longer than it is wide. Its area is 8000 ft{}^2. What are its dimensions? w(w+20) = 8000 w^2+20w = 8000 w^2+20w-8000 = 0 (w-80)(w+100) = 0 w-80 = 0 w=80 or w+100 = 0 w = -100 I think that x=80 makes more sense. However what would the length be if ...
June 2, 2014

science
can someone help me with this question from your perspective? I just need an example of how to write a similar question. Earth’s energy sources include both renewable and nonrenewable resources. Name at least three sources of energy that could be used in your house. Then ...
June 2, 2014

rounding
8.530 rounded to the nearest tenth degree = 8.5
June 2, 2014

math
For number 3 I need for help on how to do that one
June 2, 2014

math
350 is the amount of students that can order wristbands
June 2, 2014

math
For number 2 I figured out the answer so I do not need help with that one.
June 2, 2014

math
The t-shirts for the fundraiser will cost $4.00 to make and there is a $25.00 delivery fee. There are two sized wristbands; a large one that will cost $5.00 to make, and a small one that will cost $3.00. 1. Write an expression to represent the student council's total cost ...
June 2, 2014

math problem
After12 years I shall be 3 times as old as I was 4 years ago find my present age
June 2, 2014

math problem
Find an equation of the line that passes through two points. (0,4) and (7,10)
June 2, 2014

math 1 question!!!!!!
I am a boy you are a girl dont know that smell you work to much
June 2, 2014

math 1 question!!!!!!
Which is the best display for the set of the number of daily 911 calls made during a month, if you want to be able to identify the mode? A. Histogram with intervals of 5<----- B. Histogram with intervals of 3 C. Line plot D. Line graph
June 2, 2014

math HELP!!!!!!
THAX!!!!
June 2, 2014

math HELP!!!!!!
2. Researchers at Jackson Hospital asked 40 randomly selected patients about their sleep habits. Sixteen reported sleeping 8 hours or more each night. If their are 700 patients in the hospital, estimate the number of patients who sleep 8 hours or more each night. A.140 B.160 C...
June 2, 2014

physics
two objects of equal mass are placed in a room. Object A is placed on the floor and object B is placed on a table top that is 3 meters of the ground. Which one has more potential energy and why?
June 2, 2014

math HELP!!!!!!
Okay i got it C
June 2, 2014

math HELP!!!!!!
Oh okay my second choice would be D
June 2, 2014

math HELP!!!!!!
A newspaper reporter wants to know how popular the hobby of bird watching is in the city. He asked people at the local bird refuge if they watched birds as a hobby. Which of the following best explains whether the reporter's data is valid or not? A. The data is valid for ...
June 2, 2014

MATH!!!
Writing a linear equation You are given the 2012 value of a product and rate at which the value is expected to change during the next 5 years. Use this information to write a linear equation that gives the dollar V of product in terms of the year. (Let t=12 represent 2012). ...
June 2, 2014

trig
Draw the graph of f(x) = tan x and g(x) = 2cos x for 180 _< thetha _< 180 {since its a graph I'm sure how to draw it here}
June 2, 2014

science
All living things must carry out certain functions and possess certain structures to survive, grow, and reproduce. The following chart illustrates how humans possess certain structures to carry out these critical functions. Fill in the plant structures that correspond to the ...
June 2, 2014

science
I have a question on homework. please help Sea otters are part of a giant kelp ecosystem. They feed on sea urchins that feed on kelp. How does hunting sea otters affect the population of sea urchins and kelp in the ecosystem?
June 2, 2014

Trigonometry, can someone check this please
thank you, and my tutor's not very good, and I am home schooled so I have to kind of learn it for myself no one is around to explain it and help me understand I do not have a book due to the budget
June 2, 2014

Trigonometry, can someone check this please
A sled travels from point A at the top of a hill to point B at the bottom. If the sled travels 120 m from A to B and the vertical descent AC is 50 m, what is the angle of depression to the nearest degree? arctan=50/120
June 2, 2014

college algebra
so w=80 and w=-100 ?
June 2, 2014

college algebra
How do I isolate w ?
June 2, 2014

college algebra
A rectangular garden is 20 ft longer than it is wide. Its area is 8000 ft{}^2. What are its dimensions? Let "w" equal the width w+20=8000 w^2+20=8000 not sure how to continue
June 2, 2014

College Algebra
I'm sorry I wrote the problem wrong previously. "The equation x^2-9x-1=0 has 2 solutions A and B. Where A < B. x^2-9x-1=0 (x-9)x=1 x^2=9x+1 (x-9/2)^2-85/4=0 Solutions x=1/2(9- sq root 85) and x=1/2(9 + sq root 85) I also have a second similar problem. 2x^2+17x+2=0 ...
June 2, 2014

College Algebra
The problems reads: "The equation x^2-9x=0 has 2 solutions A and B. Where A < B. The answers I got where x=0 and x=9, however my online homework is saying its incorrect. Please help me (x-9)x=0 x^2=9x (x-9/2)^2-81/4=0
June 2, 2014

Math
I still don't get it.
June 2, 2014

Math
Noreen recently took a job helping people register to vote. The job has a mandatory 10-day period of probation during which her success rate is strictly monitored. On her first day, she registered 30 people. Then, for each of the next 9 days, she registered 4 more people than ...
June 2, 2014

science
All living things must carry out certain functions and possess certain structures to survive, grow, and reproduce. The following chart illustrates how humans possess certain structures to carry out these critical functions. Fill in the plant structures that correspond to the ...
June 2, 2014

Chemistry. HELP.
ELASTICITY, LIKE YOUR SOCKS (10/10 points) The crystal structure of graphite is shown below. Use the figure to answer the following questions. Compare the Young's moduli for the directions indicated in the figure. Fill in the blank. The modulus along a is _________ that ...
June 2, 2014

science
All living things must carry out certain functions and possess certain structures to survive, grow, and reproduce. The following chart illustrates how humans possess certain structures to carry out these critical functions. Fill in the plant structures that correspond to the ...
June 2, 2014

science
Which female structure in a flowering plant traps pollen grains? a) pistil b) stigma c) ovary d) anther Answer A
June 2, 2014

chemistry
X-RAY DIFFRACTION OF AN UNKNOWN METAL, MIGHT BE DANGEROUS (10/10 points) Last week you and a friend started an experiment to obtain the X-ray diffraction peaks of an unknown metal. Through these diffraction peaks you wanted to determine: (a) whether the cell is SC, BCC, or FCC...
June 2, 2014

helpppp
250000(1+.045/12)^(12*3.5) = 292,559
June 2, 2014

check set up trigonometry
Lee is on a cliff 360 m above sea level, the angle of depression of a ship is 28 degrees. To the nearest meter, what is the distance between the ship and the base of the cliff? tan28=x/360?
June 2, 2014

check my set up please, trig
Sarah holds the end of her kite string 5 feet off the ground. The kite string makes a 43 degree angle of elevation with the horizontal and the kite is 105 ft. off the ground. How long is the kite string to the nearest tenth of a foot? cos43=100/x ?
June 2, 2014

physics
a body of weight 10 n is kept on a smooth horizontal table.what is the force exerted on the table by the body
June 2, 2014

rounding to the nearest meter
51.423 rounded to the nearest meter is 51? or 51.4
June 2, 2014

check my arctan please
arctan(1/12)= 4.763 rounded to the nearest tenth degree, which is 4.8? because arctan=inv tan
June 2, 2014

chemistry
340. mL of hydrochloric acid (HCl) acid is exactly neutralized with 500. mL 0.700 M NaOH solution. What is the concentration of the acid solution?
June 1, 2014

check my set up please
thank you
June 1, 2014

check my set up please
so the nearest meter would be 110.0
June 1, 2014

check my set up please
At a horizontal distance of 34 meters from the base of a tower, the angle of elevation to the top is 72 degrees. Find the line of sight distance to the nearest meter. I set this up tan72=x/34
June 1, 2014

rounding
thank you
June 1, 2014

rounding
6.5
June 1, 2014

rounding
rounding 6.535 to the nearest tenth of a foot = 6.54?
June 1, 2014

trigonometry, check please
A 12 ft. ladder makes a 33o angle with the side of a house. To the nearest tenth of a foot how high up on the house does the ladder come? I set it up 12xcos33 giving me 10.0
June 1, 2014

math 221 intro to algebra
When looking at the example of the slideshow, Equivalent Fractions, which is located in the media section of Chapter 1, the presenter divides out the common factor of _____. (Points : 1)
June 1, 2014

PLEASE HELP W/ COMPUTER SCIENCE?? JUST 1 PROBLEM?
Which specific language/environment are you using? VB?
June 1, 2014

trigonometry, check my answer please?
A 15 ft. ladder is leaning against the side of a house and forms an angle of 66o with the ground. To the nearest foot how far from the base house is the foot of the ladder? I set it up cos66=15/x 15/cos66 =36.878, rounding to the nearest ft makes it 37
June 1, 2014

rounding
Is 151.123ft rounded up or down? 150 or 152, or is it 151 flat out since it is a 1 after the decimal
June 1, 2014

SCIENCE
thank you.one day i want to be as smart as you are
June 1, 2014

SCIENCE
so its oval?
June 1, 2014

SCIENCE
WHICH ONE IS IT
June 1, 2014

SCIENCE
AND THIS the moon isn't a perfect sphere its kinda like a oval in a way The shape of the moon is an oblate spheroid, just like earth IS IT CORRRECT
June 1, 2014

SCIENCE
I ALSO FOUND THIS ANSWER:It is actually shaped like an egg. But the pointy part faces away from the earth.
June 1, 2014

SCIENCE
I TOLD MY TEACHER THAT. I USED THAT SAME WEBSITE AND SHE SAID SHE WANTS THE TRUE SHAPE AND I WAS CONFUSED
June 1, 2014

SCIENCE
COULD U HELP ME OUT A LITTLE PLEASE IM NOT GETTING ANYTHING ON IT
June 1, 2014

SCIENCE
WHAT IS THE TRUE SHAPE OF HE MOON? ANSWER:ORBIT IS THAT CORRECT
June 1, 2014

algebra2/ Trigonometry
,,,
June 1, 2014

Chemistry
Find the number of moles of particles for NaCl
June 1, 2014

trigonometry ans.
oh okay, it's confusing, thank you guys!
June 1, 2014

trigonometry ans.
so it's 66 not 66.35 ? right
June 1, 2014

trigonometry ans.
At a point on the ground 50 feet from the foot of a tree, the angle of elevation to the top of the tree is 53°. Find the height of the tree to the nearest foot. I got 50xtan53 = 66.35 nearest foot ? would I use tan or sin since I'm finding the foot of the tree
June 1, 2014

physics
A 68.0 kg ice skater moving to the right with a velocity of 2.55 m/s throws a 0.16 kg snowball to the right with a velocity of 27.5 m/s relative to the ground. (a) What is the velocity of the ice skater after throwing the snowball? Disregard the friction between the skates and...
June 1, 2014

help
thank you first answer I got was 32.03
June 1, 2014

help
A salvage ship’s sonar locates wreckage at a 12 degree angle of depression. A diver is lowered 40 meters to the ocean floor. To the nearest meter how far does the diver need to walk along the ocean floor to the wreckage?
June 1, 2014

MATH HELP!!!!
A searchlight located 200 meters from a weather office is shined directly overhead. If the angle of elevation to the spot of light on the clouds is 35°, how high is the cloud ceiling? Round to the nearest hundredth.
June 1, 2014

Math
Let A be an event with probability P(A). If E[(IA) ^36217] = Var[2(IA + 36217)]. Find P(A)
June 1, 2014

Social Science
How to collect the following: sand, iron filings, salt, ethanol and water.
June 1, 2014

math
Carousel Toys has Romper Buckaroos, wooden rocking horses for toddlers, on a 30% markdown sale for $72.09. What was the original price before they were marked down? Round to the nearest cent. $
June 1, 2014

world history
what are some songs about Buddhism? They are needed for a school project.
June 1, 2014

physics
A clerk moves a box of cans down an aisle by pulling on a strap attached to the box. The clerk pulls with a force of 173.0 N at an angle of 31° with the horizontal. The box has a mass of 40 kg, and the coefficient of kinetic friction between the box and the floor is 0.45. ...
June 1, 2014

science
All living things must carry out certain functions and possess certain structures to survive, grow, and reproduce. The following chart illustrates how humans possess certain structures to carry out these critical functions. Fill in the plant structures that correspond to the ...
June 1, 2014

science
Which female structure in a flowering plant traps pollen grains? a) pistil b) stigma c) ovary d) anther Answer A
June 1, 2014

Math
There were 2400 people at a concert.40% of them were men, the rest were women and children.The number of women was 1 2/5 times the number of children.How many more more men than women were there?
June 1, 2014

chemistry
how many particles of water are made when 6.2 grams of methanol are consumed
June 1, 2014

Physics
A shell is fired from the ground with an initial speed of 1.54 ✕ 103 m/s at an initial angle of 52° to the horizontal. (a) Neglecting air resistance, find the shell's horizontal range. (b) Find the amount of time the shell is in motion.
May 31, 2014

MATH GEO URGENT
The ratio of three consecutive angles in a cyclic quadrilateral is 2:3:4. Find the largest angle of the quadrilateral, in degrees.
May 31, 2014

history
10 examples of prejudice or bigotry
May 31, 2014

math 1 question!!!!!!
HELP!!!!!! PLEASE!!!!!
May 31, 2014

math 1 question!!!!!!
3. Which ordered pair is NOT a solution of y= –12x – 3? A. (-3, 33) B. (8,-98)<----?? C. (-9, 105) D. (3, -39)
May 31, 2014

math
Oh yeah oops
May 31, 2014

math
Which is a rule that describes the translation of a point form (4, –8) to (7, –10)? A.(x,y)--->(x+34,y-2) B.(x,y)--->(x+34,y+2) C.(x,y)--->(x-34,y-2) D.(x,y)--->(x-34,y+2) My answer:B
May 31, 2014

intro to computers
A user calls your help desk and says that he is trying to configure his Word document so that the text within his paragraphs is stretched from the left margin to the right margin. What is your advice?
May 31, 2014

physics
7. The speed of a man with and against the water currents in a river are 15km/h and 5km/h respectively. Find his speed in still water and the speed of the water currents.
May 31, 2014

physics
6. Two particles are moving with a constant speed v such that these are always at a constant distance d apart and their velocities are equal and opposite. After what time do these return to their original positions
May 31, 2014

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