Friday
October 24, 2014

Posts by anonymous


Total # Posts: 73,134

physics
thank you so much! definitely appreciate the help.
October 21, 2014

physics
sqrt(50^2+60^2) = 78.1 F=ma 78.1=(40)a ----> 78.1/40=a a= 1.95m/s^2 is this correct? :)
October 21, 2014

physics
two forces are applied to a 40kg object. one force is 50N and the other is 60N. if the forces are perpendicular to another, what will the resultant acceleration of the object be?
October 21, 2014

Math
Stretch your thinking. Write a subtraction equation with a difference of 54.57 . Then draw a number line to show between which two whole numbers the difference lies.
October 21, 2014

Physics
A 5.0kg box slides 8.0m down a ramp, inclined at 40degrees from the horizontal. If the box slides at constant velocity, the work done by gravity is? I used W=F*deltaX*costheta =(mg)*(deltaX)*(costheta) =(5.0)(9.8)*(8.0)* (cos50) Which I got 252 J. Is this correct?
October 21, 2014

Physics
What is the kinetic energy of an ideal projectile of mass 19.4 kg at the apex (highest point) of its trajectory, if it was launched with an initial speed of 29.2 m/s and at an initial angle of 46.9° with respect to the horizontal?
October 21, 2014

Math
kate wants to buy a new bicycle from a sporting-goods store.The bicycle she want normally sells for $360. The store has a sale in which all bicycles cost 5/6 of the regular price. what is the sale price of the bicycle?
October 21, 2014

Math
kate wants to buy a new bicycle from a sporting-goods store.The bicycle she want normally sells for $360. The store has a sale in which all bicycles cost 5/6 of the regular price. what is the sale price of the bicycle?
October 21, 2014

English
Thank You Ms. Sue College English is harder then I thought and haven't had to ask just a few questions and I am running a 98 average
October 21, 2014

physics
A ball is moving horizontally at 9 m/s when it leaves the edge of a table. The table is 1.64 m high. How long does it take to hit the ground?
October 21, 2014

math
manuel says that you can use one of the denominators of 5/6 and 11/30 when renaming these fraction using a common denominator. why is this true
October 21, 2014

math
Andrew wants to rename 2/7 and 3/4 using a common denominator. which of the following shows these fractions renamed correctly. a 8/28 and 21/28 b 2/28 and 3/28 c 4/28 and 6/28 d 2/7 and 3/7
October 21, 2014

Physics
A constant force, F = (4.63, −3.79, 2.16) N, acts on an object of mass 17.7 kg, causing a displacement of that object by r = (4.10, 3.86, −2.45) m. What is the total work done by this force? Im pretty sure the work equals -k(x-xo) but im not really sure what the ...
October 21, 2014

English
Lost on this one. Is demanding in this sentence a verbal gerund or just a verb? He is always demanding to have his own way. I want to say a verbal gerund, but then I want to say verb
October 21, 2014

Physics
What is the kinetic energy of an ideal projectile of mass 19.4 kg at the apex (highest point) of its trajectory, if it was launched with an initial speed of 29.2 m/s and at an initial angle of 46.9° with respect to the horizontal? I know kinetic energy equals half of mass ...
October 21, 2014

math
train A arrives at central station on the hour and every 12 minutes. train B arrives on the hour and every 15 minutes. when do both train arrives at the same time.
October 21, 2014

English
In following sentence is Knowing a verbal participle or a verbal gerund? Knowing how an engine works is the key to auto repair. I want to say gerund because I say it is the subject.
October 21, 2014

Physics
A mass of 2.63 kg is attached to a string tied to a hook in the ceiling. The length of the string, L, is 0.8 m, and the mass is released from rest at an initial position in which the string makes an angle θ of 40.4o with the vertical. Calculate the work (in J) done by ...
October 21, 2014

math
a punch recipe calls for equal amounts of pineapple juice and orange juice. pineapple juice comes in 6- ounce cans and orange juice comes in 10 ounce cans. what is the least amount of each kind of juice that can be mixed without having any left over
October 21, 2014

statistics
A researcher is interested in determining whether acupuncture affects pain tolerance. An experiment is performed in which 15 students are randomly chosen from a large pool of university undergraduate volunteers. Each subject serves in two conditions. In both conditions, each ...
October 21, 2014

Math HELP!
Which statement is true? A. Every real number is an integer. B. Every rational number is a real number. C. Every rational number is a perfect square. D. Every integer is an irrational. Is the answer A?
October 21, 2014

physic
25
October 21, 2014

algebra
The equation y = 14x represents the number of pages Printer A can print over time, where y is the number of pages and x is time in minutes. The table shows the number of pages Printer B can print over time.
October 21, 2014

Math HELP!
When a skydiver jumps from an airplane, the distance d in feet the diver falls in t seconds before opening the parachute is given by the formula d=16t^2. The formula assumes that there is no air resistance. Find the time it takes a skydiver to fall 1,551 ft before opening the ...
October 21, 2014

Math HELP!
The formula v= square root 64h can be used to find the velocity, v, in feet per second, of an object that has fallen h feet. Find the velocity of an object that has fallen 75 feet. Round to the nearest tenth. A. 6.9 ft/s B. 69.2 ft/s C. 69.4 ft/s D. 69.3 ft/s Is the answer D?
October 21, 2014

Math
-k = 10 + 3x^3 - 6x - 7x^5 - x^2 - 2x^4 Is this k = 7x^5 + 2x^4 - 3x^3 + 6x - 10?
October 21, 2014

math
give 3 solutions of the inequality 5x-2>7 I'm confused. will I have 3 same answers, but have to work the problem 3 different ways, or will there be 3 different answers?
October 21, 2014

Math HELP!
Thank you :)
October 21, 2014

Math HELP!
An estimate for -square root 72 is? A. -8.1 B. -8.5 C. -9.1 D. -9.5 Is the answer A? Thanks
October 21, 2014

physics
Under what circumstances, if any, will a converging lens form an inverted image of a real object? Under what circumstances, by itself, will a diverging lens form an erect image of a real object?
October 21, 2014

Math HELP!
Thank you both :)
October 21, 2014

Math HELP!
C is the right answer or A?
October 21, 2014

Math HELP!
maybe C?
October 21, 2014

Math HELP!
As estimate for square root 47 is between? A. 4 and 5 B. 5 and 6 C. 6 and 7 D. 7 and 8 Is the answer A? Thanks
October 21, 2014

Math
Thank you
October 21, 2014

Math
Joy knits a square blanket that has an area of 1,500 square inches. What is the approximate length of each side of the blanket? A. 16 inches B. 27 inches C. 39 inches D. 42 inches Is the answer C? Thank you
October 21, 2014

Math HELP!
Thank you Ms. Sue! :)
October 21, 2014

Math HELP!
Sorry I meant to put D.
October 21, 2014

Math HELP!
Rosa, Roberto, Andrea, and Inno find an estimate for square root 10. Who has proposed the best solution? A. Rosa: "Use square root 9 and square root 25 to estimate." B. Roberto: "I will use square root 4 and square root 9." C. Andrea: "It should be ...
October 21, 2014

Algebra: Answer Check
(2 - 7i) - (5 - 3i) = -3 - 4i (1 + 2i) + (3 + 4i) = 4 + 6i
October 21, 2014

math
What is the perimeter of a triangle with the given side lengths? s1 = x + 4 cm s2 = 3x + 1 cm s3 = 7x + 3 cm
October 21, 2014

Statistics
h
October 21, 2014

Chemistry
Predict and draw the structure of the product of the reaction of the following substrates with the given reducing agent. 2-hexanone mixed with hexanoic acid with (i) NaBH4 (ii) LiAlH4
October 21, 2014

algebra
One integer is 3 less than 4 times another. Their product is 27. Find the integers.
October 20, 2014

physics
what is the work with a force of 19.3 N and a displacement 7 m and an angle of 80.0
October 20, 2014

Pre-Calc
You are taking a road trip in a car without A/C. The temperture in the car is 93 degrees F. You buy a cold pop at a gas station. Its initial temperature is 45 degrees F. The pop's temperature reaches 60 degrees F after 23 minutes. Given that \frac{T-A}{T_0 - A} = e^{-kt} ...
October 20, 2014

chemistry
use kelvin, not celsius
October 20, 2014

math
Jordan is making a beaded necklace, 2/3 of the beads she uses are red and 4/21 of the beads are blue, she wants the rest to be white, what fraction of the beads should be white?
October 20, 2014

Math HELP!
An estimate for -square root 66 is (blank) A. -6 B. -7 C. -8 D. -9 Is the answer C? Thank You
October 20, 2014

Art
What is an artwork source, because I dont know what to put in that field. Is it where I got the my idea from in my drawing, if so would a book where I got my idea be ok? Thank you
October 20, 2014

Math HELP!
Ok thank you, I just redid it and I can see that C is the answer.
October 20, 2014

Math HELP!
Then what do I pick, A?
October 20, 2014

Math HELP!
So the answer is A for the square root of 5
October 20, 2014

Math HELP!
Which two square roots are used to estimate square root 5? A. Square root 1 and square root 2. B. Square root 2 and square root 4. C. Square root 4 and square root 9. D. Square root 9 and square root 16. Is the answer B? Thanks
October 20, 2014

Algebra 2
0=x^3 - 27x You can factor out an x on right hand side 0= x(x^2-27) X=0 X=-sqrt(27) X=sqrt(27)
October 20, 2014

geometry
Find the dimensions of a rectangle if the area is 1500 ft to the 2nd power
October 20, 2014

government
why?
October 20, 2014

government
How doe Congress protect the rights of authors and inventors?
October 20, 2014

calculus
So I can just use the point-slope formula to solve equations like this?
October 20, 2014

government
What is the impeachment power of the House?
October 20, 2014

jh
oh
October 20, 2014

jh
why do you help children?
October 20, 2014

Chemistry
An aqueous solution of ammonium nitrite decomposes when heated to give off nitogen gas and water. This reaction can be used to prepare pure nitrogen gas. How many grams of ammonium nitrite must have reacted if 3.75 liters of nitrogen gas was colleced over water at 25˚C ...
October 20, 2014

physics
A centrifugal pump pumps 100 lbs/hr of water 100 ft high to the top nozzle of a distillation column. The pump impeller is 3 ft diameter?
October 20, 2014

French
What are some phrases a teacher can use to introduce himself/herself in French?
October 20, 2014

Algebra
I need help explaining how to work this problem for my daughter... What is the value of n so that the expression x² + 11x + n is a perfect square trinomial? 11 25 30.25 I know this is the answer but how 36
October 20, 2014

Algebra: Answer Check
1. (4i) + (2 + 8i) = 2 + 12i 2. 6i + 4i = 10i
October 20, 2014

chemistry
i figured this one out
October 20, 2014

English
Studying verbs and participles. Am I right to say falling is a verb in following sentence? The snow had been falling all night. Trying to learn and think I am pretty sure a verb, LOL!
October 20, 2014

science
1. radioactive decay occurs when atoms A- lose mass B- join with atoms of another element C- break down to form atoms of another element D- are exposed to chemical weathering 2. if you want to consult the geologic time scale for when the first vertebrates evolved, where would ...
October 20, 2014

Spanish
How do I say "I used to roller skate, jump rope, and ride my tricycle" in spanish?
October 20, 2014

science
How to do an outline investigation plan?
October 20, 2014

Jay
Please help me to solve this problem. Thank you in advance for helping to solve this problem. Have a great day. Here is the question? Use the point-slope form to write the given slope and point. Leave the equation in that form: slope 7/8, passes through (-2,-9)
October 20, 2014

French
La photo, c'est ton truc? Does photo here mean photo in English or photography?
October 20, 2014

SS
Is Ottawa valley an actual valley?
October 19, 2014

Math
an ice cream cone contains one spherical scoop of ice cream,the diameter of the scoop of ice cream is the same as the diameter of the cone. If the ice cream melts, will the cone overflow? Justify your answer. 4cm spherical scoop of ice cream diameter of cone- 7cm
October 19, 2014

Math
Examine the given right angle triangle. Are the side lengths given in the diagram possible? Justify your answer. lengths: 2.4m, 9.2m, 4.7m
October 19, 2014

Math/Science
Three bullets are fired simultaneously by three guns aimed toward the center of a circle where the bullets mash into a stationary lump. The angle between the guns is 120°. Two of the bullets have a mass of 9.30 10-3 kg and are fired with a speed of 440 m/s. The third ...
October 19, 2014

math
Find the surface area of a right rectangular pyramid with a base 10 in by 8 in and a height of 10 in. (Answer to the nearest square inch)
October 19, 2014

statistics
a researcher wants to find a model that relates square footage
October 19, 2014

math
ooooh no wonder i used the sa formula! thank you
October 19, 2014

math
A jade necklace is made up of 100 spherical jade beads. Each bead has a diameter of 7 mm. What is the total amount of jade, in cubic millimetres?
October 19, 2014

math
a post is put every 6 feet along a rectangular fence that is 42 feet long and 36 feet wide. how many posts are needed?
October 19, 2014

math
A large greenhouse is built in the shape of a right square pyramid with base lengths of 26 m, and a slant height of 35.4 m. How much glass, to the nearest square metre, is needed for the greenhouse? (Lateral area only)
October 19, 2014

Math
The volume of a cone is 8.1 cubic yards. The cone has a height of 2.4 yd. What is the diameter of the cone to the nearest tenth of a yard?
October 19, 2014

physics
The distance between two nearest nodes of a standing wave is 22.9 cm. Hand generated pulses move up and down through a complete cycle five times every seven seconds. Find the velocity of the wave. Answer in units of m/s
October 19, 2014

Math
Giselle has a block of wood that measures 14 cm by 12 cm by 10 cm. She is making a wooden ball in tech class. a) What percent of the wood is wasted? b) What assumptions are you making?
October 19, 2014

SS
Is Jumbo Glacier in Canada actually a glacier or only a mountain resort?
October 19, 2014

Algebra
What polynomial could you subtract from 5x^3 - 12x - x^2 + 9 - 12x^5 - 6x^4 to give a difference of 19 + 8x^3 - 18x - 19x^5 - 2x^2 - 8x^4?
October 19, 2014

science
1. radioactive decay occurs when atoms A- lose mass B- join with atoms of another element C- break down to form atoms of another element D- are exposed to chemical weathering 2. if you want to consult the geologic time scale for when the first vertebrates evolved, where would ...
October 19, 2014

Orgo Lab
146
October 19, 2014

Orgo Lab
Recrystallization is often used at the end of a synthesis. Choose the most accurate answer/s to explain the purpose of recrystallization and how it is done effectively? Note there may be more than one correct answer. 1.Dissolve the crude product in the minimum amount of cold ...
October 19, 2014

science
What is the visual reaction when CuSO4 and NaCO3 is combined? I know what to do, I just forgot the info at school and I need this done by tomorrow. I would prefer to figure it out on my own but I don't have the chemicals at my house and I can't find anything online to ...
October 19, 2014

psychology
Ms sue I tried.. I will try again then post
October 19, 2014

statistics
what is the percentage of the area under the curve is above the mean of the normal curve
October 19, 2014

physics
a soldier climbs a cliff with a pull of 750N on the rope and th rope is 22 degrees to the cliff . how much is he pulling.'
October 19, 2014

physical chem
calculate work when 1mol of H2O is heated from 0-100 degrees C at fixed pressure of 1atm.
October 19, 2014

Algebra
Angel service club is selling flowers. Cost if flower is .50. Sales price is cost of flower plus 40%. How many flowers do they need to sell to make profit of $500
October 18, 2014

physics
What is the velocity of the fallen ball that has 5kg
October 18, 2014

calculus
use differentials to determine by approximately how many centimeters does the diagonal of a square table increase if its area is increased from 50 square centimeters to 54.45 square centimeters? Area= s^2 Diagonal= sqrt(2s^2) so, D= sqrt(2A) dD=A^(-1/2) dA dD= 50^(-1/2)* 4.45 ...
October 18, 2014

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