# Posts by anonymous

Total # Posts: 108,973

physics
Spaceship 1 and Spaceship 2 have equal masses of 300 kg. Spaceship 1 has a speed of 0 m/s, and Spaceship 2 has a speed of 4 m/s. What is the magnitude of their combined momentum?

physics
If a car has a mass of 400 kg and a velocity of 30 m/s to the east, what is the magnitude of its momentum?

chemestry
It won't matter. Your atrocious English skills will prevent you from explaining it to anyone. and that's "cataracts"

maths for management
break even point=12000/0.25

Math
To play a game, you spin a spinner like the one shown.you win if the arrow lands in one of the areas marked win.lee played this game many times and recorded her results. She won 8 times and lost 40 times. Use lees data to explain how to find the experimental probability of ...

Math
Tom had 5 3/8 lbs. Of trail mix. He is putting 1/4 lbs. In as many bags as he can, how many can he make?

Oops, the question asks to find the average on [10,70].

Rocket A has a positive velocity v(t) after being launched upward from an initial height of 0 feet at t=0 seconds. The velocity of the rocket is recorded for certain values of t over the interval 0 <= t <= 80 seconds, as shown below. t(seconds),v(t)(ft/sec) = (0,5),(10,...

Math
In Carolina's class, 6/16 of the children have freckles. of the children with freckles, 1/12 have red hair. what fraction of Carolina's class has red hair and freckles?

Math - Optomization
A cylinder is inscribed in a right circular cone of height 6.5 and radius (at the base) equal to 5.5. What are the dimensions of such a cylinder which has maximum volume?

Math
Find the point on the line 7x+1y?2=0 which is closest to the point (?1,?3).

Calculus
All edges of a cube are expanding at a rate of 8 centimeters per second. (a) How fast is the volume changing when each edge is 4 cm? (b) How fast is the volume changing when each edge is 10 cm? Kind of confused... V = x^3 dx/dt = 8 dV/dt = 3x^2 dx/dt (a) When x = 4, ??? (b) ...

Physics
Thank you :)

Physics
If the distance between two charges is increased to three times the original distance, how will the electrical force between the charges compare with the original force? It will increase to three times the original force. It will increase to nine times the original force. It ...

Math
When your doing your math classwork try matching up the problems with Khanacademyits free and gives you immediate feedback when you are wrong and how to do the problem. The key is to actually learn this math. Then when you get stuck on classwork you can get the Tutor or ...

Math

Language arts
Natasha don't worry, you just have a nerd telling you can't have help

Probability
2/x^2

Technical writing
In December, 2013, I visited my aunt for Christmas in Allentown, Pennsylvania, for the first time in 20 years.

Technical writing
You are correct.

Math
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Long Division
****** x^2 + 4 x + 3 (x-4)| x^3 + 0x^2 -13 x - 18 ****** x^3 - 4x^2 *********** +4x^2 -13 x - 18 *********** +4x^2 -16 x ***************** +3 x - 18 ***************** +3 x - 12 R = -6

math
2/3 = 2/3 = +0.666667 not -.6

Physics - Forces
180 sin 37 = 108 N up from force 10 * 9.81 = 98.1 N down from weight difference is to be made up by friction 108 - 98 = 10 N friction down now is that less than the friction max allowed? that is your .2*180 cos 37 = 28.7 so we have much more friction available than we need

English Lit
Manuel Munoz "leave your name at the border" and Maya Angelou "Whats your name girl" Discuss the importance of names as it relates and shapes identity. Compare and contrast these two works and how each contributes whether negatively or positively to how ...

Following the BODMAS rule, brackets go first. (13-2)^2 + 14 -(12/3) = 11^2 + 14 - 4 = 11^2 + 10 = 121 + 10 = 131

math NEED HELP ASAP
The Royal Fruit Company produces two types of fruit drinks. The first type is 60% pure fruit juice, and the second type is 100% pure fruit juice. The company is attempting to produce a fruit drink that contains 70% pure fruit juice. How many pints of each of the two existing ...

Chemistry
Ross pours water at 6.0 C into a container with a pressure of 23. torr. He then boils the water to a temperature of 34 C. The volume changes to 18. mL and pressure to 78. torr. What was the initial volume of the water?

Physics
A box is suspended by a string from the ceiling of an elevator. The string supports the box with a force of 17.0 N when the elevator is accelerating downwards at 1.70 m/s2. What force would the string exert if the elevator was moving upwards at a constant velocity

Physics
You are skiing down a down a slope angled at 30o to the horizontal. You acceleration is 2 m/s2. What is the coefficient of kinetic friction between you and the hill?

Physics
The A box is being pulled by a rope across a level floor as shown in the diagram. The box is accelerating at 1 m/s2, the coefficient of kinetic friction is 0.5. What is the tension in the rope?

history
It is B.

Calculus
Consider the function on the interval (0, 2?). f(x) = x + 2 sin x relative maximum (x, y) = relative minimum (x, y) = From when I worked out using the first derivative test, I ended up with (2?, 0) for the max and (0,0) for the min. Apparently this isn't correct.

Math
A triangle is cut from a 14 in by 12 in rectangle. The triangle is cut so the 12 in side is now only 6in. Therefor, the new area is 84 square ft. What is an equation to represent this word problem?

Math
A triangle is cut from a rectangle. The height of the triangle is half of the unknown side length ss. The area of the shaded region is 84 square inches. Write an equation you can use to find the side length ss. An equation is __________ =84 Help me with an equasion

math 73
if creamery is 22% butterfat. how many gallons of cream must be mixed with milk testing at 2% butterfat to get 20 gallons of milk containing 4% butterfat

Calculus
Consider the differential equation dy/dx = x^2(y - 1). Find the particular solution to this differential equation with initial condition f(0) = 3. I got y = e^(x^3/3) + 2.

Science
Thank you Damon

Science
@bobpursley I actually tried, guess I'm just stupid so thanks.

Science
PLEASE CHECK MY ANSWERS :) answers marked below 1. Which of Earth’s spheres contains most of its mass? (1 point) atmosphere *** hydrosphere geosphere biosphere 2. Erosion and weathering are examples of which types of forces? (1 point) constructive forces destructive ...

L.A.
It's important to be patient on this website. Ms. Sue has to help other students too.

math

math
thanks so much!

math
ooops. That's actually negative 5 not positive.

math
Function Rule: 5x -1= y

math
i need help... i dont know hoe to explain this or how to solve it. Find the function rule: x= -2,-1,0,1,2 y= 9,4,-1,-6,-11

Math
I can't do this for you. What do you need help with?

electrical
A 20v battery with an internal resistance of 5ohm is connected to a resistance of x ohm if an additional 6ohm resistance is connected across the battery find the value of x so that the power supplied externally by the battery remains the same

7th grade ss unit 1 lesson 13 test
I suggest that you read your text book. I know that all home schools send you a text book. Read, find the answer, and then we will check it for you.

Math
don't you have a formula for the future value of an annuity?

math
Draw the diagram. If the horizontal distance from the hill to the tower is x, then if the tower's height is h, we have 50/x = tan45 (50-h)/x = tan30 eliminating x, we get 50 cot45 = (50-h) cot30 Now just solve for h

Equation of planes
how about z=3 x=4 x+z = 10 any plane not including y in its equation, and not having (0,0,0) in the plane. That leaves y free to be any value. The plane is defined by a line in the x-z plane.

Dynamics of rigid bodies
The car is traveling at a speed of 60 mi/hr as it approaches point A. Beginning at A, the car decelerates at a constant 7ft/sec2 until it gets to point B, after which its constant rate of decrease of speed is 3ft/sec2 as it rounds the interchange ramp. Determine the magnitude ...

Math fractions
Eric Practiced piano and guitar for a total of 8 hours this week. He practiced the piano for one fourth of that time. How many hours did Eric practice the piano this week?

math
a phone tree is used to let committee members know ameeting is cancelled. The committee chair calls 5 people Those 5 people each call 5 people, and those additional people call 5 people. how many members have been called

math
If I give you \$40 then the ratio of my money to yours is 4 : 5. On the other hand, if you give me \$40, then the ratio is 8 : 1. How much money do both of us have? please show all steps

English
I disagree. I think the answer is D.

English
I can not do your entire assignment for you. But if you are confused on something, just ask! :)

math
Is it 10.80?

math
A store bought a chalkboard at a cost of \$90 and marked it up 150%. Zach, who works as a salesperson at the store, makes an 8% commission on all of his sales. Yesterday morning, Zach sold the chalkboard. How much commission did he make from this sale?

Math
To solve this problem, I would convert the fractions to the same denominater. 1/4= 4/16 1/2= 8/16 1/8= 2/16 Now you add the fractions all together and you get 14/16. So I think 2 of the rows are carrots.

Science
Does this have anything to do with homework?

Math

Math- Interest Rates
I think I can figure out the rest. Thank you!

Math- Interest Rates
Is the rate 8%??

Math- Interest Rates
Give me a second to think...

Math- Interest Rates
What is the principle? I don't remember.

Math- Interest Rates
Yvonne put \$4,000 in a savings account. At the end of 3 years, the account had earned \$960 in simple interest. A. how much does she have in her account at the end of 3 years? B. at what annual simple interest rate did the account grow? c. how many more dollars would she have ...

social studies
Lincoln did it at Gettysburg! He was president during the Civil War !!!!

chemistry
So the one with lowest value is the strongest? Ex: Mn(s) is -1.18

chemistry
Determine the order of reducing agents (strongest to weakest). A) Mn(s) > Zn(s) > Cr(s) > Fe(s) B) Fe(s) > Cr(s) > Zn(s) > Mn(s) C) Mn(s) > Fe(s) > Cr(s) > Zn(s) D) Zn(s) > Mn(s) > Cr(s) > Fe(s) I know the half reaction for the following: - ...

math
A square is inscribed in a circle. If the area of the square is 9 in2, what is the ratio of the circumference of the circle to the area of the circle?

Math - Trig
x and 850 -x tan 29 = h/x so x = 1.804 h tan 40 = h/(850-x)= .8391 h = (850 -1.804h)(.8391)

Chemistry
Rank the bonds between the listed atoms from most ionic to most covalent: -AlO -CN -SCl -KF

life orietation
How can sports support contribute to nation building and the promotion of diversity?

Algebra
Please help with the below question. I think my answer is correct but not sure. The area of a rectangle can be found using the formula A=lw. The length of the rectangle is 14a6^b7^c13^ and the width of the rectangle is (7a9^b-3^c18^)2^ What expression represents the area of ...

math
If x is to y as 4 is to 5, then what is y:x?

ALGEBRA
IF TODAYS SNOW LEVEL OF 10 FEET WAS 20% OF NORMAL FOR THIS TIME OF YEAR, WHAT IS NORMAL FOR THIS TIME OF YEAR?

english
I agree with Reed. If you look closely you will find the alliteration. Here is the definition of alliteration on google: the occurrence of the same letter or sound at the beginning of adjacent or closely connected words. Hope that helps you find it! :)

Maths
3/18 ? Because since there are 6 sides on a dice then ther is a 1/6 chance to get the number 1 and 2 and 3 so if u do 6 x 3 it is 18 and u whatever you do to the denominator u have to do to the numerator so u would do 1 x 3 which is 3 and thats how you would get 3/18 for the ...

Physics
What happens to the focal length of a converging lens as the radius of curvature is increased?

Math
A baseball diamond has the shape of a square with sides 90ft long. A player 60ft from second base is running towards third base at a speed of 28ft/min. At what rate is the player’s distance from the home plate changing?

math
A ladder 20 m long touches a wall at the height of 10m find the angle made by the ladder with the horizontal?

Algebra 2
Find two pairs of conjugates with a product of 3.

algebra
Kevin and Randy Muise have a jar containing 77coins, all of which are either quarters or nickels. The total value of the coins in the jar is \$ 13.85. How many of each type of coin do they have?

Physics
a) PE -> KE = KE(translational) + KE (rotational) PE = mgh KE(translational) =mv²/2 KE (rotational) = I?²/2 = mR²v²/2R² = mv²/2 (for ring (hoop) I= mR²; ? =v/R) KE = mv²/2 + mv²/2 = mv² mgh = mv² => v=sqrt(gh) b) if ...

chemistry
What is the temperature of a gas that has a volume of 555ml and 43.5 atm that was initially at 20 degrees, 885 ml and 2.9 atm

Chemistry
Calculate the new volume of 23.5 mL of N2 gas initially at 220k Pa and 98.7 degrees Celsius when converted to STP

History
In general like after the British Rule its asking for government, economic, health, and social impact I could not find health impact

History
British Rule in India impact on health

Maths
A speed camera takes two photographs of a car.Photo 2 was taken 0.5 seconds after Photo 1.Marks on the road are 0.8 meters apart.Calculate the average speed of the car in m/s? 7.2 m/s but when i submit answer i get 2 marks only not full 3 marks what am I doing wrong and what ...

History
Look up The Attack of Mutineers July 30 1857. An image should pop up from the website links. Questions : Explain the picture Two groups are fighting due to the Sepoy Mutiny? I don't really know how else to describe it Compare the two different groups of soldiers The two ...

History
Factories, new technologies for ships (Im not sure what they are called), weapons

History
What technologies might be needed to control such a large area

History
what difficulties might face the british in controlling such a large empire

Physics
V=170/1.1 =154.55 m/s²

Physics
Find speed of sound in air if distance is 170 meters and time is 1.1 second

Maths
Simson line

Maths
A point P is chosen on the circumcircle of the triangle ABC. Perpendiculars are dropped from P to the points D, E and F on BC, CA and AB respectively. Prove that the points D, E and F lie on a straight line.

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