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Posts by Claudia

Total # Posts: 237

Physics
If a sound has a wavelength of 3 m, what is its frequency? Use 340 m/s for its speed of sound.

mat
Two cargo ships are siling a direct course into harbor. Ship A is 22 miles from harbor. Ship B is sailing into harbor on a course perpendicular to that of ship A. If the angle between them is 47 degrees, how far is ship B from the harbor? Round the answer to the nearest tenth.

Math
David uses 1/3 cup of apple juice for every 1/2 cup of cranberry juice to make a fruit drink.

Algebra
The speed of a moving sidewalk at an airport is 3 ?ft/sec. A person can walk 79 ft forward on the moving sidewalk in the same time it takes to walk 15 ft on a nonmoving sidewalk in the opposite direction. At what rate would a person walk on a nonmoving? sidewalk?

maths
A rectangular box with given dimensions length=80m, width=64m and height=48m. Has its two largest sides painted green. what percentage of the total area is painted green?

Math
A fully opened parachute is shaped like a hemisphere and has a diameter of 8m. Which of the following is closet to the volume of air that can fit in the fully opened parachute a)134m3 b)268m3 c)1072m3 d)2145m3

math
Two people start at the same point One walks east at 2mph and the other walks southwest at 3mph. How fast is the distance between them changing after 30 minutes?

Language Arts
Metaphor states a comparison and a simile uses words like “as” and “like” So is the answer A?

Language Arts
Thank you

Language Arts
1. Choose the meaning that best matches the word in capitals: After eating a second piece of cake, my CONSCIENCE began to eat me! A. being fully aware B. gaining knowledge C. feeling of satisfaction D. knowing what is right and wrong** I think D

Biology (Please, Help Me!)
Exponential growth occurs whenever the reproductive rate is greater than zero on a graph where the population size is plotted against time the plot of exponential growth rises quickly forming a J shaped curve. A logistic growth occurs when limiting factors restrict the size of...

Physics
In this sound interferometer, sound waves enter at A and travel to C via paths ABC and ADC. the intensity of the sound can be determined by the microphone placed at C. The length of the path ADC can be changed by a sliding tube. The frequency is fixed at a certain value and ...

Maths
The temperature is shown at 6:00am. It is rising at one degree every thirty minutes. At this rate, it will be 20 degrees at what time?

physics
Thank you Steve!

physics
In all parts: assume the the air temperature is 17.8o C, so the speed of sound in air is 342.0 m/s. Part A. Suppose a ship's foghorn is sounded toward an iceberg, and an echo is heard 6.16 s later. Find the distance from the ship to the iceberg. d = ? m Part B. b) Suppose ...

Emerson
I'm helping my son he is in 4th grade . His hw it's hard and this is the problem : find two mixed numbers. So that the sum is 7 2/8 and the difference 2 4/8.

Science
C.the frequency of the wave.

algebra 1
42

easy,fun math
i need how many fish belle eats not how many left

easy,fun math
Belle gets 3 buckets of fish evreyday. there are 8 fish in each bucket.if Belle eats two and a half buckets of fish,how many fish will she eat?

L.A
we had an essay to do about rising action and to answer your question either B or none

Math
yes i agree A

4th grd math
lol we do it was actually a penguin

4th grd math
Belle gets 3 buckets of fish evreyday. there are 8 fish in each bucket.if Belle eats two and a half buckets of fish,how many fish will she have left

Literature
abcdefg

Bio
A.

algebra
no i did not leave anything out. this is excatly how the problem is writen

algebra
find two point for the following equation and plot the point on graph 4x=5

Math
The student activities department of a community college plans to rent buses and vans for a spring-break trip. Each bus has 40 regular seats and 1 handicapped seat; each van has 8 regular seats and 3 handicapped seats. The rental cost is $305 for each van and $985 for each ...

Math
2)Banquet Seating A banquet hall offers two types of tables for rent: 6-person rectangular tables at a cost of $26 each and 10-person round tables at a cost of $51 each. Kathleen would like to rent the hall for a wedding banquet and needs tables for 250 people. The room can ...

Math
A financial consultant wishes to invest up to a total of $33,000 in two types of securities, one that yields 8% per year and another that yields 6% per year. Furthermore, she believes that the amount invested in the first security should be at most one-third of the amount ...

MATH
A financial consultant wishes to invest up to a total of $33,000 in two types of securities, one that yields 8% per year and another that yields 6% per year. Furthermore, she believes that the amount invested in the first security should be at most one-third of the amount ...

Math
Manufacturing A factory manufactures two products, each requiring the use of three machines. The first machine can be used at most 70 hours; the second machine at most 40 hours; and the third machine at most 90 hours. The first product requires 2 hours on machine 1, 1 hour on ...

Math
Manufacturing A factory manufactures two products, each requiring the use of three machines. The first machine can be used at most hours; the second machine at most hours; and the third machine at most hours. The first product requires hours on machine hour on machine and hour...

math
What is 27 times 3/8

CHEMISTRY
A garden fertilizer contains 15% by mass of nitrogen. The recommended usage is 30g of fertilizer per 10dm^3 of water. What is the concentration of nitrogen in this solution? a)0.15 g dm^-3 b)0.30 g dm^-3 c)0.45 g dm^-3 d)3.00 g dm^-3

Math
The variables x and y are related by the equation y=ax/(x-b),where a and b are constants .When y is plotted against y/x ,a straight line is obtained .The line has gradient 3 and y-intercept 2. (i)Find the values of a and b (ii)Find the values of x which x=y

math
Can be more specific? still do not understand ... The answer for part (ii) should be y=7.4(0.2)^2 and the values of q is o.2 ..

math
A diagram shows a straight line graph of In y against x,passing through the point (0,2) and having gradient -3/2 . The variables x and y are connected by the equation y=pq^x ,where p and q are constants Find (i)the value of p and of q ,to one decimal place (ii)the equation ...

math
1.Express (xe^x)^2=30e^(-x) in the form lnx=ax+b,and find the value of a and of b . 2.solve 4(3^2x)=e^x

Reading
Do you have the story animal senses

Reading
Animal senses

math
Help!!!!

algebra
solve each system by elimination 9x-6y=-30 x-3y=6

math
write a 4-digit number with a 0 in the hundreds place and a 0 in the tens place.Now write another number,using the same four digits and tell which number is larger.

principles of physics
You go to SS?

math
In a group of 9 coins, one is fake and weighs slightly more. What is the fewest number of times you need to use a pan balance to find the counterfeit coins? (A pan balance is a scale used to measure weights, where weights are placed in two pans. The heaviest pan will go down ...

Math 543
how did you solve

Physics
Identical +6.15 µC charges are fixed to adjacent corners of a square. What charge (magnitude and algebraic sign) should be fixed to one of the empty corners, so that the total electric potential at the remaining empty corner is 0 V?

Math
A coin is tossed three times. If heads appears on all 3 tosses, Mary will win $16. If heads appears on 2 of the tosses, she will win $2. The game costs $5 to play. What is her mean expectation?

physics
A 1000kg rocket is moving forward at 10m/s in space. A 10,000N force is applied to the rocket for one second from behind. How fast is the rocket now traveling? a. 0m/s b. 10m/s c. 15m/s d. 20m/s

science
homogeneous are Blood, Carbon dioxide gas, solid carbon dioxide ,air, oxygen heterogenous are rock, steak, iron, rust, concrete,milk.

physics
For women's volleyball the top of the net is 2.24 m above the floor and the court measures 9.0 m by 9.0 m on each side of the net. Using a jump serve, a player strikes the ball at a point that is 3.03 m above the floor and a horizontal distance of 8.4 m from the net. (a) ...

science
if each person in the red team is pulling a rope with a force of 250N and each person in the blue team is pulling with a force of 200N what is the total force excerted by the blue team?

Biology
Can someone please check my answers for the following 'choose the best answer'? Which of the following cellular functions would be most directly related to a malfunction of the Golgi apparatus? a)ATP production b)degradation of macromolecules c)secretion of proteins d)...

Biology
Can someone please check my answers for the following 'choose the best answer'? Which of the following cellular functions would be most directly related to a malfunction of the Golgi apparatus? a)ATP production b)degradation of macromolecules c)secretion of proteins d)...

Calculus
Please help? Let F(a) be the area between the x-axis and the graph of y=x^2cos(x/4) between x=0 and x=a, for a>0 (consider the area to be negative if the graph lies below the axis). Find the formula for F(a).

Biology
Can someone please check my answers for the following 'choose the best answer'? Which of the following cellular functions would be most directly related to a malfunction of the Golgi apparatus? a)ATP production b)degradation of macromolecules c)secretion of proteins d)...

Including students with special needs
How could you use the notion of behavior functions to understand how students can find and press teachers' "hot buttons"?

Including students with special needs.
How does this approach differ from traditional responses to student behavior?

Including Students with Special needs.
How would understanding the function of a student's behavior influence your response to it?

Mathematics
Identify the slope and y-intercept of the following table values. x 5,10,15,20,25 y -80,-40,0,40,80

Chemistry
Vinegar is a dilute solution of acetic acid. What is the concentration of acetic acid in the vinegar if 26.5 mL of NaOH at 0.250 M are required to neutralize 10.0 mL of vinegar?

Calculus (pleas help!!!)
Oh ok I got it... the local max is 2a/3 and the local min 0....

Calculus (pleas help!!!)
Let p(x)=x^2(a−x), where a is constant and a greater than 0. Find the local maxima and minima of p. (Enter your maxima and minima as comma-separated xvalue,classification pairs. For example, if you found that x=−2 was a local minimum and x=3 was a local maximum, ...

Got it
Got it....

Calculus (urgent!!)
Find a formula for a curve of the form y=e^((−(x−a)^2)/b) for b greater than 0 with a local maximum at x=−5 and points of inflection at x=−8 and x=−2.

Calculus (urgent!!)
Find a formula for a curve of the form y=e^((−(x−a)^2)/b) for b greater than 0 with a local maximum at x=−5 and points of inflection at x=−8 and x=−2.

Calculus Please Help
Find a formula for a curve of the form y=e^((−(x−a)^2)/b) for b greater than 0 with a local maximum at x=−5 and points of inflection at x=−8 and x=−2.

Calculus (pleas help!!!)
Find a formula for a curve of the form y=e^((−(x−a)^2)/b) for b greater than 0 with a local maximum at x=−5 and points of inflection at x=−8 and x=−2.

3rd grade math
divide 25 into 6 equal groups.

Finance
what would be your monthly car payment on a $15000 4 year loan @ 10%. Payments are made at the end of each month

physics
A cannon on a stationery railway truck fires a shell of mass 5 kg with a velocity of 240 m.s -1. The mass of the cannon is 600kg. The cannon recoils and moves back on the rails and collides with a stationery truck of mass 400 kg. The velocity of the cannon after the collision ...

physics
an aeroplane of mass 8000kg flying at 600km.h-1 fires a projectile of mass 100kg at a speed of 900 km.h-1. Calculate the velocity of the aeroplane after firing if the projectile was fired a)forward b) backward

physics
truck A of mass 2,5 x 10(4) kg approaches a second truck B of mass 2 x 10(4) kg with a velocity of 12 m.s -1 and collides with it. After collision the two trucks move apart with equal but opposite momenta. Calculate what the velocity of B was before the collision

physics
A laden lorry of mass 3000kg travelling due east at 40 m.s -1 collides head on with a large truck of mass 2000kg travelling at 30 m.s -1. the two vehicles combine during the collision. Calculate the velocity with which the two wrecks move after collision.]

ss
the americans claimed to fight for liberty and freedom. how did these ideals make women amd enslaved africans question their postitions in society

chemistry
its a problem on my homework but thanks you for showing my what to do. its much appreciated

chemistry
What is the pH of a solution prepared to contain 155 grams of HCl in 200.0 mL? Can you tell me how to do it? I can't remember how...

Physics
Intensity(1) x Area(1) = Intensity(2) x Area(2) 109.7 x (pi(26.8)^2) = Intesity(2) x (pi(8500)^2) Intensity(2) = 1.09 x 10^-3

philosophy
Supply the missing premise or conclusion of the ff. enthymeme in such a way that the resulting syllogism is valid. Write the resulting syllogism in standard form and test it for validity using a Venn diagram. What things would you take into account in evaluating it? Question: ...

philosophy
Supply the missing premise or conclusion of the ff. enthymeme in such a way that the resulting syllogism is valid. Write the resulting syllogism in standard form and test it for validity using a Venn diagram. What things would you take into account in evaluating it? Question: ...

philosophy
Thank you so much Octavio. I appreciate your help. I wonder what program you're taking. Maybe i can be of help to you in some courses i've taken and maybe you're yet to take.

philosophy
Thanks. It's my first time using this site and wanted to see what suggestions i might get. What i come up with is.. Legislation that cannot be enforced are disrespect for the law. All marijuana possession are disrespect for the law. Therefore, disrespect for the law are ...

philosophy
Supply the missing premise or conclusion of the ff. enthymeme in such a way that the resulting syllogism is valid. Write the resulting syllogism in standard form and test it for validity using a Venn diagram. What things would you into account in evaluating it? Question: ...

physics
Vt=rw r=Vt/w so: r = 60m/s÷[56rev/s(2πrad/1rev) r=0.17 m

Chemistry
Substance A has a melting point of -10 degree celcius and a boiling point of 57 degree celcius. Sunstance B has a melting point of -67 degree celius and a boiling point of 15 degree celius. Room temperature is 20 degree celcius. (A) What is the physical state of substance A at...

physics
in what direction should a force be applied to produce maximum torque.?

math
you have to list all the different possibilities in your paper. 5women 1man 4women 2men try different combinations of 6 members where there is always more women than men

Math
I need to solve for t in the following expression. A/(1+B^t/2) = C using logarithms. how do I get started

Math analysis
thanks :)

Math analysis
I have a problem that says to Use the laws of logarithms to expand and simplify the expression. ln(x(x + 1)(x + 2)) .. I keep getting ln(x)+ln(x^2+3x+2) but I'm wrong. What im i doing incorrectly?

economics
Formula is: P2-P1 _________ (P2+P1)/2 I got some of the calulation: Percentage change in P= .20 Quantity/.4 Price Elasticity of Demand = 0.5 P2-4 _______ = 0.5 (P2+4)/2 How can I resolve this ecuation?

economics
Studies indicate that the price elasticity of demand for cigarettes is about 0.4. If a pack of cigarettes currently costs $4 and the government wants to reduce smoking by 20 per cent, by how much should it increase the price? Show your calculations. (b) If the local government...

physics
A brick is thrown upward from the top of a building at an angle of 15° to the horizontal and with an initial speed of 16 m/s. If the brick is in flight for 2.8 s, how tall is the building?

1st grade
there were 3 dogs and only two bones oh no,what shall we do!!

North & Central America
canals affect which of the 5 themes of geography the most

physics
A certain freely falling object requires 1.25 s to travel the last 35.5 m before it hits the ground. From what height above the ground did it fall?

physics
Races are timed to an accuracy of 1/1000 of a second. What distance could a person rollerblading at a speed of 8.5 m/s travel in that period of time?

physics
TWO LOCOMOTIVES APPROACH EACH OTHER ON PARALLEL TRACKS. EACH HAS A SPEED OF 95KM/H WITH RESPECT TO THE GROUNG. IF THEY ARE INITIALLY 8.5KM APART, HOW LONG WILL IT BE BEFORE THEY REACH EACH OTHER?

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