# 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?