Saturday

August 23, 2014

August 23, 2014

Total # Posts: 69,781

**English**

Which words nearly opposite meanings? A.finished, responded<---- B.indifferent, excited C.lingering, invited D.sorry, available
*June 5, 2014*

**MATH**

Write the quadratic function in standard form (if necessary) and sketch its graph. Identify the vertex h(x)=x^2-9
*June 5, 2014*

**Math**

Thank you very much, Steve.
*June 5, 2014*

**Math**

Can you show me how to solve it, please.
*June 5, 2014*

**Math**

Jane ran around the perimeter of a rectangular park at a constant rate of 10 feet per second. The park has an area of 67,500 square feet, and its length is exactly three times its width. For how many seconds did Jane run? F. 60 G. 120 H. 240 J. 360 K. 480
*June 5, 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 4, 2014*

**Science**

What are the personal, societal, and scientific implications of alpha-1 antitrypsin deficiency? I googled, but couldn't find any info on this????? please help!!!!!!!!!!1
*June 4, 2014*

**physics**

A 49-g bullet traveling at 290m/s penetrates a block of ice at 0∘C and comes to rest within the ice.Assuming that the temperature of the bullet doesn't change appreciably, how much ice is melted as a result of the collision? The heat of fusion of water is 333 kJ/kg.
*June 4, 2014*

**physics**

When a 310-g piece of iron at 180∘C is placed in a 95-g aluminum calorimeter cup containing 250 g of liquid at 10∘C, the final temperature is observed to be 32∘C. The value of specific heat for iron is 450 J/kg⋅C∘, and for aluminum is 900 J/kg&#...
*June 4, 2014*

**physics**

The value of specific heat for copper is 390 J/kg⋅C∘, for aluminun is 900 J/kg⋅C∘, and for water is 4186 J/kg⋅C∘.What will be the equilibrium temperature when a 275g block of copper at 255∘C is placed in a 145g aluminum calorimeter cup...
*June 4, 2014*

**physics**

An automobile cooling system holds 16 L of water. The specific heat of water is 4186 J/kg⋅C∘.How much heat does it absorb if its temperature rises from 16∘C to 94∘C?
*June 4, 2014*

**physics**

A certain power plant puts out 520MW of electric power.Estimate the heat discharged per second, assuming that the plant has an efficiency of 34%
*June 4, 2014*

**physics**

How much heat (in joules) is required to raise the temperature of 39.0kg of water from 25∘C to 95∘C? The specific heat of water is 4186 J/kg⋅C∘.
*June 4, 2014*

**physics**

The exhaust temperature of a heat engine is 250∘C .What must be the high temperature if the Carnot efficiency is to be 35% ?
*June 4, 2014*

**Physics**

A football player punts the ball at a 45.0o angle. Without an effect from the wind, the ball would travel 60.0 m horizontally. (a) What is the initial speed of the ball? (b) When the ball is near its maximum height it experiences a brief gust of wind that reduces its ...
*June 4, 2014*

**Math**

A polygon is a __ dimensional figure with ___ or more sides. A regular polygon has equal ____ lengths and equal ____ measures
*June 4, 2014*

**Precalculus**

1. permutation or combination: how many schedules are possible if you need to choose 5 events out of 20 for a vacation? Is it permutation?? Answer is 1860480? 2. a. How many area codes are possible ( the 3 digit number can't start with a 0)? 504? b. How many area codes ...
*June 4, 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 4, 2014*

**MATH PLZ HELP**

oh, thankyou:)
*June 4, 2014*

**MATH PLZ HELP**

I said one friend. not all of us combined I also said that one person steals a cookie every 15 min. srry for the confusion
*June 4, 2014*

**MATH PLZ HELP**

there are 3 friends staying at my house. forgot that piece of info.
*June 4, 2014*

**MATH PLZ HELP**

I baked two dozen cookies (24)for my friends. After they came out of the oven at 2:00, I wait for them to cool. When playing video games, one friend says he needs to use the bathroom. he instead goes to the kitchen and steals one cookie. To have an excuse for going to the ...
*June 4, 2014*

**science**

As part of their job, meteorologists use data to make weather predictions. How accurate are their predictions? What are other scenarios in which you would use data to make a prediction? How would you defend your prediction using data? can you please tell me in your perspective?
*June 4, 2014*

**english**

i think its b or c
*June 4, 2014*

**english**

Originating in Bohemia
*June 4, 2014*

**english**

Which term best describes the underlined words? Originating in Bohemia, the polka was first developed around 1830. A. infinitive phrase B. participial phrase C. gerund phrase
*June 4, 2014*

**Math**

28 - 12 = 16 16 / 12 = 4 / 3 or 4:3 C.
*June 4, 2014*

**Math**

Thank you so much, Damon.
*June 4, 2014*

**Math**

If pq = 3, then p^3q^4 + p^4q^5 = A. 12q B. 7p + 9q C. 12p + 20q D. 96p E. 108q
*June 4, 2014*

**accountancy**

1067
*June 4, 2014*

**physics**

What is the kinetic energy of a 19 kg dog that is running at a speed of 7.7 m/s (about 17 mi/h)?
*June 4, 2014*

**Math**

Thank you very much :).
*June 4, 2014*

**Math**

A bag contains 7 black socks, 12 white socks, and 17 red socks. If you pick one sock at random from the bag, what is the probability that it will NOT be white? A. 1/2 B. 2 / 3 C. 3 / 4 D. 7 / 12 E. 7 / 36
*June 4, 2014*

**Geometry**

what is it?
*June 4, 2014*

**Trig**

Find the coterminal angles: one positive one negative angle. 55° and (9(3.14)/5) answer degrees in radians and radians in degrees
*June 4, 2014*

**Math**

Thank you Steve.
*June 4, 2014*

**Math**

tan0 and sin0
*June 4, 2014*

**Math**

If tanè = 4 / 3, then sinè = F. 3 / 4 G. 3 / 5 H. 4 / 5 J. 5 / 3 K. 5 / 4
*June 4, 2014*

**math**

Find the total number of compounding periods and interest rate per period. Princial: $700, time period :8yrs , nomial rate: 1.5%, interest compounding :monthly, copounding amount________, compound interest_______ * i need to figure outhe compounding amount & ...
*June 4, 2014*

**assessment**

What statistical technique is often used to calculate an estimate of reliability?
*June 4, 2014*

**MATH**

Solve the fractional equation 3x/2+1/4(x-2)=10
*June 4, 2014*

**trig angle of elevation**

The eyes of a basket ball player are 6 feet above the floor. He is at the free-throw line, which is 15 feet from the center of the basket rim. The center of the rim is 10 feet above the floor Before shooting the player decides to step back a few steps. His angle of elevation ...
*June 4, 2014*

**Math please help**

Solve the equation x^2/5 + x^1/5 -6=0
*June 4, 2014*

**Algebra **

Solve the equation 6(1/x)^2-7(1/x)+2=0
*June 4, 2014*

**Algebra**

Solve the equation x^2/5 + x^1/5 -6=0
*June 3, 2014*

**chemistry**

What is the molarity of a 28.9 g of CaCl2 dissolved in water to make up 0.78L of solution?
*June 3, 2014*

**Math**

Find the total number of compounding periods and interest rate per period. Terms investment: 6years, nomial rate: 18%, interest compounding :monthly, compounding period________, rate per period %_______ * i need to figure out the compounding period & rate per period%
*June 3, 2014*

**MATH**

Is the equation identity or conditional? 3(x+2)=3x+6 3(x+4)=3x+4
*June 3, 2014*

**Algebra **

Add and subtract the rational expression and simplify. -3y/8x+7y/6x -1y/12x
*June 3, 2014*

**boring math**

A business purchases a piece of equipment for $25000. The equipment will be replaced in 10 years at which time its salvage value is expected to be $2000. Write linear equation giving the value V of the equipment during the 10years.
*June 3, 2014*

**chemistry**

Calculate the molarity (M) of AlCl3 in a solution prepared by adding 0.750 L of 0.7 M AlCl3 and 0.250 L of 0.1 M AlCl3 . Assume volumes are additive
*June 3, 2014*

**random question about writing**

Im very bad at writing and my grammar is very bad too. can any writing tutor gave me tips to improve?
*June 3, 2014*

**linear math**

Is the equation identity or conditional? 3(x+2)=3x+6 3(x+4)=3x+4
*June 3, 2014*

**math**

simplify as much as possible. Assume that all variables represent positive real number 4x√32xv^2 + v√2x^3
*June 3, 2014*

**math**

I did make a sketch, I just used the wrong function, thank you
*June 3, 2014*

**math**

The eyes of a basket ball player are 6 feet above the floor. He is at the free-throw line, which is 15 feet from the center of the basket rim. The center of the rim is 10 feet above the floor Determine the angle of elevation (to the nearest degree) from his eye to the center ...
*June 3, 2014*

**math**

Thank you reiny:)
*June 3, 2014*

**math**

Stuart estimates that he will need $25000 to set up a small business in 7years.How much must stuart invest at 12% interest compound quarterly to achieve goal?
*June 3, 2014*

**math 1 question!!!!!!**

Got it its B
*June 3, 2014*

**math 1 question!!!!!!**

D?
*June 3, 2014*

**math 1 question!!!!!!**

Which situation best represents a proportional relationship? (1 point) Kelly sold 2 rings for $3 and 3 rings for $6.<----- Lawrence packed 27 plates in 9 boxes and 81 plates in 27 boxes. Jeff ran 4 miles in 20 minutes and 6 miles in 24 minutes. Francesca placed 8 pencils in...
*June 3, 2014*

**math 1 question!!!!!!**

Which is equivalent to the expression shown when a > 0 and b > 0? -21a^2b/35ab A. 3a/5 B. -3a/5 C. -3ab/5 D. 3a/5b<---
*June 3, 2014*

**math**

Direct variation Y is proportional to x. Use the x value & y value to find a linear model that relates y and x. x=5, y=9 X=11, y=1.5
*June 3, 2014*

**math 1 question!!!!!!**

Im right?
*June 3, 2014*

**math 1 question!!!!!!**

my answer is B?
*June 3, 2014*

**math 1 question!!!!!!**

A fence encloses a rectangular field. The field is 4 meters longer than it is wide. The total length of the fence is 144 meters. What is the area in square meters of the enclosed field? 1192 1296 1292 1440
*June 3, 2014*

**math 1 question!!!!!!**

Tasha is going on a picnic. The probability that it will be sunny is 2/3. The probability that someone will bring potato salad is 7/9. What is the probability that it will be sunny and that someone will bring potato salad? 1/9 4/27 14/27 6/7<------
*June 3, 2014*

**MATH**

Yes
*June 3, 2014*

**MATH **

Slope : 3/2; y-intercept : (0,3)
*June 3, 2014*

**MATH Graph**

Sketch the graph of line y=1/2x+1
*June 3, 2014*

**Math**

A fence encloses a rectangular field. The field is 4 meters longer than it is wide. The total length of the fence is 144 meters. What is the area in square meters of the enclosed field? 1192 1296 1292<---- 1440
*June 3, 2014*

**statistics**

the breaking strength (in pounds) of a certain new synthetic is normally distributed, with a mean of 125 and a variance of 25. The material is considered defective if the breaking strength is less than 113 pounds. What is the probability that a single, randomly selected piece ...
*June 3, 2014*

**Physics**

Calculate the maximum deceleration of a car that is heading down a 30.0° slope (one that makes an angle of 30° with the horizontal) under the following road conditions. You may assume that the weight of the car is evenly distributed on all four tires and that the ...
*June 3, 2014*

**Math**

The ratio of adults to girls to boys on a class field trip was 1:4:5. If the trip included 6 more boys than girls, how many adults were with the group? A. 3 B. 4 C. 6 D. 8 E. 12
*June 3, 2014*

**physics**

and also how do you know to use the tan of 10
*June 3, 2014*

**physics**

I am confused with c where did the 45 degrees come from
*June 3, 2014*

**physics**

A passenger on a train notices that a 2.00 kg mass is displaced 10.0° from the vertical as the train accelerates. (a) What is the acceleration of the train? (b) What would the acceleration be if the mass was 5.00 kg? c. What would angle have to be to indicate a horizontal ...
*June 3, 2014*

**Math**

Thank you
*June 3, 2014*

**Math**

J. 1.25
*June 3, 2014*

**Math**

If f(x) = x^2 + 9 and g(x) = 24 + 4x, what is the value of f(4) / g(-1)? F. 0.75 G. 0.8 H. 1.2 J. 1.25 K. 1.75
*June 3, 2014*

**Scientific notation**

a microscope is set so it makes an object appear 4 x 10`2 times larger than its actual size. A virus as a diameter of 2 x10`-7 meter. ow Large will the diameter of te virus appear when it is viewed under te microscope?
*June 3, 2014*

**Scientific notation**

a rectngler section of land made of wheat farms has a length of 5 x 10`4 meters and a width of 6 x10`3 meters. What is the area of land in square meters?
*June 3, 2014*

**Scientific nottion**

3x10`6 square meters
*June 3, 2014*

**Math**

Thank you Reiny.
*June 3, 2014*

**Math**

Two values of m satisfy the equation |5m - 11 | - 3m = 9. What is the result when you multiply these two values together? F. 2.5 G. 2.75 H. 3.2 J. 3.75 K. 4.25
*June 3, 2014*

**math**

a clock reads 4:00 pm. how many degrees will the minute hand turn in 15 minutes?
*June 3, 2014*

**travis**

What is the IMA of this simple machine if A=5m B=11m, and C=12m
*June 3, 2014*

**Physics**

Consider the 52.0-kg mountain climber in the figure to the right. Find (a) the tension in the rope and (b) the force that the mountain climber must exert with her feet on the vertical rock face to remain stationary. Assume that the force is exerted parallel to her legs. Also, ...
*June 3, 2014*

**Physics**

Calculate the maximum deceleration of a car that is heading down a 30.0° slope (one that makes an angle of 30° with the horizontal) under the following road conditions. You may assume that the weight of the car is evenly distributed on all four tires and that the ...
*June 3, 2014*

**Physics**

A passenger on a train notices that a 2.00 kg mass is displaced 10.0° from the vertical as the train accelerates. (a) What is the acceleration of the train? (b) What would the acceleration be if the mass was 5.00 kg? c. What would angle have to be to indicate a horizontal ...
*June 3, 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 3, 2014*

**math**

Copy of Consider the charged particle S2- Match the first column with the correct number in the second column. Note: •The same number may be used more than once, if necessary.. •Not every number will be used.
*June 3, 2014*

**Math**

Thank you so much, sir.
*June 3, 2014*

**Math**

If the height of an equilateral triangle is 9, what is its area? F. 27 G. 54 H. 81 J. 27 sqrt(3) K. 54 sqrt (3)
*June 3, 2014*

**algebra**

if t equal tip and meal meal write a function using a 13% tip
*June 3, 2014*

**English**

Are sitcom titles italicized or underlined?
*June 3, 2014*

**math HELP!!!!!!**

Suppose 10% of the flights arriving at an airport arrive early, 60% arrive on time, and 30% arrive late. Valerie used the random-number table to find the experimental probability that of 5 flights, at least 2 will arrive late. The digit 0 represents flights arriving early. The...
*June 2, 2014*

**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*

**Algebra **

I have about 3 homework problem that I am stuck on! please help me. #1: The area of a rectangle is 16, and its diagonal is \sqrt{68}. Find its dimensions and perimeter. (x^2)+(y^2)=\sqrt{68} (x^2)+(y^2)=8.246 xy=16 y=16/x (x^2)+(16/x)^2=8.246 (x^4)+(96/x)=8.246 Then I got ...
*June 2, 2014*

**trig**

To guard against a fall, a ladder should make an angle of 75o or less with the ground. What is the maximum height that a 20-foot ladder can reach safely to the nearest tenth of a foot? in my diagram I set it up using the sin function since I want to find the height so I did (...
*June 2, 2014*

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