# Posts by ANONYMOUS

Total # Posts: 109,557

physics
the linear expansively of the material of a cube is 12*10-6k. if the length of each side of the cube is 10cm,find the area of one face of the cube and the volume of the cube when its temperature is raised by 30k

Health Care Statistics
A census is defined as which of the following? A. A collection of data B. A survey conducted with a small group C. A bureau of research specialists D. A count of a particular population B. I did my studying and it sows survey but I am hesitant of the choice since its saying ...

Physics
85-65 = 20 = half a wavelength 183 - 123 = 60 = 1 1/2 wavelengths natch ;) so wavelength = 40 cm = 0.40 meters period = 1/779 seconds so speed = distance/time = .4 *779 = 311.6 m/s awful cold there

Physics
Two speakers send out sound in phase at a frequency of 779 Hz. When you are the same distance from both speakers you hear a maximum sound. Moving around, you hear essentially no sound when you are 65 cm from one and 85 cm from the other, and again when you are 123 cm from one ...

Physics
Two instances during which the heating effects of electric current is not required pls

math
An elevator starts out at the 1st floor. It goes up 4 floors, down 2 floors, up 5 floors, down 3 floors, up 2 floors and stops. What floor is it now on?

Math
A student is asked to find positive integer solutions to this equation: 2 * 3 ?x = 5 ?y What is the smallest possible value of xy? (Please show working out, thank you.)

Math-Algebra
Tony asked his friend to guess his mathematics test score. He gave these hints to help his friend guess: -It has two digits -The digit in the tens place is two more than twice the digit in the ones place. -The number formed by reversing the order of the digits is 5 more than 3...

math
a + bc = -1 b + ac = -1 c + ab = -1 Which of these values of 'a' is one solution for this system of equations? A) -2 B) -1 C) 0 D) 2 Please also explain how you got the answer, thanks.

Time rates
sand is being dragged at the rate of 10m^3/min into a conical pile. if the height of the pile is always twice the base radius, at what rate is the height increasing when the pile is 2m high?

satistics
Suppose that the antenna lengths of woodlice are approximately normally distributed with a mean of 0.2 inches and a standard deviation of 0.05 inches. What proportion of woodlice have antenna lengths that are more than 0.27 inches? Round your answer to at least four decimal ...

math
hailey is tryin to win the grand prize spinnin a wheel labeled 1 throuh 6 and hope she gets a 5 or should she roll a 2 and hope she gets the same number onb both cubes explain

math-precalculus
A person starts walking from his home. First, he goes 2 miles north and 3 miles west to a park. After spending the afternoon at the park, he walks 1 mile west and 4 miles south to a bar. How far is the bar from his home?

math
a farmer examines 25 cartons of eggs 3 contain cracked eggs whats the best prediction that in the number of cracked eggs in the delivery of 500

Math
a farmer examines 25 cartons of eggs 3 contain cracked eggs whats the best prediction that in the number of cracked eggs in the delivery of 500

algebra 2
the two numbers is 9, the sum of their squares is 41. what is the lager number

economics(gentle man) thankyou
i have already done their graph but i want their mathematical expression

economics(gentle man) thankyou
Define the following term using graphs and mathematical expression a)utility b)util c)iso cost d)indiffernce curve e)budget line f)monopolist g)kiked demand curve h)social exploitation i)profit j)perfect competation market.

ECONOMICS(help!)
Prove that the profit maximation of the consume i.e MU=P,according to cardinalist using mathematical derivation.

Economics(help!)
Suppose you are the manager of a watch-making firm operating in a comptetive market.You cost of production is given by C=100+Q^2,Where Q is the level of output and C is total cost. a)If the price of watches is birr 60,how many watches should you produce to maximize profit? b)...

clothing and textile
What is conspicuous and inconspicuous facing

physics
Instances where the heating effect of current is not required. Plssss helllp

physics
Instances where the heating effect of current is not required. Plssss helllp

algebra
What was the error in my calculation on B?

algebra
Forgot to post the Modeled by part: h = -16t^2 + 60t

algebra
back from break, need help again The height , h, in feet, of a bottle rocket is modeled by: where t is the time in seconds. A. Factor the expression. H = -16t^2 + 60t = 4t(-4t + 15) B. What is the height of the rocket after 2 seconds? When t = 2 H = 4t(-4 times 2 + 15) = 28 C...

MATH
A theater has a seating capacity of 1050 and charges \$5 for children, \$7 for students, and \$9 for adults. At a certain screening with full attendance, there were half as many adults as children and students combined. The receipts totaled \$7650. How many children attended the ...

Math
write the equation of the hyperbola in graphing form from the given information: Vertices at (2,0) and (-2,0); foci at (3,0) and (-3,0)

Algebra
(need help with checking answers) The height , h, in feet, of a bottle rocket is modeled by: h = -16t^2 + 60t where t is the time in seconds. A. Factor the expression. H = 16t^2 +60 = 4(4t^2 + 15) B. What is the height of the rocket after 2 seconds? H = 4(4 times 2^2 + 15) = ...

Science
You Add a g to My word and I disappear so what word AM I?

physics
Which of the substances Exhibited the greatest molecular forces between water,acetone,methylated spirits and sunflower oil???

physics
A person standing on a vertical cliff a height h above the lake wants to jump into the lake but notices a rock just at the surface level with its furthest edge a distance s from the shore .The person realizes that with a running start it will be possible to just clear the rock...

Math
In fig AB=AC NB and angle ACD= 110 find angle A

Math
-10 is greater than -7

English
What does the child think about his drawing in the poem

Algebra
The height , h, in feet, of a bottle rocket is modeled by: H = -16t^2 +60t where t is the time in seconds. A. Factor the expression. B. What is the height of the rocket after 2 seconds? C. What is the height of the rocket after 3.75 seconds? Explain the solution.

Algebra
The height , h, in feet, of a bottle rocket is modeled by: where t is the time in seconds. A. Factor the expression. B. What is the height of the rocket after 2 seconds? C. What is the height of the rocket after 3.75 seconds? Explain the solution.

physics
A ball is dropped downward after 1 sec its velocity is 20m/s another ball is dropped from the same point after 2 sec its velocity will be

english
What is the purpose of a response-to-literature essay

history
What were some of the strategies that the NAACP and others employed to influence President Roosevelt and the government?

stat
wolf has an average weight of 44 lbs. with a standard deviation of 3 lbs. what percent of wolves weigh under 40 lbs.?

Physics 1st paper
Two vectors of magnitude 8 unit each are acting at a point making an angle120 degree with each other.determine the magnitude

Maths
If sina+7sinb=4 (sinc+2sind) and cosa+7cosb=4 (cosc+2cosd), how do I prove that 2cos(a-d) =7cos(b-c)?

phisical science
what is the role of mass in newtons second law?

chemistry
Write the anode reaction for the electrolysis of the concentrated zinc chloride solution using zinc electrodes

Calculus
S=integral sign S3x(4-x^2)^1/2 use trig substitution I am confused I got x sin(sin^-1(x/2))+cos(sin^-1(x/2))

Calculus
(1,1)(2,1)(2,3) mirror Revolve around y-axis. solve with Shell and washer please and thank you! Made a correction for washer would R(x)=2x-1 ? what about r(x)

Calculus
revolve around y

Calculus
(1,1)(2,1)(2,3) mirror around y-axis & revolve solve with Shell and washer please and thank you

math
Express this ratio as a fraction in its lowest term ?25cm to 3m.

Algebra
1. Draw an algebra tile model for the polynomial in simplified form: 8x^2 - 4x -3x^2 + 6 + 2x -7 8 big blue squares, 4 bars, 3 big red squares, 6 little yellow squares, 2 green bars, 7 little red bars; (is this correct?) 2.Study the diagram of algebra tiles below. 3 big blue ...

Health Care Statistics
swing bed hospital is more on the same side of what i was thinking

Health Care Statistics
long term care hospital is more reasonable choice?

Health Care Statistics
A hospital that is allowed to use its beds for either acute care or skilled care is referred to as a _____. A. Swing bed hospital B. Tertiary care hospital C. District hospital D. Long term care hospital E. None of the above, it should be

Health Care Statistics
Computers are great for performing statistical calculations, but they must be programmed accurately to calculate correctly. When is statistical data considered “garbage” and how do you correct it? help?

geomtry
A parallelogram is transformed according to the rule (x, y) â†’ (x, y). Which is another way to state the transformation

Math
A map has a scale of 2 cm for every 25 miles. The distance on the map between Griffin Park and the San Diego Zoo is 10 cm. How far is the actual distance?

Physics
Two particles are moving in a plane; one has the velocity component vix=1m/s, viy=5m/s and the other has the velocity components v2x=4m/s and v2y=3m/s if both started from the same point what is the angle between their paths

physics
a boat heads directly across a river with a speed through the water 8m/s. the river current is 2m/s a. what is the magnitude and direction of the boat velocity relative to the earth? b.when the boat reaches the other bank, how far will it be?

math-precalculus
Eliminate the parameter t to find a Cartesian equation in the form x=f(y) x(t)=4t^2 y(t)=4+2t

Chemistry - Naming
What would be the name of this compound? Si4Br8

Chemistry - Ionic Compounds
List all possible unit formulas (chemical formulas) that can be constructed by the formation of binary ionic compounds from the following elements. (Separate substances in a list with a comma.) Br (Z = 35), Sr (Z = 38), Ca (Z = 20), Ga (Z = 31), O (Z = 8) Please help! I have ...

maths
It costs a publishing company \$50000 to make books. The \$50000 is a fixed cost or a cost that cannot change. To help the publishing company sell the books, a marketing company charges \$4 for each book sold. If the company sells the book for \$9 each, how many books should they ...

Math
Solve using eliminating method2) 3x-5y=15 x-2y=8

math
a one meter square sheet of cardboard is cut into the maximum number of squares of side one millimeter. If these squares would be laid side by side, how far would they stretch?

Math
There are 9 bottles in the refrigerator. Each bottle holds liter of juice. How many liters of juice are in the refrigerator? A student solved the problem this way: There are 6 liters of juice in the refrigerator. Use a similar strategy to solve this problem. Each boy had cup ...

math
solve the following equation: k/2 - k/5 - k/6 =2

math
349

Geography
In aerial photography and remote sensing image interpretation involves analysis of a series of key visual elements. Discus at least six of these elements

Science
given, distance l=400m u=54kmph a=-0.3m/s2 u=15mps v=u+at t=v-u/a t=15s avrage velocity=7.5m/s distance s = 7.5/15=375m total distance=400m-375m=25m

Science
given, distance l=400m u=54kmph a=-0.3m/s2 u=15mps v=u+at t=v-u/a t=15s avrage velocity=7.5m/s distance s = 7.5/15=375m total distance=400m-375m=25m

math-probability
Bob buys three tickets in a raffle in which 500 tickets are sold. What is the probability of him winning" a) 1st prize b) 1st and 3rd prize c) 2nd and 3rd prize Helping me with either a, b, or c should help me answer the other questions, thanks.

math-probability
In a 16 horse race, what is the probability of choosing the winning trifecta? (Disregard odds on horses)

math-probability
Is there a fast way to list all the possible permutations for the letters A B C D? This also includes AAAA, BBBB, CCCC, DDDD, ABBB, ACCC, ADDD, etc

math
write an equation in standard form for the ellipse with foci (7,0) and (-7,0) and y intercepts 6 and -6

math
Sarah taking a 4 week holiday, Sarah received a payment of \$2444. Which represented her holiday loading (17.5%) plus her usual pay over the 4 weeks. Calculate her yearly salary (excluding the 17.5% holiday loading)(1year=52 weeks)

Algebra
how many different two letter arrangements can you man using the letters a,b,c,d,e

math
Round the following percentage to two decimal places. 0.068%

Algebra
Janice can type in 30 min Bianca can type in 45 min how long if they work together

Confidentiality in Allied Health
Yolanda is reviewing a medical record for a patient who is receiving psychotherapy. As a part of her training in medical record confidentiality, she is aware that there are special guidelines regarding psychotherapy notes. Which of the following statements is true of these ...

Math
david is comparing two different phone plans. Chatty box has a flat rate of 2 cents per minute. celltalk charger 15 cents per call plus 1 cent per min at what minute will both companies charge the same amount of money?

Calculus
the region D is the triangle with vertices (1,1) (3,1) (3,2) about the y-axis find r(x) and h(x) using the shell method. My teacher got r(x)=x and h(x)=(1/2x+1/2)-1 but how did he get the equation for h(x)??

math
a machine paints 340 toy boats in 45 minutes which expression equals the unit rate per hour

Cruz
12 m

Probability and math statistics
We have two coins, C0 and C1, that looks identical but have different probabilities (0.5 and 0.7 respectively) of showing Heads. A coin is chosen at random and then is tossed X times until a Head comes up. Denote by H0 and H1 the hypotheses that the chosen coin is C0 and C1 ...

math
Express this ratio as a fraction in its lowest term ?25cm to 3m.

Algebra
Use the figure to answer the following questions: ( a triangle with the bottom right corner of it labeled L with (1, 1) x y coordinates. Left corner of the triangle is labeled M at the (-3, 1) coordinates. the top of the triangle is labeled K at the (-2, 5) coordinates. A. ...

math
You return from a trip with 250 European euros. How much are your Euros worth in U.S Dollars U.S dollars per eurpoean euros European euros per U.S. dollars 0.9251

math
a new sidewalk will be 6 feet wide 160 feet long and filled to a depth of 9 inches 0.75 foot with concrete, ow many yards of concrete are needed? the new sidewalk needs_______ cubic yards of concrete

english
In at least one hundred words, explain how Lessing’s childhood experiences may have influenced her storytelling in "Through the Tunnel."

math
A model of a rectangular patio at a landscaping business will be enlarged by a scale factor of 2 when it is installed in a customer’s back yard. The area of the new enlarged patio will be 160 square feet. Which is the area of the landscaper’s model? 10 square feet 20...

physics
236

maths
If tan A=a/b prove that 2sec theta + 1/ cos theta+2=Õ a2+b2/b

Physics
The relative density of an alloy is 6.5.a.find the mass of a solid cube of side 20cm.b.what volume of the alloy has a mass of 13kg

Math
In Virginia, the Grand Caverns is approximately 35 kilometers from the Frontier Culture Museum. You make a drawing of the two locations with a scale of 6 inches representing 35 kilometers. How far apart do you draw the Grand Caverns and Frontier Culture Museum?

Maathhh
30 students surveyed, 30% said their favorite juice was grape. How do I find out how many students that is?

Algebra
(i am new to this subject of algebra) Use the figure to answer the following questions: ( a triangle with the bottom right corner of it labeled L with (1, 1) x y coordinates. Left corner of the triangle is labeled M at the (-3, 1) coordinates. the top of the triangle is ...

Math - Please help ASAP!
The second one is B

math
s,e,l,e,c,t,e,d are in the bag allen picked a letter.What is the fraction,decimal,and percentage of not selecting a consonant

chemistry
how to calculate the oxidation state for 'cr' in K2CRO4 ?