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In rectangle PQRS, diagonal PR makes a 60 degrees angle with side PS. If PR =10, what is the area of the rectangle?
1. 2 answers
2. 580 views
_____________ is a biologically based style of interacting with the world that exists from birth. Fill in the blank.a. Culture
1. 1 answer
2. 910 views
What is the best explanation of the universal perspective in culture?a. Survival is related to the degree that people can adapt
1. 1 answer
2. 881 views
What is a comprehensive theory on the structure of personality that contributes to our knowledge about the origins of
1. 4 answers
2. 908 views
What would be a concern to take into consideration when interpreting data from cross-cultural studies?a. Effect sizes b. Whether
1. 1 answer
2. 599 views
In Wells, The War of the Worlds which of the following explains what made the humans so complacent?1 Early in the 20th century
1. 1 answer
2. 1,146 views
In Wells, The War of the Worlds which of the following explains what made the humans so complacent?
1. 1 answer
2. 476 views
What is a Reaction that you would expect when acetylsalicylic acid (aspirin) is heated in the presence of a CONCENTRATED acid?Th
1. 1 answer
2. 669 views
If a reaction has rate constant of 1.33 s^-1 at 206 deg C and an activation energy of 58.6 kj mol^-1. whats the rate constant at
1. 1 answer
2. 423 views
Hello,Please help me with this question! Which dilution would turn 10% (by mass) HCl solution into 0.100 M HCl solution? Density
1. 1 answer
2. 609 views
A Honda Civic travels in a straight line along a road. Its distance x from a stop sign is given as a function of time t by the
1. 2 answers
2. 1,629 views
Need help with Ethics and moral reasoning Reading Quiz 4
1. 4 answers
2. 606 views
I need help solving for x here (I don't get the right answer, which is supposed to be x=0.137)3.88 = 3.74 + log (x/0.1) Please
1. 1 answer
2. 478 views
What are the consequences of using only a very dilute solution of HCl or a very concentrated solution of HCl in attempting to
1. 1 answer
2. 503 views
The life of a blood pressure monitor has a normal distribution with an average of 40 years and a standard deviation of one year.
1. 2 answers
2. 561 views
A sled of mass 9.0 kg is sliding across a frozen lake with a speed of 5.0 m/s. A package of mass 4.0 kg is dropped onto it from
1. 1 answer
2. 579 views
There are several genes that control eye color; eye color is therefore called a (A) Polygenic trait.Besides genes that directly
1. 1 answer
2. 976 views
13a+9b-2a-4b
1. 2 answers
2. 461 views
Solve the differential equation dy/dx=3x^2y^2 with the condition that y(1)=4.I know that y= -1/(x^3 + c) but what do I do with
1. 1 answer
2. 3,267 views
The marginal revenue for x items in dollars is given by R′(x)=−4.5x+6. Determine (a) the revenue function and (b) the demand
1. 0 answers
2. 990 views
Find f(x) if f′(x)=(−3)⋅x+(−1) and f(−4)=−1.I know if you find the antiderivative of f'(x) it is -3x^2/2 - x + c but
1. 1 answer
2. 390 views
The rate at which an item depreciates is proportional to its value at that instant. If an item is presently values at $70,000
1. 2 answers
2. 617 views
How long must 4500 dollars be left on deposit at 8 percent compounded quarterly to reach a total accumulation of 15825 dollars?I
1. 3 answers
2. 465 views
Solve for x log(base6)(x+3)−log(base6)(x−5)=2.I tried to factor out the log(base6) and got (x+3)^x/(x-5)=2, but I don't know
1. 4 answers
2. 453 views
Find A so that5log(base5)16807 − 3log(base5)7 = log (base5)A I don't even know how to start this one...should I remove the 5
1. 3 answers
2. 555 views
Using log2=.3010 and log5=.6990 computelog2000000. 100000/5 = 20000 so I just did 20000*.699 = 13980 and then added .301 which
1. 3 answers
2. 662 views
Use the Laws of logarithms to rewrite the expression log(1000000x^19)in a form with no logarithm of a product, quotient or
1. 2 answers
2. 1,260 views
f(x)=[3x^13]e^(−7x)On which intervals is the function concave up and concave down? I know when you find the 2nd derivative,
1. 4 answers
2. 686 views
The quantity Q of radioactive carbon remaining in a 200-gram wood sample at time t is given by the expressionQ(t)=200e^(−0.000
1. 2 answers
2. 632 views
How much should be deposited into an account today if it is to accumulate to $32400 in 30 years if the account bears interest at
1. 2 answers
2. 469 views
Poli 761 (a fictitious substance) decays by about 7% every day. How much of a 88 pound sample remains after 9 days?
1. 3 answers
2. 509 views
Why does 2ln6 - 2ln3 = ln4?
1. 2 answers
2. 2,534 views
Write the inequality and solve:The product of a number and 7 is less than 28
1. 1 answer
2. 438 views
Evaluate ∫(2x^3/√(1-x^4))dxI can't figure out what u and du is... please help thanks
1. 3 answers
2. 464 views
Given f(x)=−2x^3 -3x + 1, the value of the derivative of the inverse function, f^−1(x) at x=−21 is (f^1)′(−21)= ?pleas
1. 1 answer
2. 607 views
If e^x = 243 and e^y = 32 then e^((3x + 4y)/5) =?The answer is 432, but I don't understand why.
1. 7 answers
2. 884 views
The height in feet above the ground of a ball thrown upwards from the top of a building is given by s=-16t^2 + 160t + 200, where
1. 2 answers
2. 2,300 views
If I need to make a mold with a square base with a volume of exactly 28 cubic centimeters how many possible molds could I make?
1. 3 answers
2. 1,361 views
find the freezing point of a solution containing 3 grams of a compound of molar mass 125 g/mol in 45 g of camphor
1. 1 answer
2. 476 views
Dissolving solid CaCl2 H2O in a large volume of water is endothermic to the extent of 14.6 kj/mol. Also given:
1. 1 answer
2. 1,400 views
Dissolving solid CaCl2 H2O in a large volume of water is endothermic to the extent of 14.6 kj/mol. Also given:
1. 0 answers
2. 699 views
What is the percent KCL by mass in a 3.00 molal solution?
1. 1 answer
2. 1,647 views
Skeletal muscles contract when their (A)__________ shorten, using the energy source ATP. A rise in the concentration of
1. 1 answer
2. 661 views
From the esophagus down, the 6-9 meter long digestive tube is made up of four layers: the inner (A)__________ of epithelial
1. 0 answers
2. 459 views
whiich of these fit togetherA. lipase B. nuclease C. pancreatic amylase D. pepsin bread crumb stuffing butter mashed potatoes
1. 0 answers
2. 568 views
The Golgi body receives proteins from the (A) __________, "packages" those proteins and "ships" them to other areas of the cell,
1. 1 answer
2. 1,204 views
The __________ (the cell’s outer border) controls the movement of materials into and out of the cell. It is called a lipid
1. 1 answer
2. 564 views
The Golgi body receives proteins from the (A) __________, "packages" those proteins and "ships" them to other areas of the cell,
1. 0 answers
2. 476 views
Sequences of chemical reactions, called metabolic pathways, can be sped up, or catalyzed, by (A) __________ , which are made
1. 1 answer
2. 641 views
Determine the equation of the inverse function if f(x) = 2x^2+3, and x≥0.The answer is supposed to be f^-1(x)=[√(2x-6)]/2.
1. 2 answers
2. 457 views
If f(x)= -4x^2+7 and x≤0, what is the equation of the inverse function?The answer is supposed to be f^-1(x)= -[√(7-x)]/2,
1. 0 answers
2. 464 views
There are eight shelves. How many soup cans a grocery clerk stack if the bottom shelf has 21 cans and each additional shelf has
1. 1 answer
2. 793 views
Eric has two rock samples. One has a mass of 600 grams and the other has a mass of 1 kg. He recorded the total mass as 7 kg.
1. 2 answers
2. 726 views
Can someone explain what this paragraph is talking about? I do not understand it."But Western universalism, again, has two
1. 3 answers
2. 706 views
A 400 g marble block has a specific heat of 860 J/kg C deg. If the block is placed in 700 ml of water, the marble changes it
1. 0 answers
2. 468 views
A wave travels at 575 m/sec in a dense media. The wave is observed to The length of the media is 95.8 cm. When the wave is
1. 0 answers
2. 558 views
The speed of sound in air varies with the temperature and humidity of the air. In dry air at 20 degrees Celsius, the speed of
1. 0 answers
2. 975 views
1200kg car moving at 9.72m/s runs into and sticks to a parked 1000kg car. The collision takes 0.15s and after the crash the cars
1. 1 answer
2. 730 views
A holding pen for fish is to be made in the form of a rectangular solid with a square base and open top. The base will be slate
1. 2 answers
2. 1,192 views
How far from Earth will Venus be today?
1. 0 answers
2. 330 views
What five object were found in the sky on February 5, 2014 at 9 pm.
1. 1 answer
2. 478 views
a.According to the Starry Night program, which constellation the Sun was actually in at the instant of a person birth on August
1. 0 answers
2. 487 views
A hydrogen atom in an excited state emits a Balmer beta photon followed by a Lyman alpha photon. The electron decay from: the
1. 0 answers
2. 834 views
What is the peak wavelength and observed color of a 50,000 K star?
1. 3 answers
2. 1,885 views
Seventeen people has been exposed to a particular disease. Each one independently has a 40% chance of contracting the disease. A
1. 2 answers
2. 5,916 views
Height of children in kindergarten described by normal mode with mean 39.2 inches and standard deviation of 1.9 inches.What
1. 1 answer
2. 1,084 views
Find dy/dx if y= x^6[(x^2-9)^8]?So the answer is supposed to be 2x^5[(x^2-9)^7](11x^2-27), but I don't understand how to get it.
1. 2 answers
2. 645 views
An athletes long jump rounded to the nearest metre was 8 m. Whar are the longest and shortest lengths the jump could have been
1. 2 answers
2. 919 views
An athletes long jump rounded to the nearest metre was 8 m. What are the longest and shortest lengths the jump could have been
1. 3 answers
2. 1,141 views
y= ((2-3x^(1/x))/(2+3x^(1/x))Is the horizontal asymptote y= 1 or y= -1?
1. 1 answer
2. 301 views
Is it possible to factor x^3 - 9x^2 + 24x - 20 and solve for x by hand?I tried using the grouping method and got x^2(x-9) +
1. 3 answers
2. 1,062 views
I need help I'm about to take my Comprehensive Final Exam on Foundations of Music A STEP BY STEP APPROACH TO MUSIC THEORY. I'm
1. 2 answers
2. 586 views
Cassandra is two thirds as old as Jeremy. Three years ago she was half as old as Jeremy. How old are Cassandra and Jeremy?I got
1. 2 answers
2. 498 views
Solve the equation 2x + 5y - 3z = -1. Write the general solution as a matrix equation.I did some guessing and ended up getting
1. 0 answers
2. 927 views
Solve the equation 2x + 5y - 3z = -1. Write the general solution as a matrix equation.[x] [ ] [1] [y]= [ ] X [s] [z] [ ] [t] I'm
1. 4 answers
2. 699 views
Consider the chemical reaction aC2H6 + bCO2 + cH2O → dC2H5OH, where a, b, c, and d are unknown positive integers.?The reaction
1. 3 answers
2. 4,024 views
A piece of equipment has cost function C(x)=50x^2 + 1000 and its revenuefunction is R(x)= 500x - x^2, where x is in thousands of
1. 2 answers
2. 977 views
The graph of f(x)= (x^2 - 11x + 18)/(x-9) consists of a line and a hole. Find the equation of the line and the coordinates of
1. 2 answers
2. 829 views
What is the equation of the line passing through (4, 2) and perpendicular to the line passing through the points (9,7) and
1. 2 answers
2. 531 views
Find the slope of the tangent line to the curve 2(x^2+y^2)^2=25(x^2−y^2) at the point (−3,−1)?Here's what I did: 2(x^4 +
1. 2 answers
2. 614 views
Find the slope of the tangent line to the curve √(1x+2y) + √(1xy) = 8.24 at the point (2,8)?I know you have to use implicit
1. 4 answers
2. 549 views
A manufacture has been selling 1050 television sets a week at 360 dollars each. A market survey indicates that for each 20
1. 1 answer
2. 758 views
When you do implicit differentiation, how does D = √(x^2 + 8x + 12) turn into dD/dt = [(x + 4)(dx/dt)]/√(x^2 + 8x + 12)?plea
1. 5 answers
2. 441 views
laf is standing on a sheet of ice that covers the football stadium parking lot in Buffalo, New York; there is negligible
1. 1 answer
2. 806 views
In the construction of bridges and skyscrapers, gaps must be left between adjoining steel beams to allow for the expansion and
1. 1 answer
2. 675 views
a wagon that has a mass of 8kg? If the net force on a wagon is 4N, what is the wagon’s acceleration?
1. 2 answers
2. 865 views
How is -16/(4x+6)^5 and -1/(2(2x+3)^5) equivalent?I think -1/2(2x+3)^5 is the more simplified version of the two, but I just
1. 2 answers
2. 415 views
Let f(x) = [(√x)-7]/[(√x)+7]. What is f'(x)?What is the easiest way to find the derivative of this? Should I remove all the
1. 2 answers
2. 922 views
Can the extravagance and costs, both of money and lives, be justified in the opulent architecture commissioned by "divinely
1. 2 answers
2. 868 views
Determine the derivative at the point (2,−43) on the curve given by f(x)=7−7x−9x^2.I know that the answer is -43, but I
1. 3 answers
2. 475 views
Let f(x) be the function 1/(x+9). Then the quotient [f(5+h)−f(5)]/h can be simplified to −1/(ah+b). What does a and b equal
1. 4 answers
2. 3,299 views
The Hotel Ventor has 400 rooms. Currently the hotel is filled. The daily rental is $ 600 per room. For every $6 increase in rent
1. 2 answers
2. 818 views
It has been found that the supply of golf clubs varies linearly with its price. When the price per item was$ 76.00 ,32 items are
1. 1 answer
2. 508 views
You are given a pair of equations, one representing a supply curve and the other representing a demand curve, where p is the
1. 2 answers
2. 468 views
You are given a pair of equations, one representing a supply curve and the other representing a demand curve, where p is the
1. 2 answers
2. 561 views
For the functionf(x)=3x^3−42x Compute the difference quotient [f(x+h)−f(x)]/h,h≠0 I checked my work like 3 times and still
1. 1 answer
2. 469 views
The profit in dollars in producing x items of some commodity is given by the equation P=−11x2+346.5x−2612.5.How many items
1. 4 answers
2. 956 views
Find the unknown in the following equation. If there are more than one solution, then separate the solutions with a comma.(−8y
1. 2 answers
2. 406 views
The Hotel Bellville has 400 rooms. Currently the hotel is filled . The daily rental is $ 250 per room.For every $ 14 increase in
1. 2 answers
2. 645 views
A ball is thrown up at the edge of a 364 foot cliff. The ball is thrown up with an initial velocity of 72 feet per second.Its
1. 5 answers
2. 547 views

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