Ask a New Question

Questions and answers by

Lucy

Questions (642)

The small piston of a hydraulic lift has a diameter of 8 cm and its large piston has a diameter of 40cm. The lift raises a load
1. 3 answers
2. 2,023 views
The heat of combustion of bituminous coal is 2.5 x 10^4 J/g. What quantity of coal is required to produce the energy required to
1. 2 answers
2. 991 views
Are there any structural isomers of hydrocarbons from methane to decane have 3 stereogenic C atoms? (i know that there are none
1. 0 answers
2. 436 views
A roller coaster goes 40-m along a section of track sloping 10 degrees below the horizontal, followed by a 13-m section sloping
1. 0 answers
2. 582 views
A sherman is in a rowboat on a lake and 3km from shore. He wishes to reach a store 2 km down the (straight) shore. He can row at
1. 1 answer
2. 1,942 views
For f(x)= (x+3)^2/(4x-5) find all x such that f(x) increases.
1. 1 answer
2. 375 views
For any real number x there is a unique integer n such that n≤x<n+1, and the greatest integer function is defined as
1. 1 answer
2. 860 views
You have a tanker that is filled with olive oil, which total mass = 200 kg. The tanker is in the shape of a rectangular box
1. 1 answer
2. 710 views
Where does a clone receive is DNA from?My guess is two parents
1. 3 answers
2. 401 views
A tree is losing its trees. Two thirds fall off in the first week, two thirds of those remaining fall off in the second week,
1. 5 answers
2. 3,390 views
Find an equation of the tangent line to the curve f(x) = (sins)^2 + 2tanx at x= pi/4. I worked through it and got y = 5x + 5/2
1. 4 answers
2. 425 views
A projectile is accelerated from rest at point A along a circular track of radius 2 m, as shown in Fig. 5.1. Gravity acts in the
1. 0 answers
2. 447 views
inquiry lab determining the refractive index of a variety of materials (Snell's Law Lab):Basically this lab: We us a polar
1. 1 answer
2. 1,207 views
A spherical balloon is to be deflated so that its radius decreases at a constant rate of 12 cm/min. At what rate must air be
1. 0 answers
2. 799 views
How do I solve these problemsYou have 2000. g of aqueous NaOH solution. The percent by mass of the solute is 4.25%. How many
1. 1 answer
2. 598 views
Hello. I want make sure im doing right step.Prove the supremum of the set A={2-1/n: n in natural number} is 3. My answer Proof:
1. 1 answer
2. 610 views
i noticed it doesn't have x in them. i don't know what to do.prove: let epsilon>0. let f(x) = pi + 3 for x∈ real number. Prove
1. 0 answers
2. 462 views
definiton: A set S subsect of real number,sequence {Xn} is called bounded if there is a number M such that |X|≤ M for all x
1. 3 answers
2. 693 views
Find the quadratic polynomial whose graph goes through the points (-2,5), (0,5), and (1,11).f(x)= ______x^2+ ______x+ _______
1. 2 answers
2. 633 views
If y^3 = 16x^2Determine dx/dt When x= 4 and dy/dt= -1
1. 1 answer
2. 366 views
A particle is moving along the curve y= 4 sqrt{2 x + 2}. As the particle passes through the point (1, 8), its x-coordinate
1. 3 answers
2. 2,063 views
Imagine having an 80-turn coil with radius of 5.0 cm and resistance of 30 Ù. At what rate must a perpendicular magnetic field
1. 0 answers
2. 450 views
A uniform magnetic field makes an angle of 30 degrees with the axis of a circular loop of 300 turns and radius of 4 cm. The
1. 0 answers
2. 1,089 views
What is the concentration of hydronium ions in a solution that is 0.12 M HBrO(aq) and 0.160 M NaBrO(aq)?
1. 1 answer
2. 866 views
Jack has 2009 unit cubes glued together to form a cuboid. He opens a packet containing 2009 stickers. He has enough stickers to
1. 1 answer
2. 498 views
A 6.0 Ù resistor and a 3.0 Ù resistor are connected in parallel to a 1.5 V battery of negligible internal resistance. What is
1. 1 answer
2. 2,240 views
A potential difference of 2.0 V is applied across a wire of cross sectional area 2.5 mm2. The current which passes through the
1. 1 answer
2. 666 views
At a critical junction in a supercomputer, the current as a function of time is given asi(t) = 3t^2-2t, where i is measured in
1. 0 answers
2. 559 views
Is it "watch a one of a kind performance" or "watch one of a kind performance"I thought it was the first one, while someone else
1. 1 answer
2. 396 views
ABCD is a parallelogram. P is a point on AB such that AP:AB = 1:4. Q is a point on CD such that DQ:DC = 1:3. AQ and DP intersect
1. 0 answers
2. 511 views
A true/ false test is given. If a person guesses the answers, the probability that any particular question is correctly answered
1. 1 answer
2. 1,732 views
Thank You Ms. Sue.Have a Good Night
1. 1 answer
2. 434 views
Mary and Bob sold candy. Mary sold 4/5 as much candy as Bob did. If Mary sold 1/2 box how many boxes did Bob sell?I did 4/5
1. 1 answer
2. 486 views
The profit in dollars in producing x- items of some commodity is given by the equation P = - 40 x^2 + 1000 x - 5250 .How many
1. 1 answer
2. 582 views
Find the y-intercept of the two coordinates ( 2, -5) and ( 6, 3). Please help me with this question and please explain to me and
1. 3 answers
2. 477 views
| x | >= -8
1. 1 answer
2. 295 views
A sprinter can reach a speed of 9.0 m/s in 1.0 s. If the sprinter’s acceleration is constant during that time, what is the
1. 1 answer
2. 592 views
There is a woman that has a 40% chance of being in Casper recently, a 30% chance of being in Denver and a 27% chance that she
1. 1 answer
2. 327 views
thirty animals are to be used in a medical experiment on diet deficiency: 3 male and 7 female rhesus monkeys, 6 male and 8
1. 2 answers
2. 562 views
There is a woman that has a 40% chance of being in Casper recently, a 30% chance of being in Denver and a 27% chance that she
1. 1 answer
2. 355 views
How many numbersfrom 1 to 1000 inclusive can be expressed as the sum of k >= 2 consecutive positive integers for some value of k
1. 3 answers
2. 558 views
the number of moles that contains 5.13x1022 atoms of manganese
1. 1 answer
2. 295 views
If f(x)=(x+1)^3(x^2-1)^2, what is the value of f'(2)?Details and assumptions f'(x) denotes the derivative of f(x).
1. 1 answer
2. 312 views
Let y = x^3 + ax^2 + bx. If (x,y) = (2,64) is a point on the curve and the slope of the tangent at x=-1 is 3, what is the value
1. 1 answer
2. 330 views
Evaluate \displaystyle \lim_{x \to 0} \frac{\sqrt{2}x}{\sqrt{2+x}-\sqrt{2}}.
1. 0 answers
2. 542 views
The sequence \{x_n\}_{n=1}^{n=20} is defined as x_n = (-1)^n n. What is the sum of all the terms in the sequence?
1. 0 answers
2. 363 views
Hiro went to the store after school to pick up groceries. His list said he needed to pick up one jug of milk, one loaf of bread,
1. 1 answer
2. 676 views
Solid sodium reacts violently with water, producing heat, hydrogen gas, and sodium hydroxide. How many molecules of hydrogen gas
1. 2 answers
2. 1,722 views
What does this statement means?He believed that political liberty threatened the efficiency of the stare with anarchy.
1. 0 answers
2. 633 views
What are the products of the double-replacement reaction between potassium chloride and silver acetate?
1. 3 answers
2. 1,775 views
A 3.00-kHz tone is being produced by a speaker with a diameter of 0.185 m. The air temperature changes from 0 to 29° C.
1. 1 answer
2. 870 views
What belief does Whitman share with Ralph Waldo Emerson and other transcendentalists?Which of the following most clearly
1. 0 answers
2. 1,504 views
A steel aircraft carrier is 361 m long when moving through the icy North Atlantic at a temperature of 1.7° C. By how much does
1. 1 answer
2. 2,212 views
The density of ice is 917 kg/m3, and the density of sea water is 1025 kg/m3. A swimming polar bear climbs onto a piece of
1. 1 answer
2. 1,141 views
what is dispossal of fllness?
1. 1 answer
2. 267 views
The area of a rectangular wall of a barn is 24 square feet. Its length is 8 feet longer than twice its width. Find the length
1. 1 answer
2. 5,971 views
Discuss the process known as the "Four Modernization's" and how the attitude of the Chinese leaders in this area contrasted with
1. 0 answers
2. 394 views
on a day when the air temperature is 34 degrees celsius, a can of soft drink is taken from the fridge at a temperature of 4
1. 3 answers
2. 1,329 views
b=2, c+ sqrt of 13. Trying to find the length of the 3rd side.It is a right triangle with A on top, 2 on the right side and the
1. 1 answer
2. 406 views
Divide(42b^3 + 23b^2 + 38b + 49)/(6b + 5) This is tricky..help?
1. 1 answer
2. 289 views
One more question:Which of the following effectively increases the reactant concentration? Is it: heating the reactant mixture
1. 2 answers
2. 407 views
For the chemical reaction CH3Br + OH- CH3OH + Br-, which of the following would speed up the reaction?increasing the CH3Br
1. 1 answer
2. 1,601 views
Starting out with 50 mL of 0.20 M NaHCO3, calculate how many mL of 0.50 M NaOH solution to add to make 100 mL of approximately
1. 0 answers
2. 1,184 views
what percent is .624?
1. 1 answer
2. 264 views
The number of pizzas consumed per month by university students is normally distributed with a mean of 9 and a standard deviation
1. 1 answer
2. 1,774 views
If I spent 3/8 of her allowance and then another 3/8, how much does she have left?
1. 1 answer
2. 347 views
Find A, given that a = 18.2, B = 62, and C = 48. Round answers to the nearest whole degree. Do not use a decimal point or extra
1. 1 answer
2. 1,097 views
Asteroids can be classified into two broad groups based on their composition and location: carbon-rich asteroids dominate the
1. 1 answer
2. 1,000 views
Consider the function f(x,y)=xy+xz+yz+4 at the point P=(2,-1,1)Find the unit vector in direction of maximum increase of f in the
1. 4 answers
2. 405 views
Unfortunately that is the entire problem..Find and classify all local minima, local max, and saddle points of the function
1. 1 answer
2. 625 views
Use lagrange multipliers to find the max and min values of the func f(x,y)=xy subject to the constraint 1=(x^2)/8 + (y^2)/2I
1. 3 answers
2. 505 views
Find and classify all local min and maxima and saddle points of the function f(x,y)=/3yx^2-3xy^2+36xyI know there are 3 saddle
1. 2 answers
2. 636 views
using the chain rule find the min and max points and their values of the composite function defined by z=x^2+y^2, x=sin(2t),
1. 4 answers
2. 550 views
solve for t:0=4sin(2t)cos(2t)-sin(2t)
1. 3 answers
2. 593 views
Find and classify all local minima, local maxima, and saddle points of the function f(x,y)= -3yx^2-3xy^2+36xyI really need help
1. 0 answers
2. 487 views
Use Lagrange multipliers to find the max/min values of the function f(x,y)=xy subject to the constraint: x^2/8+y^2/2 =1so I
1. 1 answer
2. 561 views
Use Lagrange multipliers to find the max/min values of the function f(x,y)=xy subject to the constraint: x^2/8+y^2/2 =1Pleasssse
1. 1 answer
2. 556 views
Find and classify all local minima, local maxima, and saddle points of the function f(x,y)= -3yx^2-3xy^2+36xyI really need help
1. 0 answers
2. 601 views
Consider the function f(x,y)=xy+xz+yz+4 at point p=(2,-1,1)a)find the unit vector in direction of p. b) find the directional
1. 2 answers
2. 1,203 views
Find and classify all local minima, local maxima, and saddle points of the function f(x,y)= -3yx^2-3xy^2+36xy
1. 2 answers
2. 916 views
Using the chain rule, find the min and max points and their values of the composite function defined by:z= x^2 + y^2, x=sin(2t),
1. 2 answers
2. 521 views
For the quadratic surface defined by 36x^2-72x-9y^2-36y-16z^2+96z-288=0Put the surface into standard form and identify the
1. 2 answers
2. 540 views
I have answered all the other questions on this sheet but I am stuck on this one:Why is it fair to assume that the proportion of
1. 1 answer
2. 619 views
How far above the surface of the Earth does an object have to be in order for it to have a weight which is 0.53 times the same
1. 0 answers
2. 563 views
f(x)=4-x^2-ln((1/2)x+1) find the tangent line approximation of f(-0.2)
1. 0 answers
2. 367 views
Give the products (if any) expected from the treatment of the following compounds with ozone followed by aqueous hydrogen
1. 0 answers
2. 1,032 views
There is probably a really obvious answer to this but could you help please?In his lifetime a man produces many millions of spem
1. 3 answers
2. 505 views
If a 5 gallon bucket was filled to the top with pig feed, how much would it weigh?
1. 1 answer
2. 509 views
Set up an algebraic equation for this problem:When Brett and his younger sister add their ages together the sum in 17. Brett is
1. 1 answer
2. 560 views
although the conversion of O2 to O^2- is rather endothermic, many elements react with oxygen in relatively mild conditions.
1. 0 answers
2. 324 views
4) The table below shows the study times and test scores for a number of students.Study Time (minutes) (x) 9 16 21 26 33 Test
1. 2 answers
2. 702 views
4) The table below shows the study times and test scores for a number of students.Study Time (minutes) (x) 9 16 21 26 33 Test
1. 1 answer
2. 848 views
Three volatile compounds X,Y, and Z each contain elements Q. The precent by weight of element Q in each compound was determined.
1. 0 answers
2. 1,298 views
Some solid calcium oxide in a test tube picks up water vapor from the surrounding to change completely into solid calcium
1. 0 answers
2. 752 views
Analysis of a compound shows carbon hydrogen and nitrogen present. Each molecule contains one nitrogen atom. A 150. Mg sample of
1. 1 answer
2. 980 views
An object is moving along the graph of f (x)= x2 . When it reaches the point (2,4) the x coordinate of the object is decreasing
1. 2 answers
2. 593 views
Please check:1. If a river is represents your thoughts is that an analogy or conventional symbol. I think it is an "analogy" but
1. 8 answers
2. 803 views
|5x+3|>-2please help me solve and when graphing it could you describe what it would look like? i know it would have open circle,
1. 1 answer
2. 476 views
Mrs. Daniel pays $324 for a handbag and 3 pairs of shoes. The handbag costs half as much as the 3 pairs of shoes combined. Find
1. 2 answers
2. 1,431 views
My-law is a recent start-up trying to cater to customers in search of legal services who are intimidated by the idea of talking
1. 1 answer
2. 1,008 views

Pages

1
2
3
4
5
6
7

Ask a New Question

Archives
Contact Us
Newest
Privacy Policy
Terms of Use
© 2025