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Lucy
Questions and answers by
Lucy
, page 4
Questions (625)
4 in the number 427,083
1 answer
423 views
If you dissolve 30.0 g of HF in 100mL of water, what is the concentration of H+ ions in this solution? (Can you figure out what
2 answers
945 views
if the integral ( [ )
([ f(t) ,t, 0, 8) = k Find [ (3x^2f(x^3), x, 0, 2)
3 answers
351 views
in the saying 'this means trouble', is trouble the adjective. I know that an adjective is a describing word but not sure if this
1 answer
366 views
how do you show contrast in a visual essay ?
1 answer
349 views
what tells you whether a solution is basic or acidic?
3 answers
411 views
what is a flat area where drainage is slow?
1 answer
330 views
The following graph shows how a 4-color web printing press depreciates from the year 2006 to the year 2010. It was purchased new
2 answers
520 views
there should be commas around "however" in the following sentence " Dewayne had planned to take the last flight out to chicargo
2 answers
997 views
What commercial arrangements did American shippers and traders want after the Revolutionary war had ended? Why did they feel
1 answer
400 views
A positive and a negative charge are positioned as shown:
+ | 3.00 meters - _______| 4.00 meters Q1 = 4.00 microCoulomb Q2 =
1 answer
421 views
A positive and a negative charge are positioned as shown:
+ | 3.00 meters - _______| 4.00 meters Q1 = 4.00 microCoulomb Q2 =
1 answer
511 views
A positive and a negative charge are positioned as shown:
+ | - _______| The distance from - to corner is 4.00m and the distance
1 answer
447 views
A positive and a negative charge are positioned as shown:
+ | |_______ - The distance from - to corner is 4.00m and the distance
1 answer
415 views
what does function mean in geography?
1 answer
652 views
combine like terms and solve equation:
m/4-6=2
1 answer
352 views
6y+y=42
combine and solve...show work...please help
3 answers
328 views
What are the pitfalls to avoid when trading with India?
2 answers
711 views
4x<-16
1 answer
265 views
What is "h" in 5h+15-3h=32
2 answers
195 views
what is "a" in 2(a-5)-5=3
1 answer
216 views
i NEED TO TURN (7X-3)^1/3 INTO AN ITERVATIVE FORMULA USING THE NEWTON RAPHSON FORMULA?
HOW DO I DO IT IN SIMPLE STEPS?
1 answer
316 views
You are piloting a small plane, and you want to reach an airport 450 km due south in 3.0 hours. A wind is blowing from the west
4 answers
2,908 views
Why might exploiting a comparative advantage increase real incomes?
I just need two reasons
1 answer
330 views
Ball 1, with a mass of 180 g and traveling at 18 m/s, collides head on with ball 2, which has a mass of 370 g and is initially
2 answers
525 views
Given that:
2Al(s)+(3/2)O2(g)--->Al2O3(s) change in H(rxn)= -1601 kJ/mol 2Fe(s)+(3/2)O2(g)--->Fe2O3(s) change in H(rxn)= -821
3 answers
1,144 views
S(rhombic)+O2(g)--->SO2(g)
change in H(rxn)= -296.06 kJ/mol S(monoclinic)+O2(g)--->SO2(g) change in H(rxn)= -296.36 kJ/mol 1.
2 answers
652 views
Given that:
2Al(s)+(3/2)O2(g)--->Al2O3(s) change in H(rxn)= -1601 kJ/mol 2Fe(s)+(3/2)O2(g)--->Fe2O3(s) change in H(rxn)= -821
3 answers
1,632 views
Given that:
2Al(s)+(3/2)O2(g)--->Al2O3(s) change in H(rxn)= -1601 kJ/mol 2Fe(s)+(3/2)O2(g)--->Fe2O3(s) change in H(rxn)= -821
4 answers
1,934 views
S(rhombic)+O2(g)--->SO2(g)
change in H(rxn)= -296.06 kJ/mol S(monoclinic)+O2(g)--->SO2(g) change in H(rxn)= -296.36 kJ/mol 1.
4 answers
1,433 views
when was Victorian Bouquet painted by Severin Roesen?
1 answer
321 views
HOw does the physical geography of Europe affect its political, social, and economic charateristics?
2 answers
1,040 views
Express Each percentage as a fraction in it's lowest term?
25%, 60%, 45%, 8.2%, 90%, 88.6%, 49.6%, 65%,8%, 98%, 94%, 76%, 20%,
2 answers
503 views
what is 2.47 rounded to the nearest tenth?
5 answers
1,567 views
Is <.0001 significant or insignificant?
1 answer
344 views
1) the sum of the digits of a two digit number is 9. The value of the number is 12 times the tens digit. Find the number.
2) the
3 answers
891 views
What are two reasons why the EU have limited exports to China and their effect on trade relationships?
1 answer
379 views
If a polonium-210 (Po-210) atom has just decayed, how close can the ejected
alpha particle get to a neighboring Po-210 nucleus?
1 answer
440 views
Particles are a major component of air pollution in many areas. It is of interest to study the sizes of contaminating particles.
1 answer
1,255 views
in a right triangle if the oppisite B = 2 times 5 squared, the adjacent A = 5 squared, then what is the hypotenuse C?????????
4 answers
338 views
what do you call twin boys?
1 answer
685 views
What is the Ph for the solution made from 11.10mL of 0.278M HCL solution mixed with 70.90mL of 0.1300M ammonia solution? The pKa
4 answers
1,121 views
What are the type of finance accounting sheets for proposals
2 answers
497 views
Find values of all six trig functions if sin(theta)= 4/5 and theta is in the second quadrant.
2 answers
719 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
3 answers
908 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
4 answers
1,361 views
|5x+3|>-2
please help me solve and when graphing it could you describe what it would look like? i know it would have open circle,
1 answer
431 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
9 answers
720 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
3 answers
519 views
Analysis of a compound shows carbon hydrogen and nitrogen present. Each molecule contains one nitrogen atom. A 150. Mg sample of
2 answers
907 views
Some solid calcium oxide in a test tube picks up water vapor from the surrounding to change completely into solid calcium
1 answer
693 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 answer
1,212 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
2 answers
762 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
3 answers
623 views
although the conversion of O2 to O^2- is rather endothermic, many elements react with oxygen in relatively mild conditions.
1 answer
292 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
2 answers
498 views
If a 5 gallon bucket was filled to the top with pig feed, how much would it weigh?
1 answer
461 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
4 answers
470 views
Give the products (if any) expected from the treatment of the following compounds with ozone followed by aqueous hydrogen
1 answer
962 views
f(x)=4-x^2-ln((1/2)x+1) find the tangent line approximation of f(-0.2)
1 answer
346 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 answer
510 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
2 answers
563 views
For the quadratic surface defined by 36x^2-72x-9y^2-36y-16z^2+96z-288=0
Put the surface into standard form and identify the
3 answers
495 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),
3 answers
454 views
Find and classify all local minima, local maxima, and saddle points of the function f(x,y)= -3yx^2-3xy^2+36xy
4 answers
821 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
3 answers
1,134 views
Find and classify all local minima, local maxima, and saddle points of the function f(x,y)= -3yx^2-3xy^2+36xy
I really need help
1 answer
537 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 =1
Pleasssse
1 answer
484 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 =1
so I
1 answer
484 views
Find and classify all local minima, local maxima, and saddle points of the function f(x,y)= -3yx^2-3xy^2+36xy
I really need help
1 answer
404 views
solve for t:
0=4sin(2t)cos(2t)-sin(2t)
4 answers
546 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),
5 answers
481 views
Find and classify all local min and maxima and saddle points of the function f(x,y)=/3yx^2-3xy^2+36xy
I know there are 3 saddle
3 answers
553 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)/2
I
4 answers
444 views
Unfortunately that is the entire problem..
Find and classify all local minima, local max, and saddle points of the function
2 answers
530 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
5 answers
354 views
Asteroids can be classified into two broad groups based on their composition and location: carbon-rich asteroids dominate the
2 answers
915 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
2 answers
1,031 views
If I spent 3/8 of her allowance and then another 3/8, how much does she have left?
1 answer
314 views
The number of pizzas consumed per month by university students is normally distributed with a mean of 9 and a standard deviation
3 answers
1,721 views
what percent is .624?
1 answer
240 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 answer
1,069 views
For the chemical reaction CH3Br + OH- CH3OH + Br-, which of the following would speed up the reaction?
increasing the CH3Br
3 answers
1,496 views
One more question:
Which of the following effectively increases the reactant concentration? Is it: heating the reactant mixture
3 answers
367 views
Divide
(42b^3 + 23b^2 + 38b + 49)/(6b + 5) This is tricky..help?
1 answer
247 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 answer
358 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
4 answers
1,247 views
Discuss the process known as the "Four Modernization's" and how the attitude of the Chinese leaders in this area contrasted with
1 answer
353 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
4 answers
5,856 views
what is dispossal of fllness?
1 answer
237 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
2 answers
1,074 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
3 answers
2,132 views
What belief does Whitman share with Ralph Waldo Emerson and other transcendentalists?
Which of the following most clearly
2 answers
1,410 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.
3 answers
795 views
What are the products of the double-replacement reaction between potassium chloride and silver acetate?
4 answers
1,701 views
What does this statement means?
He believed that political liberty threatened the efficiency of the stare with anarchy.
1 answer
592 views
Solid sodium reacts violently with water, producing heat, hydrogen gas, and sodium hydroxide. How many molecules of hydrogen gas
4 answers
1,646 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,
2 answers
610 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 answer
318 views
Evaluate \displaystyle \lim_{x \to 0} \frac{\sqrt{2}x}{\sqrt{2+x}-\sqrt{2}}.
1 answer
498 views
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