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Elena
Questions and answers by visitors named
Elena
Questions (212)
You and 4 friends go to a concert. In how many different ways can you sit in the assigned seats?
20 24 48 120 I think its A im
9 answers
3,888 views
Which describes the important role of the ozone layer
3 answers
187 views
What is the best way to add fractions and reduced them to the lowest terms example 3/8+1/3+5/6
7 answers
1,736 views
I am having a lot of trouble doing these types of problems. Can someone show me how to do this. Thank you for your time.
Evaluate
2 answers
1,027 views
Grade 7 question:
I am a two-digit prime number I am one less than a multiple of 10 If you add 30 to me you get another prime
5 answers
986 views
What is the balanced equation for ethane?
2 answers
529 views
Mike is a sole shareholder of Cuteness Dog, Inc. (CDI). He is operating his company as a sub chapter S corporation. It is a
1 answer
504 views
It is a problem about the job-order costing used by a law firm.
1 answer
367 views
3 elements that have the same properties most like Helium
1 answer
667 views
describe how statistics can be important and influential in the nursing profession. Provide at least two examples where you have
3 answers
447 views
You're given a ramp 0.5m in height with a 3m incline. A mass of 1kg is at the top of the ramp and there is a friction of 2N.
If
1 answer
378 views
find the derivative:
d/dx int_a to x (a being the upper limit) of tan(tan(t))dt
1 answer
422 views
Find the following interval:
(2e^(2sqrt(y))/sqrt(y))
1 answer
369 views
The distance required for an emergency stop for a car varies directly as the square of the car’s speed. A car traveling at 50
4 answers
1,401 views
The illumination provided by a car’s headlight varies inversely as the square of the distance from the headlight. If a
3 answers
614 views
Prove these identites
I really need help with these I don't understand how to do them !!!! sin^2+tan^2=sec^2-cos^2 sin^2 sec^2
4 answers
399 views
Prove these identites
I really need help with these I don't understand how to do them !!!! sin^2+tan^2=sec^2-cos^2 sin^2 sec^2
1 answer
375 views
Solve for x and y
X=1/6y Y=x-5
1 answer
334 views
You have 40.00 g of ice at -20.0C. You want ot convert all the ice to steam at 140.0 C. How much energy will it take to do so?
3 answers
393 views
Cloud seeding, which causes rain by introducing condensation into a cloud, has been used to bring precipitation to areas
2 answers
532 views
Earth's axis tilts at an angle of 23.5 degrees relative to its orbit. Analyze the climate conditions that would exist at the
1 answer
425 views
Why are space telescopes able to make better observations in the ultraviolet and infrared ranges than ground-based telescopes?
A)
2 answers
576 views
When was the telephone, atomic bomb, paper, flint tools, and the wheel invented? I've answered the other 4 and I think the
1 answer
467 views
Christine currently has $5000 in her 401(k) and plans to contribute $100 each month for the next 30 years into it. What will be
1 answer
483 views
We are working on Passive and Active voice. i really don't understand it, so do you know any websites that could help me with
2 answers
539 views
Christine currently has $5000 in her 401(k) and plans to contribute $100 each month for the next 30 years into it. What will be
1 answer
604 views
we are learning about the 14 tenses:
past,present,future,past perfect,present perfect, future perfect, past progressive..., past
3 answers
719 views
Perform the indicated operations. Reduce the answers to lowest terms....
1.) 7 3/5 + 2 4/7 = _______________ 2.) 8 5/9 + 15 5/6
3 answers
2,015 views
Describe the differences you observe between the art and architecture of the Early Renaissance (Chapter 8) and
that of the High
2 answers
844 views
0.25mol of CO are mixed with 0.90mol of H2 and heated to 950 degrees celcius in a 15L flask at equilibrium 0.190mol of H2O were
1 answer
306 views
Eutrophication refers to
1. the concentration of a toxic substance in the tissues of organisms. 2. depletion of mineral resources
2 answers
522 views
The effect of humans on the environment is
more drastic than that of other species because people have a greater ability to 1.
5 answers
843 views
A small metal ball with a mass of m = 82.5 g is attached to a string of length l = 1.72 m. It is held at an angle of θ = 58.5°
3 answers
742 views
An object is placed 11 cm in front of a concave mirror whose focal length is 23 cm. The object is 3.6 cm tall. Determine (a) the
1 answer
974 views
A company has identified the following investments as looking promising. Each requires an initial investment of $1.2 million.
1 answer
638 views
These are questions from Stephen King's collection "different seasons", particularly the novel "Rita Hayworth and the shawshank
1 answer
481 views
1. True or False?
A model train traveling at a constant speed around a circular track has a constant velocity. (False) 2.Which of
84 answers
16,951 views
1. True or False: If the net force of an object is 0 N, the forces are considered unbalanced. (True)
2. Which of the following
39 answers
21,412 views
1. True or False: If the net force of an object is 0 N, the forces are considered unbalanced. (True)
2. Which of the following
22 answers
5,200 views
1. r/5 = 9/21
r = 9 r = 2.14 r = 11.66 r = 37.8 2. A recipe calls for 3 cups of flour to make 3 dozen cookies. Use the proportion
4 answers
1,023 views
the process in which body cells are duplicated in order to grow and repair body tissues is called
4 answers
1,436 views
explain how to construct a perpendicular bisector
2 answers
940 views
find sin2x, cos2x, and tan2x if sinx= -2/sqrt 5 and x terminates in quadrant III
4 answers
5,131 views
Hector has $450 and saves 20 per week. Tim has $1200and spends $30 per week.write a system equation for this situation
6 answers
533 views
Hello guys.I got a homework and seem like I am stocked.
a)What type of experiments should be done to find the relationship
4 answers
426 views
Consider two types of nonlinear equations. What unique quality does each possess and how does that quality cause the graph's
4 answers
759 views
writers portray the personalities of characters
A. only through revealing the characters private thoughts. B. through plot
4 answers
686 views
In "A Man Called Horse," After his wife leaves him, Yellow Robe Behaves recklessly in battle because he
A. would rather die than
4 answers
707 views
Use activity coefficients to find the concentration of hydrogen ions in a solution of 90.0 mM butanoic acid and 0.05 M NaCl. The
1 answer
954 views
I have an essay that says.. "It has been said that Eastern Europe is a political region more than a physical region. Would you
4 answers
550 views
TRUE OR FALSE
The burning of fossil fuels cause the earth to get warmer by putting carbon dioxide in the atmosphere and the
3 answers
730 views
Smog is the worst in..
A. Chicago B. New York C. Los Angles MY GUESS: C. LOS ANGLES
3 answers
545 views
The burning of fossil fuels cause the earth to get warmer by putting carbon dioxide in the atmosphere and the carbon dioxide
2 answers
542 views
air pollution in pennsylvania causes ______ in new england because the wind blows the pollution into new England.
can someone
1 answer
422 views
During the summer _________ in India, wet air from the Indian ocean brings heavy rain to India.
2 answers
511 views
one reason the moon might be a better place than earth to study the universe is there is almost no atmosphere.
True or False MY
1 answer
406 views
the Julian calendar is the calendar we currently use. True or false. my guess is true
2 answers
520 views
if x-7=14 what is the value of x-2
Can someone help me with this. I know the answer, I just want to know how something like this
1 answer
352 views
If Jim is twice as old as Jerry plus six, Jerry is three years older than Tom, and Tom is 12, how old is Jim? I got = Jim is 36
2 answers
884 views
Does the Commutative Property apply to this situation? I ate dinner and read a book. I got = Yes.
2 answers
521 views
A 5.0 g n2o (laughing gas) that is inside a 12 mL cylinder used used to fill up a 800 mL whipped cream container. Beforehand,
2 answers
562 views
the charge on a pith ball was measured as +40 nC. if the charge on an electron is -1.6 x 10^-19, how many electrons have been
1 answer
383 views
Which relationship would most likely have a positive correlation?
The amount of memory in computer, and the number of keys on the
3 answers
758 views
Is y=3x^2-2 a function?
my guess is NO
7 answers
391 views
the associative property allows you to change the order of terms in an expression. true or false
my guess is True
2 answers
1,124 views
classify the following number as rational or irrational: 4.1
My guess is Rational
2 answers
710 views
An equation is not a function if even one x value produces ____ corresponding y value(s).
one less than one more than one zero
2 answers
524 views
Does a machine that takes one quarter at a time into its input and produces one gumball in its output act like a function?
my
3 answers
791 views
are the following a function
1. y=x/2 my guess is yes 2. y=2x+1 my guess is yes 3.y=x^2 my guess is yes 4.y=mx+b im not sure
1 answer
352 views
Suppose we would like to estimate the mean amount of money spent on books by students in the fall semester. We have the
3 answers
1,422 views
A criminologist is studying school violence, she selects a random sample of 25 adolescents aged 12 to 15 from a local middle
2 answers
516 views
How were each of the following cations utimately separated from the rest of the group and /or decorated? The use of equations
1 answer
314 views
How were each of the following cations utimately separated from the rest of the group and /or decorated? The use of equations
1 answer
337 views
If vector a= (10,10) and vector b= (4,5)
then ||a+b|| ≠ ||a|| + ||b||. Explain. I don't understand what this question is
1 answer
405 views
1. What is the heat required in kilocalories to convert 2 kg of ice at 0°C completely into steam at 100°C? (I thought it was
3 answers
2,495 views
Which sentence has correct subject - verb agreement
a) casey or robbie are coming to the movies with us b) swimming and skiing is
4 answers
1,123 views
Under a spreading chestnut tree
which syllables are unstressed?
7 answers
938 views
Which statement best demonstrates why the following is a non-example of a polynomial?
33/16 - 62y^2xz-35z^1/3y^2 a. The
3 answers
1,628 views
Which statement best demonstrates why the following is a non-example of a polynomial?
33/16 - 62y^2xz-35z^1/3y^2 a. The
4 answers
1,734 views
What mass of sodium has the same number of atoms as 50.0 g of calcium?
2 answers
516 views
Match the question with the correct conversion factor needed.
Column A 1.What is the mass, in grams, of a single atom of carbon?:
2 answers
615 views
What was a symbol representing gold, silver, and the government's promise to pay?
paper currency a tariff a trust a railroad
3 answers
390 views
Which event resulted from the company cut the workers' wage five times, but not cutting their expenses, leading to terrible
3 answers
389 views
Are these statements true or false?
The Republican were voted into power and presided over the government at the beginning of the
3 answers
455 views
Is this statement true or false?
The federal government was responsible for keeping the monetary supply sound, protecting
7 answers
644 views
Farming in the United States change in the late 1800s in all of the following ways EXCEPT:
World competition decreased. Farmers
3 answers
579 views
At what pH should precipitate Ni(OH)2 from 1 solution containing ions Ni2+ with concentration
0.2 M? KPT Mg(OH)2=5×10-¹⁶
1 answer
232 views
A solution prepared by dissolving 10 grams of HF in 500 grams of water, freezes at a temperature of -1.98 ° C. Calculate the pH
1 answer
475 views
Represents all structures for alkenes and cycloalkenes with formula C6H10. Indicate which of the structures represent geometric
1 answer
348 views
The number 11,p,q,21¹/2.....form an A.P. Find p and q
5 answers
1,790 views
Keiko is riding a skateboard 2 m/s, west. How long will it take her to reach a velocity of 8 m/s, west if her acceleration is 2
3 answers
321 views
Town X and Town Y were 980 km apart. At 8 a.m, Kay traveled from town X to Town Y while Jolin traveled from town Y to Town X.
2 answers
1,183 views
(Cr2O7)2- + 2Al + 14H+ <—> 2Cr3+ + 2Al3++ 7H2O
1) how many ml of solution 1.50 M e (Cr2O7)2- are needed to act without residue
4 answers
279 views
What is the volume of a square pyramid that is built in a cube with edges of 12 in
3 answers
76 views
What is the volume of a square pyramid with base edges of 4 ft and a hight of 15
1 answer
78 views
What's the volume of a cone with a radius of 6 m and height of 20 m
4 answers
98 views
What's the volume of a pyramid with the base area of 24.3 cm and a height of 14 cm
4 answers
80 views
What is the volume of a prison with base area of 24.3 cm and a height of 14 cm
2 answers
62 views
Is the volume of a cone with a base radius of 4 in and height of 3 in
3 answers
74 views
What is the volume of a cone with the base radius of 3 and a height of 4 in
3 answers
54 views
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