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Julie
Questions and answers by visitors named
Julie
, page 5
Questions (700)
How are a mix of pre-1982 and post-1982 pennies a misleading or incorrect analogy for actual element isotopes?
3 answers
619 views
Use implicit differentiation to write the slope-intercept equation of the tangent line to the graph of (x^2+4)y=8 at the point
1 answer
372 views
Use implicit differentiation to write the slope-intercept equation of the tangent line to the graph of (x^2+4)y=8 at the point
1 answer
412 views
Normally, higher interest rates in a country cause the ___ for that country's currency to increase as money flows to the higher
1 answer
411 views
Drum major tosses the baton into the air from height of 6feet and initial velocity of 45 ft/sec. What is max height? We are to
3 answers
445 views
got this from my teacher,
A monopolist faces a demand curve given by the following equation: P = $500 − 10Q, where Q equals
6 answers
1,413 views
equation best describes exponential decay
a. y=a.b(x) with o<b<1 b. y=a.b(x) with o<b_<1 c. y-a.b(2) with o<x_<1 d. y=a.b(x) with
2 answers
613 views
a function grows exponentially at a rate of 10%. If the value at t=2 is 908.56 what is the value of (a) in the formula:
2 answers
510 views
which inverse variation equation that relates to x and y
x y 3
1 answer
255 views
which inverse variation equation that relates to x and y
x y a. y+3x 3 1 b. y= 1/3 (3) 5 3/5 c. y=3/x 6 1/2 d. y=1/3x 8 3/8
1 answer
316 views
find the 15th term in the geometric sequenc below 20,10,5,2.5,....
a. - 25 b. - 5 4096 4096 c. 5 d. 25 4096 4096
3 answers
524 views
In order to stop a Ferris wheel, a force is applied that accelerates at a rate of -0.010rad/s^2. How long will it take the
1 answer
344 views
how do I find a 4th degree polynomial that has zeros; i,3i with f(-1)=60
I know the conjucants are -i and -3i (x-i)(x-3i)
3 answers
1,315 views
I am new to this graphing calculator. I input y=5^x and y=(5^x)-3 It is graphed with tables showing x=-3 y1=-374/125 and
1 answer
305 views
can someone tell me if I am correct
graph y1=(1/3)^x and y2= (1/3)^x+2 the relationships between the two graphs is they are
1 answer
315 views
Can someone tell me if I have this one correct.
log_1/2x 2+log_1/2x the relationship is a shift of 1 unit horizontally
4 answers
385 views
Cobb-Douglas Production function
Y=60K^1/3 L^2/3 If K=64 L=8 calculate MPL What is the equilibrium real wage in the economy
1 answer
1,052 views
1 -1 -1 1 2
0 1 -3 -7 0 3 0 -2 2 10 6 2 4 5 9 -3Row1 + Row3 -6Row1 + Row4 How do I work this using a calculator I get so confused
1 answer
299 views
Hey, just look up the grammar, tenses and wheter I use the right words, ok? It is for an oral excercise so the spelling isen't
4 answers
662 views
A ball is dropped from the top of a building that is 784 feet high. The height of the ball above ground level is given by the
4 answers
1,027 views
Suppose a car is traveling at +22.3 m/s, and the driver sees a traffic light turn red. After 0.351 s has elapsed (the reaction
2 answers
924 views
Suppose a car is traveling at +22.3 m/s, and the driver sees a traffic light turn red. After 0.351 s has elapsed (the reaction
2 answers
670 views
Suppose a car is traveling at +22.3 m/s, and the driver sees a traffic light turn red. After 0.351 s has elapsed (the reaction
2 answers
636 views
Determine if precipitation occurs and write the proper ionic equation
a) Na2O3+NiCL2 b) Pb(NO3)2+ALCL3
1 answer
417 views
A 50mL solution of NaOH is neutralized by adding 37.5 mL of 0.045 M HCL. What was the original concentration of the NaOH
4 answers
562 views
A .500g unknown sample is titrated with 40mL of .187M KMno4 by the following reaction:
5Fe{2+} + MnO4{-1} + 8H{+1} -> 5Fe{3+} +
4 answers
375 views
How many moles of carbon are needed to react with 525 g of hematite
2FeO3+6C->4Fe+3Co2 idk how to convert moles of fe2o3 to
4 answers
4,964 views
Magnesium metal burns in oxygen to form magnesium
oxide, MgO. (a) Write a balanced equation for the reaction Why is it
4 answers
2,312 views
how many mL of .135M Sr(OH)2 are needed to neutralize 35ml of .157M HCL
I know the answer came out to 20.4 ml My only question is
4 answers
417 views
Using D for tall plants and d for dwarf plants, a 1:1 ratio is obtained in which of the following crosses? These are my choices:
2 answers
1,196 views
Please, help me how to solve this problem
21% of 82 how do you use a fraction to estimate the percent of each number? Thank you
1 answer
176 views
in the problem 15 + 37=52, show how to make ONE addend the next tens number. Complete the new addition sentence __+__=__????
5 answers
817 views
A hypothetical example is:
A. A false example B. not real but can happen C. an example to prove a hypothesis d. has no place ina
2 answers
491 views
Simplify (factor if necessary) :
5 x^2 y^2 - 25 x^3 y^3 -------------------------------- x^2 y^2 Please help! Don't understand
1 answer
318 views
Scores on a certain exam are normally distributed with a mean of 78 and a variance of 25. What is the score obtained by the top
5 answers
3,757 views
Can someone check if these are right:
Tell reaction rate 1.) one antacid tablet is placed in a glass of cold water, while another
2 answers
638 views
Can someone check if these are right:
Tell reaction rate 1.) one antacid tablet is placed in a glass of cold water, while another
3 answers
830 views
Ammonium chloride and sodium nitrite react to form sodium chloride, water and nitrogen gas. If 6.33 moles of ammonium chloride
2 answers
963 views
Think about the war between the United States and Iraq. To what degree, if any, did political culture play a role in the
2 answers
574 views
a heater is plugged into 120v wall outlet. if the resistance in the heater is 15ohms what is the power used
2 answers
602 views
An object's weight is dependent upon its location in the universe. Why is this true?
A. This is true because weight is the
4 answers
1,233 views
Which of the following substances can act as a Bronsted acid in aqueous solution? (Select all that apply.)
NH41+ H2 O2 C4H10
2 answers
628 views
I need immediate help on these questions:.
2.a small plastic ball with a mass of 0.005kg is suspended from a thread and hangs in
1 answer
959 views
Modify the previous process to store the scores in an array. You will need to use either parallel arrays or a two-dimensional
1 answer
406 views
422g of ethyne and 190g of acetic acid find balanced equations and enthalpy calculations showing all steps
1 answer
303 views
If I have 5 yellow marbles and 7 blue marbles, what fraction are yellow?
1 answer
451 views
Traveling in France, Miguel exchanged 12 U.S. dollars for 82.8 francs. A few days later, he exchanged 25 U.S. dollars for francs
3 answers
472 views
At noon on a clear day, sunlight reaches the earth\'s surface at Madison, Wisconsin, with an average power of approximately 1.00
1 answer
922 views
How can you use an equation to make a prediction from a pattern.
I think that you can do based on the pattern giving you a base
3 answers
1,938 views
Is (1, -4) a solution for the equation y = -2x?
My answer is 1 = 2 (-4) 1 = -8 No it isn't
3 answers
365 views
Is 32 =8x - 8 an example of an open equation?
My answer is yes
1 answer
264 views
Complete each calculation. Express your answer to the correct number of significant digits.
a)4.02mL + 3.76mL +0.95mL b)(2.7 x
2 answers
519 views
what does that mean??
write the place and value of each number. 1)5,272,468,693 what is the selected digit in? ^ its eight
1 answer
339 views
Two phone companies offer discount rates to students.
The first company wants $9.95 per month plus $.10 per minute for long
4 answers
648 views
Two phone companies offer discount rates to students.
The first company wants $9.95 per month plus $.10 per minute for long
2 answers
518 views
A block is given an initial velocity of 9.00 m/s up a frictionless incline of angle θ = 21.0°. How far up the incline does the
1 answer
832 views
On a spacecraft, two engines are turned on for 525 s at a moment when the velocity of the craft has x and y components of v0x =
2 answers
518 views
A dolphin leaps out of the water at an angle of 24.9 ° above the horizontal. The horizontal component of the dolphin's velocity
2 answers
564 views
In regards to decisions affecting foreign policy, how did Jefferson’s actions as President validate or contradict his
2 answers
613 views
What are the steps to solve this problem? "The enthalpies of combustion of glucose and ethanol are -2813kj/mol and -1369kj/mol,
3 answers
1,051 views
At standard temperature and pressure, a 1.00-mol sample of argon gas is vented into a 22.4-L rigid box that already contains
3 answers
1,099 views
Calculate the rms speed of Br2 molecules at 23 °C and 1.00 atm. What is the rms speed of Br2 at 23 °C and 1.50 atm?
4 answers
1,646 views
Neutralization reaction
HCL(aq) + NaOH(aq) -> NaCl(s) + H2O(l) Use your results to determine the netball change of the
3 answers
948 views
2.241 g sample of nickel combines with oxygen to produce 2.852 g of metal oxide.
Calculate the number of grams of xygen in the
4 answers
1,813 views
Are my French sentences right? Can someone check? Merci.
1.) Il y a une fille qui s'appelle Fama . 2.) Elle est quinze ans . 3.)
7 answers
655 views
In triangle ABC, X and Y are the midpoints of BC and AC, respectively. The perpendicular bisectors of BC and AC intersect at a
2 answers
512 views
Answer True or False to each case. Coulomb's law states that the force between static charges Q1 and Q2
is proportional to Q1 Q2.
5 answers
2,516 views
Four identical point charges of q = 4.64 nC are at the four corners of a square with a side length of 13.5 cm as shown in the
4 answers
1,589 views
The electric potential at a position located a distance of 20.1 mm from a positive point charge of 6.50×10-9C and 12.1 mm from
2 answers
695 views
How much does it cost in dollars to watch the 5.00 hour-long coverage of the Super Bowl on a 115 Watt television set? Assume
2 answers
538 views
A weight of 340 N is suspended from a pole by means of a rod 4m long and a rope tied to one end 3m above. Find the tension on
1 answer
453 views
A uniform rod 1.2 m long has weight of 1000 dynes and 2000 dynes at its ends. At what point on the rod can it be balanced
1 answer
455 views
A borad, 3m long, is hinged at point a and is supported by a vertical rope at point b, 2m from a. A boy weighing 200 N stands at
1 answer
409 views
The ends of a rope are tied to two hooks on a ceiling. A set of books weighing 36.0 N is tied and hung on the rope so that the
2 answers
578 views
A 30-N non-uniform pole, 5m long, was used to carry a load of 400 N by two men. The load was hung at the middle of the pole.
1 answer
413 views
A bridge is 200 m long. A car weighing 2.5 metric tons is 50 m from one end of the bridge and a trucj weighing 6 metric tons is
2 answers
588 views
A buffered solution is made by adding 47.4 g C2H5NH3Cl to 1.00 L of a 0.68 M solution of C2H5NH2. Calculate the pH of the final
2 answers
1,078 views
How many moles of NaOH must be added to 1.0 L of 2.6 M HC3H5O3 to produce a solution buffered at each pH?
1)pH= 4.28 2)pH=pKa
3 answers
1,895 views
A positive charge of 4.90 μC is fixed in place. From a distance of 3.20 cm a from the fixed positive charge, a particle of mass
2 answers
784 views
Monochromatic light of wavelength, λ is traveling in air. The light then strikes a thin film having an index of refraction n1
1 answer
1,105 views
Suppose that at least 13.0 eV is needed to free an electron from a particular element, i.e., to ionize the atom. What is the
2 answers
778 views
The temperature of the cosmic background radiation is measured to be 2.7 K. What is the wavelength of the peak in the spectral
3 answers
775 views
An atom is ionized so that it has only one electron. When the electron drops from the n = 6 shell to the n = 1 shell, an X-ray
1 answer
440 views
Take element Z = 24 from the periodic table. Ionize it 23 times so that there is only one electron left orbiting around the
1 answer
434 views
A newly discovered particle, the SPARTYON, has a mass 895 times that of an electron. If a SPARTYON at rest absorbs an
1 answer
420 views
EXPONENTIAL EQUATION
Find the X 3^x - 82/9 = -3^-x
3 answers
368 views
A 60 kg soccer player kicks a stationary 0.4 kg ball giving it a speed of 14 m/s. The player's foot is in contact with the ball
3 answers
553 views
A 60-kg soccer player kicks a stationary 0.4 kg ball giving it a speed of 14 m/s. The player's foot is in contact with the ball
1 answer
436 views
If you deposit 10,000 every year into an account paying 5% interest compounded annually, how long will it take to accumulate
1 answer
423 views
Using two lawnmowers and working together Tom and Anne can mow the lawn in 36 minutes. It takes Anne 90 minutes if she mows the
4 answers
561 views
Distribution of exam 2 scores is unimodal and symmetric with a mean of 78 and a standard deviation of 4.6 points. What exam
1 answer
455 views
A country's Consumer Price Index (CPI) is a measure of the cost of living. The inflation rate is the annual relative rate of
1 answer
871 views
A round silo is 55 feet tall and has a 18 foot radius. How high would a load of 31000 cubic feet of grain fill the silo?
2 answers
1,096 views
6e^3t=9e^2t
1 answer
252 views
6e^3t=9e^2t
3 answers
286 views
If log base 2 of x and log base 2 of y are distinct positive integers and log base x of 2 plus log base y of 2 equal to 0.5.
4 answers
489 views
A number is chosen at random from among all 5-digit numbers containing only the digits 1,2,3,4, and/or 5. Find the probability
1 answer
462 views
Suppose that you deposit $1735.50 in a savings account that pays 9.25% annual interest with interest created to the account at
2 answers
629 views
Estimate the relative rate of change of
f(t)=5t^2 at t=4. Use change of 0.01.
2 answers
805 views
My professor gave our class a study guide for our midterm. On that study guide, there were 10 prompts he wanted us to know. Out
2 answers
533 views
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