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Amy

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How much time passes on a train moving at 0.60c when 10 minutes pass outside the train?
1. 1 answer
2. 345 views
You are approaching a star in a spaceship that is travelling at half the speed of light. how fast will the light from the star
1. 1 answer
2. 479 views
True or False:1.) European countries declared war on the Ottoman Empire. 2.) The Ottoman Empire was partitioned into many
1. 1 answer
2. 834 views
Which statement correctly compares radio waves and microwaves?Radio waves have shorter wavelengths and higher frequencies than
1. 1 answer
2. 1,654 views
Iron (III) ions form a complex with thiocyanate according to the equationFe^3+(aq) + 6 SCN-(aq) ⇄ Fe(SCN)6 ^3-(aq) Kf =
1. 1 answer
2. 846 views
In which aqueous system is PbI2 least soluble and why?[A] 0.5 M HI [B] 0.2 M HI [C] 0.8 M KI I understand that I- is the common
1. 2 answers
2. 2,022 views
Calculate the silver ion concentration, [Ag+] for the reaction [Ag(CN2)]- --> Ag+ + 2CN-. The formation constant is 1x10^21. The
1. 1 answer
2. 569 views
The Keq for the equilibrium below is 0.113 at 973KSO2 (g) + 1/2 O2 (g) <-> SO3 (g) At this temperature, what is the value of Keq
1. 1 answer
2. 448 views
What mass of NH4Cl must be added to 0.750 L of a 0.100 M solution of NH3 to give a buffer solution with a pH of 9.26? Kb(NH3) =
1. 2 answers
2. 1,586 views
The school canteen makes 72 sandwiches and sells 5/6 of them how many are sold
1. 1 answer
2. 399 views
Write a ratio in three ways, comparing the first quantity to the second.About one in every four people swims at least six times
1. 1 answer
2. 279 views
In rectangle ABCD, AC equals 5x -10. BD equals 3x +16. Find the value of x.
1. 1 answer
2. 208 views
Find the increase in the boiling temperature of water in a solution obtained by dissolving 240 g of glucose (180.1 g/mol) in 2.5
1. 0 answers
2. 347 views
Find the mass percentage of MgCl2(aq) in a 1.58 L water solution containing 1.14 mol of MgCl2(aq). The density of the solution
1. 1 answer
2. 499 views
80.0 mL of distilled water is added to a 40.0 mL 0.170 M solution of ethanol. What is the molarity of ethanol in the resulting
1. 1 answer
2. 383 views
A water molecule has a mass of 2.99 x 10^ -23 g. What is the number of molecules of water in 18.01 g of water?
1. 1 answer
2. 547 views
A single water molecule has a given mass of about 2.992 x 10^-23 g = 18.02 amu. Estimate the number of molecules of water in a
1. 2 answers
2. 510 views
Hello, can someone help me to correct the grammars for my essay and make it sound more clear? I'm an international student and I
1. 1 answer
2. 278 views
write a function rule for the table.y= x 2, 5, 8,11, 14 y 3, 0, -3, -6, -9
1. 2 answers
2. 280 views
Find the wavelength in nanometers of a photon emitted by a hydrogen atom decaying from the 3s state to the 2s state.
1. 2 answers
2. 369 views
During a certain period of time, an electrical motor receives 9x10^5 kJ of electrical energy (a form of work) and produces
1. 1 answer
2. 418 views
1. Copper is wrapped with rubber when used in electric wiring. What describes rubber as a material?A. Electromagnet B.
1. 4 answers
2. 2,842 views
Suppose angle A is in quadrant I, and sinA = 2/5. Find the exact value of sin(360 deg - A).
1. 1 answer
2. 291 views
A party balloon filled with helium deflates to 2/3 of its original volume in 8.0 hours. How long will it take an identical
1. 4 answers
2. 3,493 views
The number of moles of HCl required to precipitate 1 mole of PbCl2 is: __?__ mol HCl.
1. 1 answer
2. 569 views
List all counting numbers wich leve a remainder of 4 when divided into 22
1. 1 answer
2. 331 views
The fencing along the rectangle's width costs £8 per meter. Also, the fencing along the rectangle's length costs £10 per
1. 1 answer
2. 319 views
What's the difference between chemical properties and chemical transformation?
1. 1 answer
2. 223 views
In a certain experiment, 1.000 mole of N2 (g) and 1.000 mole of H2 were allowed to react at 500°C in a 1.000-liter flask. The
1. 2 answers
2. 933 views
The total energy of the pendulum system is350 JA) calculate that mass of the pendulum with a max speed of 5 m/ s B) calculate
1. 1 answer
2. 441 views
You invest$10 and after a period of 3 month your new balance is $60.by what factor did money increaseIncreased by a factor of 4
1. 1 answer
2. 497 views
Why does scrooge dislike Christmas so much?
1. 2 answers
2. 523 views
For a confidence level of 80% with a sample size of 26, find the critical T value.Please help
1. 0 answers
2. 1,221 views
Assuming the population has an approximate normal distribution, if a sample size n = 17 has a sample mean x = 47 with a sample
1. 1 answer
2. 854 views
The graph illustrates a normal distribution for the prices paid for a particular model of HD television. The price paid is 1600
1. 3 answers
2. 1,510 views
In the country of United States of Heightlandia, the height measurements of ten-year-old children are approximately normally
1. 1 answer
2. 742 views
Write the following in scientific notation in their respective SI units ( 3 dig fig)a) 286.6 km b) 0.864um c) 760mg d) 62.1 ps
1. 12 answers
2. 886 views
An object travels the path given by the parametric equations x=ln2t + t^3 and y=(e^t) - 2 sint. At t=2.1 sec, what is the
1. 2 answers
2. 963 views
Consider the differential equation dy/dx = x + 2y, with initial condition y(0) = 2. Use Euler's method with four steps to
1. 2 answers
2. 2,837 views
A line segment starts at P(4,7) and ends at Q(2,-3). Find the parametric equations of the line segment.
1. 1 answer
2. 1,455 views
What is the volume, in cubic in, of a rectangular prism with a height of 17in, a width of 17in, and a length of 4in?
1. 2 answers
2. 1,491 views
A line segment starts at P(4,-7) and ends at Q(2,3). Find the parametric equations of the line segment.
1. 1 answer
2. 748 views
Find the slope-intercept form of the line given that x=-2+3t y=4-6t.
1. 2 answers
2. 473 views
Find two sets of parametric equations for the line with slope 3 that passes through (2,1).
1. 1 answer
2. 759 views
Eliminate the parameter to find a description of the following circles or circular arc in terms of x and y. Give the center and
1. 2 answers
2. 730 views
Part 1: If 25.0g of C3H8 is combusted in a bomb calorimeter containing 3.5 L of water, calculate the heat generated if the
1. 1 answer
2. 323 views
The equation y= 2 - 3sin (pi/ 4) (x-1) has a fundemental period of?
1. 1 answer
2. 617 views
For all points on the curve x^2 - siny=y+4 where y=pi/2, is the curve concave up or concave down? Why?
1. 1 answer
2. 759 views
Find the equation for each tangent line to the curve x^2 - sin y = y+4 where y=0.
1. 1 answer
2. 323 views
Use power series division to find the Maclaurin series for f(x) = 1/ ( 1+(x^3) ).
1. 1 answer
2. 451 views
Consider the differential equation dy/dx = -1 + (y^2/ x).Let y = g(x) be the particular solution to the differential equation
1. 1 answer
2. 10,664 views
Why is the battle of midway considered a turning point in word war 2
1. 1 answer
2. 707 views
Let f be the function with f(0) = 1/ (pi)^2, f(2) = 1/(pi)^2, and the derivative given by f'(x) = (x+1)cos ((pi)(x)). How many
1. 6 answers
2. 9,865 views
A tall stool weighs 3.6kg. A table is twice as heavy as a chair. Together, 5 chairs and 2 tall stools weigh 15.3kg more than the
1. 6 answers
2. 1,012 views
Ethic CaseThe Controller for Anderson Electric, Ron Foss, is reviewing the year-end adjusting entries prepared by the accounting
1. 0 answers
2. 466 views
Table: Time (weeks) 0 2 6 10Level 210 200 190 180 The table above gives the level of a person’s cholesterol at different times
1. 1 answer
2. 5,467 views
A particle moves in the xy-plane so that its position for t ≥ 0 is given by the parametric equations x = ln (t + 1) and y =
1. 1 answer
2. 9,126 views
lim ( (3x+1) / x) - (1/ sin x ) =x->0^(+)
1. 1 answer
2. 635 views
According to Masterfoods, the company that manufactures M&M’s,12% of peanut M&M’s are brown, 15% are yellow, 12% are red,
1. 0 answers
2. 813 views
Let f(x) = (3+2x-x^2)^2 be defined for the interval [-2,3]. If M is the y-coordinate of the absolute maximum and m is the
1. 1 answer
2. 1,135 views
An actress has a probability of getting offered a job after a try-out of 0.11. She plans to keep trying out for new jobs until
1. 0 answers
2. 1,710 views
What is lim h->0 ((8 (1/2+h)^8) - 8 (1/2)^8)/h ?
1. 4 answers
2. 4,312 views
Use Theorem 9.4.3 to find the sum of the series.∞ Σ ( (1/ 5^k) - (1/ (k (k+1) ) ) k=1 Theorem 9.4.3 (slide 24/ 72):
1. 2 answers
2. 1,066 views
Express the repeating decimal as a fraction (by using infinite series):0.451141414 . . .
1. 2 answers
2. 787 views
Determine whether the statement is true or false. Explain your answer.1. An infinite series converges if its sequence of partial
1. 1 answer
2. 1,168 views
Determine whether the sequence converges, and if so find its limit.{ln n/ n} +∞ n=1 I know it converges to 1, but how?
1. 0 answers
2. 553 views
Find the equation of y if dy/dx = 4x (x^2 + 8)^(1/3) and y(0)=0.
1. 3 answers
2. 458 views
Find the equation of each tangent line to the curve y=(1/x) that has a slope of -1. Find each point of tangency.
1. 1 answer
2. 864 views
Let f(x) = (2)sqrt(x). If f(c)=f'(c) find the value of c
1. 1 answer
2. 533 views
Find the value of "a" such that the functionx^2 x<3 f(x) = 2ax x ≥3 will be continuous at 3
1. 1 answer
2. 420 views
Which changes will cause demand for a product to rise in a free market economy?Choose all answers that are correct. A. an
1. 4 answers
2. 1,502 views
Let f be the function defined as:f(x) = (x^2 - 4)/ (x-2) if x≠2 1 if x=2 Which of the following statement(s) about f is true?
1. 1 answer
2. 2,003 views
Find derivative of the function:y=ln(e^x/(e^x-1))
1. 1 answer
2. 446 views
Find derivative of the function:y = (4x+1)^2 (1-x)^3
1. 1 answer
2. 492 views
lim x → 0 (x^4) (sec^5(2x)) csc^4(3x)
1. 2 answers
2. 576 views
Trisha had 355 apples. Johnny took away 279. How many does she have left?
1. 1 answer
2. 341 views
So I have had these questions confusing me for some time and tried googling but came up with long , hard-to-understand equations
1. 2 answers
2. 461 views
The first term of an A.P is equal one-half of the common difference,d, find the 8th term of the A.P in the tern of 'd'
1. 8 answers
2. 4,412 views
There are 3 finalists. Two medals; gold &silver awarded.How many different ways can the medals be awarded?
1. 3 answers
2. 868 views
Why were members of the Third Estate frustrated with the French government?A. They opposed the wars that had been fought during
1. 41 answers
2. 10,814 views
x3 = −16.2 + 4.0x1 + 9.4x4 − 1.3x7Suppose that n = 14 data points were used to construct the given regression
1. 0 answers
2. 452 views
True or False: The frequency, amplitude and timber of a single auditory stream tend to change rapidly during a short period of
1. 1 answer
2. 507 views
Georgie had blood drawn because of his medical condition. feels nervous anytime she sees same nurse
1. 2 answers
2. 471 views
Georgie feels nauseated anytime she sees the Wendy's sign
1. 2 answers
2. 502 views
Afton made a chicken dish for dinner. She added a 10-ounce package of vegetables and a 14-ounce package of rice to 40 ounces of
1. 4 answers
2. 620 views
Calculate the Ksp of a saturated solution of Mg(OH)2 upon titration with 0.0100 HCl in the presence of phenolphthalein indicator
1. 1 answer
2. 720 views
"A student with two summer jobs earns $10 per hours at a cafe and $8 per hour at a market. The student would like to earn at
1. 2 answers
2. 2,119 views
How do the pressure variations with depth affect our ability to explore the ocean? In particular, what are some of the
1. 1 answer
2. 820 views
First of all, sorry to post a similar question to the one I asked before. I do not know if that is allowed, my apologies.Calcula
1. 1 answer
2. 483 views
Calculate the sum from k=1 to infinity (or n) of(k^4)- (k-1)^4 It says that the solution is n^4, but I do not know why, I tried
1. 2 answers
2. 593 views
Two successive discounts of 50% and 50% are followed by two successive increases of 20% and 20%. What single percentage change
1. 3 answers
2. 595 views
Jason and his four friends want to rent scooters. Scooters 'R Us rent scooters for a $50 fee plus $12 for each scooter. How much
1. 1 answer
2. 500 views
Seawater contains approximately 3.5%NaCl by mass and has a density of 1.02 g/mL.What volume of seawater contains 9.0 g of
1. 2 answers
2. 774 views
If the expression 4x^2/2x-1 is written in the equivalent form 1/2x-1+A, what is A in terms of x?A) 2x+1 B) 2x-1 C) 4x^2 D)
1. 5 answers
2. 2,577 views
A breathalyser test is used by police in an area to determine whether a driver has an excess of alcohol in their blood.The
1. 1 answer
2. 943 views
A rectangle is three times as long as it is wide. Squares of side 2 feet are cut from each corner. Then the sides are folded up
1. 2 answers
2. 886 views
Find the number of units that produces maximum revenue given byR = 900x-0.1x^2, where R is the total revenue in dollars and x is
1. 3 answers
2. 5,192 views
The graph of f(x)=1/x^2 is horizontally compressed by a factor of 14, then shifted to the right 9 units and up 3 units.
1. 1 answer
2. 1,516 views
In a butane lighter, 9.8 g of butane combines with 35.1 g of oxygen to form 29.6 g carbon dioxide and how many grams of water?
1. 0 answers
2. 635 views
A sample of aluminum with mass of 53.3 g is initially at 143 ∘CWhat is the temperature of the aluminum after it loses 2.76 x
1. 1 answer
2. 2,879 views

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