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Diana

Questions (751)

Find Each Sum Or Difference.(13x + 9y) - 11y
1. 1 answer
2. 511 views
What is the expected value of M when n=4 scores and if a 2 year old boys weighs 36 pounds, how much protein should he consume?
1. 1 answer
2. 407 views
write as a single fraction in its lowest terms:(x-2)/3 + (x+1)/4
1. 2 answers
2. 655 views
When doing a virtual lab everything is exact, but why would they still ask for absolute and relative errors?
1. 3 answers
2. 448 views
How might the label of deviance act as a self-fulfilling prophecy?I don't understand this question...what do they mean by
1. 3 answers
2. 931 views
would baby boomers be old old, middle old, or newly old?
1. 10 answers
2. 390 views
Can someone restate this question for me I don't get it at allWhat does the research on children reared in isolation indicate
1. 1 answer
2. 460 views
Two less than three-fourths of a number is ten. What is the number?
1. 2 answers
2. 5,225 views
1. I've posted this question before (once, the other post wasn't me)and I have still got no help.Peg spends $7.50 a week for
1. 1 answer
2. 627 views
i posted this question yesterday. i really want to know how to do it.John bought n objects, each costing n cents. The change he
1. 4 answers
2. 1,278 views
John bought n objects, each costing n cents. The change he received from his $10 bill was less than $1 and consisted of only two
1. 1 answer
2. 560 views
Alice, Beth, and Charlene start climbing a staircase, each with her left foot on step 1 and then her right foot on the next
1. 1 answer
2. 618 views
Peg spends $7.50 a week for grapefruit. When grapefruit are out of season, she gets 1 fewer grapefruit than when they are in
1. 1 answer
2. 586 views
How many terms are in the expansion of (a+b+c)^3 after like terms have been combined?1. I don't know what this question is
1. 6 answers
2. 581 views
The height of a golf ball that is hit into the air with an initial vertical velocity of 112 feet per second is given by the
1. 0 answers
2. 522 views
Can someone explain the sine rule please?
1. 1 answer
2. 356 views
How do I solve a problem like this:p^3m^2/7 + p^2m^3/21 - p^4m/14 Can you please help?
1. 1 answer
2. 938 views
Will someone help me with factoring?
1. 1 answer
2. 326 views
I have trouble writing pseudo codes, while and for loops.Please help.
1. 2 answers
2. 455 views
I have trouble with problem solving. Can you help me please?
1. 1 answer
2. 518 views
NaOH(aq)+H3PO4(aq)�¨Na3PO4(pq)+H2O(l)Please help.
1. 3 answers
2. 3,022 views
I don;t understand this question.NaOH(aq)+H3PO4(aq)�¨Na3PO4(pq)+H2O(l)
1. 1 answer
2. 543 views
I don't fully understand factorization in algebra. I've got a problem:9x-27x^3. Can you please help me?
1. 1 answer
2. 428 views
Find all real solutions to the following equation:(x^2 -7x +x)^(x^2 - 2x - 35)
1. 1 answer
2. 383 views
You are driving a car down a straight road at a constant 48 miles per hour.Consider the following forces: I) air drag pushing
1. 2 answers
2. 1,283 views
Can the president veto the choice of congress's salary?
1. 1 answer
2. 332 views
consider the following linear equataion: 4x+11y=2011How many solutions are there such that x and y are positive integer? (note
1. 2 answers
2. 476 views
A mass of 12.7 kg is hanging by a steel wire 1.02 m long and 1.12 mm in diameter. If the mass is pulled down slightly and
1. 1 answer
2. 548 views
A bowl contains 8 marbles:3 red, 2 blue, 1 white, and 2 green. If 3 marbles are randomly selected without replacement, what is
1. 1 answer
2. 672 views
describe the symmetries of a water molecule.
1. 1 answer
2. 378 views
let x and y be real numbers. find the area enclosed by the graph of the following equation: abs(2x)+abs(2y)=1
1. 1 answer
2. 406 views
Signs in a department store read, "75% off original prices when you take an extra extra 50% off already reduced prices." By what
1. 1 answer
2. 454 views
lisa checks the stats for her favorite puzzle game on her Ipod. she sees that she has won exactly 72% of the 2400 puzzles that
1. 1 answer
2. 497 views
Oleum or fuming sulfuric acid available commercially in concentrations ranging from 20 to 99.9% sulfur trioxide.What is the
1. 3 answers
2. 531 views
I have 5.0 ml of lead II NITRATE and mix it with 20.0 ml of Sodium Iodide. what is the formula of the precipitate
1. 1 answer
2. 437 views
A 20 ft ladder is leaning against the side of a house. If the bottom of the ladder is moving away from the house at the rate of
1. 1 answer
2. 580 views
Find all the two digit prime numbers neither of whose digits are prime.Someone helped me yesterday but I do not understand.
1. 2 answers
2. 1,286 views
Find the smallest possible sum of six consecutive integers such that none of the integers is prime.
1. 2 answers
2. 598 views
Find all the two digit prime numbers neither of whose digits are prime.
1. 4 answers
2. 777 views
Rank the automobiles based on the magnitude of the force needed to stop them, from largest to smallest.2000 kg car going 5m/s
1. 2 answers
2. 4,957 views
Rank these automobiles based on the magnitude of the impulse needed to stop them, from largest to smallest.2000 kg car going
1. 1 answer
2. 1,347 views
Penelope bought 17 large packs and 5 small packs of identical pens. When she got home, her little sister opened all of the
1. 1 answer
2. 1,016 views
circles P and Q are externally tangent at T. Horizontal lines l and m are, respectively, tangent to circles P and Q at R and S.
1. 0 answers
2. 536 views
f(2n)=n+f(2n-2) and f(2)=1.determine f(20)
1. 1 answer
2. 331 views
Use each of the integers 1-9 exactly once in any order to write a numerical expression equal to 2011. An integer may be written
1. 0 answers
2. 600 views
What is the probability that rolling four fair, six-sided dice produces an even sum?
1. 2 answers
2. 749 views
if i said, un animal grande que es la palabra en ingles para nariz, would you know what animal I was talking about.
1. 2 answers
2. 591 views
A car travels in a straight line for 5.4 h at aconstant speed of 79 km/h . What is its acceleration? Answer in units of m/s2.
1. 2 answers
2. 823 views
Two identical small spheres of mass 2.0g are fastened to the ends of an insulating thread of length 0.60m The spheres are
1. 1 answer
2. 2,648 views
three spheres, each with a negative charge of 4.0*10^-6 C, are fixed at the vertices of an equilateral triangle whose sides are
1. 0 answers
2. 1,021 views
A boat starts at point A, moves 3 km due north, then 2 km due east, then 1 km due south, and then 4 km due east to point B. Find
1. 2 answers
2. 702 views
A jar contains some red and some yellow jelly beans. If a child ate 1 red jelly bean, 1/7 of the remaining candies would be red.
1. 2 answers
2. 538 views
two sides of a triangle measure 8 and 15. how many integer values can be assigned to the third side so that all the angles in
1. 1 answer
2. 535 views
Show that number N! can terminate in exactly 1,2,3,4,or 6 zeros but never 5 zeros?
1. 4 answers
2. 721 views
A triangle with side lengths 26, 28, and 30 is constructed so that the longest and shortest sides are tangent to a circle. the
1. 5 answers
2. 606 views
A dartboard has the numbers 3, 6, 9, 12, 15, 19, 21, 25, 27, and 30 on it. What is the fewest number of darts that could be
1. 1 answer
2. 520 views
In a variant of the game Nim, two players alternate taking turns in removing 1, 2, or 3, beans from a pile. The object is to
1. 1 answer
2. 1,081 views
m (DOC) = 3/4m(BOA)
1. 1 answer
2. 379 views
a 10 kg gun recoils with a speed of 0.1 meter per second as it fires a 0.001kg bullet. what is the speed of the bullet as it
1. 2 answers
2. 1,343 views
Compounds can be classified as acids or bases according to _____ different theories.
1. 1 answer
2. 1,038 views
A .35M solution of a newly synthesized acid, HX, has [H+] of 4.1 x 10^-2. What is the value of Ka for this acid?
1. 1 answer
2. 1,111 views
If p = 2 and q = 8, the value of p^3 + 64 squared ÷ q is _____.All i can say is huh????
1. 1 answer
2. 418 views
The names and ages for each person in a family of five follow:Name Jane Kirk Jean Scott Age 40 36 8 6 2 a. What is the mean age?
1. 1 answer
2. 1,342 views
Suppose that a ball is drawn at random from the box (a), its color is recorded, and then the ball is put back in the box. Draw a
1. 1 answer
2. 929 views
Identify the word in bold type.This car was fixed by the woman WHOSE parents used to live in New York. demonstrative pronoun
1. 3 answers
2. 1,703 views
If the coefficient of static friction for tires on a road is 0.25, at what maximum speed can a car round a level 47.5 m radius
1. 2 answers
2. 3,033 views
A box contains three white balls and two red balls. A ball is drawn at random from the box and not replaced. Then a second ball
1. 1 answer
2. 1,898 views
If 10 is removed from the set of whole numbers, is the set closed with respect to addition? Explain why or why not.
1. 1 answer
2. 466 views
Using the butterfly method, which fraction is less 1/4 or 1/3 - I know the answer but using the butterfly method the answer does
1. 0 answers
2. 251 views
Some help with this questions would be great....thanks everyone. I would like to say the answer is #1.As president, John Quincy
1. 0 answers
2. 489 views
What are some additional methods that I could use during my lit course to write about the literature I will be reading?I need
1. 2 answers
2. 599 views
There are four tests in a year. The first test is worth 26%, the second is worth 20%, the third test is worth 30%, and the
1. 2 answers
2. 587 views
Which one is a rule for the nth term of an arithmetic sequence with a8 = 56 and d = 5?
1. 2 answers
2. 884 views
A current of 0.80 A was applied to an electrolytic cell containing molten CdCl2 for 2.5 hours. Calculate the mass (in grams) of
1. 4 answers
2. 5,585 views
Calculate the cell emf (in volts) for the following reaction at 25°C:Ni(s) + 2 Cu2+(0.010 M) → Ni2+(0.0010 M) + 2 Cu+(1.0 M)
1. 4 answers
2. 4,239 views
How many hours will it take to produce 78.0 g of Al metal by the reduction of Al3+ in an electrolytic cell with a current of
1. 1 answer
2. 2,546 views
Consider an electrochemical cell based on the following cell diagram:Pt | Pu3+(aq), Pu4+(aq) || Cl2(g), Cl−(aq) | Pt Given
1. 3 answers
2. 5,802 views
A particle travels horizontally between two parallel walls separated by 18.4 m. It moves toward the opposing wall at a constant
1. 0 answers
2. 448 views
An object with mass m1 = 6.00 kg, rests on a frictionless horizontal table and is connected to a cable that passes over a pulley
1. 2 answers
2. 1,519 views
Two blocks each of mass m = 4.10 kg are fastened to the top of an elevator as in the figure below.(a) If the elevator
1. 0 answers
2. 639 views
A 520 N cat burglar is supported by cables in the figure below. Assume the angle θ of the inclined cable is 32.0°.Find the
1. 1 answer
2. 1,865 views
A 2.90 kg block starts from rest at the top of a 30° incline and accelerates uniformly down the incline, moving 2.23 m in 1.90
1. 1 answer
2. 571 views
A box slides down a 36° ramp with an acceleration of 1.05 m/s2. Determine the coefficient of kinetic friction between the box
1. 0 answers
2. 570 views
A 2.90 kg block starts from rest at the top of a 30° incline and accelerates uniformly down the incline, moving 2.23 m in 1.90
1. 0 answers
2. 597 views
A block with a mass 4.0 kg is held in equilibrium on an incline of angle θ = 42° by a horizontal force F.a)Find the magnitude
1. 1 answer
2. 1,992 views
A box slides down a 36° ramp with an acceleration of 1.05 m/s2. Determine the coefficient of kinetic friction between the box
1. 3 answers
2. 1,072 views
A 10 kg box is pulled across the floor at a constant velocity of 3.0m/s. If the box is pulled with a force of 40 N, what's the
1. 1 answer
2. 632 views
A car starts from rest and travels along a circular track with a radius of 55.0 meters. The car starts out at a position due
1. 0 answers
2. 630 views
A 7000 kg helicopter accelerates upward at 0.70 m/s/s while lifting a 1000 kg car to a mountaintop for a TV commercial photo
1. 1 answer
2. 575 views
A car starts from rest and travels along a circular track with a radius of 55.0 meters. The car starts out at a position due
1. 1 answer
2. 992 views
A 10 kg box is pulled across the floor at a constant velocity of 3.0 m/s. If the box is pulled with a force of 40 N, what is the
1. 0 answers
2. 556 views
A 20.0 kg crate is pushed across a rough floor for a distance of 90.0 cm. When the force pushing the block is equal to 80.0 N
1. 3 answers
2. 651 views
A 20.0 kg crate is pushed across a rough floor for a distance of 90.0 cm. When the force pushing the block is equal to 80.0 N
1. 1 answer
2. 572 views
Calculate the amount of water (in grams) that must be added to (a)5.00 g of urea (NH2)2CO in the preparation of a 16.2 percent
1. 1 answer
2. 1,959 views
Explain why ethanol is not soluble in cyclohexane. Also, how do you figure out whether something is polar or nonpolar?
1. 3 answers
2. 3,377 views
In the course of research, a chemist isolates a new compound with an empirical formula C3H3O2. 4.97 g of the compound when
1. 1 answer
2. 1,395 views
Consider a 0.70 M solution of Al(NO3)3 in water. What is the nitrate ion concentration in this solution, in units of moles/L?
1. 1 answer
2. 458 views
A solution that contains 55.0 g of ascorbic acid (Vitamin C) in 250. g of water freezes at −2.34°C. Calculate the molar mass
1. 1 answer
2. 3,871 views
What mass of water (in grams) is needed to dissolve 28.7 g of ammonium nitrate NH4NO3 in order to prepare a 0.452 m (molal)
1. 2 answers
2. 1,365 views
heights of young adult u.s women are approximatelynormal with mean 64 inches and standard deviation 2.7 inches. What proportion
1. 4 answers
2. 1,486 views

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