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Zack
Questions and answers by
Zack
, page 2
Questions (166)
Determine the molar solubility of lead(II) iodide, PbI2, in 0.050 mol/L NaI.
Ksp of PbI2 = 9.8 x 10^(-9)
1 answer
911 views
How many hands of 5 cards can be made from a standard deck of cards such that each hand contains exactly 1 red card and 4 black
2 answers
831 views
Prove the identity:
cos^4 x + sin^4 x = 1 - (1/2)sin^2 (2x)
1 answer
329 views
When setting the price of admission tickets for the amusement park, Tabitha wants the price for a two child, two- adult family
2 answers
740 views
One side of a triangle is 3 inches shorter than twice the length of the shortest side. The third side is 5 inches longer than
2 answers
681 views
Whish analogy would best go with this one? A:Z::
A. girl:mother B. weight:pounds C. truth:lie D. prologue: epilogue
1 answer
353 views
Would this be D if not Which analogy would best go with this one? A:Z::
A. girl:mother B. weight:pounds C. truth:lie D. prologue:
1 answer
394 views
I think this is C if not Which analogy would best go with this one? branch:tree::
A. flower:garden B. teo:three C.
1 answer
389 views
Larry stands on a bathroom scale while riding up in an elevator. His mass is 75 kg. At the current time the scale reads 100 lb.
1 answer
417 views
Larry stands on a bathroom scale while riding up in an elevator. His mass is 75 kg. At the current time the scale reads 100 lb.
1 answer
513 views
The road runner drops a boulder from a 53 meter high building. When the block is 14 meters above the ground, the 2 meter tall
2 answers
534 views
What is a bi-wheel vehicle?
3 answers
447 views
1 Catriona is deciding how large of a cake to order for a party. She can choose from a 1-layer cake that serves
10 people, a
3 answers
527 views
A kaleidoscope is a tube-shaped instrument that contains mirror and colored glass. When a viewer looks in
one end, (s)he sees
2 answers
496 views
A ball is thrown vertically upward with an initial velocity of 135 feet per second, the ball’s height after t second is s(t) =
2 answers
539 views
Amita decides that she wants the molds to have a square base.How many of the possible molds can she use?
7 answers
3,139 views
Hannah made 0.7 of her free throw in a basketball game,abra made 9/10 of her free throws,dena made 3/4 of her free throws,who
4 answers
1,220 views
How would you describe the environment of New York City?
4 answers
422 views
The 80 8th graders took a trip. The boys numbered 16 fewer than twice the number of girls. How many of the eighth graders are
2 answers
786 views
Elizabeth took 13 minutes less than twice as long as Heather to solve the puzzle if their total time together was 23 minutes who
5 answers
965 views
Jeffrey biked to the store at 12 miles an hour but took his time on the way home going 8 miles an hour. If it took him 20
2 answers
516 views
My divisor is 9, I am greater than 7 times 9, I am less than 8 times 9,my remainder is 7,what dividend am I ?
7 answers
2,483 views
Why is photosynthesis an example of a chemical reaction, and why is it classified as endothermic?
7 answers
2,199 views
The revenue from selling q items is R(q)=475q−q2, and the total cost is C(q)=175+6q. Write a function that gives the total
2 answers
1,096 views
A fence is to be built to enclose a rectangular area of 320 square feet. The fence along three sides is to be made of material
4 answers
6,150 views
The manager of a large apartment complex knows from experience that 90 units will be occupied if the rent is 444 dollars per
2 answers
593 views
A manufacture has been selling 1400 television sets a week at $480 each. A market survey indicates that for each $24 rebate
2 answers
1,058 views
what is the schwarzschild radius of a black hole with a mass of 1.68x10^43kg
1 answer
366 views
An airplane is flying at an altitude of 4000 feet and descends at a rate of 200 ft./m determine whether the altitude is
2 answers
590 views
Find the equation of the line in the xy-plane that goes through the origin and makes an angle of 1.2 radians with the positive
2 answers
869 views
Find the slope of the radius of the unit circle that corresponds to the given angle.
7π/6 radians
3 answers
1,108 views
A chemist wants to create a solution that is 24% acid. How many liters of a 40% acid solution must be added to 50 liters of an
2 answers
512 views
A solid ball is released from rest and slides down a ramp that makes an angle of 50 degrees with respect to the horizontal. a)
1 answer
791 views
What is 29x47 in expanded algorithm
3 answers
707 views
X is a point 7cm from the center of circle O with radius 9 cm. AXB is a chord of the circle such that AX= 2 XB. Find the length
2 answers
540 views
For a specific type of machine part being produced, the diameter is normally distributed, with a mean of 15.000 cm and a
3 answers
739 views
Planet X, a recently discovered planet, contains life forms that have double-stranded DNA as the genetic material. The DNA on
2 answers
575 views
What is the function of a eukaryotic promoter sequence?
3 answers
826 views
A fair coin is tossed 5 times. If X is the discrete variable the # of tails obtained,
a) Draw the probability distribution . b)
1 answer
657 views
A firework is launched from a cliff overlooking the ocean. The elevation of the firework shell, in feet above sea level, t
4 answers
699 views
jessica depoists 3000 in the bank. her money doubles in 12 years. how much was her intrest rate per year(assume annual
1 answer
352 views
what are two symptoms the author experiences when exposed to perfume?
3 answers
362 views
Heat and pressure deep beneath the Earths surface can change any rock into
A) chemical rock B) gemstone C) metamorphic rock D)
112 answers
16,230 views
Find the function rule.
X = -2, -1, 0, 1, 2. Y = 9, 4, -1, -6 -11. Help please this is too hard
1 answer
339 views
If sin (theta) = sqrt5 / 3 and cos (theta) = 2 / 3 which of the following is tan (theta)?
12 answers
5,373 views
An automobile dealership uses CODE = 1 for new automobiles, CODE = 2 for used automobiles, and CODE = 3 for separate
2 answers
553 views
Given the function f(x) = 3x +4
Determine the value of f(x) for the point (-1, f(x))
3 answers
421 views
Jake is walking up hill in the sand. Every step Jake takes he climbs 2 feet up, but slides down 6 inches. How far has Jake
4 answers
808 views
If f(x) = -3x + 8, find f(5)
3 answers
410 views
The population, in millions, of a city t years after 2000 is given by the function P(t) = 2.9 - 0.008t.
Which statement is true?
2 answers
1,311 views
I have looked and I can not find the definition for acquired traits I'm looking for the def. part of speech & synonym Please
4 answers
689 views
The equilibrium constant (Kp) for the interconversion of PCl5 and PCl3 is 0.0121:
PCl5 (g) ↔ PCl3 (g) + Cl2 (g) A vessel is
4 answers
11,880 views
A pole sits on top of a tall building an observer on ground 17 m away from building finds the angle of elevation to the base of
6 answers
693 views
Width of a wall is 4 inches less then the length. The border that surrounds the wall is 2 inches wide and has an area of 240
3 answers
552 views
A ship travels downstream for 36 miles and then makes the same return trip upstream. The trip downstream took 3/4 of an hour
7 answers
1,026 views
A recatangular yard is to be made with 120 feet fencing. The yard is divided into 4 equal parts. And an existing property fence
6 answers
586 views
3 engineers decide to measure the distance across a small area of the ocean. Mojo and Norah are on opposite sides of the ocean.
1 answer
445 views
I'm just curious to know are there any incentives or point system for answering questions here? Like what drives people to?
4 answers
443 views
A recatangular pen is to be made with 120 feet fencing. The pen is divided into 4 equal parts. And an existing property fence
3 answers
758 views
Exits on an interstate are numbered consecutively.
The distance between Exit 12 and Exit 13 is 2.7 miles. The distance between
3 answers
1,078 views
You invest $4000 in an account paying 4.1% continuously compounded interest. How much will you have in 8 years
2 answers
489 views
Suppose the ball is thrown downward with an initial velocity of 3 m/s instead of being dropped at 60m high on a cliff. How far
1 answer
423 views
two more than seven times Lynn’s age
3 answers
373 views
What information does the geologic time scale provide?
3 answers
1,001 views
what do we need to add to the sequence to take triangle ABC onto triangle A'B'C?
1 answer
70 views
Find the circumference of the circle use 3.14 for pi 6MM
1 answer
53 views
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