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1575=$$3^{x}$$*$$5^{y}$$*$$7^{z}$$,What`s the value of x+y+z?
A box contains a certain number of cards, each of which is labeled by one of the values 4, 8, or 10. The numbers of cards labeled by each value are directly proportional to the values on the cards. What is the least possible number of cards in the box labeled by the value 10?
Three variables, x, y, and z, in a scientific experiment are related by the equation $$z=x^{2}y$$. In the experiment, if the value of x decreases by 40 percent while the value of y increases by 50 percent, what is the percent decrease in the value of z?
If x < -1, which of the following shows $$\frac{1}{\sqrt[3]{x}}$$, $$\sqrt[3]{x}$$, $$\sqrt[5]{x}$$ from least to largest?
The function f is defined by f(x) = 2x – 1 for all numbers x. If the function g is given by g(x) = 3 * f(2x - 1) + 2 for all numbers x, what is the value of g(2)?

g(2)=_____


AB=AC=AD,∠BAD=60°. What is the angle of ∠BCD?


In the figure shown, what is the length of line segment BD?


AB∥ED,△ABC and △EDC are similar triangles,and the area of △EDC equals to $$\frac{1}{9}$$ of the area of △ABC. What is the ratio of AE to EC?
Five different families received tax bills at the beginning of the year. Later, the four lowest tax bills were each reduced by $200 while the highest tax bill remained the same.

Quantity A

The standard deviation of the original five tax bills

Quantity B

The standard deviation of the resulting five tax bills after the four lowest tax bills were reduced






How many different positive three-digit integers are there that have an odd hundreds digit?
The 9 computers in an office are to be interconnected by cables so that each computer is connected directly to each of the other computers. If each cable that connects a pair of the computers counts as one cable, how many cables are needed?
Three numbers are to be selected at random and without replacement from the five numbers 4, 5, 7, 8 and 11. What is the probability that the three numbers selected could be the lengths of the sides of a triangle?
Journal editors note that the peer review process has difficulty detecting _______________: deliberate misinformation, if it is clever enough, might sail right through no matter how scrupulous the reviews.
Although collisions between the largest planetesimal belt are _________, they can release large amounts of debris when they occur.
Although it would be hard to explain the properties of a tornado in terms of the physics of electrons and quarks, this difficulty may be a calculational ___________, not an indicator of the need for new physical laws.
In general, the relationship between neural activity and behavioral output is ____________: multiple behaviors can be associated with activation of the same neurons and multiple neurons can trigger the same behavior.
The foundation`s new president is well aware that the foundation`s charter intends (i)____________ role for the office of president, but he is clearly determined to flout that intention by (ii)____________ as much power and responsibility as possible.
Researchers note that wolves` otherwise strongly hierarchical society is marked by occasional displays of populist (i) _____________ : if a pack leader proves a too-snappish tyrant, subordinate wolves will (ii) _____________ the top cur.
Not all Native American languages have lexical classes corresponding to those of other languages: many have no adjectival category, and some have even brought the ________ of nouns and verbs into question.
Science is a seemingly inexhaustible source of _____________, yet paradoxically scientists have been portrayed in recent decades as rather conservative--resisting innovation in their discipline sometimes to the point of dogmatism.

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