Simplify the expression. Assume that all variables are positive when they appear.

A. 36x2
B. 6x2
C. 14x2
D. not a real number


Answer: B

Mathematics

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It makes sense that the larger the area of a region, the larger the number of species that inhabit the region. Many ecologists have modeled the species-area relation with a power function and, in particular, the number of species S of bats living in caves in central Mexico has been related to the surface area A measured in of the caves by the equation

S = 0.7A03

(a) The cave called mission impossible near puebla, mexico, has suface area of A=90m2.
How many species of bats would expect to find in that cave?
(b) If you discover that 5 species of bats live in cave estimate the area of the cave.

Mathematics

Round the decimal to the indicated place value.-19.783hundredth

A. -20 B. -19.78 C. -19.780 D. -19.8

Mathematics

Determine whether the given value is a solution of the equation.10(y - 7) = 120; 19

A. A solution B. Not a solution

Mathematics

Convert from one measure to the other.8250 pounds to tons

A. 5 tons
B. 8 tons
C. 4 tons
D. 3 tons

Mathematics