Use the properties of exponents to simplify the expression so that only positive exponents remain.
?

?

A.
B.
C.
D.
E.

Answer: C

Mathematics

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A. - 
B. 7
C.
D. - 

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Solve. Write the fraction in simplest form.Johanna has a  - lb mixture of cashews and peanuts that includes  lb of cashews. How many pounds of peanuts are in the mixture?

A.  lb
B.  lb
C.  lb
D.  lb

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Convert the measurement as indicated. Round to the nearest tenth, if necessary.21 ft to meters

A. 6.3 m B. 68.9 m C. 19.1 m D. 7.0 m

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Solve the problem.The pH of a chemical solution is given by the formula  pH = -log10[H+]  where [H+] is the concentration of hydrogen ions in moles per liter. Find the pH if the [H+] = 5.2 × 10-4.

A. 4.28 B. 4.72 C. 3.28 D. 3.72

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