Simplify the expression. If any variables exist, assume that they are positive.7 + 15

A. 22
B.
C. 22
D. 22


Answer: C

Mathematics

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One formula used to determine the pediatric dose of medication is c =? d where w = the child's weight in lb, d = the adult dosage and c = the child's dosage. If the adult dosage of a certain medication is 2 oz, what is the child's dosage for a child weighing 25 lb.?

A. 3 oz
B. 1 oz
C.  oz
D.  oz

Mathematics

Evaluate using a calculator. Express answers to the nearest ten-thousandth.log 266

A. 5.5835 B. 2.4232 C. 2.4265 D. 2.4249

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Graph the equation.-x = -9y + 2

A.

B.

C.

D.

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Determine if the matrix is in row-echelon form.

A. Yes B. No

Mathematics