Answer the question. Give your answer in simplest form.Julia preheated her oven for 8 minutes. What fraction of an hour was this? (1 hour = 60 min)
A. 
hr
B. 
hr
C. 
hr
D. 
hr
Answer: C
Mathematics
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Rewrite the expression as an equivalent expression that does not contain powers of trigonometric functions greater than 1.f(x) = 8 cos2 x
A. 4 - 4 cos 2x B. 1 + cos 2x C. 16 cos x D. 4 + 4 cos 2x
Mathematics
Name the property illustrated by the sentence.4(a + b) = 4(b + a)
A. Distributive property B. Commutative property of addition C. Associative property of addition D. Commutative property of multiplication
Mathematics
Write an augmented matrix for the system of equations. 3x + 9z = 12 8y + 6z = 68 9x + 7y + 8z = 47
A. 
B. 
C. 
D. 
Mathematics
Subtract.775
A. 421 B. 513 C. 1029 D. 521
Mathematics