Select 2 of the following pairs of numbers that are opposites. A.-0.1 and 10

B. 7 and 1/7

C. -(-12) and -12

D. 6 and -6

E. 8 and 1/8

PLZ ANSWER FAST WILL MARK BRAINLIEST
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Find the length of the following tangent segments to the circles centered at o and o' whose radii are 5 and 3 respectively and the distance between o and o' is 12. what is the tangent segment of cd?

What values of x satisfy the inequality x^2-9x< 0? how is your answer shown on the graph?

The weight of full–grown tomatoes at a farm is modeled by a normal distribution with a standard deviation of 18.4 grams. the 95 percent confidence interval for the mean weight of the tomatoes is calculated using a sample of 100 tomatoes. what is the margin of error (half the width of the confidence interval)?