The sum of five times a number and seven is equal to twelve. A) 5n + 7 = 12
B) 5(n + 7) = 12
C) (5n)(7) = 12
D) 5+n + 7 = 12
What’s the answer

Two streets intersect at a 30- degree angle. at the intersection, the are four crosswalks formed that are the same length. what type of quadrilateral is formed by the crosswalks?

Aproduction manager test 10 toothbrushes and finds that their mean lifetime is 450 hours. she then design sales package of this type of toothbrush. it states that the customers can expect the toothbrush to last approximately 460 hours. this is an example of what phase of inferential statistics

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