The general symbolic proof below is an illustration of what type of proof? Given: w is true
Prove: w → x is true

Assume that ~x is true. Then, ~x → y, and y → z. Since z → ~w, ~x → ~w must be true by the law of syllogism. Therefore, w → x is true.

A.
proof by contradiction
B.
proof by direct reasoning
C.
proof by law of syllogism
D.
proof by contraposition

b.my answer is b.

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0.02040816326

x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation:

last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

7/2

(decimal: 3.5)

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step-by-step explanation: