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In the diagram, line x is parallel to line y,m21= 65°, and m27 = 55°. Stuart says that m212 = 60°. His reasoning is shown. Step
1: mZ8 = 60°, because m21+ m27 +m28 = 180º. Step 2:28 212, because 28 and 212 are corresponding angles. Step 3: So, mZ12 = 60° Use the drop-down menus to explain whether or not Stuart is correct.
2 answers:
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Answer:
2.35 yards/second or 7.07 ft/second
Step-by-step explanation:
The distance to be covered is 55 yards.
The casting cools at the rate of and the temperature must not be allowed to cool more than
.
We know that,
By the time, the temperature reaches , it will take about,
, so it will take about 23.33 seconds.
Also, 55 yards =
So the minimum speed that conveyor must move is,
Hence, the speed of conveyor is 7.07 feet per second.