Question 6 Analysis showed that the lower the temperature, the longer the O-rings would be separated from the joint, allowing dangerous gases to escape.
The temperature at the launch of the Challenger shuttle was approximately 31°F, about 20°F colder than during any previous shuttle launch.
Would you have recommended the Challenger be launched on that ill-fated day? Give reasons for your answer.

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check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.

x + 4/7

step-by-step explanation:

use cymath