Answer:
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Step-by-step explanation:
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4. You're right that the leg labeled

occurs in a 1-to-2 ratio with the hypotenuse, but more to the point, it also occurs with the leg of length 10 in a 1-to-

ratio. In other words,

and so

5. In this kind of triangle, the legs form a 1-to-

ratio with the hypotenuse, so it follows that

.
6. You have

and

mismatched. The larger leg in this kind of triangle has the

scaling factor. So in fact,

, which makes the larger leg

, and the hypotenuse would be

.
2x + 9 < 0
2x < -9
x < -4.5
x> -12
x = {-11, -10, -9, -8, -7, -6, -5}