How do I solve for question number 6
1 answer:
Answer:
Step-by-step explanation:
The rectangle has been split into two right triangles. The hypotenuse of the triangle (the diagonal) is 18. The angle in the triangle is 30. All right triangles have unique relationships between their sides depending on the angles. This triangle must be a 30 - 60 - 90 triangle and its sides will be a scaled version of .
The side 2 correspond to the hypotenuse of length 18. 2*9 = 18 and so the scale factor is 9. To find the remaining sides, multiply each side length by 9 from .
It becomes . So the rectangle is 9 by
.
The perimeter of the rectangle is
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Here’s the answer and how i worked it out step by step. hope this helps :)
Answer:
Step-by-step explanation:
Given expression:
Let u = (x - y):
To factor a quadratic in the form find two numbers that multiply to
and sum to
:
Therefore, the numbers are: -6 and -4.
Rewrite as the sum of these two numbers:
Factor the first two terms and the last two terms separately:
Factor out the common term (u - 2):
Substitute back in u = (x - y):
Simplify: