davienwatson8
27.11.2019 •
Mathematics
If the perimeter of a triangle is 10x + 5y and two of the sides are 3x + 4y and 5x − y, which is the third side? a. 2x + 2y b. 2x + y c. −2x + 2y d. x + 2y
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Ответ:
Let measure of the 3rd side be 'b'.
Substitute the values of length of the two sides and perimeter in equation and solve for b.
So, 10x + 5y = 3x + 4y + 5x - y + b[Substitute the values]
10x + 5y = 8x + 3y + b
(10x + 5y) - (8x + 3y) = b
10x + 5y - 8x - 3y = b
10x - 8x + 5y - 3y = b
2x + 2y = b
So, the measure of the third side is 2x + 2y.
Ответ:
The slope is 25 degrees per kilometer.
Step-by-step explanation:
The slope = increase of temperature / depth
= (25) / 1
= 25.