a triangle has one side that measures 9 units, another side that measures x, and a third side that measures 2 units more than x. the perimeter is 29 units.

which equation would we use to find the value of x?

x + x + 2 = 29
x + x + x + 2 + 9 = 29
x + x + 2 + 9 = 29
x + x + x + 2 = 29

step-by-step explanation:

this linear equation would have just one solution.

step-by-step explanation:

the reason why this would have one solution is that it is an expression with just one variable. since that variable is not raised to a power, it will always have just one solution.

b

step-by-step explanation:

i dont know

you estimate that the angle of elevation to the top of the 86th floor (the observatory) is 82 .the total height of the building is another 123 meters above the 86th floor.

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