kprincess16r
22.01.2021 •
Mathematics
Select all the expressions that are equivalent to 9 + 7x - 3y.
[Choice A] 9 + 7x + 3y
[Choice B] 9 - 7x - 3y
[Choice C] 9 - 7x + 3y
[Choice D] 9 + 7x + (-3y)
[Choice E ] 9 - (-7)x - 3y
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Ответ:
A. ratios are both identical (9over 15 and 9over 15)
Step-by-step explanation:
There is no graph attached but I assume it is a right triangle with hypotenuse of 15 and a side of 9 opposite to angle x, and adjacent to angle y
then sinx=cosy= 9/15
A. ratios are both identical (9over 15 and 9over 15)