sarah121868
03.07.2019 •
Mathematics
Suppose x is a number such that 2x=x/2-6. must it then be true that 3x=12. explain your reasoning
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Ответ:
4x = x - 12
4x - x = -12
3x = -12
x = -12/3
x = -4
3x = 123(-4) = 12-12 = 12...falseso 3x = 12 is not true because x = -4
Ответ:
d = 6.48
Step-by-step explanation:
Here we have to use the trigonometric ratio (tan) to find the d.
tan = opposite/adjacent
Here opposite = d; adjacent = 7.2
tan 42 = d / 7.2
0.90 = d/7.2
d = 7.2*0.90
d = 6.48
Hope this will helpful.
Thank you.