nakeytrag
04.03.2020 •
Mathematics
In the triangle ABC, the side lengths are BC=14 and AC=7. What’s the angle measurement of B.
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Ответ:
18=18
Step-by-step explanation:
a=90-b
a=50 mL at 4%
b=40 mL at 40%
check
0.04*50+0.4*40=0.2*90
2+16=18
18=18