Step-by-step explanation:
a:b=7:4 b:c=2:5
a:c = 7:5
Just take a calculator and divide 4 by 10 exactly how you see it. Or just divide it like you normally would any number on paper. 0.4 is your answer.
<span>AD←→ is tangent to circle M at point D
so
<QDM = 90
given </span><span>∠DMQ is 50
so
</span>∠<span>DQM = 90 - 50
</span><span>∠DQM = 40
answer
</span><span>∠DQM = 40 degrees</span>
