Answer:
6
Step-by-step explanation:
There 6 digits in this number so its of magnitude 6.
we are given that
angle(ACF)=90
angle(ACB)=61
sum of all angles along any line is 180
so, we get
angle(ACF)+angle(ACD)=180
we can plug value
90+angle(ACD)=180
angle(ACD)=90
now, we can use formula
angle(ACD)=angle(ACB)+angle(BCD)
now, we can plug values
and we get
90=61+angle(BCD)
90-61=61-61+angle(BCD)
angle(BCD)=29................Answer
The Answer is 21 because 7 and 3 can go in it as well
Use the tens.Try 30x80. 76 rounds up to 80 and 33 rounds down to 30.
