4. A bank vault has 3 locks with a key for each lock. Key A is owned by the bank manager. Key B is owned by the senior bank tell
1 answer:
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Answer: Angle addition postulate.
Explanation: If and
here, if we have to prove x=30
If there is a condition that TR is a line which meets with the line segment VS at point R then by the Angle addition postulate, we can say that ⇒
But,
In option (1) substitution property of equality
If there is condition that
then we can use substitution property of equality,
And, in this case ⇒
which is wrong. So, we can not use this property here.
In option (3) subtraction property of equality
There is no use of this property to find the value x.
In option (4) addition property of equality
There is no use of this property to find the value x.
Answer:
Total number of trials is 35.
Step-by-step explanation:
Given : Me and my friend have a hula hoop competition. I win 3 out of every 7 trials. My friend wins 5 more trials than me.
To find : How many trials are in the competition?
Solution :
Probability of my winning is 3 out of 7 trials
and probability of my friend's winning is
Let there be n numbers of trials.
Therefore, my score after n trials
and my friend's score after n trials
Now, the number of trials my friend won more than me is
We know, that my friend won 5 more trials than me so comparing the actual and given we get,
Therefore, total number of trials is 35.
We can also verify our answer by placing value of n,
After 35 trials I will win trials
and my friend will win trials.
Hence, my friend won 5 more trials than me.