The solution is: x= 7 and y = 2
Step-by-step explanation:
Given equations are:

Putting x = 3y+1 in equation 2 from equation 1

Subtracting 1 from both sides

Dividing both sides by 7

Putting y=2 in equation 1

Hence,
The solution is: x= 7 and y = 2
Keywords: Linear equations, substitution method
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Given:
In triangle ABC, AB = AC, AD is angle bisector and measure of angle C is 49 degrees.
To find:
The value of x and y.
Solution:
In triangle ABC,
(Given)
So, triangle ABC is an isosceles triangle and by the definition of base angles the base angles of isosceles triangle are congruent.
In isosceles triangle ABC,



The angle bisector of an isosceles triangle is the median and altitude of the triangle. So, the angle bisector is perpendicular to the base.


In triangle ABD,
[Angle sum property]
Therefore, the correct option is B.
The probability that the bulb is good is 12/15.
Since we have taken 1 item out the remaining total is now 14, so the probability of getting a defective bulb is now 3/14.
Now you multiply the probabilities together to get (12/15)(3/14)=(4/5)(3/14)=12/70=6/35
You need to multiply 30 by 6 so 30times6 =your answer