Answer:
B 12.68
Step-by-step explanation:
you will need to find the distance between each segment-
so the length of DC, CF, FE, ED
DC:
D(-2,-1) C(-1,2)
CF:
C(-1,2) F(1,1)
FE
F(1,1) E(2,-2)
ED
E(2,-2) D(-2,-1)
3.16+2.24+3.16+4.12= 12.68
Derek is 7 years older than Vivian. In 6 years the sum of their ages will be 75. How old is Derek now?
1 answer:
You might be interested in
<u>Given</u>:
The given circle with center at C. The lines AB and AD are tangents to the circle C.
The length of AB is (3x + 10)
The length of AD is (7x - 6)
We need to determine the value of x.
<u>Value of x:</u>
Since, we know the property of tangent that, "if two tangents from the same exterior point are tangent to a circle, then they are congruent".
We shall determine the value of x using the above property.
Thus, we have;
AB = AD
Substituting the values, we get;
Subtracting both sides of the equation by 7x, we get;
Subtracting both sides of the equation by 10, we get;
Dividing both sides of the equation by -4, we get;
Thus, the value of x is 4.