Answer:
5/8
Step-by-step explanation:
Answer:
correct answer options are ; C and D
Step-by-step explanation:
By definition, vertical angles are those that are opposite each other when two lines cross and are equal.
Observing the given options;
C. ∠LRE and ∠FRA
D.∠TRF and ∠NRL
In the other options given, it could have been correct if stated as;
A. ∠ARS and ∠ERO
B. ∠NRA and ∠TRE
Answer:
Kindly rewrite the question clearly.
The new square has length: 10 + l, where l is the original length of the square, and it's area is (10 + l)^2;
So, we solve the equation: 3 x l^2 = (10 + l)^2;
Then, 3 x l^2 = 100 + 20 x l + l^2;
Finally, 2xl^2 - 20xl - 100 = 0; / ÷2;
l^2 - 10l - 50 = 0 (we use the quadratic equation formula);
The only positive solution is l = 5(1+ \sqrt{3} );
