Answer:
the answer is A.4 in
Step-by-step explanation:
Focus on triangles DFC and DFE. They are both right triangles, and they share the side DF. Moreover, we have DE=DC.
So, the two triangles are congruent, because they are two right triangles with the same hypotenuse and a common leg.
So, the other legs must be equal as well, and we have
which implies
Answer: 25
Step-by-step explanation:
There are two variables which is u and v and is given that u is 3 and v is 7 so input that into the expression and solve.
2(3)^2 + 7 Solve the exponent first
2(9) + 7 Now multiply then add
18 + 7 = 25