A=148°
B=148°
Step-by-step explanation:
180-38=148°
because A and B are equal, they're both 148°
since triangles are similar
4/x = 7x/7
=》 4/x = x
=》x^2 = 4
=》 x = 2
for right triangles a^2 = b^2+c^2
DF^2 = 7^2+2^2 = 53
=》 DF = 7.28
perimeter of DEF = 7 +2+7.28 = 16.28
I Think The answer is 35 units I hope it helps Message Me if I’m wrong and I’ll change My answer and fix it for you
Answer:
1) 2a^2b-4a^3b^6-6+ab
sorry i can only do number 1 rn.
Step-by-step explanation:
