Answer: (4+1)+(-10+13)=5n+3
(4+1/11)+(-10+13)=45n+3
Step-by-step explanation:
Answer:
it is C
Step-by-step explanation:
Answer:
y = 10
Step-by-step explanation:
40 = 4y
y = 40 : 4
y = 10
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
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