Answer:
RT = 20
Step-by-step explanation:
Given S is at the midpoint of RT , then
RS = ST , that is
7y - 4 = 2y + 6 ( subtract 2y from both sides )
5y - 4 = 6 ( add 4 to both sides )
5y = 10 ( divide both sides by 5 )
y = 2
Then
RT = RS + ST = 7y - 4 + 2y + 6 = 9y + 2 = 9(2) + 2 = 18 + 2 = 20
Step-by-step explanation:
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Answer:
your answer is "18"
Step-by-step explanation:
Formula is:
A= 1/2 (A+B) X H
A = 1/2 (CD + CF) X H
A = 1/2 (5+6) X 3
A = 16.5 CM SQUARED
Hope this is right!