Question

I need help.........​

Answer 1

9514 1404 393

Answer:

• s = 17
• t = 5

Explanation:

The midpoint formula is useful here. For midpoint M, we have ...

M = (C + D)/2

2M = C + D

2(10, 10) = (15, s) +(t, 3)

(20, 20) = (15+t, s+3)

t = 20 -15 = 5

s = 20 -3 = 17

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Check

(C +D)/2 = ((15, 17) +(5, 3))/2 = (20, 20)/2 = (10, 10) . . . checks OK