Multiply it out. 3*1+3*4t=3+12t
Answer:
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Answer:
s = 19.0
Step-by-step explanation:
To find s, use the Pythagorean Theorem.
a² + b² = c²
9² + b² = 21²
81 + b² = 441
b² = 360
b = √360
b = 18.97366596 ⇒ 19.0 (rounded to the nearest tenth)
So, s = 19.0.
Hope that helps.
Should be 11 and 6 because when you add 11 and 6 you get 17 and when you subtract them you get 5
