2r² − 28r + 38 = 0
2 (r² − 14r) = −38
2 (r² − 14r + 49) = −38 + 2(49)
2 (r − 7)² = 60
(r − 7)² = 30
the answer is 2(r-7)² =60
Answer:
surface area (rounded to the nearest tenth) : 282.7 yd²
Step-by-step explanation:
Formula ……………………………………………………………
surface area of a cylinder = 2 × (area of the base) + the lateral surface area
= 2πr² + 2πrh
= 2πr(r + h)
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surface area of a cylinder = 2×π×3×(3+12)
= 282.743339 yd²
Answer:
10
Step-by-step explanation:
Addition 2/9+7/9=1. 1+7+2=10
It goes in 3000, 333.33 times.
Answer:
K= -3
Step-by-step explanation:
-3k+6=15
-6 -6
-3k=9
/-3 /-3
k=-3
subtract 6 from both sides.
divide each side by -3 to get K alone
-3 is your answer.
