12x+1+5x-3=117
(combine like terms)
17x-2=117
(subtract 2 from each side)
17x=115
(divide each side by 17)
x=6.7
(combine like terms)
17x-2=117
(subtract 2 from each side)
17x=115
(divide each side by 17)
x=6.7
Help!! Use #8-10 to answer #11
1 answer:
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Answer:
Approximately 439.6 square millimeters.
Step-by-step explanation:
The formula for the surface area of a cone is the following:
Where, <em>r </em>is the radius and <em>l</em> is the slant height.
The radius is 7 and the slant height is 13. We also use 3.14 for π Thus:
