7= 16 + 3x
7-16 = 3x
-9 = 3x
x = (-9)/(3)
x = -3
9514 1404 393
Answer:
15 cm
Step-by-step explanation:
The formula for the surface area of the cone is ...
A = πr² +πrL = πr(r +L)
The radius of this cone is half its diameter so is (12 cm)/2 = 6 cm. Then the slant height L can be found from ...
126π cm² = π(6 cm)(6 cm +L)
21 cm = 6 cm +L . . . . . . . . . . . . . . divide by 6π cm
15 cm = L . . . . . . . . . . . . . . . . subtract 6 cm
The slant height is 15 centimeters.
Answer:The square roots of 13 is 3.6, The square root of 85 is 9.2
Step-by-step explanation:
8/18 = 4/9 ( divide both numerator and denominator by 2 )
√4 = 2 and √9 = 3
Answer:
B ) 2/3
Answer:
Cos a = 3/8.
Step-by-step explanation:
If you want cos a you use the identity cos a = 1 / sec a,
so cos a = 1 / 8/3
= 3/8.
