2ft 3in = how many inches
1 answer:
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Answer:
see explanation
Step-by-step explanation:
given
f'(x) = 12cos x - 4sin x, then
f'() = 12cos(
) - 4sin(
)
[ cos() = -cos(
), sin(
= - sin(
) ]
= -12cos() + 4sin(
)
= - 12 × + 4 ×
= - 6 + 2 ≈ - 2.536 ( 3 dec. places )
Step-by-step explanation:
6a
Sn = n/2 [2a + (n-1) d]
(2Sn)/ n = 2a + (n - 1) d
2a + (n-1) d = (2Sn)/n
(n-1) d = (2Sn - 2a)/n
6b
d = ¹/16
7a.
E = (mv²)/2 + mgh
E = m( v²/2 + gh)
E/m = v²/2 + gh
E/m - gh = v²/2
2(E/m - gh) = v²
so
7b.
v = 14 m/s