All 100 targets have a solution.
\(1 = 49^{9 - 9 }\)
\(2 = 4 - \frac{ 9 + 9 }{ 9 }\)
\(3 = \frac{ 99 }{ 4! + 9 }\)
\(4 = 9 - ( \frac{ 9 }{ 9 } + 4 )\)
\(5 = 99 - 94 \)
\(6 = \sqrt{49} - \frac{ 9 }{ 9 }\)
\(7 = \frac{ 99 }{ 9 } - 4 \)
\(8 = \frac{ 9 }{ 9 } + \sqrt{49 }\)
\(9 = \frac{ 99 }{ 9 } - \sqrt{4 }\)
\(10 = 4^{9 - 9} + 9 \)
\(11 = 9 - \sqrt{49} + 9 \)
\(12 = \sqrt{49 \cdot 9} - 9 \)
\(13 = 94 - 9 \cdot 9 \)
\(14 = \frac{ 9 }{ 9 } + 4 + 9 \)
\(15 = \frac{ 99 }{ 9 } + 4 \)
\(16 = ( \frac{ 9 + 9 }{ 9 } )^{4 }\)
\(17 = 9 - ( 4 - \sqrt{9} ) + 9 \)
\(18 = ( 9 - \sqrt{49} ) \cdot 9 \)
\(19 = \sqrt{49} + \sqrt{9} + 9 \)
\(20 = \sqrt{9} \cdot 9 - \sqrt{49 }\)
\(21 = ( 9 - 4 )! - 99 \)
\(22 = 49 - \sqrt{9} \cdot 9 \)
\(23 = 9 - 4 + 9 + 9 \)
\(24 = \frac{ 99 - \sqrt{9} }{ 4 }\)
\(25 = \sqrt{49} + 9 + 9 \)
\(26 = \frac{ 9 + 9 }{ 9 } + 4 !\)
\(27 = \frac{ 99 + 9 }{ 4 }\)
\(28 = 4 + \sqrt{9}! + 9 + 9 \)
\(29 = \frac{ 99 }{ \sqrt{9} } - 4 \)
\(30 = \sqrt{49 \cdot 9} + 9 \)
\(31 = 49 - 9 - 9 \)
\(32 = 9 \cdot 9 - 49 \)
\(33 = \sqrt{\frac{ 99^{\sqrt{4}} }{ 9 }}\)
\(34 = 49 - 9 - \sqrt{9 }!\)
\(35 = \frac{ 99 }{ 9 } + 4 !\)
\(36 = ( 9 - ( 9 - 4 ) ) \cdot 9 \)
\(37 = 49 - 9 - \sqrt{9 }\)
\(38 = \sqrt{9} \cdot 9 + \sqrt{4} + 9 \)
\(39 = ( \sqrt{9} + 9 ) \cdot 4 - 9 \)
\(40 = 49 - \sqrt{9 \cdot 9 }\)
\(41 = \frac{ 99 + 4! }{ \sqrt{9 } }\)
\(42 = ( 9 - \sqrt{9} ) \cdot \sqrt{49 }\)
\(43 = 49 - 9 + \sqrt{9 }\)
\(44 = \frac{ 99 \cdot 4 }{ 9 }\)
\(45 = \frac{ 99 - 9 }{ \sqrt{4 } }\)
\(46 = 49 - \frac{ 9 }{ \sqrt{9 } }\)
\(47 = 49 - \frac{ \sqrt{9}! }{ \sqrt{9 } }\)
\(48 = 49 - \frac{ 9 }{ 9 }\)
\(49 = 49 - 9 + 9 \)
\(50 = 99 - 49 \)
\(51 = \frac{ 99 + \sqrt{9} }{ \sqrt{4 } }\)
\(52 = \frac{ 9 }{ \sqrt{9} } + 49 \)
\(53 = \sqrt{9}! \cdot 9 - 4 + \sqrt{9 }\)
\(54 = \sqrt{49} \cdot 9 - 9 \)
\(55 = 49 - \sqrt{9} + 9 \)
\(56 = ( 9 - \sqrt{9} ) \cdot 9 + \sqrt{4 }\)
\(57 = \frac{ 99 }{ \sqrt{9} } + 4 !\)
\(58 = \sqrt{9 \cdot 9} + 49 \)
\(59 = \sqrt{9}! \cdot 9 - 4 + 9 \)
\(60 = \sqrt{49} \cdot 9 - \sqrt{9 }\)
\(61 = 49 + \sqrt{9} + 9 \)
\(62 = \sqrt{4}^{\sqrt{9}} + \sqrt{9}! \cdot 9 \)
\(63 = 99 - 4 \cdot 9 \)
\(64 = 49 + \sqrt{9}! + 9 \)
\(65 = 4^{\sqrt{9}} + \frac{ 9 }{ 9 }\)
\(66 = 99 - 4! - 9 \)
\(67 = 49 + 9 + 9 \)
\(68 = 9 \cdot 9 - 4 - 9 \)
\(69 = ( 9 + 9 ) \cdot 4 - \sqrt{9 }\)
\(70 = 9 \cdot 9 - \sqrt{4} - 9 \)
\(71 = \sqrt{\frac{ 9 }{ 9 } + \sqrt{49 }!}\)
\(72 = \sqrt{49} \cdot 9 + 9 \)
\(73 = 4^{\frac{ 9 }{ \sqrt{9} }} + 9 \)
\(74 = 9 \cdot 9 - \sqrt{49 }\)
\(75 = 99 - 4 \cdot \sqrt{9 }!\)
\(76 = 94 - 9 - 9 \)
\(77 = \sqrt{9 \cdot 9} \cdot 9 - 4 \)
\(78 = 99 - 4! + \sqrt{9 }\)
\(79 = 94 - 9 - \sqrt{9 }!\)
\(80 = 9 \cdot 9 - 4 + \sqrt{9 }\)
\(81 = 9^{9 - \sqrt{49 }}\)
\(82 = 94 - 9 - \sqrt{9 }\)
\(83 = 9 \cdot 9 - 4 + \sqrt{9 }!\)
\(84 = 99 - 4! + 9 \)
\(85 = 94 - \sqrt{9 \cdot 9 }\)
\(86 = 99 - 4 - 9 \)
\(87 = 99 - 4 \cdot \sqrt{9 }\)
\(88 = 9 \cdot 9 + \sqrt{49 }\)
\(89 = 99 - 4 - \sqrt{9 }!\)
\(90 = ( 9 - 4 ) \cdot ( 9 + 9 )\)
\(91 = 94 - \frac{ 9 }{ \sqrt{9 } }\)
\(92 = 99 - \sqrt{49 }\)
\(93 = 94 - \frac{ 9 }{ 9 }\)
\(94 = 94 - 9 + 9 \)
\(95 = \frac{ 9 }{ 9 } + 94 \)
\(96 = 9 \cdot 9 + 4! - 9 \)
\(97 = \frac{ 9 }{ \sqrt{9} } + 94 \)
\(98 = 99 - 4 + \sqrt{9 }\)
\(99 = ( 4 - \sqrt{9} ) \cdot 99 \)
\(100 = 94 - \sqrt{9} + 9 \)