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kozerog [31]
2 years ago
9

Directions: Evaluate each rational expression using the indicated values of the variable.

Mathematics
1 answer:
xeze [42]2 years ago
3 0

Answer:

1) \:  \:  \frac{5x}{2y}  \\ a) \:  \: x = 8  \:  \: and \:  \: y = 10 \\  \frac{5x}{2y}  \\  \frac{5(8)}{2(10)}  \\  \frac{40}{20}  \\ 2 \: ans \\  b) \:  \:  \frac{5x}{2y}  \\  \frac{5( \frac{1}{2}) }{2( \frac{2}{3}) }  \\  \frac{2.5}{1.3}  \\  \frac{25}{13}  \\ 1.92 \:  \: ans \:  \\  \\ 2) \:  \:  \frac{a {b}^{3} }{c}  \\  \\ a) \:  \: a = 4 \:  .\: b = 3 \: . \: c = 2 \\  \\  \frac{a {b}^{3} }{c}  \\  \frac{(4) {(3)}^{3} }{2}  \\  \frac{4(27)}{2}  \\  \frac{108}{2}  \\ 54 \:  \: ans \:  \\  \\ b) \:  \: a =  - 2 \: . \: b =  - 2 \: . \: c = 2 \\  \\  \frac{a {b}^{3} }{c}  \\  \frac{( - 2) {( - 2)}^{3} }{2}  \\  \frac{ - 2 { (- 2)}^{3} }{2}  \\  \frac{ - 2( - 8)}{2}  \\  \frac{16}{2}  \\ 8 \:  \: ans \:

Step-by-step explanation:

question 3 is already answered by me in your question..or you can see attachment.

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