5.7\(ms^{-1}\)
6.0\(ms^{-1}\)
60.0\(ms^{-1}\)
77.5\(ms^{-1}\)
Correct answer is A
\(s = ut + \frac{1}{2}at^{2}\)
\(250 = 6u + \frac{1}{2}(12)(6^{2})\)
\(250 = 6u + 216 \implies 6u = 250 - 216 = 34\)
\(u = \frac{34}{6} \approxeq 5.7ms^{-1}\)
The correct sequence in data processing is
input → process → output
input → output → process
process → input → output
process → output → input
Correct answer is A
No explanation has been provided for this answer.
For what values of m is \(9y^{2} + my + 4\) a perfect square?
\(\pm {2}\)
\(\pm {3}\)
\(\pm {6}\)
\(+12\)
Correct answer is D
No explanation has been provided for this answer.
45
54
56
65
Correct answer is B
\(T_{n} = a + (n - 1)d\)
\(380 = 9 + (n - 1)7\)
\(380 = 9 + 7n - 7 \implies 380 = 2 + 7n\)
\(7n = 380 - 2 = 378 \therefore n = \frac{378}{7} = 54\)
Which of the following is not a data processing method?
Manual
Mechanical
Electronic
Formatting
Correct answer is B
No explanation has been provided for this answer.