2. Express the following in exponential form:
(i) log8 0.125 = -1
1. Express the following in logarithmic form:
10-3 = 0.001
Solve, using cross-multiplication:
8x + 5y = 9
3x + 2y = 4
Solve, using cross-multiplication:
√2x – √3y = 0
√5x + √2y = 0
2. The value of expression mx – ny is 3 when x = 5 and y = 6. And its value is 8 when x = 6 and y = 5. Find the values of m and n.
Find the value of m, if x = 2, y = 1 is a solution of the equation 2x + 3y = m.
3. A train travels from city A to city B with constant speed of 36 kmph and returns back to city A with constant speed of 72 kmph. Find average speed during the entire journey.
2. A rifle bullet loses 1/20th of the initial velocity in passing through a plank. Find out the least number of similar planks required to stop the bullet.
Please solve the questions
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