Can you answer a few Math Review questions for me?
1. The average velocity (speed) v of any object is found using the formula v = d / t. If a car is moving at a constant speed and travels 12 kilometers in 20 minutes, find its velocity in kilometers per hour.
2. Simplify: 7.23 x 10 to the – 4 power.
3. Use unit analysis to solve the following. (Please show work using unit analysis)
a. 30 fl oz = _____ qt
b. 2.3 m = _______ km
4. Name the property being illustrated.
x(3 + y) = 3x + xy
5. Simplify:
– 2 2/7 – (-4)
Well, that’s all, thanks for your time!!! =]
Favorite Answer
v = 12km / 1/3hr
v = 36km/hr
2. 7.23*10^-4 = 7.23 * .0001 = 0.000723
3a. who uses the imperial system these days? not me. search imperial conversions on google.
3b. 1000m = 1km so,
2.3m / 1000 = 0.0023m
4. this one is tough… grade 9 math is a long way back! I think it was called ‘distribution’, but that is going on memory alone. Double-check that.
5. -2 2/7 – (-4) = -16/7 + 4 = 28/7 – 16/7 = 12/7 = 1 5/7
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