Answer:
Step-by-step explanation:
To be rational means to be able to express the result as the ratio of two whole numbers.
a) 4/7 + (-1/3) = 12/21 - 7/21 = 5/21 so rational
b) √(4) • 2/5 = ±2 • 2/5 = ±4/5 so both solutions are rational
A = square root of 1183
A = 34.39
V = 34.4^3
V = 40707.580
Further samples,
<span>Rounding off numbers to their nearest mentioned position allows approximation from the number value itself. </span>
<span>In the number 63, 849 </span><span><span>
1. </span>Rounding off to the nearest ten thousands would mean the value of 6 which is equal to 60, 000</span> <span><span>
2. </span>Rounding off to the nearest thousands would mean the value of 3 which is equal to 64, 000</span> <span><span>
3. </span>Rounding off to the nearest hundreds would mean the value of 8 which is equal to 63, 800</span>
<span><span>4. </span>Rounding off to the nearest tens would mean the value of 4 which is equal to 63, 850</span> <span><span>
5. </span>Rounding off to the nearest ones would mean the value of 9 which is equal to 63, 859.00</span>
<span>Since there are no decimal values the ones value stays the same. Take note of the rounding off rules between number 0-4 and 5-9.<span> </span></span>
