Final answer:
The approximate value of the square root of 7, V7, to the nearest tenth is obtained using a calculator and rounded based on significant figures. If the digit to be dropped is 5 or greater, round up to obtain the final value rounded to the nearest tenth.
Step-by-step explanation:
The question is asking for the approximate value of the square root of 7, V7, rounded to the nearest tenth. To find this, you can use a calculator or perform the calculation manually through estimation or using a method like the binomial approximation mentioned in the reference information. When we calculate this value using a calculator, we get a number that we need to round to the nearest tenth based on significant figures. According to the reference, when we are rounding a number and the first digit to be dropped is 5 or greater, we round up. Therefore, if a calculator gives us a number like 2.645 for the square root of 7, we would round this to 2.6 to the nearest tenth.