The sum is: 1333 km
5.2
The least number of significant figures in any number of the problem determines the number of significant figures in the answer.
No, counting numbers you can ignore or say they have an infinate number of significant digits. By counting numbers I mean things you count, or non measurements, or numbers you wouldn't round to significant digits anyway . Measurements always have significant digits.
It has 4 significant figures.0.007080 has four significant digits.
Significant digits are digits that provide useful information, for instance 123 has 3 significant digits and 30010 has 4 significant digits. So basically zeros aren't significant unless they are between two other numbers. 0.1020 has only 4 significant digits. A+: 4
12.7
4,777 km
The product is 11 mm
The correct format for an American Express card number, which consists of 15 digits, is XXXX XXXXXX XXXXX.
4 of them.
26.0
Four significant digits in 50.00.
5.2
4.0 x 10-2 * 8.1 x 102 = 32.4 2 significant digits, so the answer is 32.
To express 1602 to 2 significant figures, you identify the first two non-zero digits, which are 1 and 6. Rounding the number, it becomes 1600. Thus, 1602 correct to 2 significant figures is 1.6 × 10^3.
An American Express credit card number is typically 15 digits long and starts with the number 3.
The number 456 has three significant digits. All non-zero digits are considered significant, so each of the digits 4, 5, and 6 counts towards the total.