the answer is 43.6
Three significant figures.
86.346 +54.43 9.5 _______ 150.276 Now after we round the number and write it in significant figures , so it should look like this; 150 why? because when we need to round a number using the significant figures , we must look for the smallest significant figures which is 9.5 .
43.3
4 of them.
2621.92
the answer is 43.6
Three significant figures.
The least number of significant figures in any number of the problem determines the number of significant figures in the answer.
14.68 + 20
86.346 +54.43 9.5 _______ 150.276 Now after we round the number and write it in significant figures , so it should look like this; 150 why? because when we need to round a number using the significant figures , we must look for the smallest significant figures which is 9.5 .
The real answer is 33.443 but since 12 is the number with the least significant figures your answer will be 33
2 significant figures.
43.3
There are 5 significant figures, the six plus the four zeroes. The zeroes are significant figures due to the inclusion of the decimal - with no decimal there would only be one significant figure (the six).
It has three.
4 of them.