Astudent measures the volume of a liquid and finds it to be 40 ml how many significant figures are in the measurement

The number of significant figures in the reading is one.

Significant figures are used to represent the accuracy of a reading. The greater the number of significant figures, the greater the accuracy that is involved. To the left of the decimal point, the first significant figure is the first non-zero number. Therefore, in this case, the reading may have been 41 ml to two significant figures, but it becomes 40 ml when taken as one significant figure.

m=9

step-by-step explanation:

7m+8=71 subtract   8 from 71 which is 63 than divide it by 7m   equal 9.

                             

So what you would do is go through and add 3 teaspoons(tsp) 6 times because of the 6 tablespoons(tbsp). which will give you an answer of 18. another way is to multiply 3x6=18.