John swam 0.86 km each day for 3 weeks. how many meters did he swim in those 3 weeks?

What is the slope of the line shown below?

What are the excluded values? m+5/mn+3m

Long division setup showing an incomplete calculation. 12 is in the divisor, 6839 is in the dividend, and 5 hundreds and 6 tens is written in the quotient. 6000 is subtracted from 6839 to give 839. an unknown value represented by a box is being subtracted from 839. what number should be placed in the box to complete the division calculation?