(Question 2) I put down 10x=20 then did 10x/10=20/10 then got x=2, what do I do with the M

m just means measure. it’s not a variable. you also did your math wrong.

Step-by-step explanation:

it’s tells you that angle ABC is 60°. so the correct equation would be 20+10x=60, and then you would subtract 20 from both sides and get 10x=40. then you divide to get x=4.

false

step-by-step explanation:

whenever we assume a point on a plane then according to geometry it will definitely have 2 dimensions and if it assumed in space then it will have 3 dimensions.

option (b) is correct

step-by-step explanation:

to find the solution of this system, we need to convert it into reduced row-echelon form. we have,

after applying row operations r2 -> r2/2 and r3 -> r3/3, we get,