Triangle ABC is congruent to triangle DEF with angle A = 4x,
angle C = 5x+10,
angle E =9x-10,
angle F =6x

Find the value of the largest angle measurement.

What is the number 321,000,000 in scientific notation? also what is the number? ?

Mario has $14.35 left in his wallet. he spent $148.43 for tablecloths. then, he spent $92.05 for napkins. how much money did mario have in his wallet to start with?

Will mark 50 show all what is the solution to the system of equations? use the substitution method and show your work. -5x+y= -3 -15 x+3y=7 explain what your answer in part (a) tells you about the association of the lines in this system.