The sum of Jahiem and his sister's age is 21. If Jahiem is 7 years older than his sister, write and solve a system of equations using ) to represent Jahiem's age and s
to represent his sister's age

How do you determine if an ordered pair is a solution to a given equation?

Fill in the table with whole numbers to make 430 in five different ways

"curse these trig-loving pirates! " devora mutters as she looks at the map. then, after thinking for a moment, she walks back to the entrance of the secret cave, measuring 48 meters along the way. after performing a calculation, devora walks back to the empty treasure, faces the entrance, and turns a certain number of degrees to her left before walking 89 meters to the treasure. supposing that the angle at the cave entrance is acute and that devora's calculations were correct, how many degrees did she turn?