5 + x = 5x
Hopefully this is what you meant.
Answer:
24
Step-by-step explanation:
9514 1404 393
Answer:
B. a = plus-or-minus 4
Step-by-step explanation:
3a² -21 = 27 . . . . . . . given
3a² = 48 . . . . . . . . . . add 21 to both sides (desired form)
a² = 16 . . . . . . . . . . . divide both sides by 3
a = ±4 . . . . . . . take the square root
Hello There!
The third missing length would be 68°
All sides of a triangle always add up to 180°
We take the two sides we do know, add them together and then subtract the two sides added together from 180°