Answer:
put a more clear pic
Step-by-step explanation:
Answer:
70
Step-by-step explanation:
Answer:
65 degrees, because vertical angles are always congruent.
Step-by-step explanation:
Answer:
16
Step-by-step explanation:
Start by adding 9 to both sides, obtaining: √(x + 9) = 5.
Square both sides, obtaining: x + 9 = 25.
Subtract 9 from both sides: x = 16
Note that √(16+9) - 9 = -4, as required.
Answer:
The opposite of a number is its additive inverse. The sum of a number and its opposite is zero. (This is sometimes called the property of opposites ). a+(−a)=0.
