Answer:
? = 125°
Step-by-step explanation:
The central angle is equal to the measure of the arc that subtends it, thus
? = 125°
Step-by-step explanation:
Follow PEMDAS

P: Parentheses
E : Exponents
M: Multiplication
D: Division
A: Addition
S: Subtraction

Question 2

The answer is 2/3 or 0.66666...
A title could be the effect of the amount/number of days on the amount/number of bacteria. For the 2nd The IV is temperature, the DV is Enzyme Activity and a title could be The effect of Temperature on Enzyme activity.