Answer:

Step-by-step explanation:
<u>Step 1: Set x to -2
</u>




Answer: 
Answer: 12.56
Explanation: 4x3.14
Answer:
b = 2
Step-by-step explanation:
3b1b-8 = 4
+8 +8
3b1b = 12
3b^2 = 12
/3 /3
b^2 = 4

b = 2
Answer:
39/40
Step-by-step explanation:
Since 39 out of 40 marbles are green, the probability of randomly choosing green is 39/40.
However, the probability becomes 100% when you look into the bag and choose a green marble. (Unless you are blind or unable to distinguish blue from green, in which case the probability remains 39/40.)
Answer is A
Step-by-step explanation:
hope that helps