9. Sara has 3 sketchbooks, 1 notebook, and 3 sticky notes. She randomly selects two items to give to her friend, Andy.
a) Draw a tree diagram to represent the possible outcomes.
b) What is the probability that Sara selects a novel?
c) What is the probability that Sara selects a sketchbook and then a sticky note?
d) What is the probability that Sara selects two sketchbooks?
e) What is the probability that Sara selects both items of the same type?

2: 10

step-by-step explanation:

answer: graphs are something you write or draw and equations are math problems

2b2t

explanation:

2b2t

during a construction project, engineers used explosives to excavate 140 feet of tunnel into a mountain. but because of time constraints and environmental concerns, they brought in a tunnel boring machine (tbm) to excavate the rest of the tunnel. the data table lists some observations an engineer made about the length of the tunnel after the tbm was introduced.

which equation represents the length of the completed tunnel based on the number of days since tbm was introduced?

the answer is y = 45x + 140