Amodel builder has 30 pieces of balsa wood in a box. four pieces are 15 inches long, 10 pieces are 12 inches long, and the rest are 8 inches long. what is the probability the builder will pull an 8-inch piece from the box without looking?

The probability is 53.33%.

Step-by-step explanation:

A model builder has 30 pieces of balsa wood in a box.

4 pieces are 15 inches long.

10 pieces are 12 inches long.

Says rest are 8 inches. So, rest are

16 pieces are 8 inches long.

Now, we have to tell the probability the builder will pull an 8-inch piece from the box without looking.

The probability is given by=

Hence, the probability is : or

If we want this in percentage this is 53.33%.

d. bc = 12 and ef = 16

step-by-step explanation:

we are given that δabc : δdef such that .

also, it is given that

so, from the options, we need that .

a.

b.

c.  

d.

as, we can see that only option d gives the same ratio as i.e. .

hence, the possible lengths are bc = 12 and ef = 16.

2 and 1.

step-by-step explanation:

plug in each answer. 0 doesn't work, 1 does. so does 2. 4 doesn't:

0 = 1 is not true.

2 = 2 is true.

4 = 4 is true.

8 = 16 is not true.

hope this !