Answer:
Step-by-step explanation:
84.5 years roughly
-6,-7, and -8, this is more of a guess and check question
Answer:
There are 123,410 ways
Step-by-step explanation:
The number of ways or combinations in which we can select k elements from a group of n elements is given by:

In this case, we can replace n by 43 and k by 4, because we are going to select 4 light bulbs from a batch of 43 light bulbs.
So, the number of combinations is calculated as:

It means that there 123,410 ways to select 4 light bulbs from a batch of 43 lights bulbs to be tested for defects
<span>=<span><span><span>3*3</span>*3</span>*3
</span></span><span>=<span>3^4
</span></span><span>=<span>81
81 is the answer</span></span>
-2 3/4, -2.7, -1.7, -1, -3/5, -0.5, 0.2, 1 3/4