Answer:
6 1/2 minutes
Step-by-step explanation:
9 9/10 = 9.9
3 3/5 = 3.6
9.9 + 3.6 = 13.5
13.5 = 13 1/2
20 - 13.5 = 6.5 = 6 1/2
<h3>
Answer:</h3>
B) (x + 7)^2 = 20
<h3>
Step-by-step explanation:</h3>
You can subtract 34 from the original equation to get
... x^2 +14x = -29
Now, you can add the square of half the x-coefficient, and you will have ...
... x^2 +14x +49 = -29 +49
... (x +7)^2 = 20 . . . . . . matches selection B
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<em>Comment on answer choice A</em>
The question asks for the form (x -p)^2 = q, but that does not mean that p must be positive. Here, p=-7 and q=20.
Answer:
no
Step-by-step explanation:
this is incorrect because it will not be double every month.
Answer: 12 observations
Step-by-step explanation:
1 year = 12 months
Number of observations = 1 per month
Therefore number of observations
for a year = 1 × 12
= 12 observations.
