A rain gutter is to be constructed from a metal sheet of width 48 cm by bending up one-third of the sheet on each side through a
n angle θ.
Show that the cross-sectional area of the gutter is modeled by the function
A(θ) = 256 sin(θ) + 256 sin(θ) cos(θ).
For what angle θ is the largest cross-sectional area achieved?
Show that the cross-sectional area of the gutter is modeled by the function
A(θ) = 256 sin(θ) + 256 sin(θ) cos(θ).
For what angle θ is the largest cross-sectional area achieved?
1 answer:
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Answer:
The child needs a score of 37.2 to move up to the next level of the competition.
Step-by-step explanation:
The mean is the sum of all scores divided by the number of competions. So
In which S is the sum of all her scores and T is the number of competitions.
The child has five competions:
Which means that
She has to get a mean of at least 36.5, so
Her scores are: 35.5, 36.3. 36.6, and 36.9. Her last score, i am going to call x. So
The child needs a score of _____ to move up to the next level of the competition.
This score is x. So