PLEASE Help Me SOLVE NUMBER 3 PLEASE
1 answer:
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Questions:
A clothing manufacturer uses the model a = √(f + 4) - √(36 - f) to estimate the amount of fabric to order from a mill. In the formula, a is the number of apparel items (in hundreds) and f is the number of units of fabric needed. If 400 apparel items will be manufactured , how many units of fabric should be ordered?
Answer:
32 units of fabrics
Step-by-step explanation:
Given
Required
Find f when a = 4
Substitute 4 for a
Rewrite as:
Square both sides
Collect Like Terms
Divide through by 2
Square both sides
Collect like terms
Factorize
or
f can not be 0 because some units must be ordered.
So, f = 32
Answer: B. All real numbers
Step-by-step explanation:
See attached image.
