The value of a professional basketball player's autograph rose 40% in the last year. It is now worth $322.00. What was it worth
1 answer:
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Answer:
64 square units
Step-by-step explanation:
Split the figure into 2 rectangles of dimensions:
4 × 10
8 × 3
And solve.
(4 × 10) + (8 × 3) = 40 + 24 = 64 square units
See the attached image for a model.
Solution: The missing reason in Step 8 is substitution of .
Explanation:
The given steps are used to prove the formula for law of cosines.
From step 5 it is noticed that our equation is
..... (1)
From step 7 it is noticed that the value of is
.
So by substituting for
in equation (1) we get the equation of step 8, i.e.,
Hence, the missing reason in Step 8 is substitution of .