Answer:
$3,150
Step-by-step explanation:
To find the sale price, multiply the original price ($3,500) by 0.90. This 0.90 comes from subtracting 10% from 100% and converting the result to the decimal fraction 0.90.
0.90($3,500) = $3,150
Answer: hundredths
C. 7
49 square rooted would be 7 and the 4 in (x+4) would be negative and not positive like the answer shows.
cos A = x.
Because we have a right-angled triangle, m < A + m < C = 90 and sin C = Cos A.
So cos A = x.