The expression is given to be:
Recall the multiplication rule of exponent given to be:
Therefore, we can simplify the numerator to be:
Hence, the expression becomes:
Recall the division rule of exponent given to be:
Therefore, the expression becomes:
Evaluating the answer, we have:
Therefore, the answer is:
Answer:
Y=40
Explanation:
Due to the nature of both X and Y varying directly, you can view the problem as a proportion. If x=6 and y=30, that must mean that when x=8 y must equal 40.
6:30 = 8:40
or
30/6= 5
Y/8= 5
Because they vary directly they are equivalent, and so multiply 8 by 5 and get 40.
Divide 27 by 60, then multiply by 100:
27 /60 = 0.45
0.45 x 100 = 45%
Answer:
(−a+b)(−c+d)
=(−a+b)(−c+d)
=(−a)(−c)+(−a)(d)+(b)(−c)+(b)(d)
=ac−ad−bc+bd
