Answer:
angle APF
Step-by-step explanation:
85 / 15 = 5 2/3
30 x 5 = 150
2/3 x 30 = 20
The answer is 170 seconds, or 2 minutes and 50 seconds
10.62 seconds
ignore:
(i am writing this bc i need at least 20 characters)
The second choice is correct. We know that x is less than or equal to five, so there should be a mark at 5 with the arrow pointing left. Since the problem shows the less than or equal to sign, the circle should be filled in.
Express the matrix like , where if and if . ( is known as kronecker's delta)
In the same form we express the matrix .
The firs index indicate the row and the second the column.
By the multiplication of matrices we have , where
because only is non-zero in the last sum.
therfore we have .
In the same manner we have
, where
And so,