First answer is correct because angles DAB and EAD equal 180 degrees (supplementary)
Is the same as the one you just did.
keep in mind that, going against the current, the current's speed erodes speed from your regular speed, whilst if you're going with the current, the current's speed adds to it.
now, in this case, you row 5mph, going upstream you're only doing 3mph, whatever happened to the other 2mph? well, the current speed eroded them, meaning the speed of the river is 2mph.
now, going downstream with the current, your regular speed is 5mph, and the current is 2mph, since the current adds to yours, then you're going 5 + 2, mph.
<h3>its a figure of hexagon</h3><h3>we know,</h3><h3> sum of hexagon: 720</h3><h3>now,</h3><h3> or, 97+a+165+143+2a: 720</h3><h3> or, 3a + 405: 720</h3><h3> or, 3a: 720 - 405</h3><h3> or, a : 315/3</h3><h3> or, a : 105</h3><h3>therefore, </h3><h3> a : 105</h3><h3> 2a : 2*105</h3><h3> : 210</h3>
x = - 2 and x = 3
to find the zeros set f(x) = 0
3x² - 3x - 18 = 0
divide through by 3
x² -x - 6 = 0
(x - 3)(x + 2) = 0 ⇒ x = - 2 and x = 3 are the zeros