<p>I need help with this problem. It's in the BB, Pg. 339, #13. Thanks for the help. Also, on Pg. 337, #6. Thanks</p>
<p>If x is an integer and 2 <x <7,="" how="" many="" different="" triangles="" are="" there="" with="" sides="" of="" lengths="" 2,="" 7,="" and="" x.="" take="" the="" triangle="" side="" theorem="" into="" consideration.="" one="" must="" be="" x="">= 8 (greater than or equal to 8) because if you add 2 sides together they must be larger than one side. To extrapolate for any property of triangles, just use a 3-4-5 triangle. 3+4 > 5; 5+3 > 4
So answer A., One, would be the correct answer. :)</x></p>
<p>page 339 #13
estimate that x = -1 ; -5
estimate that y = 5 : -7</p>
<p>/x+y/ could be A)0
B)4
C)8
E)12</p>
<p>However /x+y/ cannot be D) 10</p>
<p>That was number 12! haha, that was silly.
Okay, I'll make up for it by
p. 337 #6...okay? :) </p>
<p>In the figure above, OX is a radius of the circle iwth a center O. Which of the following traingles has the <em>least</em> area?
You could eyeball it, or just use some reasoning.
Triangle=1/2bh...the base for each of the triangles is the same. What is changing? Simply, the height, or the radii being drawn from the point O. Which height is the least? Let's take, say, a dry noodle...and place it in each triangle individually. Which height would have the shortest noodle? The answer is A. AOX.
Sorry about the first answer :) x</p>
<p>Thanks for the help guys.</p>
<p>Me again, can I get help with question #8 Pg. 369. Thanks again. I guessed 8 but the answer was 9.</p>
<p>aright ill try to explain this one. it says f(x+5)=f(x) which means that the function follows one entire cycle of the function shown every 5 units. in 5 units, the f(x)=0 (or in other words hits 0) 4 times correct?
But they want 12 units. So another 5 units would be 8 times. That is only 10, you need 2 more units. so you look at your function to see if the function crosses 0 before 2. It does so once, so you add that to your 8 times to get 9.</p>
<p>hope that helped</p>
<p>Wow, that helped a lot. So, on the SAT, when they say f(x+n)=f(x), that means that one cycle of the function occurs in n units? Thanks for the help.</p>