<p>I have a couple of math questions i dont get they're from the Barrons book (i dont know which edition)</p>
<ul>
<li>How many angles of a quadrilateral may have negative cosines?
a.0
b.1
c.2
d.3
e.4</li>
</ul>
<p>*The seventh term in the expansion of (1-1/m)^12 is
a. -792/m^6</p>
<p>b.924/m^7</p>
<p>c.-792/m^7</p>
<p>d.924/m^6</p>
<p>e.495/m^8</p>
<p>*if f(x) = 1/x and f[f(x)] = f(x) then x is
a.1 only
b.-1 only
c.1 or -1
d.no real no.
e.any real no. </p>
<p>*If x-1,x,x-1 is a geometric sequence the x is
a.-0.5</p>
<p>b.0.5 </p>
<p>c.2</p>
<p>d.1</p>
<p>e.-1</p>
<ul>
<li><p>For what value c will 2x^2-3x+c=0 have one and only one real root ?
a.4
b.1
c.-4
d.9/8
e.0</p></li>
<li><p>If log10(x+4) + log10(x-4) =1 then x=
a.-2.45
b.5.1
c.5
d.2.45
e.1.25</p></li>
<li><p>Which term in the expansion of (1/x + x^2) contains no power of x?
a.no term
b.6th
c.5th
d.3rd
e.4th</p></li>
<li><p>The first and last terms of a perfect square trinomial are 36x^2 and (4y^2)(z^2).Which of the following could be the middle term?
a.24xyz
b.2xyz
c.12x^2y^2z^2
d.12xyz
e.24x^2y^2z^2</p></li>
<li><p>The measure of the positive angle formed by the nonnegative ray of the x-axis and the line defined by y=-root*3x is
a.30
b.120
c.90
d.45
e.150</p></li>
</ul>
<p>*Which of the following is the degree measure of an angle is standard position and coterminal with an angle of -8?
i 352
ii 8
iii -368
a.I
b.I and III
c.II
d.II and III
e.I,II,III</p>
<ul>
<li><p>The minimum value of f(x) =x^2+x 4 is
a.2
b.-2
c.4
d.15/4
e.17/4</p></li>
<li><p>If cosx = -.9287, then cos(x+180(degrees))=
a.-.9287
b. .9287
c. .0713
d. -. 0713</p>
<h2>e. -1.8574</h2>
<p>Thats about it :)
Sorry for the extremely long thread apparently i dont know MOST of the math topics and my exam is really soon so i hope u guys really help me !
Thanks in advance
sorry again</p></li>
</ul>