u mean 2 factors? prime numbers have 2 factors, 1 and itself like 23
the solution is: -9/2 < t ≤ 9/4
so the interval is: \((-\frac{9}{2},\:\frac{9}{4}]\)
it simplifies to \(10x^2-16x+51\)
Not that hard,
\(a=2-9a\)
\(=10a=2\)
\(=a=\frac{1}{5}\)
C
tysm!!! i know the answers but.. still edit: forgot to mention that #4 and #5 is wrong :( i won't tell you the answer just in case someone else answers but....
ok.
2/5 were blue so that means 3/5 is left. 1/2 of 3/5 = 3/10 so 3/10 of them are red which also means 3/10 of them were white. if x was the # of t-shirts, then
\(\frac{3}{10}x=9\)
\(3x=90\)
\(x=30\)
we can check this by doing 2/5 * 30 = 12 3/10 * 30 = 9 and white = 9 \(12+9+9=30\)
Oh ok, not that hard. \(3^{11}+5^7+1=255273\)
It's divisible by 3 because: \(2+5+5+2+7+3=24\)
and 24 is divisible by 3. So the answer is \(\boxed{3}.\)
i think he/she knows that, it's just for a joke purpose
\(x\le \frac{17}{3}\)
