1. What are electromagnetic (EM) waves?

A school has a policy that limits class sizes to 30 students. If there are currently 18 students enrolled, what is the maximum number of additional students that can enroll without exceeding the limit?

Demuestra que en una ecuación cuadrática de la formá \( a x^{2}+b x+c=0 \) con \( b^{2}-4 a c>0 \), el producto de los dos posibles valores de \( x \) es \( \frac{c}{a} \).

Watch the video and then solve the problem given below. Click here to watch the video. If you toss two coins, what is the expected number of tails?

You are dealt one card from a standard 52 -card deck. Find the probability of being dealt a picture card. The probability of being dealt a picture card is (Type an integer or a simplified fraction.)

\( \overline{S V} \) is the midsegment of the trapezoid \( Q R T U \). If \( T U=p, S V=-2 p+20 \), and \( Q R=3 p-8 \), what is the value of \( p ? \)