Since the 1970s, what changes have taken place to the role of committee chairpersons?

Find dy/dx. Assume a, b, c are constants. $x ^ { 2 } + x y - y ^ { 3 } = x y ^ { 2 }$

Solve each equation or inequality. Round to four decimal places if necessary.

$$6 ^ { n - 1} \leq 11 ^ { n }$$

Tell whether the given ordered pairs satisfy a linear function. {(1, 1), (2, 4), (3, 9), (4, 16)}

Calculate the positive eigenvalue and a corresponding positive eigenvector of the Leslie matrix L.

$$L = \left[ \begin{array} { l l } { 0 } & { 2 } \\ { 0.5 } & { 0 } \end{array} \right]$$

Let $V$ and $W$ be subspaces of $R^n$ such that for any $v$ in $V$ and $w$ in $W$, the vectors $v$ and $w$ are orthogonal. Prove that $P_V+P_W$ is an orthogonal projection matrix. Describe the subspace $Z$ of $R^n$ such that $P_Z=P_V+P_W$.

How many members of each party do you think would be on a ten-member Senate standing committee if the Senate were composed of 70 Democrats and 30 Republicans?

Describe the interval(s) on which the function is continuous. f(x) = 3 - √x

Benzene has the chemical formula ______.

Use a scientific or graphing calculator to evaluate each of the following to the nearest tenth.

$$\sin ^ { - 1 } \frac { 1 } { 2 } =$$

$$\cos ^ { - 1 } \frac { 1 } { 4 } =$$

$$\tan ^ { - 1 } 0.6 =$$

Solve each system by the addition method.

$$\left\{ \begin{array} { l } { x ^ { 2 } + y ^ { 2 } = 13 } \\ { x ^ { 2 } - y ^ { 2 } = 5 } \end{array} \right.$$

Solve the equation. Check your solution. 2(m - 4) = m + 2

Find an equation of the tangent plane to the given surface at the specified point. z=3y^2-2x^2+x, (2, -1, -3)

For each pair of terms, explain the relationship between the terms. homospory and heterospory