A dragonfly can beat its wings 30 times per second. Write an equation in slope-intercept form that shows the relationship between flying time in seconds and the number of times the dragonfly beats its wings. _

Julio made $9.00 per hour working at a stable. How many hours did he work in a week if his weekly pay before deductions was$243? Define a variable and write an equation. Solve the equation and check your solution.

Why didn’t the conversion by many European nations to the euro at the start of 2002 eliminate all trade problems between nations in the euro area?

What is the significance of the triple point in a phase diagram?

En los Estados Unidos el ____ es un sandwich y algo de beber. (Down)

Why is difference a key word in explaining tides?

Draw and label diagrams to help solve the related-rates problems. A triangle has two constant sides of length 3 ft and 5 ft. The angle between these two sides is increasing at a rate of 0.1 rad/sec. Find the rate at which the area of the triangle is changing when the angle between the two sides is π/6.

Create a structure array that contains the following information elds concerning the road bridges in a town: bridge location, maximum load (tons), year built, year due for maintenance. Then enter the following data into the array:

$$\begin{matrix} \text{Location} & \text{Max. load} & \text{Year built} & \text{Due for maintenance}\\ \text{Smith St.} & \text{80} & \text{1928} & \text{2011}\\ \text{Hope Ave.} & \text{90} & \text{1950} & \text{2013}\\ \text{Clark St.} & \text{85} & \text{1933} & \text{2012}\\ \text{North Rd.} & \text{100} & \text{1960} & \text{2012}\\ \end{matrix}$$

Solve the inequality. Graph the solution on a number line.

$$- x + 7 \leq 4 - 2 x$$

What quadrilateral always has 4 congruent angles and opposite sides that are congruent and parallel?

Find the limit. lim_(x→4) [√x-3-1 / (x-4)]

Determine whether the equation $Ax=b$ is consistent for every $b$ in $R^m$.

$$\begin{equation*}\begin{bmatrix}1&&0\\-2&&1\end{bmatrix} \end{equation*}$$

Three point charges, which initially are infinitely far apart, are placed at the corners of an equilateral triangle with sides d. Two of the point charges are identical and have charge q. If zero net work is required to place the three charges at the corners of the triangle, what must the value of the third charge be?

Find the slope of the tangent line to the given polar curve at the point specified by the value of theta. r=cos 2 theta, theta=pi/4