What does the "$E$" mean, such as in the number $9.0122222900391E-5$ ?

Find the geometric mean of the two numbers. 14 and 20.

In the proportion a:b=b:c, b is called the mean proportional or the geometric mean between a and c where a, b, and c are greater than 0. If b is a positive integer, what must be true about the product, ac?

A. Two identical conducting spheres are placed with their centers 0.30 m apart. One is given a charge of $+12 \times 10^{-9} \mathrm{C}$. The other is given a charge of $-18 \times 10^{-9} \mathrm{C}$. Find the electric force between them. Given: Unknown:

What does the word empirical in empirical formula mean?

Element $\mathrm{C}$ is metallic and has 1 valence electron.

Element $\mathrm{D}$ is non-metallic and has 6 valence electrons.

(a) What kind of compound will form between $C$ and D? How do you know?

(b) Using Lewis symbols, show how $\mathrm{C}$ and $\mathrm{D}$ will combine.

(c) Write a chemical formula for the compound that will form.

(d) What type of chemical formula did you write in (c)?

Write a polynomial function f of least degree that has rational coefficients, a leading coefficient of 1 , and the given zeros: $-2,-1,2,3, \sqrt{11}$

Write given subject complement and identify it as a predicate adjective or a predicate nominative.

Example: Swing is big-band jazz.

Answer: jazz, predicate nominative

Are you an alligator?

Use the Change-of-Base Formula and a calculator to evaluate the logarithm. Round the answer to three decimal places.

log$_\pi \sqrt{2}$

In the given exercise, sketch and describe each locus in the plane. Given that congruent circles $O$ and $P$ have radii of length 4 in. and that the line of centers has length 6 in., find the locus of points that are $1 \mathrm{in}$. from each circle.

A milling operation was used to remove a portion of a solid bar of square cross section. Knowing that $a=1.2 \mathrm{~in}$, $d=0.8 \mathrm{~in}$, and $\sigma_{all}=8\mathrm{~ksi}$, determine the magnitude P of the largest forces that can be safely applied at the centers of the ends of the bar.

Divide: $31_{\text { seven }} \sqrt{2426_{\text { seven }}}$.

What does it mean to have a 100 % doller decrease?.

Show that the magnetic field strength between the plates a distance $r$ from the axis through the centers of both plates is given by $B=\left(1.9 \times 10^{-3} \mathrm{~T} / \mathrm{m}\right) r$.