Another way to say this is: in order to graph (-x)^0.5 for negative-valued x, there's no problem since the result is a positive real number : i.e. you can do it on regular 2-D graph paper. But for positive-valued x, now you need to show the result on the imaginary portion of the complex plane. So,...

Heaven,
Zygomycetes are a certain family of fungi. Like many other organisms, within the family there are species with all sorts of numbers of chromosomes! You'd have to go in and look up "ploidy" for a few species specifically, to get an idea of what's typical. I suspect, the purpose...

Courtney,
There are just three types of systems of equations:
1) inconsistent = no solutions : such as (for two equations in two variables) two parallel but not overlapping lines
2) dependent = infinite number of solutions : such as (for two equations in two variables) two lines that...

I'd have to differ on the answer here. Richard P., the adiabatic lapse rate arises from a volume of gas expanding against a gradually decreasing surround pressure. Thus, such a gas packet does work on the surroundings as it rises, and experiences a loss of sensible heat as a result. Here, in spite...

April, I'll point you in the right direction on this one, since it's your third question today (that's close to spamming!)
In chemistry, you must be agile at converting among several units of measure for substances. The one that's convenient to measure directly in the lab is mass (frequently...

April,
You're posting an awful lot of questions today. Big test review?
Charles' Law indicates that the volume a gas takes up is proportional to the temperature ****in degrees Kelvin****.
Therefore, calculate what your initial and final temperatures are in degrees K (add 273.15 to the...

Actually Kamesha,
Matt above is right, if you think of the Earth as flat. But, especially up around the (geographical) poles of the Earth, the situation gets iffy. For example, if you both started just 5 miles south of the North Pole, you'll end up only 5 miles apart, because you'll end up at...

No Xavier, this is not the problem you had to solve. For several reasons. First of all, as stated you're given the decrease (negative change) in value (not cost, he's not still buying it!). Then, usually you'll have to solve a typical expression for value vs. time. But it's not a quadratic, it's...

Megan,
Not so hard! First, call f(x) something more convenient, such as "y". That gives you:
y=(x/2)-4
This takes you from an independent variable (x) to a dependent one (y). Note the standardized form of this equation: y is alone on one side, and x is manipulated on the other...

By and large, the average warming is most pronounced around the geographical polar regions, and almost negligible at the equator.
However (a big however!), the size of the average temperature changes doesn't tell you directly everything; a 0.1oC increase at the equator will put far more water...

You might as well ask, where were all the arguments about Big Bang theory, before the Big Bang theory had been postulated?
Space has some amazing properties -- particles pop into and out of existence (the more massive they are, the shorter time they can exist before they vanish again); light...

This question tries to trick you, perhaps, with the order of the instructions. You don't need to balance the equation in order to calculate the first answer (moles of Al): just divide 18.4g by the atomic weight of the element Al (on your periodic table). THEN you do need to balance the equation,...

Unclear question language Kaitlyn. The amount of increase could have either been 10% *relative to the size of the group of students already working*, i.e. from 70% to 77% absolute (where absolute means of all the population of students), or 10% absolute, i.e. an additional 10% of the total student...

Already solved, same problem, a different post. Renae, you must have the same textbook and curriculum pacing!

Dear Xochitl,
This is a typical heat transfer problem. The metal cools down from its initial temperature to the final temperature; the water heats up from its initial temperature to the final temperature. For each of these temperature changes in a material, the heat gain is Q = mass * temperature_change...

Man,
Wyzant isn't for doing all your problem sets! I'll help you with the first question, a little.
Both enthalpy and entropy are expressible either in terms of amount per unit, or amount in total. When you look up values for either property, they are listed in terms of amount per mole of...

Madison,
Since you have asked a lot of questions at once on Wyzant, I won't take you all the way through to an answer, but I'll give you some hints that should help you.
Is Springsteen older than 16, but younger than 115? Then he must have been born in a year starting with what 2 digits...

Destiny,
You should check your questions postings, this one seems to have lost most of itself. There's no figure, no given side or sides, and no data identified as perimeter or area (the usual things in such problems).
Please redescribe completely in words, perhaps?

Porsha, I'm not quite sure -- do you mean g(x) = sqrt(x-8) + 2 ?
If so, you shouldn't be having problems with this kind of problem.
Domain means that you don't perform any illegal operations involving your x. So for h(x), x=0 would be forbidden (can't divide by...

Sorry, Michael J., $0.11 * 0.113 = 1.34 cents, not dollars.
Colsten, if you're trying to match the energy drawn with the heating delivered, you may want to read the appliance label (usually inside the door-close area). The actual klystron power (microwave) output is somewhat less...