Q:1. The additive inverse of a complex number z is a complex number a such that z + a = 0. What is the additive inverse of the complex number -2+4i ?2. The multiplicative inverse of a complex number z is a complex number m such that z ? m = 1. What is the multiplicative inverse of the complex number 1 - i ?I'm confused on how to do this and it would help if anybody could explain because i have a final over this tomorrow. THANKS

1. Additive inverse: To find the additive inverse find what the number added to will equal zero. So basically, set up an equation to finda." z+a=0 -2+4i+a=0 a=2-4i And so the additive inverse of -2+4i is 2-4i. (notice that it was simply the originally number multiplied by -1). 2. Multiplicative inverse: Basically the same thing only the two numbers are multiplied. z*m=1 (1-i)*m=1 m=1/(1-i) So that's the answer. I suppose you should probably simplify it though. 1/(1-i) * (1+i)/(1+i) [multiply by the conjugate of the denominator to get the complex number out of the denominator). (1+i)/(1-i?) (1+i)/(1--1) (1+i)/2 So that's you're answer.

Q:I‘ve heard that fuel additives can fix an EGR valve problem by cleaning it out. Is this true? If this is true, what would be the best fuel additives to use? Thanks for your help.

You should let a mechanic check that. DOnt play with things like that can be dangerouse.

Q:10) A manufacturer of a gas additive claims that it improves gas mileage. A random sample of 30 drivers tests this claim by determining their gas mileage for a full tank of gas that contains the additive (X1) and for a full tank of gas that does not contain the additive (X2). The sample mean difference D-Bar equals 2.24 miles (in favor of the additive) and the estimated standard error equals 3.0 miles.(a) Using t- test the null hypothesis at the .05 level of significance(b) Specify the p-value for this result. _____________

I can see two reasons for this. Extra rolling resistance of the oversize tire requires more power from the engine. In general, the more power an engine is making at any given time, the more fuel it must consume to make this power. The other reason I see for this is that the motorcycles that tend to use these tires are very high performance bikes. Close to street legal racing bikes. The engines generally make more power and generally operate at a higher RPM than a more tame street bike. High power, high RPM engines will consume more fuel.

Q:is it possible to get rid of food additives/preservatives by boiling food at high temperatures? I know this works for bacteria but not so sure about the former.

woman and some men that need to lose weight

Q:What are the additives needed for refined cooking oil?

Edible oil refining the necessary additives (different oils are not the same), generally acid, caustic soda, adsorption of activated clay, etc., after refining need to add antioxidants and so on.

Q:chemistry

The E-number system was originally used in the European Union in order to regulate the use of substances added to processed foods and drinks to colour them, flavour them, change their texture or enhance their keeping qualities. Additives were given a unique number and those which were approved for use were prefixed by 'E'. (1) Additives are numbered according to their main purpose as shown below: E100 - E199 (colours) E200 - E299 (preservatives) E300 - E399 (antioxidants, acidity regulators) E400 - E499 (thickeners, stabilizers, emulsifiers) E500 - E599 (acidity regulators, anti-caking agents) E600 - E699 (flavour enhancers) E900 - E999 (miscellaneous) E1000 - E1999 (additional chemicals)

Q:Is omega 3 an additive?

No, naturally occurring Fatty Acid. Predominantly found in fish and nuts.

Q:if so which ones best?

Fuel additives are good if you use E-10 fuel to prevent phase shift. There are several available for this purpose. The best known are Marine Sta-Bil, K100 and Star-Tron. Sta-Bil is probably the best known and most popular but I have experienced better results with Star-Tron and K100. They will prevent problems from ethanol fuel blends.

Q:I Wasn‘t There When Theyy Went Over The Additive Inverse I Dunno How To Do It. If You Can Help Me That Would Be Nice. :)These Numbers;;;;75-120-132-10000-91-----------------------------------------------------------------You Can Help Me Out Or give Me The Answer. I Rele Don‘t Care, Thanks:D

The Additive Inverse of a number is the number which, when added to the original, sums to 0. In essence, this is the same as placing a negative sign in front of a positive number or removing it from a negative: the inverse of 75 is -75, since 75 + -75 0 the inverse of -12 is 12, since -12 + 12 0 etc.

Q:Im doing a case study on additives and although i know that hyperactivity most probably is caused by certain additives, i cannot seem to find any scientific explanation as to why.

Additives for chemicals have different purposes. If you are studying effects of medicines, there are many class of additives. Most common are fillers - This compounds help in preparing dilution for tablating (or other forms of medicines) to help tableting exact dose. These are generally starch or salts. There are some additives being used to encapsulate the medicine. This help in delivering the medicine in the targeted zone. his compounds protect the medicine from being absorbed in region where it is not required - and in most cases it works on pH balance or presence of some specific ions. This compounds indirectly help in improving the efficiency of medicine. Some additives are made to increase the efficiency of the medicine. They are some times other medicine - combination preparations or some enzyme like compounds. It is known as synergistic effect. Increased efficiency - effect of medicines can be identified as hyper activity in body. Some additives are binders - that help tablating.