5

0.60.50.4 € 0.22...

Question

0.60.50.4 € 0.22

0.6 0.5 0.4 € 0.2 2



Answers

Divide. $$ 0.6 \div 0.2 $$

We want to find the university's two by two matrix. Using a calculator. I'm going to use the decimals. Matrix calculators. We first type are click on the new matrix. Other calculators will be somewhat similar. We have to define the matrix And so we put in the elements negative .5 0.5 three and two. And then you can hit enter so that it is defined. And then you can type Matrix A. And then hit the inverse key. And we see that as a negative .8.21 .2.2. Mhm.

What is negative? 0.2 times Negatives. You're a 0.7. The thing to remember here is that when you multiply a negative by a negative, you get a positive. So we have a negative times negative, so we're going to get positive 0.14

I guess this problem was gonna solve for M 0.2 minus 0.5 is equal to 0.1 M plus 0.7 personally to deal with problems like this is and say I'll have one decimal places just gonna multiply the entire equation. About 10. That's just gonna give us two. M minus pi equals M plus seven. Then I can subtract them from both signs and and five about signs. That's just gonna give us that em is equal to 12. Okay, thank you very much.

We need to solve the following by elimination. So we're first going to multiply everything by 10 to make this whole numbers. So we have two X minus three. Y is equal to three and then four X plus six Y is equal to negative two. We're gonna multiply our top equation by two. So we get four X minus six. Y is equal to six are Wise cancel out and we're left with eight X is equal to four. So we divide by eight and we get X is equal to one half. So we're going to take that number and plug it back into one of the original equations. So 0.4 times X which is one half plus 0.6 Y is equal to negative 0.2 0.4 times one half is 0.2 plus 0.6 Y is equal to negative 0.2. We're going to subtract .2 from both sides, so negative .2 0.2 becomes negative point. Force we have 0.6 Y is equal to negative 0.4. We're gonna divide both sides by .6. Here we get why is equal to negative two thirds. So our solution to our system is one half And -2/3. You should take those two numbers, plug it back into the original equations to make sure it works and it does so this system is consistent and independent.


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