use-a-calculator-to-solve-each-system-beginaligned3-x-04-y9-z-1668-03-x5-y-8-z-0972-5-x-4-y-8-z-18en

Question

Use a calculator to solve each system.

$$\begin{aligned}3 x-0.4 y+9 z &=1.668 \0.3 x+5 y-8 z &=-0.972 \5 x-4 y-8 z &=1.8\end{aligned}$$

Jake Zanazzi · Accepted Answer

reacts gone flying plus a Z equals five nine x minus three y plus three g equals 15 are you 12 x? Let&#x27;s for four. Is the people&#x27;s negative 20. So, again, these equations are all some sort of multiple of each other. This first equation, times three equals the second equation. This first equation has four. It was the stared equation. That means that they&#x27;re gonna be infinitely many solutions. Um, and the final one, These solutions. Let&#x27;s just plug in the zero fractions here for why he is getting all five. If it&#x27;s yours, your five will solve all of these solutions, right? Because all you&#x27;re doing to get from this equation to this equation is multiplying every term by three. It&#x27;s the same equation and whatever x, y and Z solves his first equation, therefore has to solve the second question and the third equation. So there

Ankit Gupta · Answer

So we have been given a set off equations as X plus three y plus five is equals to 20. And why minus was there is a close to minus 16. Three ex miners to why bless 90? Is it close to 36? So now we will name this the questions as one do on three. So first we will my reply minus three in question one Onda id with the question Todd. So therefore, we will get minus three X minus nine way minus 15 is that is equals to minus 60 three x minus. Do I plus lines owed is equals to 36. So minus 11. Why minus cigs There is it closed toe whiteness 24 and we will name the cell question for so multiply 11 in a question, too, and ad with the question for So therefore we&#x27;ll get 11. Why, minus 44 said is because toe minus 1 76 and here we have minus 11. Why minus six in is equals to minus during default. So therefore minus 50 zer is equals to minus 200 divided by four minus four on board that states so their physicals to so you divide by 50 minus 50 on board that say so we will have their physicals to four. Now we will substitute any question toe So any question to be f y minus for their physicals. Tu minus 16. So therefore why minus four multiplied with four is a close to minus 60. So therefore, why will be zero? No, we will substitute in equation one. Any question one is X plus three y plus five. There is equals to 20 x is unknown. Three month replied with zero plus five multiplied by four is opposed to 20 so x plus Wendy is equal to 20. So therefore X is also zero. So therefore you off x Goma Y, Toma said, is equal to zero coma, zero comma four

Jake Zanazzi · Answer

that&#x27;s your area of the system. Abrasions 0.1 acts plus 0.0 e y minus Point here for Z equals three five x for why minus two Z equals 1 50 for three acts plus 0.24 y minus 0.1 to z equals not so you could see is that these equations are all fact multiples of each other as well. She will play his first equation by 50. You&#x27;re going to get the second equation. You multiply this first equation by three, you&#x27;re gonna get the third equation. Therefore, we know that they&#x27;re infinitely many solutions. That&#x27;s all. For one, the solution book 1,000,000,000 0 for y and Z, you get five acts equals 1 50 therefore X is gonna equal 30 30 0 No. 30 00 is a valid solution that you comply got into this first and third equation and you&#x27;ll get ah, that it is valid solution as well

Amrita Bhasin · Answer

Okay. Multiply the 1st 2nd and third equation by 10 to get rid of the decimals and then multiply the first equation by negative five. After getting rid of the decimals, you should end up with us, do the same thing to add thes second equation. And again, remember, we&#x27;ve gotten rid of the decimals left with nine y minus 11. See equal negative. 20. And I&#x27;m gonna this is gonna consider is going to consider as our new fourth equation. Okay, Now multiply the first equation by negative seven and add it to the third equation. This is the third equation. Okay, Now multiply the new fourth equation. Remember, that was the one I wrote. And Red, and we&#x27;re gonna be multiplying that, given the fact that Z equals 10 we&#x27;re sorry we&#x27;re gonna be solving for Z. And we know that Z equals 10 because we ended up with negative 10 over three z equals negative 100 over three z equals 10. Now substitute back into the fourth equation, cause we know what z equals to get. Why should get that while so equals 10. Now, substrate back into the first equation to get acts and end up with axe equals ton. So the final ordered pair is gonna be 10 ton ton

Himanshu Kushwaha · Answer

have given four X minus three y plus there is equal to nine three x bless no y minus through there is equal before an X minus y plus three. There is equal to five letter. This is Chris and one. This is a present toe end. This is a prison, Terry. We multiply excavation to the by sitting V Get three X minus three. Why blessed nine? There is equal to 15. Now we do the embrace An equation one minus echr isn&#x27;t really vigor for X minus three x, it means extra leave I minus three ways means there and there. Minus 90. It means minus eight. There. Nine minus ripping is equal to minus six. Now we multiply Crescent three by V get two X minus two y plus six. There is equal to 10 now The air ECW isn&#x27;t through with prison. Three. We get three x plus two x five x and minus. True there, plus six. There it means plus, for there is equal to 14. Let&#x27;s sit. This crescent is for women to play fizz and four by five. We get five X minus 40. Jerre is equal to minus 30 V huge Disick vision and this vision and subject them vigor minus for before there is equal toe minus 44 From here Vigor, they reject world one. The place they&#x27;re equal to one in a prison for Viggen X is equal to eight minus six. Vitamins accident world. Go to the place. Accident worked upto injured is it will move on. Immigrants entity we get minus vie plus three is equal to five or why is +20? This is the sort of

Problem

Solve each problem by using a system of three equ…

Problem 42 Easy Difficulty

Use a calculator to solve each system.

$$\begin{aligned}3 x-0.4 y+9 z &=1.668 \\0.3 x+5 y-8 z &=-0.972 \\5 x-4 y-8 z &=1.8\end{aligned}$$

Answer

$x=\frac{9}{25}, \quad y=-\frac{3}{25}$ and $ z=\frac{3}{50}$

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$x=\frac{9}{25}, \quad y=-\frac{3}{25}$ and $ z=\frac{3}{50}$

Algebra for College Students

Lily A.

Ahyeon H.

Shubham P.

Kristen K.

Solving Absolute Value Inequalities

Rewrite Equations and Formulas - Example 2

Mark DugopolskiAlgebra for College Students

Lily A.

Ahyeon H.

Shubham P.

Kristen K.

Mark Dugopolski

Algebra for College Students