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frez [133]
3 years ago
11

How to solve 3 variable systems

Mathematics
1 answer:
AVprozaik [17]3 years ago
4 0
<span>Pick two pairs: 4x - 3y + z = - 10. 2x + y + 3z = 0. ... Eliminate the same variable from each system: 4x - 3y + z = - 10. 2x + y + 3z = 0. ... Solve the system of the two new equations: -5y - 5z = - 10. 5y - 7z = 34. ... Substitute into one of the original equations: - x + 2y - 5z = 17. ... <span>Check: Does 2(1) + 4 + 3(- 2) = 0 ? Yes.</span></span>
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Write the slope-intercept form of the equation of each line​
qwelly [4]

Answer:

y = 2x - 5

Step-by-step explanation:

Slope = 2

y-intercept = - 5

3 0
2 years ago
Geometry math question no Guessing and Please show work
sergiy2304 [10]

the answer is D.

I dont know how to add work for a question like this, however, I know how I'd show work....

Draw a graph and stick a point in the IV quadrant and label it "original". Then next to it, draw another graph and stick a point in the III quadrant and label it "reflection"


TIP: if you do that, make sure the points are in the same location in each quadrant

6 0
3 years ago
Read 2 more answers
on a large college campus, 84% of the students report drinking alcohol within the past month, 33% report using some type of toba
Natasha_Volkova [10]

Answer:  0.31

Step-by-step explanation:

Let A denotes the event that the students report drinking alcohol and B denotes the students report using some type of tobacco product .

Given : P(A) =0.84   ; P(B)=0.33    and        P(A∪B)=0.86

We know that P(A\cap B)=P(A)+P(B)-P(A\cup B)

Then, the probability that the student both drunk alcohol and used tobacco in the past month is given by :-

 P(A\cap B)=0.84+0.33-0.86=0.31

Hence, the probability that the student both drunk alcohol and used tobacco in the past month = 0.31

5 0
3 years ago
Use the chart to multiply the binomial by the trinomial.
sukhopar [10]
Answer:  " -2y³ + 3y²<span> + 27y " . 
_______________________________________________________
Refer to the completed chart below (image attached).</span>
_______________________________________________________
Using the completed chart below (image attached), we can write out the terms:
__________________________________________________
  y³ − 3y³ + 9y² + 3y² − 9y² + 27y ;

Then, we can combine the "like terms" ;
__________________________________________
y³ − 3y³  = -2y³ ;

+9y² + 3y² − 9y² =  + 3y² ;
___________________________________________________________
to get:  -2y³ + 3y² ;   and bring down the "+27y" ;
___________________________________________________________
    Answer:  " -2y³ + 3y²<span> + 27y " .   </span>Refer to chart below (image attached).
___________________________________________________________

5 0
3 years ago
Read 2 more answers
Need help !!!Divide 5a^2 + 6a - 9 into 25a^4 + 19a^2 - a - 78.
lana [24]
Hello,

Maybe i have not understood "into".

\dfrac{25a^4+19a^2-a-78}{5a^2+6a-9} =5a^2-6a+20+ \dfrac{-175a+102}{5a^2+6a-9}
6 0
3 years ago
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