1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
OverLord2011 [107]
2 years ago
8

Can you please help me with this problem?

Mathematics
1 answer:
Hoochie [10]2 years ago
6 0
Here you have to find which each variable is, for this you start of picking one equation,

x + 2y + 6z = 4
-3x + 2y - 2 = -4
4x + 2z = 16

depending the equation you pick you multiply that by a certain number that will give you the opposite of one of the other equations,
-1(x + 2y + 6z = 4)
= -x -2y - 6z = -4

With this you add or subtract it with the equation that has the same number or variable, or both,
In this case it will be the equation,
-3x + 2y + 6z = 4
You can use this one or the third equation since both have a positive 2y which will cancel with -2y from the new equation,
-x - 2y - 6z = -4
-3x + 2y -z = -4

= -4x -7z = -8
Now you since you just eliminated the variable (y) you now have 2 variables, and the last equation has only 2 variables, meaning now you find the answer to those to equations,

-4x -7z = -8
4x + 2z = 16

= -5z = 8
Now leave the variable by itself,
z = 8/5
Now you found the variable (z), with this just substitute on one of the equations we used to find (z) so you can find (x), after that substitute those answered to on of the original equations so you can find (y)




You might be interested in
PLEASE HELP URGENT!!!! Can someone plss help me with these!!
lana66690 [7]

Answer:

ok who are 38 no butplease

4 0
2 years ago
Clard graphed her reading fluenoy
Digiron [165]

Answer:

100

Step-by-step explanation:

To find mean/average you add all of them together, then divide by however number there are.

So

99+88+97+107+100+109 = 600/6 = 100

3 0
2 years ago
How would you "remove the discontinuity" of f ? In other words, how would you define
balu736 [363]
There is a hole at x=4 because the top factors to (x-4)(x+3)
in the end we get

f(x)=(x-4)(x+3)/(x-4)
the (x-4) cancels out and we get
f(x)=x+3
so baiscally f(x) is y=x+3 but with a hole at (4,7)


one way is to make a piecewise function defined as(x^2-x-12)/(x-4) for all x≠4 and defined as 7 for x=4

or, to just do f(x)=x+3
5 0
3 years ago
Can someone plz help me with this one problem plz!!!
irina1246 [14]

Answer:

oxfords cornmarket is famous for shopping ,sure, but some locals perfer the shops in jericho.

Step-by-step explanation:

5 0
2 years ago
Benjamin’s and David’s ages add up to 36 years. The sum of twice their respective ages also add up to 72 years. Find their ages
nydimaria [60]
Answer:Benjamin’s age = 30 and David’s age = 6

Explanation:

Let x be the age of Benjamin
Let y be the age of David

x + y = 36

And 2x + 2y = 72

If we plug 30 for x and 6 for y we get:

30 + 6 = 36
36 = 36

2(30) + 2(6) = 72
60 + 12 = 72
72 = 72

=

5 0
3 years ago
Read 2 more answers
Other questions:
  • Define a variable. Then write and solve an equation for each situation.
    15·2 answers
  • Drag and drop descriptions in the box that correctly classifies the angle pairs you may use multiple responses in the boxes?
    9·1 answer
  • A girl starts to walk to her school, which is 20 miles away, at 6:50 and at a rate of 3 miles per hour. After a while, her dad p
    8·2 answers
  • IM BEGGING PLEASE SOMEONE HELP
    5·1 answer
  • PLS ANSWER QUICK!!!!!
    14·2 answers
  • Using mixed numbers, write a problem in which an estimate is enough to solve the problem.​
    5·1 answer
  • Which expressions are polynomials?
    9·1 answer
  • 1 + 3 - (8 * 334 * 123) = x<br><br> x = ?
    7·1 answer
  • Hassan is cooking some rice the recipe says he needs 450 grams of rice for 6 people.how many kilograms of rice would he need for
    8·1 answer
  • The fourth graders are helping raise money for the local animal shelter they hoped to raise 1,000. so far they have made 465 in
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!