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
Elan Coil [88]
3 years ago
12

2) Solve the System of Equations using Substitution. -3x+2y=12 x=2y-8

Mathematics
2 answers:
Nady [450]3 years ago
6 0

Answer:

x=-2. y=3

Step-by-step explanation:

So, it tells us that x=2y-8.

Now substitute x into the equation.

-3(2y-8)+2y=12

- 6y+24+2y=12

-4y+24=12

-4y=-12

y=-12/-4

y=3

Now that we know that y=3 substitute y into the second equation equation.

x=2(3)-8

x=6-8

x=-2

So in the end x=-2 and y=3

Hope this helps

Ne4ueva [31]3 years ago
5 0

Answer:

y=3, and x= -2

Step-by-step explanation:

-3x= -2y+12

x=2y-8

3x=2y-12

3x=6y-24

2y-12=6y-24

-4y=-12

y=3

x= -2

You might be interested in
Please help!! (Number 73)
Rasek [7]
So hmm notice the picture below

one is 7x5x1.75 the volume of a rectangular prism is V = length * width * height

so 7*5*1.75 gives us 61.25 ft³

the second one, is larger by some width and length we dunno, but we know that it required that 61.25 plus an extra 17.5 to fill it up, so its volume is 61.25 + 17.5 or 78.75

the height is the same... so \bf V=l\cdot w\cdot h\qquad 
\begin{cases}
l=length\\
w=width\\
h=height\\ --------\\
h=1.75\\
V=78.75
\end{cases}\implies 78.75=lw\cdot 1.75
\\\\\\
\cfrac{78.75}{1.75}=lw\implies 45=lw

so.. if you factor 45, to two factors, one will be the length, the other the width

3 0
3 years ago
Please anyone help me on this...​
OLga [1]

Answer:

The 2nd choice ( the one that starts with square root of 5 )

Step-by-step explanation:

I turned all of the choices into decimals so they had the same playing field then I put them from least to greatest and I got square root of five, 5/2, 2.717171717171, 2 and 3/4.

7 0
3 years ago
Read 2 more answers
Please complete the attachment attached below
tatiyna

Answer:

Step-by-step explanation:

6

a) 70

This is because 70 is mentioned 3 times

b)70

It’s the middle number

c)28

85-57=28

7 0
3 years ago
Read 2 more answers
How do you solve 90% of 20?
Marizza181 [45]
All you would do is multiply .9 by 20
.9*20=18

90% of 20 is 18
3 0
3 years ago
Find x, the unknown side.<br><br> A) 4.6<br> C) 4.8<br> B) 5.4<br> D)3.5
MrMuchimi
Go ahead to do the trick
3 0
2 years ago
Read 2 more answers
Other questions:
  • Please help me :( thank you :( very grateful if you answer :0 pic down below
    6·1 answer
  • F(x) = x2 + 10<br> What is the average rate of chan<br> hange of f over the interval [-2, -1]?
    5·1 answer
  • 0.9 as a percentage
    13·1 answer
  • For f (x) - 4x +1 and g(x) = ? -5, find (fºg)(4).
    5·1 answer
  • DUE IN 5 MINS HELPPPPP
    5·2 answers
  • help im famous biologist .................................................................. please daddy
    5·2 answers
  • Solve for c<br> -38+-75c≥37
    14·1 answer
  • (7/2 - 1/3) x (-2) ^2 + 1/2
    6·1 answer
  • NEED HELP FAST PLEASE
    13·1 answer
  • On a piece of paper, use a protractor to construct a triangle with angle measures of 30° and 120°. Which statements about this t
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!