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aksik [14]
3 years ago
15

Solve the system of equations

Mathematics
2 answers:
Phoenix [80]3 years ago
6 0
The correct answer is letter B, (6,-1).

When you substitute this ordered pair on the equations, you would found out is the correct one.
meriva3 years ago
3 0
SOLVING:

\begin{cases}&2x+6y=6\quad\Longrightarrow\ Equation\ 1\\&3x-2y=20\quad\Longrightarrow\ Equation\ 2\end{cases}\\ \\ \\\textbf{Solve\ "x"\ in\ the\ second\ equation\ and\ replace\ in\ the\ first}\\\textbf{equation:}\\ \\\boxed{x=\dfrac{20+2y}{3}}\\ \\ \\2\left( \dfrac{20+2y}{3}\right)+6y=6\\ \\ \\2(20+2y)+3(6y)=3(6)\\ \\40+4y+18y=18\\ \\22y+40=18\\ \\22y=18-40\\ \\22y=-22\\ \\y= \dfrac{-22}{22}\\ \\y=-1\quad\to\boxed{\spadesuit\ Answer\ \spadesuit}


\textbf{Replace\ "y"\ in\ the\ second\ equation:}\\ \\3x-2(-1)=20\\ \\3x+2=20\\ \\3x=20-2\\ \\3x=18\\ \\x= \dfrac{18}{3}\\ \\x=6\quad\to\boxed{\spadesuit\ Answer\ \spadesuit}\\ \\ \\\mathbb{ANSWERS:}\\ \\(x,y)\Longrightarrow\boxed{\boxed{B\ (6,\ -1)\ \checkmark}}\\ \\ \\\textbf{HOPE\ THIS\ HELPS...!!}
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X − (y − y)= for x = 3 and y = 6
dusya [7]

Answer:

3

Step-by-step explanation:

x − (y − y)

3-(6-6)

3-0

3

3 0
3 years ago
Read 2 more answers
Find the measure of the marked acute angle to the nearest degree
Setler79 [48]
Answer: 62°
Solution:
tan x =34/18
x=tan^-1 (34/18)
x=62°
5 0
3 years ago
If 5a=-4b+5 and 3a=-2b+3, what is 6b?
Misha Larkins [42]
There are two equations and two variables. You can solve for each variable using either the elimination method or the substitution method. Here, I believe the elimination method would be best:
5a = -4b + 5
3a = -2b + 3
You can multiply the second equation by two, so the 4b and -4b in both equations will cancel each other out when you add them. So:
5a = -4b +5
6a = 4b +6
Add both equations together.
11a = 11
a = 1
Plug in the a value into any of the previous equations:
5(1) = -4b + 5
-4b = 0
b = 0
So, since we know that b = 0, 6b is also 0.
6 0
3 years ago
How do I solve this equation?
Gnom [1K]

2x(4-x)^{-1/2}-3(4-x)^{1/2}=(4-x)^{-1/2}\bigg(2x-3(4-x)\bigg)

We effectively rewrite the equation as

\dfrac{5x-12}{(4-x)^{1/2}}=0

In order for the LHS to be defined, we need to restrict 4-x>0, or x. Now, the LHS will vanish when the numerator is 0, which happens for

5x-12=0\implies5x=12\implies x=\dfrac{12}5

This value is indeed smaller than 4, so the solution is x=\dfrac{12}5.

8 0
3 years ago
I really need help on this one. Help please
ddd [48]
COULD YOU BE Y GIRLFRIEND IF I ANSWER?

6 0
3 years ago
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