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
timama [110]
3 years ago
15

Solve algebraically. 3x + y =3 Y = 2x - 7

Mathematics
2 answers:
Annette [7]3 years ago
4 0
<span>3x + y =3 
Y = 2x - 7

substitute </span>Y = 2x - 7 into  3x + y =3 
3x + y =3 
3x +2x - 7 =3 
5x = 10
x = 2

Y = 2x - 7 = 2(2) - 7 = -3

answer
(2, -3)


svp [43]3 years ago
3 0
The answer is indeed (2,-3)
You might be interested in
Transfer transfer the system of equations by forming a matrix equation.
Anika [276]

Answer:

Step-by-step explanation:

\begin{bmatrix}2 & -3\\ 1 & 2\end{bmatrix}^{-1}\times \begin{bmatrix}2 & -3\\ 1 & 2\end{bmatrix}\times \begin{bmatrix}x\\y \end{bmatrix}=\frac{1}{7} \begin{bmatrix}2  & 3 \\ -1 & 2\end{bmatrix}\times \begin{bmatrix}19\\ -1\end{bmatrix}  

Since, \begin{bmatrix}2 & -3\\ 1 & 2\end{bmatrix}^{-1}=\frac{1}{7}\begin{bmatrix}2 & 3\\ -1 & 2\end{bmatrix}

And A^{-1}A=I

\begin{bmatrix}x\\y \end{bmatrix}=\frac{1}{7}\begin{bmatrix}2 & 3\\ -1 & 2\end{bmatrix}\times \begin{bmatrix}19\\-1 \end{bmatrix}

\begin{bmatrix}x\\y \end{bmatrix}=\frac{1}{7}\begin{bmatrix}35\\ -21\end{bmatrix}

\begin{bmatrix}x\\y \end{bmatrix}=\begin{bmatrix}5\\ -3\end{bmatrix}                

Therefore, x = 5 and y = -3 will be the value of variables.

3 0
3 years ago
An airplane descended 4,000 feet before landing. The integer that represents how many feet the airplane was above the ground bef
NeTakaya

Answer:

Since, an airplane descended 4,000 feet before landing.

Now, we have to determine the integer which represents the number of feet, the airplane was above the ground before its descent.

Before the descent, airplane was at the height of 4,000 feet.

And the distance above the ground is represented by the positive integers and distance below the ground is represented by the negative integers.

Since, 4,000 feet is the distance of airplane above the ground.

So, the airplane was +4,000 feet above the ground before its descent.

8 0
4 years ago
(b) Rewrite the percentage in the sentence below as a decimal.
Arturiano [62]
40% = 0.4
Explication:
40 / 100 = 0.4

5 0
3 years ago
A number minus 12 is 20​
Ivan

Answer:

32

Step-by-step explanation:

Adding 12 to 20 will give you the answer. To further describe it, if we make x the unknown number, the equation is:

x-12=20

then you can isolate x to get the unknown number

x=20+12=32

3 0
4 years ago
What is the lenght of the shown below
goblinko [34]

Answer:

There is no picture shown below.

Step-by-step explanation:

Consider making another question, and actually putting the picture!

8 0
3 years ago
Other questions:
  • The expression x4 + 6x3 – 11x2 – 60x + 100 is equivalent to (x – 2)(x – 2)(x + 5)(x + 5). At what points does the graph of the f
    6·2 answers
  • How do I solve multi step equations
    5·1 answer
  • how do you solve an equation with a whole number and fraction with a variable if the equation is 24+n/4=10
    13·1 answer
  • What is the area, in square meters, of the shaded part of the rectangle shown below?
    14·1 answer
  • WILL GIVE 50+ POINTS!<br> Which is the graph of the linear equation 3x – 4y = –12?
    11·2 answers
  • During a 12-hour period, the temperature rose by 48*f. The temperature rose the same number of degrees each hour. How many degre
    14·1 answer
  • Evaluate the expression 6³
    12·1 answer
  • Select the correct answer.
    10·1 answer
  • I need help on this question
    9·2 answers
  • If a 28 inch stained glass window costs $1.25 per square inch, how much will the window cost?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!