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
Lyrx [107]
3 years ago
15

2x-y=52x-2y=4

3D%204" id="TexFormula1" title="2 \times - y = 5 \\ 2 \times - 2y = 4" alt="2 \times - y = 5 \\ 2 \times - 2y = 4" align="absmiddle" class="latex-formula">
Mathematics
1 answer:
d1i1m1o1n [39]3 years ago
7 0
\left\{\begin{array}{ccc}2x-y=5\\2x-2y=4&|\cdot(-1)\end{array}\right\\\underline{-\left\{\begin{array}{ccc}2x-y=5\\-2x+2y=-4\end{array}\right}\ \ \ \ |add\ both\ sides\\.\ \ \ \ \ \ \ \ y=1\\\\substitute\ the\ value\ of\ y\ to\ first\ equation\\\\2x-1=5\ \ \ |+1\\2x=6\ \ \ |:2\\x=3\\\\\left\{\begin{array}{ccc}x=3\\y=1\end{array}\right
You might be interested in
The product of x and the sum of 6 and 8 times the square of x
Kamila [148]

Let's separate this problem into several parts:

1. The product of x

AND

2. The sum of 6 and 8

TIMES

3. The square of x

So translating this word problem into numbers, we have:

x TIMES (6+8) TIMES x²

so that is:

x * 14 * x²

which is:

14x^(2+1) = 14x³

8 0
3 years ago
Read 2 more answers
Tanelle is cutting out a paper banner as shown in the image. The entire piece of paper is 8 feet long and she is cutting a circl
Mrac [35]

Answer: 4.71

Step-by-step explanation:

4 0
2 years ago
[PLEASE HELP] Each of these statements describe a transformation of a graph of y = x, The which of the statements correctly desc
Sphinxa [80]

Answer:

B

Step-by-step explanation:

Adding the 7 to the input (x) will increase the output (y) by 7. Therefore, the graph is translated 7 units up.

5 0
3 years ago
Read 2 more answers
How do you know weather the quotient of two integers will be a positive number
jeka57 [31]
If the two integers are both the same sign (both positive or both negative), then the quotient will be positive.
5 0
3 years ago
How to tell if a table is a exponential decay function an exponential growth function or neither
aliya0001 [1]

Answer:

Exponential function: a*b^x

if B is less than 1, it is a decay function

if B is more than 1, then it is a growth function  

if B is 0, then the function neither decreases nor increases

Example 1: 100*0.14^x

The y-intercept is decreasing by 86%

Example 2: 3000*1.14^x

The y-intercept is increasing by 14%

Example 3: 400*0

The y-intercept is neither decreasing nor increasing

Going back to the function, <u>a</u> is the y-intercept, and <u>b</u> is the rate

<u>I hope this will help you, I just started to learn about exponential functions..</u>

5 0
2 years ago
Other questions:
  • Built around 2600 BCE, the Great Pyramid of Giza in Egypt is 485 ft high (due to erosion, its current height is slightly less) a
    7·1 answer
  • 11.
    5·1 answer
  • What is scientific notation of 2910000 and 140000
    11·1 answer
  • What is the vaule of 0.77
    11·1 answer
  • Find the output, y, when the input, , is 30.<br> y= 14 - 0.5.2
    5·1 answer
  • What is the solution set of x2 – 10 = 30x?
    6·2 answers
  • Which is a solution to the equation?<br> (x-2)(x + 5) = 18
    6·1 answer
  • What is 88 divided by 11
    5·1 answer
  • I need help with this question
    5·2 answers
  • Can someone try to help?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!