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
const2013 [10]
4 years ago
12

How many solutions does this linear system have?

Mathematics
1 answer:
mars1129 [50]4 years ago
5 0

Answer:

one solution: (2.5, 0)

Step-by-step explanation:

Given the following system of equations;

y = 2x - 5

-8x - 4y = -20

To find the solution to the equations, we would use the substitution method;

Substituting eqn 1 into eqn 2, we have;

-8x - 4(2x - 5) = -20

-8x - 8x + 20 = -20

-16x + 20 = -20

-16x = -40

x = 40/16

x = 2.5

Next, we would determine the value of y;

y = 2x - 5

y = 2(2.5) - 5

y = 5 - 5

y = 0

You might be interested in
What is the inverse function of d(x ) = -2x - 6?<br> DO NOT answer if you're not sure
rjkz [21]

First make the equation equal y

Y=-2x-6

Then rearrange to make x the subject

2x=-y-6

X=(-y-6)/2

Then change the y's to x's

Inverse=(-x-6)/2

7 0
3 years ago
In the solution to the equation shown, what property allows you to transform from one step to the next?
nekit [7.7K]

Multiplicative Inverse Property

Answer: Option C.

<u>Explanation:</u>

A multiplicative reverse is a reciprocal. A complementary is one of a couple of numbers that when increased with another number equivalents the number 1. The multiplicative converse property expresses that for each number that isn't zero, x increased with 1/x will rise to 1.

In mathematics, a multiplicative backwards or corresponding for a number x, meant by 1/x or x−1, is a number which when increased by x yields the multiplicative personality, 1. ... For instance, the corresponding of 5 is one fifth (1/5 or 0.2), and the equal of 0.25 is 1 partitioned by 0.25, or 4.

4 0
3 years ago
Review:
alex41 [277]

Answer:

Step-by-step explanation:

Well 6 to the second power is when you multiply 6 x 6 = 36

And ab= -320

7 0
3 years ago
The length of a rectangle is twice its width. if the perimeter is 72 meters, find the length and width of the rectangle
madam [21]
Length(l)= 2w
width(w)= w

Perimeter(P)= 2w+2l= 72 (simplify expression: divide each side by 2 )
P= w+l= 36 (plug in "2w" for "l")
P= w+(2w)= 36
P= 3w= 36 (divide each side by 3 to find the width)
w= 12 units

find length:
l=2w
l= 2(12)
l= 24 units

Answer:
The length of this rectangle is 24 units and the width is 12 units.
6 0
3 years ago
A _____________ _________________ is used to smother small fries on/in objects or on a person.
ankoles [38]

Answer:

Ketchup, bottle

Step-by-step explanation:

I am confused on this but hope it help you.

Have a great day!

7 0
3 years ago
Other questions:
  • Find the sales price of the following item.
    12·2 answers
  • Last week Jackson read 262.5 pages of a new adventure book. If he read for 5.25 hours how many pages did Jackson read per hour?
    7·2 answers
  • A like has two-fold Symmetry
    10·1 answer
  • The value of a stock increased 1 ¼ points Monday morning. On Monday afternoon, the value of the stock decreased 1 ⅔ points. On T
    14·1 answer
  • Plzzzzzzzzzzzzzzzzzzzz halppppppppppppppppp
    8·1 answer
  • What was the price of the car before the sales tax was added?
    15·1 answer
  • 1,345,456,234,234,345,234,-1234,567,890=? My subsititue is being mean so we can not use calculatars and I do not like to cheat a
    15·1 answer
  • The living room size on the blue print is 6 inches and the actual size is 10 feet. What is the scale factor?
    13·1 answer
  • 8. Between which two consecutive integers does the radical √77 lie?<br> __&lt; √77 &lt;__
    9·2 answers
  • Find the area of the parallelogram 300 in^230 in^260 in^250 in^2
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!