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
damaskus [11]
3 years ago
12

WILL GIVE 40 BRAINLY

Mathematics
1 answer:
irina [24]3 years ago
8 0

Answer:

(3,2)

Step-by-step explanation:

The method of variable substitution is a way of solving a system of equations. It involves solving one equation for a variable and then substituting in the expression that represents the value of the solved variable into the other equation. After doing so, one can solve for the unknown variable and then backsolve for the other variable.

y=-2x+8\\y=x-1

In this system, the second equation is already solved for (y), thus one can substitute that expression into the other equation in the system.

x-1 = -2x + 8

Now solve using inverse operations,

x -1 = -2x + 8\\+2x\\\\3x - 1 = 8\\+1\\\\3x =9\\/3\\\\x = 3

Backsolve to find the value of (y), substitute in the value of (x), and solve for the value of (y).

y=x - 1\\

Substitute,

y=(3)-1

Solve,

y=2

Thus, the answer to this system of equations is the following, (3,2).

You might be interested in
I need help very important
siniylev [52]

Answer:

∠ EFG = 83°, ∠ GCE = 97°

Step-by-step explanation:

Since FE and FG are tangents to the circle then

∠ FGC and ∠ FEC are right angles

The sum of the angles in quadrilateral CEFG = 360°

Sum the 4 angles and equate to 360

3x + 11 + 90 + 5x - 23 + 90 = 360, that is

8x + 168 = 360 ( subtract 168 from both sides )

8x = 192 ( divide both sides by 8 )

x = 24

Thus

∠ EFG = 3x + 11 = 3(24) + 11 = 72 + 11 = 83°

∠ GCE = 5x - 23 = 5(24) - 23 = 120 - 23 = 97°

4 0
3 years ago
What is the volume of the right rectangular prism below?
Vesnalui [34]

Answer:

Volume of right rectangular prism = 3.75 in³

Step-by-step explanation:

Given:

First side of rectangular prism = 2 inches

Second side of rectangular prism = 1\frac{1}{2} = 1.5 inches

Third side of rectangular prism = 1\frac{1}{4} = 1.25 inches

Find:

Volume of right rectangular prism:

Computation:

Volume\ of\ right\ rectangular\ prism=lbh\\\\Volume\ of\ right\ rectangular\ prism=(2)(1.5)(1.25)\\\\ Volume\ of\ right\ rectangular\ prism= 3.75 in^3

7 0
2 years ago
Hii, can someone please help me — I’m really mad in math
Orlov [11]
The answer is c for this
8 0
3 years ago
How many ten dollar bills are there in twenty one hundred bills?
Yanka [14]
20 one hundred bills = 2000
2000 divided by 10 = 200
The answer is 200
7 0
3 years ago
Read 2 more answers
What property could be used to solve 6x=72
katovenus [111]
There is no property that can be used but you can find the answer by dividing 72 and 6

4 0
3 years ago
Read 2 more answers
Other questions:
  • What expression is equivalent to 4 to the 4th power x 4 to the -9th power?
    11·1 answer
  • Write an expression to describe the sequence below. Use n to represent the position of a term in the sequence, where n = 1 for t
    10·1 answer
  • A stadium holds 50,000 people.The stadium is divided into 250 different seating sections.How many seats are in each section?
    12·2 answers
  • What are the similarities and differences between these data sets in terms of their centers and their variability?
    8·1 answer
  • Write 9983 in expanded form
    9·2 answers
  • A box of candy hearts contains 52 hearts, of which 19 are white, 10 are tan, 7 are pink, 3 are purple, 5 are yellow, 2 are orang
    13·1 answer
  • -a + 4a - 9 = 8a + 6
    13·1 answer
  • A sales associate in a department store earns a commission on each suit and each pair of shoes sold. One week, she earned $47 in
    8·1 answer
  • (2 1/2+2/5) (5 1/3-16/3)​
    12·1 answer
  • City code says you need to have at least 50 toilet stalls, but each bathroom can only have 10 stalls. You need to have the same
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!