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
dmitriy555 [2]
3 years ago
13

Solve the equation y=2x-4, 3x+y=11​

Mathematics
2 answers:
kari74 [83]3 years ago
6 0

Answer:

Step-by-step explanation:

this system not equation :

y=2x-4 ....(1)

3x+y=11​....(2)

put the value of y by (1)  in to (2) :

3x+2x-4 = 11

add4 : 3x+2x =15

5x=15

x=15/5 = 3

but: y = 2x-4

so :  y =  2(3) -4

y = 6-4=2

Ostrovityanka [42]3 years ago
5 0

Answer:

(3, 2)

Step-by-step explanation:

Given the 2 equations

y = 2x - 4 → (1)

3x + y = 11 → (2)

Substitute y = 2x - 4 into (2)

3x + 2x - 4 = 11

5x - 4 = 11 ( add 4 to both sides )

5x = 15 ( divide both sides by 5 )

x = 3

Substitute x = 3 into (1) for corresponding value of y

y = (2 × 3) - 4 = 6 - 4 = 2

Solution is (3, 2)

You might be interested in
(Fill in the blank)<br> Solve the following equation.
swat32

Answer:

there is no ecuashon

Step-by-step explanation:

h0cududfiififuduc

3 0
3 years ago
Read 2 more answers
A recipe uses 7 parts of milk for every 5 parts of sugar how much sugar do you use when you use 28 cups of milk
stira [4]

Answer:

the answer is 20 cups of sugar

Step-by-step explanation:

7/28= 5/x

x= 20.

x reps the number of cups of sugar

7 0
3 years ago
Y=-2x²-8x-5 domain and range
Jobisdone [24]

Answer:

Domain: All real numbers

Range: y≤3

Step-by-step explanation:

The given function is

y =  - 2 {x}^{2}  - 8x - 5

This is a polynomial function.

The domain is set of all values of x, that makes this function defined.

Since polynomial functions are defined everywhere, the domain is all real numbers.

To find the range we put the function in vertex form:

y =  - 2( {x}^{2}  + 4x) - 5

y =  - 2( {x}^{2}  + 4x + 4) - 5 +  - 4 \times  - 2

y =  - 2( {x}  + 2)^{2} - 5 + 8

y =  - 2( {x}  + 2)^{2}  +  3

The maximum value is 3

The function turns downward, hence the range is:

y \leqslant 3

6 0
3 years ago
Which of the following options is a root of the function? f(x) = (3x + 5) (x2 - 6x + 9)2
Alika [10]

Answer:

The roots of the function are x = -5/3 and 3. Select these.

Step-by-step explanation:

The roots of the function are the solutions to the function. They are also called the x-intercepts or zeros. To find them, factor the function completely and solve using the zero product property.

f(x) = (3x+5)(x2-6x+9)2 becomes f(x) = (3x+5)(x-3)^2

Set each factor equal to 0 and solve for x.

(3x+5)=0

3x = -5

x = -5/3

(x-3)^2 = 0

x - 3=0

x = 3

3 0
3 years ago
I need help with this.
I am Lyosha [343]

Answer:

9x2 and 9x2

Step-by-step explanation:

3 0
3 years ago
Other questions:
  • To make one cheese sandwich, Tina uses one bread roll and two cheese slices.
    15·1 answer
  • Find the product of 5 2/3 and 4 1/2 . Express your answer in simplest form.
    8·2 answers
  • 6.2 x 4.3 + 7.6 simplify
    12·1 answer
  • When is the function increasing
    13·1 answer
  • HELP HELP PLEASE ASAP
    13·1 answer
  • (6x - 5)(6x - 5)(6x - 5)(6x - 5)(6x - 5) = 0
    12·1 answer
  • The senior classes at High School A and High School B planned separate trips to Yellowstone National Park. The senior class at H
    12·1 answer
  • ASAP PLS ANSWER!!! TY!
    9·2 answers
  • 17 + 15 / 3 - 2⁴ and 12⁰ + 3 x 4 - 5¹
    14·2 answers
  • I can't figure out my problem 4-8n+7n-3n-9 ​
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!