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
vesna_86 [32]
3 years ago
13

Solve the system by substitution. y=x2 – 2x+1 y= 2x+1

Mathematics
1 answer:
mafiozo [28]3 years ago
6 0

Answer:

(0 , 1), (4, 9).

Step-by-step explanation:

y = x2 – 2x+1

y = 2x+1

Substitute y = 2x + 1 into the first equation.

2x + 1 = x^2 - 2x + 1

x^2 - 2x - 2x  = 0

x^2 - 4x = 0

x(x - 4) = 0

x  = 0, 4.

When  x = 0, y = 1.

When x = 4, y = 8 + 1 = 9.

You might be interested in
Please help with these math questions I really need it ! Don't just do it for points pls
steposvetlana [31]

Answer:

wouldn't that be 81 but i dont know

3 0
2 years ago
Read 2 more answers
A right triangle's height is 3 times the length of its base. if the area of the triangle is 486, what is the height?
Irina-Kira [14]
The formula of the area of a triangle:
A_\Delta=\dfrac{bh}{2}
b - the bash - the height
We have:
b - the base3b - the height486 - the area

Substitute:
\dfrac{3b\cdot b}{2}=486\ \ \ |\cdot2\\\\3b^2=972\ \ \ |:3\\\\b^2=324\to b=\sqrt{324}\\\\b=16\to h=3b=3\cdot18=54
Answer: The length of the height is equal 54 units.
4 0
3 years ago
What point in the feasible region maximizes the objective function, 3x + y ≤ 12, x+y ≤5, x ≥0,y ≥0
forsale [732]

Step-by-step explanation:

We have to find the point in the feasible region which maximizes the objective function. To find that point first we need to graph the given inequalities to find the feasible region.

Steps to graph 3x + y ≤ 12:

First we graph 3x + y = 12 then shade the graph for ≤.

plug any value of x say x=0 and x=2 into 3x + y = 12 to find points.

plug x=0

3x + y = 12

3(0) + y = 12

0 + y = 12

y = 12

Hence first point is (0,12)

Similarly plugging x=2 will give y=6

Hence second point is (2,6)

Now graph both points and joint them by a straight line.

test for shading.

plug any test point which is not on the graph of line like (0,0) into original inequality 3x + y ≤ 12:

3(0) + (0) ≤ 12

0 + 0 ≤ 12

0 ≤ 12

Which is true so shading will be in the direction of test point (0,0)


We can repeat same procedure to graph other inequalities.

From graph we see that ABCD is feasible region whose corner points will result into maximum or  minimu for objective function.

Since objective function is not given in the question so i will explain the process.

To find the maximum value of objective function we plug each corner point of feasible region into objective function. Whichever point gives maximum value will be the answer

7 0
3 years ago
HELPPPP!!!!!!!!!!!!!!!! pls hurry , need correct answers 3
scZoUnD [109]

Answer:

"A value that is substituted in for the variable in a function in order to generate an output value" is gonna be known as an input.

"A group of two numbers written in the form (x, y) where the x value represents a horizontal position and the y value represents a vertical position" is known as an ordered pair.

"A value generated by a function when an input value is substituted into the function and evaluated" is known as an output.

I hope I have helped with this problem. Have a good day.

4 0
2 years ago
Read 2 more answers
Pls help me will give brainliest
Nuetrik [128]

Answer:

Step-by-step explanation:

6 0
2 years ago
Other questions:
  • Find the height of a triangle that has an area of 30 square units and a base measuring 12 units.
    7·1 answer
  • Solve for b. A=h(a+b)/2
    7·1 answer
  • What would the equation be for a quadratic equation with a vertex of (-5,-2)?
    14·1 answer
  • HELP PRECALC DO NOT UNDERSTAND WILL GIVE BRAINLIEST
    14·1 answer
  • Find the length of arc AB
    5·1 answer
  • I need help pleaseeeeeeeee
    5·1 answer
  • The roof of a home rises vertically by 7 ft through a horizontal distance of 15 ft. Find the pitch (slope) of the roof.
    10·2 answers
  • A function g is described below:
    10·1 answer
  • What is the equation for these tables.
    8·1 answer
  • Need help will give brainlist​
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!