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
timama [110]
3 years ago
6

Anybody know this ???

Mathematics
1 answer:
EleoNora [17]3 years ago
5 0

Answer:

add all of the sides together

Step-by-step explanation:

You might be interested in
Y=-x^2+6x-4<br> Find the Axis of Symmetry and the Vertex, Also solve the whole equation.
Inessa [10]

Answer:

1. <em>Axis of symmetry</em>: x = 3

2. <em>Vertex:</em> (3,5)

3. <em>Solution of the equation</em>:

<u />

  • x-intercepts:

               (3-\sqrt{5},0) \\\\(3+\sqrt{5},0)

  • y-intercept: (0, -4)

Explanation:

<u>1. Equation:</u>

    y=-x^2+6x-4

<u>2. </u><em><u>Axis of symmetry:</u></em>

That is the equation of a parabola, whose standard form is:

                 y=ax^2+bx+c

Where:    

                 a=-1;b=6;c=-4

The axis of symmetry is the vertical line with equation:

               x=-b/2a

Substitute  a=-1,\text{ and }b=6

          x=-6/[(2)(-1)]=-6/(-2)=3

Thus, the axis of symmetry is:

            x=3

<em><u>3. Vertex</u></em>

<em><u /></em>

The x-coordinate of the vertex is equal to the axys of symmetry, i.e x = 3.

To find the y-xoordinate, substitute this value of x into the equation for y:

               y=-x^2+6x-4\\\\y=-(3)^2+6(3)-4=-9+18-4=5

Therefore, the vertex is (3, 5)

<u>4. Find the x-intercepts</u>

The x-intercepts are the roots of the equation, which are the points wher y = 0.

        y=-x^2+6x-4=0

Use the quadratic equation:

       x=\frac{-b\pm \sqrt{b^2-4ac} }{2a} \\\\x=\frac{-6\pm\sqrt{(-6)^2-4(-1)(-4)} }{2(-1)}\\\\x_1=3-\sqrt{5} \\\\x_2=3+\sqrt{5}

<u>5. Find the y-intercept</u>

<u />

The y-intercet is the value of y when x=0:

         y=-x^2+6x-4\\\\y=-(0)^2+6(0)-4=-4

7 0
3 years ago
Can someone please help me?
melomori [17]

Answer:

Hello! answer: 21.4

Hope that helps!

7 0
2 years ago
Solve for b, i already solved for A <br> will give brainliest
larisa86 [58]

Answer:

b=23 degrees

Step-by-step explanation:

a was 66 degrees so b=23 degrees   180-90-66=23

6 0
3 years ago
Amy borrowed $7000 from the bank for six years and was charge simple interest the total interest that she paid on the loan was $
anastassius [24]

Answer:9%

Step-by-step explanation:

7 0
3 years ago
Help please!
Lemur [1.5K]

Answer:

Step-by-step explanation:

a I’m pretty sure

5 0
3 years ago
Read 2 more answers
Other questions:
  • 67,396 divided by 123
    12·2 answers
  • What is the next number in the sequence? 3, 7, 15, 31, 63
    6·2 answers
  • Given the function f(x)=6x^2+3 Find f(2a)
    9·1 answer
  • Plzzzzz help me plzzzz le may give brainlist
    14·1 answer
  • Can someone pls help
    10·2 answers
  • Help me this ASAP!!!!
    6·1 answer
  • Write 75m:125cm in its simplest form​
    5·2 answers
  • Yolanda found that her hair
    11·1 answer
  • Which of the following points lies on the line 2x+3y=5?
    14·1 answer
  • 7) If you can buy 4 tulip bulbs for $8<br> then how many<br> bulbs can you buy with $32?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!