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ExtremeBDS [4]
3 years ago
9

An octagon is a polygon with eight sides. Which of the following

Mathematics
1 answer:
erastovalidia [21]3 years ago
3 0

Answer:

The second answer option:

"A polygon is an octagon if and only if it has eight sides."

Step-by-step explanation:

A biconditional statement needs to have a conditional statement and also its reverse. This is in general happening in a case of a statement with the "If-and-only-if" form.

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The graph of a quadratic function has a vertex at (5,3) and goes through the point (-1,-9). What is the equation of the function
kotegsom [21]

Answer:

y=-\frac{1}{3} (x-5)^2+3

Step-by-step explanation:

We are given the following;

  • Vertex of a quadratic function = (5,3)
  • A point where the function passes through (-1, -9)

Required to determine the equation of the function;

  • We need to know the vertex form of a quadratic function is;

y=a(x-h)^2+k, where h and k correspond to the vertex (h,k)

  • Therefore, we can replace the variables h and k of the vertex in the equation;

That is;

y=a(x-5)^2+3

Then we use the equation and the point given to solve for a

x = -1 and y = -9

We get;

-9=a(-1-5)^2+3\\-9 = a(36) + 3\\-9 - 3 = 36a\\-12 =36a \\a=-\frac{1}{3}

Substituting the values of a, h and k in the equation, we get;

y=-\frac{1}{3} (x-5)^2+3

Thus, the equation of the function in the vertex form is y=-\frac{1}{3} (x-5)^2+3

8 0
3 years ago
What is the expression of 5 times the difference between 19 and 13
saveliy_v [14]

Answer:

5 x 6

Step-by-step explanation:

5 0
3 years ago
Factor the following expression x^2-36
Tomtit [17]
Factor the following:
x^2 - 36
x^2 - 36 = x^2 - 6^2:
x^2 - 6^2
Factor the difference of two squares. x^2 - 6^2 = (x - 6) (x + 6):
Answer:  (x - 6) (x + 6)
7 0
3 years ago
What number best completes both equations? 5/7÷1/3=? ?×1/3=5/7
Nat2105 [25]

Consider the given equations:

The first equation is as:

\frac{5}{7} \div \frac{1}{3} = ?

So, \frac{5}{7} \div \frac{1}{3}

= \frac{5}{7} \times \frac{3}{1}

Multiplying the given fractions, we get as

= \frac{15}{7}

Now, consider the second equation as:

? \times \frac{1}{3} = \frac{5}{7}

Multiplying by '3' to both the sides of the equation, we get

? \times \frac{1}{3} \times 3 = 3 \times \frac{5}{7}

? = \frac{15}{7}

So, the number which best completes both the equations is \frac{15}{7}.

6 0
3 years ago
When Chef Alice makes rice pilaf for 30 people, she uses 15 cups of chicken broth and 10 cups of rice. Dan wants to make the sam
AVprozaik [17]

Answer:

3 cups rice 4 1/2 cups of chicken broth

15 over 30 equals 1/2 cup per person

10 over 30 equals 1/3 per person multiply each by 9 and you have your answer!

5 0
3 years ago
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