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mote1985 [20]
3 years ago
11

Please explain i really don’t understand

Mathematics
1 answer:
Lemur [1.5K]3 years ago
8 0

Answer:

22.5°

Step-by-step explanation:

First we need to figure out the size of the interior angles on the inside.

The formula of figuring out the total degrees of all the interior angles of any shape is (n-2)×180°.

N is the number of sides.

If we substitute our number of sides (8) we get this:

(8-2)×180°

6×180° = 1080°

Then we divide 1080 by 8 since this is a regular octagon (all angles are equal in a regular shape).

1080° ÷ 8 = 135°

Focusing on the triangle now, we now know that the angle on the tip of the triangle is 135° as it has not been split by the line.

Using the rule of angles in a triangle add up to 180°. We do this sum:

180° - 135° = 45°

There are 2 angles left in the triangle so we do:

45° ÷ 2 = 22.5°

Therefore the angle of x is 22.5°.

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Write a polynomial function f of least degree that has rational coefficients, a leading coefficient of 1, and the zeros −3 and 5
love history [14]

Answer:

<em>f(x) = x² (2+i)x-15-3i</em>

Step-by-step explanation:

Since the zeros of the equation are -3 and 5+i, hence the factors of the polynomial in x is (x+3) and (x-(5+i))

Multiplying both factors

f(x) =  (x+3)(x-(5+i))

f(x) = (x²-(5+i)x+3x -3(5+i))

f(x) = x² - (5+i- 3)x -15-3i

f(x) = x² (2+i)x-15-3i

<em>hence the required polynomial function in x is f(x) = x² (2+i)x-15-3i</em>

7 0
3 years ago
What is the horizontal asymptote of the function given?
Virty [35]

Answer:

y=2

Step-by-step explanation: horizon shows where the dotted line crosses the y axis

7 0
2 years ago
Find the equation of the line that passes through (1,2) and is perpendicular to
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Answer:

Remember that the slope of perpendicular lines are negative reciprocals of each other.

Step-by-step explanation:

y = 1 - 2x     the slope is -2     the value of the x term.

So the slope of the new line using point (- 1, 2)  is  1/2.

Now use y = mx + b where y = -1, x = 2, and m = 1/2 .

y = mx + b

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3 0
2 years ago
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Answer:

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Step-by-step explanation:

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8 0
3 years ago
1) For the data in the table, does y vary directly with x? If it does, write an equation for the direct variation.​
Gelneren [198K]

Answer:

Yes, "y" varies directly with "x".

The equation is:  y=1.375x

Step-by-step explanation:

 By definition, Direct variation equations have the following form:

y=kx

Where "k" is the Constant of variation.

If you solve for "k", the equation is:

k=\frac{y}{x}

Then, given the table provided in the exercise, you can know if "y" varies directly with "x" by finding the quotient of the correspoding values of "x" and "y":

- Dividing  y=11 by x=8 you get:

\frac{11}{8}=1.375

- Divide y=22 by x=16:

\frac{22}{16}=1.375

- Dividing  y=33 by x=24:

\frac{33}{24}=1.375

Since the quotient is constant, then "y" varies directly with "x" and the the Constant of variation is:

k=1.375

Therefore, the equation  for the Direct variation is:

y=1.375x

8 0
3 years ago
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