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2 years ago

One of the angles of a regular octagon has a measure of (7x-5) What is the value of x?

Mathematics

2 answers:

Nesterboy [21]2 years ago

6 0

Answer:

Step-by-step explanation:

Regular octagon means that each angle is 135 degrees, so 135 = (7x - 5).

135 = 7x - 5,

135 + 5 = 7x,

140 = 7x,

140 / 7 = x,

20 = x

SIZIF [17.4K]2 years ago

4 0

Answer:

x = 20

Step-by-step explanation:

The interior angles of a regular octagon have measures of ...

180° -360°/8 = 135°

We want that equal to the given expression.

7x -5 = 135

7x = 140 . . . . add 5

x = 20 . . . . . divide by 7

The value of x is 20.

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sashaice [31]

Answer:

Step-by-step explanation:

Let the width be w centimeters.

Then the length = w + 7.

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330 = w(w + 7) = w^2 + 7w.

Now we can rearrange this equation to form a quadratic, as follows:

The factorization of the quadratic is:

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Elza [17]

Answer:

$c=15d$

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a proportional variation if it can be expressed in the form $k=\frac{y}{x}$ or $y=kx$

Let

c ----> the total cost of the boat rental

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