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3 years ago

Is this a polygon Yes or no

Mathematics

1 answer:

Kobotan [32]3 years ago

6 0

No its not a polygon.

It has a curve where as a polygon is a plane figure with at least three straight sides and angles

Thanks for the help xoxoate!

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An equation is shown -4/5 (9x-20)-3x 4/5 x -6

Amanda [17]

Answer: x=2

Step-by-step explanation:

if u plug in the value of x=2 into the equation both sides equal -22/5

5 0

3 years ago

A rectangle’s length is three times its width, w. Its area is 243 square units. Which equation can be used to find the width of

Anastaziya [24]

Answer:

b) 3w² = 243

Step-by-step explanation:

area = L x w

L = 3w

substitute for L:

243 = 3w x w = 3w²

3w² = 243

5 0

3 years ago

The expression cos^-1 (3/5) has an infinite number of values.. True or False.

Pavel [41]

Answer:

The given statement:

The expression cos^-1 (3/5) has an infinite number of values is a true statement.

Step-by-step explanation:

We are given a expression as:

$\arccos (\dfrac{3}{5})$

Let us equate this expression to be equal to some angle theta(θ)

i.e.

Let

$\arccos (\dfrac{3}{5})=\theta\\\\\cos \theta=\dfrac{3}{5}$

As we know that the limit point of the cosine function is [-1,1]

i.e. it takes the value between -1 to 1 and including them infinite number of times.

Also,

-1< 3/5 <1

This means that the cosine function takes this value infinite number of times.

That is there exist a infinite number of theta(θ) for which:

$\cos \theta=\dfrac{3}{5}$

i.e. the expression:

$\arccos (\dfrac{3}{5})$ has infinite number of values.

6 0

3 years ago

Read 2 more answers

I get see photo. I l ow this is wrong. Can you help?

mylen [45]

Given the equation:

$y=x^2+x-4$

We will find the value of (y) when ( x = 2i )

Note: i² = -1

so, when x = 2i

$y=(2i)^2+(2i)-4$

Simplifying the answer

So,

$\begin{gathered} y=4i^2+2i-4 \\ y=4\cdot(-1)+2i-4 \\ y=-4+2i-4 \\ y=-8+2i \end{gathered}$

So, the answer will be y = -8+2i

8 0

1 year ago

Write the slope-intercept form of the equation of each line.<br> 5)9x=-3+6y

jekas [21]

Answer:

-3+6y = 9x

6y = 9x+3

y = 9/6x+3/6

y = 3/2x+1/2 ⇒ slope-intercept form

8 0

3 years ago