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3 years ago

Which equation represents the rectangular form of r = 4cos(θ)?

Mathematics

2 answers:

julia-pushkina [17]3 years ago

6 0

Answer:

it’s a

Step-by-step explanation:

got it right

Sauron [17]3 years ago

5 0

Answer:

a. (x – 2)2 + y2 = 4

Step-by-step explanation:

edge 2021

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Plz I need help’mmmmmmmm

Anna007 [38]

Answer:

Therefore,

$C=\pi d\\C\approx 3.14 \times d\\C\approx 43.96\ inches$

Step-by-step explanation:

Let Assume Some Diameter of a Circle, to Solve it

Diameter = d = 14 inch ( say )

C =Circumference

Pi =constant = 3.14

To Find:

C = ?

Solution:

Formula for Circumference of a Circle is given as

$C=\pi d$

Where,

C = Circumference

d = Diameter

Now Substitute d = 14 inches we get

$C=3.14\times 14\approx 43.96\ inches$

This way we can find the circumference for any 'd' i.e Diameter

Therefore,

$C\approx 43.96\ inches$

6 0

4 years ago

Find all points on the y-axis that are 5 units from the point (4,4).

V125BC [204]

Answer:

-4,9 , -4,-1 , 4,-1 , 4,9

Step-by-step explanation:

The y-axis is straight up and if you move down on the and moving up 5 is 9 and moving down 5 is -1 and depending if it's on the right of left (negative or positive) the x-axis is (the 4) is postive or negative.

3 0

3 years ago

Answer now!!! Please!!! (Math)

Serggg [28]

Answer:

The correct answer option is $\frac{25}{9}$ .

Step-by-step explanation:

We are given the following expression and we are to evaluate it when $a = 5$ and $k = -2$ :

$[\frac{3^2a^{-2}}{3a^{-1}} ]^k$

Substituting the given values of $a$ and $k$ to get:

$[\frac{3^2(5)^{-2}}{3(5)^{-1}} ]^{-2}$

$\frac{3^{(2\times -2)}.5^{(1\times-2)}}{3^{(-1\times-2)}.5^{(2\times-2)}}$

$\frac{3^{-4}.5^{-2}}{3^{-2}.5^{-4}}$

$3^{-2}.5^2$

$\frac { 1 } { 3 ^ 2 } . 2$

$\frac { 1 } { 9 } . 2 5$

$\frac { 2 5 } { 9 }$

4 0

3 years ago

Find the product mentally. [(x + 1)(x - 1)]2

Troyanec [42]

(x+1)(x−1)(2) =2x^2−2

7 0

4 years ago

Read 2 more answers

I"m actually begging you to help

Rufina [12.5K]

Answer:

(Square, Right Triangle)

18 meters²

Step-by-step explanation:

You can divide the shape into a square and right triangle, see the attachment :)

The area of the square is the length times the width. So,

3 · 3 = 9

The area of the square is 9 m².

The triangle's area is the base times the height divided by 2. So,

6 · 3 = 18

18 / 2 = 9

The triangle has an area of 9 m².

Add these together.

9 + 9 = 18

The area is 18 meters².

6 0

3 years ago