2 years ago

Help please I need this fast

Mathematics

1 answer:

tangare [24]2 years ago

3 0

Answer:

D. 6i

Step-by-step explanation:

You might be interested in

Which pair of angles must be supplementary? HURRYYYYY!

lisabon 2012 [21]

Answer:

1 and 3, if im wrong i am sorry I have not don this in a long time

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

Determine x please.

Margaret [11]

Ne demek istoyusun anlamadım

8 0

2 years ago

Read 2 more answers

A rope of length 18 feet is arranged in the shape of a sector of a circle with central angle O radians, as shown in the

creativ13 [48]

Answer:

$A(\theta)=\frac{162 \theta}{(\theta+2)^2}$

Step-by-step explanation:

The picture of the question in the attached figure

step 1

Let

r ---> the radius of the sector

s ---> the arc length of sector

Find the radius r

we know that

$2r+s=18$

$s=r \theta$

$2r+r \theta=18$

solve for r

$r=\frac{18}{2+\theta}$

step 2

Find the value of s

$s=r \theta$

substitute the value of r

$s=\frac{18}{2+\theta}\theta$

step 3

we know that

The area of complete circle is equal to

$A=\pi r^{2}$

The complete circle subtends a central angle of 2π radians

using proportion find the area of the sector by a central angle of angle theta

Let

A ---> the area of sector with central angle theta

$\frac{\pi r^{2} }{2\pi}=\frac{A}{\theta} \\\\A=\frac{r^2\theta}{2}$

substitute the value of r

$A=\frac{(\frac{18}{2+\theta})^2\theta}{2}$

$A=\frac{162 \theta}{(\theta+2)^2}$

Convert to function notation

$A(\theta)=\frac{162 \theta}{(\theta+2)^2}$

6 0

3 years ago

Please help using the picture below I need the surface area I also need an explanation

Taya2010 [7]

Answer:

155

Step-by-step explanation:

5*5=25

((5*13)/2)*4=130

130+25=155

6 0

2 years ago

An artist mixes colors for a painting. She mixes 1.5 ounces of blue with 2.5 ounces of yellow to get the perfect shade of green.

lesya692 [45]

Answer:

4.5 ounces of yellow and 7.5 ounces of blue will create 12 ounces of the perfect shade of green.

Step-by-step explanation:

1.5 + 2.5 = 4 ounces.

Multiply by 3

4.5 + 7.5 = 12 ounces

So, she needs 4.5 ounces of yellow.

4 0

3 years ago