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3 years ago

What is 16% of 90 helpppp plssss

Mathematics

1 answer:

Lunna [17]3 years ago

5 0

Answer:

first off, welcome to brainly, second, your answer is 14.4

Step-by-step explanation:

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0.6/18 PLEASE HELP Thanks

Kaylis [27]

0.03 repeating. Hopefully i read the question right!

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3 years ago

Read 2 more answers

Derive the formula for the area of a sector, and then use it to choose all that are correct.

Marina CMI [18]

Answer:

Part A) $A_s=\frac{\pi r^{2}}{360^o}{\theta}$

Part B) option 1,option 4

Step-by-step explanation:

Part A) Derive the formula for the area of a sector

we know that

The area of circle is equal to

$A=\pi r^{2}$

The area of circle subtends a central angle of 360 degrees

using proportion

Find out the area of a sector $A_s$ by a central angle of ∅ degrees

$\frac{\pi r^{2}}{360^o}=\frac{A_s}{\theta}$

$A_s=\frac{\pi r^{2}}{360^o}{\theta}$

Part B) Verify each case

case 1) we have

radius = 5 cm

angle = 120°

area = 26.2 cm 2

Find the area of the sector and then compare with the value of the given area

assume

$\pi=3.14$

substitute the given values

$A_s=\frac{(3.14)(5)^{2}}{360^o}{120^o}$

$A_s=26.2\ cm^2$

The given value of area is correct

case 2) we have

radius = 4 cm

angle = 105°

area = 16.7 cm 2

Find the area of the sector and then compare with the value of the given area

assume

$\pi=3.14$

substitute the given values

$A_s=\frac{(3.14)(4)^{2}}{360^o}{105^o}$

$A_s=14.7\ cm^2$

The given value of area is not correct

case 3) we have

radius = 6 cm

angle = 85°

area = 23.7 cm 2

Find the area of the sector and then compare with the value of the given area

assume

$\pi=3.14$

substitute the given values

$A_s=\frac{(3.14)(6)^{2}}{360^o}{85^o}$

$A_s=26.7\ cm^2$

The given value of area is not correct

case 4) we have

radius = 7

angle = 75°

area = 32.1 cm 2

Find the area of the sector and then compare with the value of the given area

assume

$\pi=3.14$

substitute the given values

$A_s=\frac{(3.14)(7)^{2}}{360^o}{75^o}$

$A_s=32.1\ cm^2$

The given value of area is correct

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3 years ago

What is another name for plane Z?

lara31 [8.8K]

Other names for "plane Z" include:
___________________________
1) The "z-plane";
___________________________
2) The "complex plane";
___________________________
3) the "domain of the z-transform"
_____________________________

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2 years ago

Juan starts with $10 in his bank and adds $5 to it every day. Maria starts with $5 in her bank and adds $10 to it every day. Ple

Masteriza [31]

Juan- y=5x+10

Maria- y= 10x+5

In these equations y symbolises all the money they have after the x amount of days so by the x you put the amount of money they put in their bank every day and at the end add the amount of money they put in the bank at the start.

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2 years ago

Which diagram does not result in the expression 4x+4

babunello [35]

Diagram D and are you in school

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3 years ago