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BlackZzzverrR [31]
3 years ago
6

Find the area of this quarter circle. r=6

Mathematics
1 answer:
boyakko [2]3 years ago
5 0

28.3

Step-by-step explanation:

imagine it's a complete circle, and find its are

pi × r^2

which is 36pi (keep ur answer in pi for now)

because it's a quarter of a circle ( 1/4) we decide the are of the full circle by 4 to get the quarter's area

36pi ÷4 = 28.27433388 which is about 28.3 ( as u see we kept it in pi for a more accurate number)

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X/-9 is gteater than or equal to 3
Tanzania [10]

x÷-9≥3 then you multiply by -9 so after it will be x≥-27

3 0
3 years ago
Miley’s music has a sale on music CDs. All music CDs are discounted 15%. Mariana’s receipt indicates that she saved $3 on her CD
Tcecarenko [31]

she saved $3, and we know the discount is 15%, so her savings is that 15%, thus we know 15% of that purchase is 3.


let's say the full price is x, and therefore the 100%, if we know 3 is the 15%, what is x?


\bf \begin{array}{ccll} amount&\%\\ \cline{1-2} 3&15\\ x&100 \end{array}\implies \cfrac{3}{x}=\cfrac{15}{100}\implies \cfrac{3\cdot 100}{15}=x\implies 20=x

7 0
3 years ago
The loudest sound, measured in decibels, is calculated using the formula L=10 log, where L is the loudness, and I is the intensi
12345 [234]

The intensity of a fire alarm that measures 125 dB loud is 268,337.29

<h3>Formula and expressions</h3>

Given the expression L=10 logI

where;

  • L is the loudness
  • I is the intensity of the sound.

Given the following parameters

L = 125dB

Substitute the given parameters into the following

L=10 logI

125 = 10logI

logI = 125/10

logI = 12.5

I = e^12.5

I = 268,337.29

Hence the intensity of a fire alarm that measures 125 dB loud is 268,337.29

Learn more on subject of formula here: brainly.com/question/657646

7 0
2 years ago
Write an equation in slope intercept form (y=mx+b) for the graph below
mojhsa [17]

Answer:

y=-x+2

Step-by-step explanation:

Y intercept = 2

Slope = -1/1 = 1

y=-1x+2

Simplified

y=-x+2

4 0
3 years ago
What is the distance between points a and b
nikitadnepr [17]

Answer:

6

Step-by-step explanation:

I counted

8 0
3 years ago
Read 2 more answers
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