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2 years ago

15

Find the area of the shaded region.

1 answer:

mihalych1998 [28]2 years ago

8 0

Answer:

351π cm^2.

Step-by-step explanation:

Area of shaded part = area of the large circle - area os small circle

= π * (13+7)^2 - π * 7^2

= 400π - 49π

= 351π.

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All the applicants chose at least one of the three countries Egypt, Ghana and South Africa. A total of 2417 applicants chose Egy

cestrela7 [59]

Answer:

hard quiz

Step-by-step explanation:

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3 years ago

The Yert family hires a landscaping company for 30 weeks. There are two companies to choose from. Green Lawns charges $1 for the

Nikolay [14]

Answer:

$133.77

I am pretty sure that this is the answer.

Step-by-step explanation:

1 + (1.25)^29 = 646.23

200 + (20 x 29) = 780

780 - 646.23 = 133.77

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3 years ago

12.4. Measure of Dispersion<br>2076 Q.No. 15 Find the standard deviation of: 4, 6, 8, 10, 12.

Alenkinab [10]

Answer:

Standard deviation of given data = 3.16227

Step-by-step explanation:

<u><em>Step(i)</em></u>:-

Given sample size 'n' = 5

Given data 4, 6,8,10,12

$Mean = \frac{4+6+8+10+12}{5} = 8$

Mean of the sample x⁻ = 8

Standard deviation of the sample

$S.D = \sqrt{\frac{Sum(x-x^{-} )^{2} }{n-1}}$

<u><em>Step(ii)</em></u>:-

Given data

x : 4 6 8 10 12

x-x⁻ : 4 - 8 6-8 8-8 10-8 12-8

(x-x⁻) : -4 -2 0 2 4

(x-x⁻)² : 16 4 0 4 16

$S.D = \sqrt{\frac{Sum(x-x^{-} )^{2} }{n-1}}$

$S.D = \sqrt{\frac{16+4+0+4+16}{4}}$

S.D = √10 = 3.16227

<u><em> Final answer</em></u>:-

The standard deviation = 3.16227

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2 years ago

19 6/7 divided by 4 1/8

anygoal [31]

<span>4</span> $\frac{188}{231}$
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2 years ago