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3 years ago

12

whats the circumference of a circle with radius of 7 inches round your answer to the nearest inch a. 44 inches b. 41 inches c. 1

4 inches d. 21 inches

1 answer:

ivolga24 [154]3 years ago

5 0

Circumference of a cirlce=2πr
Data:
r=7 in

Circumference=2(3.141592....)(7 in)=43.9822...in≈44 in.

Answer: 44 inches.

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Let the mean of the population be 38 instances of from 6" - 9" hatchings per nest, and let the standard deviation of the mean be

Masja [62]

Answer:

Mean of the population having 6"-9" Hatching =38

Standard Deviation =4

Step-by-step explanation:

Confidence interval of 95% means that 95% of data lie within two standard deviations.

That is data values lie between 38-2×4 to 38 +2×4.

⇒Which is 38-8 to 38+8.

⇒30 to 46.

it is also given that margin of error is 2.5%.

So, the data value will lie between

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So, Sample mean of this observation having 2.5% margin of error = 38

Option D:→ 38

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3 years ago

a jewelry store is having a sale. A ring is now reduced to £840. This is a saving of 40% of the original price. Work out the ori

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£1400

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Divide £840 by 60 to find 1% then multiply by 100 to find original price

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3 years ago

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Hitman42 [59]

Answer:

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Step-by-step explanation:

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2 years ago

Is 16x+7 equivalent to 8(2x+9)-2

andrew-mc [135]

no beacuse when distributed it will be:

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a boat costs $16600 and decreased in value by 14% per year. How much will the boat be worth after 11 years?

mr_godi [17]

The worth of boat after 11 years is $ 3159.3013

<em><u>Solution:</u></em>

Given that,

Boat costs $16600 and decreased in value by 14% per year

To find: Worth of boat after 11 years

<em><u>The formula for decreasing function is given as:</u></em>

$y = a(1-r)^t$

Where,

y is the value after "t" years

t is the number of years

a is the initial value

r is decreasing rate in decimal

<em><u>From given,</u></em>

a = 16600

t = 11

$r = 14 \% = \frac{14}{100} = 0.14$

<em><u>Substituting the values we get,</u></em>

$y = 16600(1-0.14)^{11}\\\\y = 16600(0.86)^{11}\\\\y = 16600 \times 0.1903\\\\y = 3159.3013$

Thus the worth of boat after 11 years is $ 3159.3013

4 0

3 years ago