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3 years ago

A dinner plate has a circumference of 106.76 cm. What is the area of the dinner plate? Use = 3.14.

1 answer:

3 0

C=2pr, r=c/(2p)

a=pr^2, using r found above we get:

a=p(c^2/(4p^2))

a=(c^2)/(4p), since c=106.76 and we approximate pi as 3.14

a=(106.76^2)/(4*3.14)

a=11612.2176/12.56 cm^2

a≈924.54 cm^2 (to nearest one-hundredth of a square cm)

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Si la poblacion de india es de 1,189,173,000 de habitantes, aproximadamente, y la tercera parte son menores de 15 años cuantos n

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Answer:

There are 396,391,000 people smaller than 15 in India.

396,391,000 niños de esa edad hay en India

Step-by-step explanation:

We have that:

India has 1,189,173,000 habitants.

A third of this is smaller than 15.

How many people smaller than 15 are there in India?

(1/3)*1,189,173,000 = 396,391,000

There are 396,391,000 people smaller than 15 in India.

396,391,000 niños de esa edad hay en India

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3 years ago

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Try solving for the variable and get everything to one side

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The air quality index, or aqi, measures how polluted the air is in your city and assigns a number based on the quality of the ai

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The number of days in which the air quality index exceed 100 in the year 1988 is 75 days. Then the correct option is B.

<h3>What is a function?</h3>

The function is an expression, rule, or law that defines the relationship between one variable to another variable. Functions are ubiquitous in mathematics and are essential for formulating physical relationships.

The air quality index (AQI) is given by the function.

$\rm n = 1.76t^2-13.32 +41$

Where n be the number of days the AQI exceeds 100 in a given year.

For $\rm t = -2$ , then we have

$\rm n = 1.76(-2)^2-13.32(-2) +41\\\\n = 7.04+26.64+41\\\\n = 74.68 \approx 75$

More about the function link is given below.

brainly.com/question/5245372

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3 years ago

A surf shop rents surfboards and charges x dollars for one rental day. it gives a discount for a weekly seven day rental and onl

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A. The shop charges $8.517 for a one-day rental

B. The shop charges $42.857 for a weekly rental.

Step-by-step explanation:

Step 1; The shop charges $x for a one-day rental and $5x for a weekly rental. Assume $x = a and $5x = b, from this we can write,

5a = b, take this as equation 1.

Step 2; The shop had a total sale of $600 by renting 20 boards for a one-day rental and 10 boards for a weekly rental. So,

20a + 10b = 600, take this as equation 2.

Substituting equation 1 in 2, we get

20a + 10 (5a) = 600,

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a = $8.5714.

From equation 1, 5a = b,

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b = $42.857.

So for a one-day rental, the shop charges $8.5714 and for a weekly rental it charges $42.857.

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