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2 years ago

9

Which is a closer estimate of pi? Explain your answer.

1 answer:

nydimaria [60]2 years ago

6 0

The fraction 22/7 has a value of 3.142857, so it has the same first three digits as pi. Both 3.14 and 22/7 are approximations of pi. In fact, 22/7 is close to pi than 3.14 is. Pi is irrational. That is, the decimal expansion never ends and never repeats, so any number of decimal places we wrote out is an approximation. The approximation 3.14 is about 1/2 percent off from the true value, and the fairly well know 3.141559 is within 0.000084 percent.

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Which explains whether or not the function represents a direct variation?

s2008m [1.1K]

Answer:

The function represents a direct variation

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a direct variation if it can be expressed in the form $y/x=k$ or $y=kx$

In a linear direct variation the line passes through the origin and the constant of proportionality k is equal to the slope m

Let

$A(0,0)$ ------> the line passes through the origin

$B(2,10)$

Find the value of k------> substitute the value of x and y

$y/x=k$ -----> $k=10/2=5$

$C(4,20)$

Find the value of k------> substitute the value of x and y

$y/x=k$ -----> $k=20/4=5$

$D(6,30)$

Find the value of k------> substitute the value of x and y

$y/x=k$ -----> $k=30/6=5$

$E(8,40)$

Find the value of k------> substitute the value of x and y

$y/x=k$ -----> $k=40/8=5$

The value of k is equal in all the points of the table and the line passes through the origin

therefore

The function represents a direct variation

the equation of the direct variation is equal to

$f(x)=5x$

4 0

3 years ago

Read 2 more answers

Kerry’s grandmother, Mrs. Reynoso, is helping Kerry pay for guitar lessons. She has set up a special savings account to pay for

s2008m [1.1K]

Answer:

Month 5 is when it will be at $100

I hope this helps!

Step-by-step explanation:

x---0-----1-----2-----3----4-----5

y-300-260-220-180-140-100

y=40x+300

5 0

2 years ago

Joseph reaches into a bag with 5 red marbles, 3 yellow marbles, and 2 green marbles, and randomly selects one. Then, he puts the

snow_tiger [21]

I think it is 3:10 but im not really sure

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3 years ago

Please help!!! Will give brainly!! 50 points

AleksAgata [21]

2. Angle Addition Postulate as they are adding both angles

3. 60 + 40 = m <ABC because it's a substitution

4. 100 = m <ABC as it is simplified already

5. Definition of obtuse angle

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3 years ago

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Sam has a collection of stamps. For every 18 dinosaur stamps, he has 12 airplane stamps. Sam wrote a ratio for dinosaur stamps t

const2013 [10]

Answer:

Given the ratio for dinosaur stamps to airplane stamp, the correct ratio is 18 : 12

Step-by-step explanation:

Dinosaur stamps = 18

Airplane stamps = 12

John wrote:

ratio of dinosaur stamps to airplane stamps = 12 to 18

Correct ratio:

ratio of dinosaur stamps to airplane stamps = 18 : 12

= 18/12

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2 years ago