All categories

3 years ago

PLEASE I NEED HELP ON THIS QUESTION..

Mathematics

2 answers:

Olenka [21]3 years ago

4 0

$\mathfrak{\huge{\orange{\underline{\underline{AnSwEr:-}}}}}$

Actually Welcome to the Concept of the circles.

It's is universally proven that ratio of circumference and diameter is always π

hence the decimal value is π = 3.14

===> answer is option B.) 3.14

Tems11 [23]3 years ago

3 0

The correct answer is B

You might be interested in

The second hand of an analog clock completes an entire rotation in 60 seconds, and the length of the seconds hand is 8 inches. a

g100num [7]

Circumcerence = distance travelled in one full rotation = 2 x π x 8 = 16π

for 2 minutes and 15 seconds,
multiply 16π by 2.25 as 2 minutes is twice the distance of one rotation and 15 seconds is a quarter more

therefore answer is 36π = 113.1 inches

3 0

4 years ago

Use Wolframalpha to find the exact volume of the solid obtained by rotating about x = [pi]/2 the region bounded by y = sin^2x, y

Alex777 [14]

Answer:

Step-by-step explanation:

Here the region between two curves is rotated about a vertical line.

The functions are

$y = sin^2x, \\y = sin^4x, \\x in [0,[pi]/2].$

Intersecting points are x=0 and x =pi/2

Since rotated about x = pi/2 we get

using cylindrical shell method

Volume = $2\pi rh\\=2\pi \int\limits^\frac{\pi}{2} _0 {xy} \, dx \\=2\pi \int\limits^\frac{\pi}{2} _0 (x+\frac{\pi}{2} )(sin^2 x -sin^4 x) dx\\$

From wolfram alpha we find that

Volume= $2\pi (\frac{3\pi^2 }{64)} =\frac{6\pi^3}{64}$

4 0

4 years ago

A restaurant owner estimates that his restaurant will serve 430 customers the first week it is open. The actual number of custom

densk [106]

Well, what is 30/400 as a percentage?

4 0

4 years ago

5 times the difference of a number subtracted from 10 is 40. What is the number?

postnew [5]

5(n-10)=40 is the equation
5n-50=40 solve for n
5n = 90
n =18

hope this helps . give me brainliest id appreciate it !

8 0

4 years ago

Plz help on 1,3,4 thx!

Natalka [10]

1. IQR = Q3 - Q1 = 35 - 20 = 15

A. 15

3. The ages include 20 and 25 so A and C are out, and the ages are between the two ages

B. a >= 20 and a <= 25

4. With the addition of 30, there are now 14 dots. Therefore, the median will be the mean of the 7th and 8th dots from least to greatest on the number line. In this case, it would still be 22.

C. The median would stay the same.

6 0

3 years ago