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AlladinOne [14]
2 years ago
5

If the radius of a circle is 15 cm, what is the diameter?

Mathematics
2 answers:
attashe74 [19]2 years ago
5 0
The answer is the second answer, 30 cm 
krok68 [10]2 years ago
3 0
The answer is 30 cm. Radius is half of a diameter.
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Screenshot with answers included A circle has a radius of 1 cm.
lora16 [44]
Area = \pi  r^{2} 
area =  \pi x 1 x 1 = \pi 

Circumference = 2\pi r
Circumference = 2 x \pi x1
Circumference = 2\pi 

The circumference is greater than the area


6 0
3 years ago
Fencing a horse corral carol has 2400 ft of fencing to fence in a rectangular horse corral. (a) find a function that models the
Vanyuwa [196]

Here it is given that the width is x ft and total length of the fence is 2400 ft .

Let the length be y ft

So we have

2(x+y) =2400
\\
x+y=1200
\\
y = 1200 -x

Let A represents area, and area is the product of length and width .

So we get

A = x y

Substituting the value of y, we will get

A = x (1200-x)= 1200x -x^2

Second part

The area is maximum at the vertex, and vertex is

x = - \frac{1200}{2(-1)} = 600 feet

And

y=1200-x = 1200-600 = 600 feet

And that's the required dimensions .

8 0
2 years ago
(4*10^2)(2*10^5) written in scientific notation
Akimi4 [234]
<span>(4*10^2)(2*10^5)
= 8 x 10^7

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8 0
3 years ago
Read 2 more answers
Given a normal distribution with a mean of 128 and a standard deviation of 15, what percentage of values is within the interval
Blababa [14]
E and c
I think I hope it is
7 0
3 years ago
Read 2 more answers
D
Gelneren [198K]

Answer:

General equation of line : y = mx+c   --1

Where m is the slope or unit rate

Table 1)

p    d

1      3

2     6

4     12

d = Number of dollars (i.e.y axis)

p = number of pound(i.e. x axis)

First find the slope

First calculate the slope of given points

m = \frac{y_2-y_1}{x_2-x_1}   ---A

(x_1,y_1)=(1,3)

(x_2,y_2)=(2,6)

Substitute values in A

m = \frac{6-3}{2-1}

m = 3

Thus the unit rate is 3 dollars per pound.

So, It matches the box 1 (Refer the attached figure)

Equation 1 : p=3d

\frac{p}{3}=d

Since p is the x coordinate and d is the y coordinate

On Comparing with 1

m = \frac{1}{3}

Thus the unit rate is \frac{1}{3} dollars per pound

So, It matches the box 2 (Refer the attached figure)

Equation 2 : \frac{1}{3}d=3p

d=9p

Since p is the x coordinate and d is the y coordinate

On Comparing with 1

m =9

Thus the unit rate is 9 dollars per pound

So, It matches the box 3 (Refer the attached figure)

Table 2)

p        d

1/9      1

1         9

2        18

d = Number of dollars (i.e.y axis)

p = number of pound(i.e. x axis)

(x_1,y_1)=(\frac{1}{9},1)

(x_2,y_2)=(1,9)

Substitute values in A

m = \frac{9-1}{1-\frac{1}{9}}

m = \frac{8}{frac{8}{9}}

m = 9

Thus the unit rate is 9 dollars per pound

So, It matches the box 3 (Refer the attached figure)

3 0
3 years ago
Read 2 more answers
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