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2 years ago

The diameter of a circle is 16 miles. What is the area?

Mathematics

1 answer:

joja [24]2 years ago

5 0

Answer:

201 mi^2

Step-by-step explanation:

A= (pi)(r^2)

A = (3.14)(64) = 201 mi^2

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What is the best method to use to determine probabilities that are unknown?

marishachu [46]

I this k the one would be B

4 0

3 years ago

Round the<br> nearest hundreds<br> Place<br> 52% of 210

Ket [755]

Answer:

109.2

Step-by-step explanation:

Of means multiply

52% * 210

Change to decimal form

.52 * 210

109.2

4 0

3 years ago

Read 2 more answers

. Find sets of parametric equations and symmetric equations of the line through the point parallel to the given vector or line (

omeli [17]

Answer:

a) L(x,y,z) = (-4,0,2)+(2,8,-7)*t

b) (2-z)/7= y/8=(x+4)/2 (option B)

Step-by-step explanation:

the parametric equation of the line passing through the point P₀= (-4,0,2) and parallel to the vector v=2i + 8j - 7k is

L(x,y,z)=P₀+v*t

therefore

L(x,y,z) = (-4,0,2)+(2,8,-7)*t

x=x₀+vx*t = -4 + 2*t

y=y₀+vy*t = 8*t

z=z₀+vz*t = 2 -7*t

solving for t in the 3 equations we get the symmetric equation of the line:

(2-z)/7= y/8=(x+4)/2

thus the option B is correct

6 0

4 years ago

Read 2 more answers

What is the constant rate of 2 mi and 35 minutes

Yuliya22 [10]

Answer:

<h3>0.057 miles per minute</h3>

Step-by-step explanation:

2 miles and 35 minutes

= 2 miles / 35 minutes

= 0.057 miles per minute

6 0

3 years ago

A police car's siren operates at a frequency of 2,000 Hz. What frequency would a stationary listener observe if the police car i

SpyIntel [72]

we can use formula

$f_L=f_s(\frac{v_a-v_p}{v_a+v_p} )$

where

fL is listener frequency

fs is siren frequency

va is the speed of sound in air

vs is police car speed

so, we have

$f_s=2000Hz$

$v_a=345m/s$

$v_p=65mph$

now, we can change it into m/s

$v_p=65*\frac{1609}{3600}m/s$

$v_p=29.05139m/s$

now, we can plug it

$f_L=2000(\frac{345-29.05139}{345+29.05139} )$

$f_L=1689.33263Hz$ ..............Answer

3 0

3 years ago