2 years ago

4. The function A(r) = πr² gives the area of a circle with radius r. What is the context domain?

Mathematics

1 answer:

Tems11 [23]2 years ago

5 0

Answer:

Domain = [0 , +∞)

Step-by-step explanation:

since r is the radius of a circle

Then

r must be a positive number.

Then

r ≥ 0

NOTE : if r = 0 ,then the circle reduces to a point .

You might be interested in

Palm Bay Magnet High School 2019-20

Elenna [48]

Answer:

$y=-4x-15$

Step-by-step explanation:

[in picture]

5 0

4 years ago

What are the zeros of the function f(x)=x2+12x+38

Artemon [7]

Answer:

The zero would be -2.714 (x-intercept)

6 0

3 years ago

Tomas makes balloon sculpture at a circus. In 180 minutes he uses 252 balloons to make balloon sculptures. How many minutes does

Mademuasel [1]

Answer:

0.714 mins

Step-by-step explanation:

by using the rule of three:

180 mins----->252 ballons

x----------------1 ballon=0.714 mins

4 0

3 years ago

If a 10-foot piece of electrical tape has five pieces that are each 1.25 feet cut from it, what is the new length of the tape?

BartSMP [9]

5 pieces X 1.25 = 6.25

10-6.25 = 3.75 is the new length

3 0

3 years ago

If one person runs 8.1 miles per hour in one direction and another with a speed of 6.3 in an other direction how many hours woul

djverab [1.8K]

Answer:

1.4 hours

Step-by-step explanation:

Runner A:

Speed = 8.1 mph

Time, = t

Runner B :

Speed = 6.3 mph

Time, = t

Distance apart = 20.16 miles

Distance = speed * time

Distance of Runner A + Distance of runner B = distance apart

8.1t + 6.3t = 20.16

14.4t = 20.16

t = 20.16 / 14.4

t = 1.4 hours

Number of hours, t = 1.4 hours

7 0

3 years ago