The distance an rc car has traveled during the first 5 seconds of a race can be found using the function where d(t) is the distance of the car (in meters) and t is the number of seconds.

2. what is the average speed of the car for the first 2 seconds of the race?

a
7.5 m/s
b
10.3 m/s
c
12.8 m/s
d
18 m/s

answer:

d

step-by-step explanation:

answer:

the answer is d 18 m/s

The dog pen is 12 square meters than the goat pen

Step-by-step explanation:

Area of the rectangular pen for the goats:

The perimeter of the pen is 20 meters. And a barn is used for one side length

so

L + 2B = 20

L = 20 -2B

20 -4B  

20 = 4B

B = 5

Now ,

L = 20-2B

L =20 -2(5)

L = 20 -10

L = 10

So area of the rectangular pen for goats

=> 10 x 5

=> 50 square metres

Area of the rectangular pen for the dogs:

The perimeter of the pen is 24 meters. And a barn is used for one side length

so

Now ,

Area of the rectangular pen for dogs

=>

=>

=> 72 square metres

Area of the rectangular pen for the goats - Area of the rectangular pen for the dogs

=>72 - 50

=> 12 square meters