Astudy was conducted of the trend in the design of social robots. in a random sample of 110 social robots, 65 were built with legs only, 20 were built with wheels only, 10 were built with both legs and wheels, and 15 were built with neither legs nor wheels. use the rule of complements to find the probability that a randomly selected social robot is designed with legs or without wheels.

The probability that a randomly selected social robot is designed with legs or without wheels is 0.72

Step-by-step explanation:

The Complement Rule states that the sum of the probabilities of an event and its complement must equal 1. To get the probability  equally likely  we use the following formula

P=# of possibilities that meet the condition / #of equally likely possibilities.

Our condition is that a randomly selected social robot is designed with legs or without wheels. Then,  the data that meet my condition is  65 robots were built with legs only +15 robots were built with neither legs nor wheels.

#of equally likely possibilities is the total number of robots

P=# of possibilities that meet the condition / #of equally likely possibilities.

P= (65+15)/110

P= 80/110=0,7272

hope this !

step-by-step explanation:

d = distance between moon and sun, which in this problem is the hypotenuse of a right triangle.  

the distance y is the side opposite to angle x in the right triangle.   use the definition of the sine function from basic trigonometry.

sin(x) = y/d ⇒

d = y/sin(x)

step-by-step explanation:

what grade level is this? need to know so i can look in my old textbooks!