Answer:

Step-by-step explanation:
Given

Required
Probability of two people having dog
First, we have to convert the given parameter to decimal


Let P(Dogs) represent the required probability;
This is calculated as thus;
<em>P(Dogs) = Probability of first person having a dog * Probability of second person having a dog</em>
<em />




<em>Hence, the probability of 2 people having a dog is </em>
<em />
Answer:
the first line
Step-by-step explanation:
because 1.75 is almost to the number 2
hope this helps
Answer:
9
Step-by-step explanation:
Using the identity
(a + b + c)² = a² + b² + c² + 2(ab + bc + ca)
Subtract 2(ab + bc + ca) from both sides, then
a² + b² + c² = (a + b + c)² - 2(ab + bc + ca) = 7² - 2(20) = 49 - 40 = 9
Answer: Im pretty sure its 18
Step-by-step explanation:
Sorry, i dont know that one. i wish i could help ya