Answer:
21x^2 - 23x - 20 = 0
Step-by-step explanation:
Let t = number of terriers
1 x t = number of total terriers
5 x t = number of yellow labs
1t + 5t = 6t
6t = total number of dogs in the park
6t = 18
t = 18/6
t = 3
there are 3 terriers
Answer:
5.80% probability that exactly 1 resume will be from females.
Step-by-step explanation:
For each resume received by the corporation, there are only two possible outcomes. Either they are from a female, or they are not. The probability of a resume received being from a female is independent from other resumes. So we use the binomial probability distribution to solve this question.
Binomial probability distribution
The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

In which
is the number of different combinations of x objects from a set of n elements, given by the following formula.

And p is the probability of X happening.
22% of all resumes received by a corporation for a management position are from females.
This means that 
18 resumes will be received tomorrow.
This means that 
What is the probability that exactly 1 resume will be from females?
This is P(X = 1).


5.80% probability that exactly 1 resume will be from females.
Answer: she has spent $60 dollars and she has 180 more to go
Step-by-step explanation: