Answer:
The negative solution is between -3 and -2
The positive solution is between 11 and 13
Step-by-step explanation:
we have
The formula to solve a quadratic equation of the form 
is equal to
in this problem we have
so
substitute in the formula
therefore
The negative solution is between -3 and -2
The positive solution is between 11 and 13
Answer:7
Step-by-step explanation:
Answer:
10players
Step-by-step explanation:
Using the concept of probability
probability = expected outcome/total outcome
Total outcome s the numbers of players on the team
Given
Total number of trophy won = 7 (expected)
Fraction of those that won = 7/10 (probability)
Substitute
7/10 = 7/total outcome
1/10 = 1/total outcome
Reciprocate both sides
10/1 = total outcome
Swap
Total outcome = 10
Hence the number of players on the team is 10players
Answer:
$159.95
Step-by-step explanation:
Let price of trumphet be defined by 
price of clarinet = $139.95
Number of clarinets sold = 19
Earning through clarinets' sale = 
Total earning of store = $4578.45
Earning through trumphets' sale = 
price of one trumohet = 
price of clarinet = $159.95
