Interest = Pin = principal * interest rate * number of years
Let interest rate be i, then
600*i*2+150*i*4=90
1200i+600i = 90
i=90/(1200+600)=90/1800=1/20=0.05 or 5%
Answer:
-3
-12
-5
Step-by-step explanation:
A negative number with another negative symbol put onto it is positive because both negative symbols cancel each other out
So -(-3) = 3
-(-12) = 12
-(-5) = 5
Answer:
estepra gerue
Step-by-step explanation:
Answer:
9
Step-by-step explanation:
2 raised by 3 = 8
4 * 2 = 8
8 + 8 = 16
16 - 7 = 9
Answer: 11/243
Step-by-step explanation:
Each question has 3 options: 2 incorrect and 1 correct
Probability P(correct guessing) = 1/3
P(wrong guessing) = 2/3
Probability P(4 answers correct) = 5C4 × (1/3)^4 ×(2/3)^1
Probability P(5 answers guessed correctly) =5C5 ×( 1/3)5
Therefore Probability P(4 or more answers correct) = P(4) + P(5) = (10/3^5) +( 1/3^5)
P(4 or more correct answers) = 11/243