Answer: $80
Step-by-step explanation:
Given: The simple interest generated after 5 years = $20
The rate of interest =5%
In decimal, the rate of interest (r)= 0.05
Let P be the principal amount, which Tahmar invested.
The given formula to find simple interest is
Hence, the principal amount which he invested = $80
Answer:
Calculating this, we find that approximately 14 rats would be expected to die.
Step-by-step explanation:
determine the number of rats expected to die, we need to multiply the probability of dying (1 - 0.6 = 0.4) by the total number of rats injected. Probability of dying = 1 - Probability of living = 1 - 0.6 = 0.4 Number of rats expected to die = Probability of dying * Total number of rats injected = 0.4 * 35
Answer:
21
Step-by-step explanation: 21 because you sub 1.5 in for 12x^2 which is 12(1.5)^2 = 27 minus 6 is 21
Answer:
Step-by-step explanation:
The quadratic formula is x = (-b±)/2a when .
Use direct substitution.
x = (-(-4)±)/2(7)
simplify
x = (4±)/14
x = (4±)/14
factor greatest perfect square out of
x = (4±)/14
simplify
x = (4±)/14
greatest common factor
x = (2(2)±)/7(2)
x = (2)(2±)/7(2)
x = (2±)/7
Possible solutions for quadratic equation
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