Answer:
y = 20/3
Step-by-step explanation:
4y + 2y + 10 = 50
Combine like terms on the left side.
6y + 10 = 50
Subtract 10 from both sides.
6y = 40
Divide both sides by 6.
y = 40/6
Reduce the fraction by dividing the numerator and denominator by 2.
y = 20/3
200/10= 20 20x4=80, 80 people
The correct answer is 8000
The nature of roots of a quadratic equation can be determined from its discriminant.
Discriminant = b² - 4ac
b = coefficient of x term = 2
a = coefficient of squared term = 2
c = constant = 4
So,
Discriminant = 4 - 4(2)(4) = -28
Since the discriminant is negative, the two roots of the given equation will be complex .
Therefore, the answer to this question is option B
Answer:
The domain is all real numbers
Step-by-step explanation:
we have
This is a exponential function of the form
where
a is the initial value
b is the base
r is the rate
b=(1+r)
In this problem we have
a=-5/6
b=3/5=0.6
r=0.6-1=-0.4=-40%
see the attached figure to better understand the problem
The domain is the interval -----> (-∞,∞)
The domain is all real numbers
The range is the interval ----> (-∞,0)
The range is all real numbers less than zero