ANSWER
The radius is 4
EXPLANATION
The given equation is:
We complete the square to get the expression in standard form:
We factor using perfect squares to get:
This implies that,
Comparing to
The radius is r=4
8y + 4 = -3x in standard form is 3x + 8y = -4
The factors of the quadratic function are x - 2 and x + 5.
This means the roots of the function are x = 2 and x = -5 and the graph must cross the x-axis at these points
So, we can find the graph by checking which of them is cross the x-axis at points x =2 and x=- 5.
The graph A is crossing the x-axis at the said points.
So the answer to this question is option A
now, we know they're doubling every year, so the rate of growth is 100%, so whatever amount, + 100% is just double that much, therefore,
Answer:
- Real numbers are Closed under multiplication.
- Irrational numbers are Not Closed under division.
- Integers are Closed under subtraction.
- Positive rational numbers are Closed under addition.
Step-by-step explanation:
a) The product of any two real numbers is a real number, so the set is closed.
b) In some cases, the quotient may be rational. (√18)/(√2) = 3, for example. So, the set is not closed.
c) The difference of any two integers is an integer, so the set is closed.
d) The sum of any two positive rational numbers is a postive rational number, so the set is closed.