Inifnite sets have no end
1. empty set doesn't go on forever. it doesn't even start, so no
2. nope, only about 999,999,999 numbers in that set
3. yes, this is all numbers from 1,2,3, to inifnity, so this is an infinite set
answer is 3rd option
Answer: 51°F
Step-by-step explanation:
From the question, we are informed that the average daily temperature in Denton rose from -8°F in January to 43°F in March.
Let the rise in average daily temperature from January to March be calculated as:
= 43°F - (-8°F)
= 43°F + 8°F
= 51°F
Answer:
x = - 4, x = - 3
Step-by-step explanation:
To find the zeros equate f(x) to zero, that is
x² + 7x + 12 = 0
To factorise the quadratic
Consider the factors of the constant term (+ 12) which sum to give the coefficient of the x- term (+ 7)
The factors are + 4 and + 3, since
4 × 3 = 12 and 4 + 3 = 7, hence
(x + 4)(x + 3) = 0 ← in factored form
Equate each factor to zero and solve for x
x + 4 = 0 ⇒ x = - 4
x + 3 = 0 ⇒ x = - 3