Answer:
2.1 + 2x = 7.5
Step-by-step explanation:
Answer:
(3x - 2)(3x + 2)
Step-by-step explanation:
9x² - 4 ← is a difference of squares and factors in general as
a² - b² = (a - b)(a + b)
Thus
9x² - 4
= (3x)² - 2²
= (3x - 2)(3x + 2) ← in factored form

is a monomial (since it is all connected by multiplication) and since it is in the degree of 2, that makes it a quadratic.
-2 is a constant (since it doesn't have variables) and it is a monomial (since it is all connected by multiplication)
3x-9 is a binomial (since it has two terms, not connected by multiplication) and since it has x in the power of 1, that makes it a linear equation.
Finally,

-6x + 9 is a trinomial (since it has 3 terms connected by either addition or subtraction) and since the degree of the polynomial is 2, that makes it a quadratic.
Answer:C≈75.4cm
d Diameter
24
cm
d
r
r
r
d
d
C
A
Using the formulas
C=2πr
d=2r
Solving forC
C=πd=π·24≈75.39822cm
Step-by-step explanation:
Answer:
I need a picture
Step-by-step explanation: