Answer:
D
Step-by-step explanation:
x² - 81 ← is a difference of squares and factors in general as
a² - b² = (a + b)(a - b)
Here a = x and b = 9, thus
x² - 81 = (x + 9)(x - 9) → D
Answer:
20 greater than or equal to 4x + 7
Step-by-step explanation:
hope this helps!
Answer:
24/36
Step-by-step explanation:
Do 36 divided by 3 which is 12 then multiply 12 by 2!
I hope this helps and have a great day! :)
Answer:
not enough info
Step-by-step explanation:
Answer:25 and 55
Step-by-step explanation:
if you double 25 you get 50 add five and you get 55.
55+25=80