Answer:
a. 25
Step-by-step explanation:
Sₙ = n/2 * (2 * a₁ + (n-1) * d)
Sₙ = 500 a₁ = -4 d = 2
500 = n/2 * (-8 + (n-1) * 2) = n/2 * (-8 + 2n - 2) = n/2 * (2n - 10) = n² -5n
n² - 5n -500 = 0
(n - 25) (n + 20) = 0
n > 0
n = 25
If the diameter is -3 to 3 then the diameter is 6 so the radius is 3. the equation would be x^2 + y^2 = 9. fyi i found this somewhere else online. i do this a completely different way and am not sure if this is correct.
9514 1404 393
Answer:
$50.89
Step-by-step explanation:
The total cost for one meal is ...
$1.19 +3.19 +2.89 = $7.27
The cost of 7 of these meals will be ...
7 × $7.27 = $50.89
It will cost Austin $50.89 for the seven meals.
8.2 is rounded to the nearest tenth
Answer:
The answer would be B
Step-by-step explanation: