Answer: -3
Step-by-step explanation:
Answer:
78.5
Step-by-step explanation:
the formula is C = 2π r
we know the diameter is 24
half of the diameter is radius
24 divided by 2 is 12
substitute what we know
C=2 times 3.14 times 12= 75.36
The closest option is 78.5
The answer is not completely the same because pi is not always exact
Answer:
{x = -1 + √13 , x = -1 - √13}
Step-by-step explanation:
<u><em>Completing the square</em></u>:
f(x) = x² + 2x - 12
= x² + 2x + 1 - 1 - 12
= (x² + 2x + 1) - 1 - 12
= (x + 1)² - 13
<u><em>Solving</em></u>:
f(x) = 0
⇔ (x + 1)² - 13 = 0
⇔ (x + 1)² = 13
⇔ x + 1 = √13 or x + 1 = -√13
⇔ x = -1 + √13 or x = -1 - √13
The answer to it is -3.2 or -3 1/5
