Answer:
A
Step-by-step explanation:
area of a circle is pi*r^2
pi*144 is 452.389342, so A
Answer:
-4 ± 2√6
Step-by-step explanation:
Rewritten in standard quadratic form, x^2+8x-2=18 becomes x^2 + 8x - 20 = 0.
Here the quadratic coefficients are a = 1, b = 8 and c = -20 and so the discriminant is b^2 - 4ac, or 8^2 - 4(1)(-20), or 96.
Because the discriminant is positive, we know that this quadratic has two different real roots. These roots are:
-b ± √(b² - 4ac)
x = -------------------------
2a
which in this case comes out to:
-8 ± √96 -8 ± 4√6
x = ------------------ = ------------------- = -4 ± 2√6
2 2
Answer:
the median would be 3
Step-by-step explanation:
Solution:
Let the cumulative costs of the plans will be equal after x months.
Then we can write
Hence after 10/29th Month cost will be equal.
and that cost
$
Answer:
x = -7/5
<em>or x = -1.4</em>
Step-by-step explanation:
2/10 - 4/5 = -3/5
-3/5 * 7 = -21/5
-21/5 ÷ 3 = -7/5
