Use the formula for secants in a circle. The formula for us in our situation is

. Work within the parenthesis first to get

. Do the multiplication now to get

. Take the square root of that to get x = 242,967.076 miles or, according to how your answer is to be stated, 243,000 miles.
Answer:
3x^2 + 10x - 8 = 0.
Step-by-step explanation:
In factor form it would be:
(x + 4)(3x - 2) = 0 (because x + 4 = 0 gives x = -4 and 3x - 2 = 0 gives x = 2/3);
Now change to standard form:
= 3x^2 - 2x + 12x - 8 =0
= 3x^2 + 10x - 8 = 0.
Probability a gets a head = 1/2
.. .. .. b .. .. ... .. = P(a gets tail) * 1/2 = 1/2 * 1/2 = 1/4
.. ... . .. c .. .. .. .. . = P(and and b gets tail) * 1/2 = 1/4 * 1/2 = 1/8
Answer:
The answer to |4a|=20 is a=5 or a=-5.
Step-by-step explanation: