Step-by-step explanation:
Hey there!
Here,

While working with them remember some rules;
- (-) + (-) = sign (-) but add them.
- (+) + (+) = sign (+) and add.
- (+) - (+) = subtract but keep sign of greator number.
- (-) -(-) = subtract and keep the sign of greator number.
Likewise in your question,



<em><u>Hope it helps</u></em><em><u>.</u></em><em><u>.</u></em><em><u>.</u></em>
N/d = 15
d= 4 + 3n
d=n/15
n/15=4+3n
n=60+45n
44n=-60
n=-15/11
-15/11 / d = 15
-15/11 = 15d
d=-1/11
15/11 / 1/11. = 15
Answer:
The answer to this question is C.) 70 Days
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Studying probability and statistics will allow you to see the world from an entirely different perspective, since the subjects will give you the tools to model and analyze situations, which involve uncertainty.
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The diagonal of kite intersect at the point p is C. 68°