Answer:
hope this will help you
Step-by-step explanation:
Answer:
Option C
Step-by-step explanation:
Use the <u>Pythagorean Theorem</u> to find the unknown side.

<h3>We are given that:</h3>
We need to solve for a.

<em>Option C should be the correct answer.</em>
The mean is not the same thing as median
mean=78+81+85+87=331
mean=331/4=82.75
median is the middle number, but you have a par set of numbers, so your median will be the middle numbers 78,81,85,87 , which are 81+85=166, 166/2=83
83 is your median
(2x/-5x)+x^2
(x(2)/(x(-5))+x^2
(-2/5)+x^2, the x values cancel in numerator and denominator and simplify to -2/5
Answer:
angle 1 = 120 degree
Step-by-step explanation:
75 degree + 45 degree = angle 1 (sum of two opposite interior angles is equal to the exterior angle formed)
120 degree = angle 1