The missing angle is 25. A triangle is always equal to 180° so you would subtract your know angles from 180 to find the missing angle
75+80+x=180 would be the equation
Formula for the terms shows that it starts at 6 and decreases by 4
6, 2, -2. -6, ...
4th term is -6
you can also just put in n = 4 for the 4th term and solve for it.
Answer:
65
Step-by-step explanation:
13*5=65
13 is a prime number and so is 5
13+5=18
18 is a factor of 36
the answer is 65
Answer:
16
Step-by-step explanation:
Each term in the second factor is multiplied by each term in the first factor, that is
y(y² + 4y + 16) - 4x(y² + 4y + 16) ← distribute both parenthesis
= y³ + 4y² + 16y - 4xy² - 16xy - 64x
Compare - axy to - 16xy ⇒ a = 16
