Answer:
√6 + √2
= --------------
4
Step-by-step explanation:
15° = 45° - 30°
So
cos(15) = cos(45 - 30)
=cos(45) × cos(30) + sin(45) × sin(30)
= 1/√2 × (√3)/2 + 1/√2 × 1/2
(√3) + 1
= --------------
2√2
(√3) + 1 √2
= -------------- x ---------
2√2 √2
√6 + √2
= --------------
4
Answer:
40/3
Step-by-step explanation:
4x -20 = 10x -100 (Distributive Property)
4x -10x = -100 +20 (I swith the numbers so all of them are similar)
-6x= -80 (Divide -6 on both sides)
And you will get 40/3 or 13.3333..
Answer:
{14, -1, -4}
Step-by-step explanation:
Substitute x into, and get y = 14, -1, -4
Answer:
y = 3
Step-by-step explanation:
5y + 6 +3y = 30
5y + 3y = 8y
8y + 6 = 30
-6 -6
8y = 24
24 / 8 = 3
y = 3
