i belive that the answer is true
:) hope this helps!
Answer:
-29
Step-by-step explanation:
(-4 + -3) x 2^2 - 1
follow order of operations PEMDAS
Parentheses:
(-4 + -3) x 2^2 - 1
(-7) x 2^2 -1
exponents:
(-7) x 4 - 1
multiplication
-28 - 1
subtraction
-29
Answer:
124°
Step-by-step explanation:
cos X = (11²+7²-16²)/2(11)(7)
= (121+49-256)/154
= -86/154
= -0.5584
X = cos~¹ -0.5584 = 124°
