Answer:
Step-by-step explanation:
f(x)=(x+2)(x-7)=x²-5x-14
Answer: 31.5
Step-by-step explanation:
9*3.5=31.5
Hopefully this is what they meant
Answer:
Answer
Step-by-step explanation:
(a) B ⊄ A (b) C ⊂ A (c) B ⊄ C (d) ∅ ⊂ B (empty set is an element of any set)
(e) C ⊂ C (reflexitivity).
Answer:
59
Step-by-step explanation:
We know that all the angles must add up to 180
so we have
38+2b-20+b-15=180
solve for b
3b+3=180
3b=177
b=59
