D. X=18
Exp:
16-X=-2
-16 -16
-X=-18
X=18
Answer:
Step-by-step explanation:
It is an arithmetic sequence with common difference d = 30.
a₂₀ = a₁ + (20-1)d = -8 + 19·30 = 562
Answer:
Total number of virus after 7yrs= 247484.7 virus
Step-by-step explanation:
Total number of virus after 7yrs = 2573(1+0.92)⁷ = 247484.7 virus
Answer:
53°
Step-by-step explanation:
i will use ∩ to represent arc since there is no arc sign
if ∩EF = 34, then ∡EFC = 34
think of EFC as an angle in the larger circle
since EFC = 34, ABC = 34 because they are opposite angles and opposite angles are always congruent.
ABD = AB + BD = 19 + 34 = 53
