Answer:
160°
Step-by-step explanation:
Minor Arc NR is equal to the measure of its central angle, S.
S and 20 are supplementary angles, so they add up to 180.
So, s +20 =180
S = 160, so NR = 160 as well
Answer:
7290
Step-by-step explanation:
Put 5 in the formula and evaluate.
a(5) = 90·3^(5-1) = 90·81 = 7290
There will be 7290 bacteria at the beginning of hour 5.
Answer:
(D)
Step-by-step explanation:
A.
which is a negative number, thus Option A is incorrect.
B.
which is a negative number, thus Option B is incorrect.
C.
which is a negative number, thus option C is incorrect.
D.
which is a positive number, thus option D is correct.