Answer:
18:162
Step-by-step explanation:
1:9
1+9=10
(1×180)÷10= 18
(9×180)÷10=162
6% of $22 = 1.32
22 + 1.32 = 23.32 (cost of meal with tax)
20% of 23.32 = 4.66
23.32 + 4.66 = 27.98
Total cost = $27.98
1/6 for getting a 2 on the dice
1/2 for getting a head
1/6 * 1/2
1/12
Answer:
b = 7, c = -3 and a = 1
Step-by-step explanation:
So I'm assuming you know the quadratic formula, x=-b +- root (b^2-4ac)/2a
so knowing this, it is given that b^2 - 4ac = 61
it is also given 2a = 2 (the bottom of the fraction) which means a =1
and the -b = -7 (the start of the expression), which means b = 7
now we have b = 7, and a = 1
now we can sub it into b^2 - 4 x a x c = 61
b^2 is 7 x 7 = 49
4 x a x c = 4c
so we have 49-4c=61
-4c = 61-49
-4c = 12
c = -3
therefore we have b = 7, c = -3 and a = 1