The answer is Library to Police Station
Answer:
77 red marbles
Step-by-step explanation:
the bag has R and B marbles
P(B)=1/12 = number of blue /total number of marbles
so 1/12=?/84
in the bag must be 84/12=7 marbles that are blue
84-7=77 red marbles
Answer:
The number of people who like winter season is 1000.
Step-by-step explanation:
Event event correspond to a set in the Venn diagram, and we use it to find the percentages.
I am going to say that:
Event A: Like summer season
Event B: Like winter season.
55% like summer season
This means that 
20% like winter season
This means that 
40% don't like both seasons
This means that 100% - 40% = 60% like at least one, which means that 
Proportion who like both:
This is
. The measures are related by the following equation:


Using what we have

750 like both seasons.
This is 15% of the sample. So the total number of people is t, for which:



20% like winter season
Out of 5000. So
0.2*5000 = 1000
The number of people who like winter season is 1000.
Answer:
162
Step-by-step explanation:
Step 1: Define
x⁴ + 9x²
x = -3
Step 2: Substitute and Evaluate
(-3)⁴ + 9(-3)²
81 + 9(9)
81 + 81
162
Ok so the only ones that we know for sure are 4 = 1, 6=8, 7=9 and you can’t really do all that much with 2,3,5 because it’s not as obvious