Answer:
21
Step-by-step explanation:
3 times 7 is 21
7 times 2 is 14 and 3 doesn't go into that!
7 times 1 is 7 and 3 doesn't go into that either!
Can I have brainliest please, if not that's ok. :)
Answer:
1 /4
Step-by-step explanation:
Given that :
Let :
P(S) = probability of drawing a spade
Odds in favor of drawing a spade = 1:3 ; this could be interpreted as :
P(drawing a spade)/P(not drawing a spade) = 1:3
P(S) / P(S') = 1/ 3
P(S') = 1 - P(S)
P(S) / (1 - P(S)) = 1 / 3
Cross multiply :
3P(S) = 1 - P(S)
Collect like terms
3P(S) + P(S) = 1
4P(S) = 1
P(S) = 1/4
Hence, probability ratio of drawing a spade P(S) = 1/4
$30 because you are taking away 20% of $30 and then adding back that 20%.
Answer:
- 819
Step-by-step explanation:
The sum to n terms of a geometric series is
= 
where a is the first term and r the common ratio
Here a = 1 and r = - 4 ÷ 1 = - 4, thus
= 
= 
= 
= - 819
Answer: divide both numbers
Step-by-step explanation:
20.95
