Answer:
45
Step-by-step explanation:
These work problems are always done in terms of fractions ie if both (Kevin & Eric) took 30mins to mow and Kevin took 1.5hrs (90mins) alone then we can make an equation like below
1/time took for both = 1/time took for Kevin + 1/time took for Eric
1/30 = 1/90+1/x ==> calling time took for Kevin x
solving the above 1/x = 1/30-1/90
1/x=2/90
x=45
Answer: 7/12
Step-by-step explanation:
number of times it landed on A = 6
number of times it landed on B = 21
number of times it landed on C = 9
Total number = 36
The empirical probability that the spinner will land on B is given by
P(B) = number of times it landed on B / Total number , that is
p(B) = 21/36
P(B) =7/12
Note: Empirical means verifiable by observation or experience rather than theory and it was verified that it landed on B 21 times.
Answer:
ddxsxssxsxsszxzxsxsxsxs
Step-by-step explanation:
d
Answer:
m = 
Step-by-step explanation:
Given
= 
( cross- multiply )
6m = 21 ( divide both sides by 6 )
m = 
= ( = 3.5 in decimal form )
x 20 - 2q40 = 8
x 20 - 2q40 = 8
- 2q40 = 8
= 1.018