Answer:
6.928 or 6.93
Step-by-step explanation:
\sqrt{8^{2}-4^{2}}
Answer:
200
Step-by-step explanation:
I did it in a different way I think but this is how I did it. ._.
100÷2=50
50×4=200
Answer:
2775 ways
Step-by-step explanation:
We have been given the case to choose exactly two tails when flipped 75 times means 
Since,
is equal to
Here n =75, r=2 substituting the values we will get


After simplification we will get 
Cancel out the common term that is 73! we will get
after more simplification we will get 
Finally, we will get 
Answer:
$41.25
Step-by-step explanation:
We can use this formula to solve this problem:
s
=
p
−
(
d
×
p
)
Where:
s
is the sales price: what we are solving for in this problem.
p
is the original price: $55 for this problem.
d
is the discount rate: 25% for this problem. "Percent" or "%" means "out of 100" or "per 100", Therefore 25% can be written as
25
100
.
Substituting and calculating
s
gives:
s
=
$
55
−
(
25
100
×
$
55
)
s
=
$
55
−
$
1375
100
s
=
$
55
−
$
13.75
s
=
$
41.25