Jeanie completed a 27 mile duathlon (a race that is a combination of running and biking) in exactly 2 hours. she ran an average
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Answer:
The cost of per kilogram of salami is = $9.1
Step-by-step explanation:
Given:
Hailey paid $13 for kg of sliced salami.
To find cost per kilogram of salami.
Solution:
We will apply unitary method to find per kilogram cost of salami.
If kg of salami costs = $13
Then 1 kg of salami will cost in dollars will be =
In order to divide by mixed numbers, we will convert mixed numbers to fractions.
⇒
⇒
In order to divide by fractions we will take reciprocal of divisor and then multiply.
⇒
⇒
⇒
⇒
Thus, cost of per kilogram of salami is = $9.1
<u>Answer-</u>
<u>Solution-</u>
Given expression is
Applying Binomial Theorem
Here,
a = x, b = 2 and n = 4
So,
Expanding the summation