Answer:Your left hand side evaluates to:
m+(−1)mn+(−1)m+(−1)mnp
and your right hand side evaluates to:
m+(−1)mn+(−1)m+np
After eliminating the common terms:
m+(−1)mn from both sides, we are left with showing:
(−1)m+(−1)mnp=(−1)m+np
If p=0, both sides are clearly equal, so assume p≠0, and we can (by cancellation) simply prove:
(−1)(−1)mn=(−1)n.
It should be clear that if m is even, we have equality (both sides are (−1)n), so we are down to the case where m is odd. In this case:
(−1)(−1)mn=(−1)−n=1(−1)n
Multiplying both sides by (−1)n then yields:
1=(−1)2n=[(−1)n]2 which is always true, no matter what n is
Answer: 6.25%
Step-by-step explanation:
50 chicks were purchased at Rs. 60. The total cost of the chicks is:
= 50 * 60
= Rs. 3,000
10 of the chicks died which means the farmer was left with 40 chicks.
These chicks are sold at Rs. 80. Total revenue from the sales are:
= 40 chicks * 80
= Rs. 3,200
The profit is:
= 3,200 - 3,000
= Rs. 200
The percentage is:
= Profit / Revenue
= 200 / 3,200
= 6.25%
Answer:
Melissa wrapped 5 pounds of fudge
Step-by-step explanation:
This is the correct question
Melinda donated fudge for the school bake sale. she wrapped 80 pieces of fudge. each piece of fudge weighed 1 ounce. how many pounds of fudge did melinda wrap?
In this question, we are asked to calculate the pounds of fudge wrapped by Melinda.
Firstly, we need to calculate the total weight of the fudge wrapped by Melinda in pounds.
From the question , we can identify that she wrapped 80 fudge with each of the fudge weighing 1 ounce each.
The total weight of all the fudge wrapped in ounces would be 80 * 1 = 80 ounces
Now, let’s convert this weight in ounces to pounds.
Mathematically, there are 16 ounces in a pound.
Hence, the weight in pounds of 80 ounces would be; 80/16 = 5 pounds
Answer:
11.
Step-by-step explanation:
The scores 60-69 has two people. The scores 70-79 have 9 people. Both are lower or below 80.
Answer:
The original price would be $75
Step-by-step explanation:
I just used a calculator
