A^-b is the same as 1/a^b.
When there is a negative power, place the number and power over 1.
a^b/a^c = a^(b-c).
c is a negative power, because it is being divided, and is underneath b, which is a positive (and so it stays in the numerator).
a^c/b^c = (a/b)^c
Inside this one, the power of c is distributed to all numbers inside the parenthesis, in this case a and b.
hope this helps
Answer:
1. Naomi spends more
2. Naomi spends $0.59 more
3. total cost is $27.98
4. with 20 dollars Naomi gets $5.72 change back
5. with 15 dollars Demetrius will get $1.30 change back
Step-by-step explanation:
Naomi's total cost:$14.28
0.39+0.79+0.59+(0.79x3)+(0.79x3)+0.39+0.39+6.99=14.28
Demetrius' total cost:$13.70
(0.79x5)+0.79+0.79+(0.59x3)+(0.59x5)+0.59+0.89+0.59+0.59+0.79=13.7
Answer:
40 cars
Step-by-step explanation:
The total percentage of Ariana's car collection should be = 100%
35% of the collection = 14
1 percent = 14/35
1 percent is therefore 0.4
To get the total number of cars in Ariana's collection, we multiply 100 by 0.4
= 100 x 0.4 = 40
Therefore the total number of cars in her collection is equal to 40 and this is the answer to the question.
Another way to solve this is by cross multiplication
35% = 14
100% = ?
When we cross multiply we have:
(100x14)/35
= 1400/35
= 40
Thank you!
Answer:
1.3469124e+12
Step-by-step explanation:
sure
