Suppose the one's digit is x, the ten's digit is y. the original number is 10y+x, the reversed number is 10x+y
x+y=13
(10x+y)=(10y+x)-9 =>9y-9x=9 =>y-x=1
Add the two equation to solve: 2y=14 =>y=7
x=13-7=6
the original number is 76.
0.15 as fraction or multiply 3/8 and 2/5
Answer:
He can afford 5 large cheese pizzas.
Step-by-step explanation:
$40 ÷ $7.50 = 5.333333
You cannot buy 1/3 of a pizza, so you round the number to a whole number.
5.333333 ----> 5
5 large cheese pizzas
Answer: ![t_{n}=-15+9(n-1)](https://tex.z-dn.net/?f=t_%7Bn%7D%3D-15%2B9%28n-1%29)
Step-by-step explanation:
The formula for finding the nth term of an arithmetic sequence is given as:
![t_{n}=a+(n-1)d](https://tex.z-dn.net/?f=t_%7Bn%7D%3Da%2B%28n-1%29d)
first term = -15
common difference = -6 - (-15) = 9
number of terms
substituting into the formula , we have :
![t_{n} = -15+(n-1)9](https://tex.z-dn.net/?f=t_%7Bn%7D%20%3D%20-15%2B%28n-1%299)
![t_{n}=-15+9(n-1)](https://tex.z-dn.net/?f=t_%7Bn%7D%3D-15%2B9%28n-1%29)
Answer:
(a)The amount of fuel in dollars = $1.62
(b)The rate equivalent to in U.S. dollars per gallon = $ 1.45
Step-by-step explanation:
Reid will be driving through Spain this summer. He did some research and knows that the average price of gas in Spain is approximately 1.12 euros per liter.
1 USD = 0.69 euros
We have to find the money that we should pay in order to get the same amount of fuel.
1 euro = ![\frac{1}{0.69}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B0.69%7D)
1 euro = $1.45
So 1.12 euros = 1.12
1.45 = $1.62
(a)The amount of fuel in dollars = $1.62
(b)The rate equivalent to in U.S. dollars per gallon = $ 1.45