$10x+y-(10y+x)=36\\
10x+y-10y-x=36\\
9x-9y=36\\
x-y=4\\\\
x,y\in\{1,2,3,4,5,6,7,8,9\}\\
\Downarrow\\
x=5,y=1\\
x=6,y=2\\
x=7,y=3\\
x=8,y=4\\
x=9,y=5


$

There are 5 such numbers - 51,62,73,84,95

6 0

3 years ago

Please help!!!

stiv31 [10]

Answer:

Step-by-step explanation:

1. Percent means out of 100

8% = 8/100

.08

2. Is means equals and of means multiply

W = 48% *180

W = .48 *180

W =86.4

3. Is means equals and of means multiply

80 = 125% * W

80 = 1.25 W

Divide each side by 1.25

80/1.25 = W

6 0

3 years ago

Is the part is 75 and the whole is 500 what is the percent

laiz [17]

Answer:

If the part is 75 and the whole number is 500 the percent would be 15%

Step-by-step explanation:

3 0

3 years ago