The answer can be explained like this
Step-by-step explanation:
Here,X=6 Y=5
12+X=12+6=18
3x+y=3×6+5=23
4y-10=4×5-10=10
1/2xy=1/2×6×5=30/2=15
Answer:

Step-by-step explanation:
Given
Let R represents rows and C represents Columns
When R = 8, C = 25
When R = 10, C = 20
Required
Given that there exist an inverse variation, determine the constant of proportionality;
We start by representing the variation;

Convert proportion to an equation

Where k is the constant of proportion;

Multiply both sides by C

Reorder

<em>When R = 8, C = 25;</em>
<em>The equation </em>
<em>becomes</em>


<em>When R = 10, C = 20;</em>
<em>The equation </em>
<em>becomes</em>


Hence, the concept of proportionality is 200
9514 1404 393
Answer:
11 1/9%
Step-by-step explanation:
1/9 × 100% = (100/9)% = (11 1/9)%
Answer:
Step-by-step explanation:
The last one
I hope I helped you.
Answer:
2,-2
Step-by-step explanation: