Hi! The answer would be D. It is basically just asking for a whole number. 2.6 is a decimal, C is negative and a decimal. Hope this helped!
Answer:
A. 
Step-by-step explanation:
Applying the leg rule which is:

Hypotenuse = 4 + 8 = 12
Leg = x
Part = 8
Plug in the values

Cross multiply





For this case we have that by definition, the slope of a line is given by:

Where:
and
are two points through which the line passes.
According to the figure we have to, the line goes through:

Substituting we have:

Thus, the slope of the line is -1.
Answer:

Answer:
50 marbles
Step-by-step explanation: The difference between the ratio of the red and green marbles is 4 units and the number value is 20 so its safe to say that 4 units is equal to 20 and thus one unit is 5 and because of the fact that there is a total of 10 units of marbles in the box according to the ratio, just multiply 5 and 10 which you get 50.
4 units = 20
1 unit = 20÷4 = 5
Total = 10 units
10 unit = 5 ×10 = 50
Ans : 50 marbles