Assuming BOD and AOC are straight lines.
Area of the rectangle = 4 x ΔAOD
Area of the rectangle = 4 x 10
Area of the rectangle = 40 unit²
Area of ΔABC = 1/2 x 40
Area of ΔABC = 20 unit²
It would be 120.
Look at the first column, 40. It’s basically multiplication and you can just use a calculator.
For example, 40 x 1 = 40,
And if you looks the second column, it’s being multiplied by 2. Which would be 40 x 2, you just have to multiply 3 x 40 which is 120.
Sorry for my english
Answer:

Step-by-step explanation:
{x -4y = −21
{8y - x = 45
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[Plug this back into both equations above to get the x-coordinate of 3]; 
I am joyous to assist you anytime.
Convert 1/5 to a decimal so we can compare two decimals.
1/5= 20/100= 0.20
Then compare 0.2 vs 0.25
0.2<0.25
Final answer: 0.25>(1/5)
Answer:
C. {2.4, 4.8, 6.3, 8.8}
Step-by-step explanation:
You only need to find the first domain value to make the appropriate answer selection.
14.1 = 7x -2.7
16.8 = 7x . . . . . . add 2.7
2.4 = x . . . . . . . . divide by 7
The appropriate choice is ...
C. {2.4, 4.8, 6.3, 8.8}
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In the attachment, we have applied the same "solve for x" steps to each of the range values, confirming our answer choice.