ANSWER
The area of square ABCD is
EXPLANATION
The area of square ABCD is the square of the length of one side.
That is the area of ABCD is |AD|²
From Pythagoras theorem,
We can read from the graph that, each box is one unit.
This implies that,
Therefore the area of square ABCD is 25 square units.
The correct answer is option C.
Part (1):
8/z = 10/25 = 6/15
This can be simplified as:
8/z = 2/5
Use cross multiplication as follows:
8*5 = 2*z
40 = 2z
z = 40/2 = 20
Part (2):
<span>12/36 = 14/42 = 8/t
This can be simplified into:
8/t = 1/3
Use cross multiplication as follows:
3*8 = t*1
t = 24</span>
AGF is 90
90-32 =58
58 = GXF
58 + 32 + 40 = 130
There’s no attachment, i can try to help tho what does the problem look like
Answer: B
Number on the left: x-value
Number on the right: y-value
If there are 2 y-values for one x-value it is NOT considered a function.
For instance in the answer:
(2,3), (2,4), (3,3), (3,4)
You can clearly see that the x-values (2 & 3) repeat more than once; therefore, it is NOT a function.
On the other hand if you have 2 DIFFERENT x-values for the same y-value it IS A FUNCTION.
For ex D: (2,4), (3,4), (5,4), (6,4)
As you can see there are 4 DIFFERENT x-values with same y-value; therefore it is A FUNCTION
To make it easier:
If x-values appear more than once = NOT A FUNCTION
If x-values appear only ONCE = FUNCTION
Remember: y-values are ALLOWED to repeat
I hope this helps. If you have any questions please let me know in the comments.
