The answer is (C). All sides and angles of the square is equal. Its diagonals bisect each other and meet at 90°. If two lines are said to meet at 90°, these lines are perpendicular to each other. Therefore, the diagonals of a square is perpendicular to each other
Since all the sides add up to 10x+2, that means that 10x-2-<side1>-<side2>=<side3>. Plugging it in, we have 10x-2-5x-(2x+9)=side3, and 5x-2-(2x+9)=side3, then expanding it to 5x-2-2x-9=3x-11=side3
Q19.Sunday equals 351 so that plus a hundred equals 451 plus 50 equals 501 so now we round it to closest number wensday at 506
q20.so Thursday and friday added equal 774
q21.Anna's report is 830 Joe's is 670 it would equal 160 more than Joe's so problem is 830 minus 670 equals 160 that is how much more Anna is than joe
q22.ok so week on equals 486 rounded equals 490 next week she got 254 rounded 250 she wanted to earn 545 so if we take 490 and add 50 equals 540 then add 200 and then it's 740 so we now know are answer is near that so I'm going to add them both now 486 plus 254 equals 740 ironically the exact same amount.
q23.ok so 972 minus 468 equals 504 that is how many inches he is bigger than the other one
if you need anymore help just let me know mate
Answer: C. 
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Explanation:
The x intercept always occurs when y = 0.
Use the unit circle to determine that 
when 
So if 
, then we have
which shows us that 
is the location of one of the infinitely many x intercepts for this function.
Answer:
x=-1
Step-by-step explanation:
3/x - 5 = 10/x +2
add 5 to each side
3/x = 10/x +7
subtract 10/x from each side
-7/x = 7
multiply by x on each side
-7 = 7x
divide by 7
-7/7 = x
-1=x
