Answer: Rikshaw bought it for 100. He lost 12% on selling it, so that means he must have sold it for 88. He wants to make 12% profit, so that means he should have sold it at 112.
But we know that he sold it for 2640.
Therefore, if 88 = 2640, 112 would be 2640*112/88 = 3360.
The circle equation is in the format (x – h)² + (y – k)² = r², with the center being at the point (h, k) and the radius being "r".
QUESTION 11.
Equation x²+y²+10x-14y-7 =0 can be rewritten as: x²+10x+25 + y² -14y + 49 -7 - 25 - 49=0
It can be factories as (x + 5)² + (y – 7)² = 9²
Therefore the radius equals 9 and the center is (-5,7)
QUESTION 12.
From equation (x + 4)² + y² = 121
The radius equals √121 = 11 and the center is (-4,0)
QUESTION 13.
As there are missing information in the question, I can't assist. However, you can use the general circle equation (x – h)² + (y – k)² = r² to solve the question.
Finally equations 14 & 15 aren't linear.
Hope that helps you :)
Answer:
False
Step-by-step explanation:
if x=4 the answer would not be -9
x+51 would add up to 55
so it would be : 4+51=55
now if we wanted the answer to be -9 , x would have to be different
-60+51=-9
but in this case x is no -60, it's 4, so no this statement is false.
Answer:
B. -44
Step-by-step explanation:
0.3x-7=0.8x+15
first subtract 0.3x to the other side of 0.8x which will equal
-7=0.5x+15
Then subtract 15 to the othe side of the equal sign which will be
-22=0.5x
Then divide both sides of 0.5( use calculator and put in -22/0.5)
which will be -44
I think that the correct answer to this question is E.) 90 .
