Which is correct, -1 or -7?
599219
you have to solve the ones in the brackets first. so in this instance, 4(-1) = -4.\n\nand then, you solve -4 - 3 = -7
757452
x=-54\nthis one is incorrect.\ny=-2/3\nx=1\ny=54/2.7\ny=-2 ~
821366
2.7*10^-5\n7.041*10^5
1087517
x-(-2 -7)=-1\nx+2x+14=-1\n3x=-15\n\nx = -5\n\ny=-x-7\ny=-(-5) - 7\ny=5-7\n\ny = -2
859504
(x-7)(x-5)\nso x= +7, or +5
862673
since there is no real answer to the square root of any negative number we write i\ni=the square root of -1\n\nif you did the square root of -25 you would get 5i which equals to 5 times the square root of -1
401863
7 - (-8) is 7+8  not 7+9.\n\nThe rule is an even number of negative signs gives a positive.  An odd number of negative signs gives a negative.\n\nThink of a line representing a coordinate axis. Put zero on the line. Then put on 1,2,3, etc. Each of them goes to the right.  Now put on -1, -2, -3, etc. Each of them goes to the left of where zero is.  now, what is the distance from +1 to +3.  It is 2, that is 3-1.  Now what is the distance from 1 to -3.  Count the spaces. It is 4. That is 1- (-3) = 1+3=4.\nFurther what is the distance between -1 and -3. Two spaces 2.  That is -1 - (_3) = -1 +3 = 2.
820030
i is define as sqrt(-1)\ntherfore  i*i=sqrt(-1)*sqrt(-1)= -1
153400
i believe it would be '-9'\nn=5 \n-3-(5-1)(1.5)\n-3-(4*1.5)\n-3-6\n-9
89444
The answer is "i" because there is no number, that when mutliplied by itself, will give you -1.  Think about it: the only possible combination that would make sense is 1 X 1, which equals 1...not -1.
25136
1 = sqrt(1) = sqrt(-1*-1) = sqrt(-1)*sqrt(-1)=i*i = i^2 = -1\nSo 1 = -1.  Add 1 to both sides and 2 = 0.  Divide both sides by 2 and 1 = 0.
959413
numbers ending in -0 or -5
716565
-12.4 = -19.1 + n/-7.9\nThis can also be written as:\n-19.1 + n/-7.9 = -12.4\nn/-7.9 = 19.1 - 12.4\nn/-7.9 = 6.7\nn = (6.7)(-7.9)\nn = -52.93
790356
Hey.  The answers are (-1,0), (1/6,7), (0,6), and (-1/6, 5). I should know.  I graphed the line and check my answers on a graphing calculator.  Also, if you need help in math go to the math website listed somewhere on your textbook.
981873
-7 and -sqrt49\n\nYou can not take a square root of a negative number. Well, you can, but it's called an imaginary number because it can't actually exist.
1007006
add or subtract 1\n\nor else subtract the S at the begining of Seven
169693
the absolute value of -4 (usually written |-4|) is 4\n\ntherefore (-2) - |-4| = (-2) - 4 = -6\n\n-6