16.
since the coordinates of two apexes are (2,2), (-2, -2), we can easily know that the other two apexes' coordinates are (-2, 2), (2, -2). therefore, we are supposed to calculate the area of a square with the length of side equals 4. 4*4=16.
(seems that u didn't uploaded the picture...)
C
We can write the given line in this way: y=-1/3x+4, thus the slope of given line is -1/3. Two lines are perpendicular when the product of their slope is equal to -1. Therefore, the slope of another line should be (-1)/(-1/3)=3.
0<BC<1.5
The answer is evident if u draw out the picture.
0.2
1.783 rounded to the nearest whole number: 2;
1.783 rounded to the nearest tenth: 1.8;
2-1.8=0.2
以(-2,-2)和(2,2)的矩形面积唤销?4*4=16
figure above... What can I say...
相互垂判山直掘链中的话k1*k2=-1. k1=-1/3, k2=3 选C
Please give the choices... AC=4.5-2=2.5; (4.5-3.5)<AB<2.5; 0<BC<1.5
whole number->2, nearist tenth->1.8. The answer is 0.2