Answer:
The value of k is 11.
Step-by-step explanation:
m=(y2-y1)/(x2-x1)
2=(k-3)/(5-1)
2=(k-3)/4
2*4=k-3
8=k-3
k=8+3
k=11
51% less.
The length is decreased by 50%, which is the same as being multiplied by 0.5, then it's increased by 40% which is another multiplication by 1.4. So the overall change is 0.5 * 1.4 = 0.7, or the newest rectangle is 70% of the size of the original rectangle. And since the area increases by the square, the newest rectangle has 0.7 * 0.7 = 0.49 of the area as the original rectangle. So it has 51% less area than the original rectangle.
3.99 = > 3 + 0.99
first let's round up the 0.99, and the 9 rounds up to 1.0 so 0 + 1.0 = 1.
3 + 1 = 4, rounded up.
to the nearest tentth, 4.0.
the .0 simply means 0 tenths, since it's a whole 4.