Answer: D (5/2, -17/4)
Step-by-step explanation: Using elimination your goal is to get rid or 1 variable so you can solve for the one that's left. By adding the -2y and 2y you will get 0. You will also add the 3x+x (4x) and -1+11 (10). You have now gotten rid of the y and have 4x=10. By dividing each side by 4 we now know x =2.5. D is the only possible solution with x=2.5 (5/2) but to solve for y you plug 2.5 in to an equation as x so) x-2y=11
2.5-2y=11
-2y=8.5 Answer D (5/2,-17/4) y=-17/4 (4.25)
Answer:
74
Step-by-step explanation:
2(28x9)
74 is the perimeter
Per cent means out of 100. 47/100
Answer:
A×B={(a,2),(a,5),(b,2),(b,5)}
Dilations stretch or shrink a pre-image. A scale factor greater than 1 will produce an enlargement of the pre-image, and a scale factor less than 1 will produce a reduction of the pre-image. If the scale factor is 1 the pre-image and the image are congruent.
The scale factor between 0 and 1 would result in a dilation that is a reduction.