Answer:
459
Step-by-step explanation:
27 x 17= 459
The area of the shaded region is 
<h2>Area of composite objects</h2>
The area of the shaded region is expressed according to the formula:
Get the area of the square As
As = a²
Take the difference in the areas
Area of the shaded part = 
Area of the shaded part =
Hence the area of the shaded region is
Learn more on area of composite objects here: brainly.com/question/22716761
It is the first one,
........ 20. 24
256a. b
Answer:
30 seconds
Step-by-step explanation:
Find the total distance needed to be traveled. 520-250 = 270
Find combined rate. 4+5=9
Divide distance needed to be traveled by combine rate to get answer.
270/9 = 30.
I'll do substitution for you.
Lets flip the second equation around a little to make it x=-4y-8
Now plug it into the first equation.
2(-4y-8)+y=5
-8y-16+y=5
-7y=21
y=-3
Plug it back in to get x and then you solved the system.
2x-3=5
2x=8
x=4
So the solution to the system is
(4,-3)
Now to do it via elimination..
Lets get rid of the x to just leave the y
Multiply the second equation by -2..
2x+y=5
-2x-8y=16
combine like terms...
-7y=21
y=-3
plug it in again...
2x-3=5
2x=8
x=4
(4,-3)
