Answer:
6.5 m^2
Step-by-step explanation:
The area of a parallelogram is calculated by multiplying height to the base
If the area is 78 m^2 and base is 12 we can find the height by dividing the area by base
78 ÷ 12 = 6.5 m^2
I believe it is 1500
(1920 - 420)
Perimiter=2L+2W
w=x
P=80
80=2L+2x
diviide by 2
40=L+x
40-L=x
40-x=L
the area is found by legnth times width
LW or Lx
for a maximum area, try to get the legnths of the sides the same
therefor
L=W=x for max area
40=x+x
40=2x
divide 2
20=x
max area =legnth times width=20^2=400
note: all squares are rectangles, but not all rectangles are squares
L=40-x
A=(40-x)(x)
max area=400 cm^2
Answer: x = - 9 is greater
Step-by-step explanation:
-2(5-x)-15 is greater than 12(x+1)-10(x-3)
-2(5-x)-15
-10 - 2x - 15
-2x -15 -10
-2x -25
x = -25/-2
x = - 12,5
12(x+1)-10(x-3)
12x + 12 - 10x -30
2x -18
x= -18/2
x = - 9