x= standard
y = high quality
x +y = 1070
y=1070-x
2.8x + 4.9y =3521
2.8x +4.9(1070-x) = 3521
2.8x+5243-4.9x =3521
-2.1x=-1722
x=-1722/-2.1 = 820
820*2.8 =2296
1070-820 =250
250*4.9 = 1225
1225+2296 = 3521
there were 250 high quality downloads
Answer:
i think it’s B
Step-by-step explanation:
Perimeter= 2(L+W)
2(L+W)=28
2(2W-1+W)=28
2(3W-1)=28
6W-2=28
6w=30
W=5
in short the answer is 5
Answer:

Height= 16 feet
Step-by-step explanation:
Please see attached picture for full solution.