Let the number be x
15 × x² = 20 × x
⇒ 15x² = 20x
⇒ 15x² / x = 20
⇒ 15x = 20
⇒ x = 20/15
⇒ x = 4/3
The number is 4/3
Hope it helps!
19 weeks, 325-40=285 285/15=19
5.) -4
6.) 3
7.) 4
8.) it would be your other choice, i can’t see what it says.
Let l length, w width, p perimeter:
l=12+w
2(l+w)=p
2((12+w)+w)= 100
2(12+2w)=100
12+2w=50
2w=38
w=19
l=12+w=12+9= 21
l=21
