2/20 = 1/10 = 3/30 = 4/40
so 3 equivalent ratios can be 1/10 (or 1:10), 3/30 (or 3:30), 4/40 (or 4:40)
Answer:
this is hard what grade is this for
Step-by-step explanation:
Answer:
(-4, y) and (4, y), where y is any real number.
Step-by-step explanation:
The point (-4; 7.5) is 4 units from the y axis.
All points that lie on the line x = -4 and the line x = 4 have the same distance from the y-axis of 4 units.
Step-by-step explanation:
let father's age be f yr old and son age be s yr old
f = 5s -(1)
f + s = 60 -(2)
sub (1) into (2):
5s + s = 60
6s = 60
s = 10
f = 60 - 10 = 50
in 5 yr time, father age = 50 + 5 = 55
son age = 10 + 5 = 15
2.5-2.1=0.4
41+51=92
0.4x2+92x2=184.8 units