R=number of hours ruby worked
i=number of hours issac worked
s=number of hours shetland worked
ruby worked 8 more than issac
r=8+i
shetland worked 4 times as many as ruby
s=4r
total they worked 136
r+i+s=136
so
we gots
r=8+i
s=4r
for r=8+i
solve for i
minus 8 both sides
r-8=i
so
r+i+s=136
subsitute r-8 for i and 4r for s
r+r-8+4r=136
6r-8=136
add 8 to both sides
6r=144
divide both sides by 6
r=24
sub back
r-8=i
24-8=i
16=i
s=4r
s=4(24)
s=96
ruby worked 24 hours
issac worked 16 hours
shetland worked 96 hours
Answer:
x = -3 is the answer. Writing this cause brainly requires a 20 character answer.
Answer:
2 times _ minus three = 12
x=9
Step-by-step explanation:
In my head I would do 12 divided by 2 then I would add 3 to 6 which is the answer to 12 divided by 2
F(x)=-3.25x +22.41
f(-4.2)= 3.25(-4.2)+22.41 = 8.76
