Answer:
I think it should be A.
Step-by-step explanation:
8-1 is 7 which is very close to 6, and it says they are similar so this could work.
D=110
t=50
r=x
solution
110=50x
x=110/50
x=1hr. 20mins
or
x=1 X 20/60
x=1 1/3 hr
Oh girl I wish I could. 3848
3x and 2x are alike terms, as they have the same variable
x
4
+
50
x
2
+
625Rewrite
625
as
25
2
.
u
2
+
50
u
+
25
2
Check the middle term by multiplying
2
a
b
and compare this result with the middle term in the original expression.
2
a
b
=
2
⋅
u
⋅
25
Simplify.
2
a
b
=
50
u
Factor using the perfect square trinomial rule
a
2
+
2
a
b
+
b
2
=
(
a
+
b
)
2
, where
a
=
u
and
b
=
25
.
(
u
+
25
)
2
Replace all occurrences of
u
with
x
2
.
(
x
2
+
25
)
2