Answer:
x=20
Step-by-step explanation:
3x - 10 + 5x + 30 = 180
8x + 20 = 180
8x = 160
x = 160/8
x = 20
check:
3(20) - 10 + 5(20) + 30 = 180
60 - 10 + 100 + 30 = 180
50 + 100 + 30 = 180
150 + 30 = 180
180 = 180 ✓
Rewrite the equation as
a
m
t
=
c
a
m
t
=
c
.
a
m
t
=
c
a
m
t
=
c
Divide each term by
a
t
a
t
and simplify.
Tap for more steps...
m
=
c
a
t
Answer:
42.22 (2 repeating)
Step-by-step explanation:
When you are given percentage problems, you deal with the percent (%), base (amount you are starting with), and the amount.
Starting with the most basic equation,
Percent * Base = Amount
In this problem, you are given the amount (38) and the percent (90)
So to find the base, you can do
Base = Amount / Percent
As always, convert the percent to a decimal by dividing by 100.
38/ 0.9 = 42.222 repeating
So he started at
9:30 a.m.
three hours and ten minutes later
9+3 is 12
30 + 10 is 40
12:40 p.m.
it took him 47 minutes to replace
so 12:40 plus 47 minutes is
1:27 p.m.
He then rode for another 56 minutes to finish the race
so 1:27 plus 56 minutes
2:23 p.m.
Hope this helps :)
(
3
x
−
5
)
(
2
x
+
7
) this would be chur answer