Answer:
This: Im sorry but, I can't type it all, I just looked up some help.
Step-by-step explanation:
You can rewrite the equation as
5
x
−
3
x
+
8
=
−
10
Then
5
x
−
3
x
=
2
x
So
2
x
+
8
=
−
10
Then, to move the whole numbers to one side, you subtract
8
from both sides
2
x
=
−
18
To get rid of the
2
in front of the
x
, divide both sides by
2
x
=
−
9
First you have to find 1/3 of the marbles. That means in the twelve marvels she has, there are three even groups. Divide twelve by three and you get four. So if each group is four, it is simple from here on out. If she started out with twelve and she lost 1/3 of them(4) it would be 12-4. You know this because lost is another for for subtract. 12-4=8. She has 8 marbles left.
Answer:
30
Step-by-step explanation:
40/100 x 50= 20
50-20=30
Answer:
True because 1/2 an hour is 30 minutes.
Step-by-step explanation:
Answer:
Step-by-step explanation:
The formula of a volume of a square pyramid:
a - base edge
h - height of a pyramid
We have H = 8in.
Substitute and solve for a:
