Answer: B represents 7
This problem is asking us to find halfway between 2 and 12.
[Method One]
12 - 2 = 10
-
10 / 2 = 5
-
2 + 5 = 7
<em>or</em>
12 - 5 = 7
[Method Two]
[Method Three]
We can count up from 2 and down from 12 until we hit the middle
2 12
3 11
4 10
5 9
6 8
7 7
Answer:
A
1
=
x
⋅
y
⇒
36
=
x
⋅
y
⇒
x
=
36
y
A
2
=
x
⋅
z
⇒
21
=
x
⋅
z
⇒
x
=
21
z
Step-by-step explanation:
Answer:
Sue is 6 and Mary is 10
Step-by-step explanation:
let Sue's age be x then Mary is x + 4 and the sum of their ages is
x + x + 4 = 16
2x + 4 = 16 ( subtract 4 from both sides )
2x = 12 ( divide both sides by 2 )
x = 6
x + 4 = 6 + 4 = 10
then Mary is 10 and Sue is 6
The unfilled/open dot shows that we don't include that number
the filled/closed dot shows taht we include the number
so we see that it is open at -4 and closed at 4 so it is
-4<x and 4<u>></u>x so
S={x| -4<x<u><</u>4}
