Answer:
See below.
Step-by-step explanation:
1.
(10 * 20)/(20 + 30) = 200/50 = 4
2. a.
Factors of 30: 1, 2, 3, 5, 6, 10, 15, 30
Factors of 40: 1, 2, 4, 5, 8, 10, 20, 40
2. b.
10
3.
{-1, -3, -5, -7, ... }
4.
407,006,962
5.
1, 2, 3, 4, 5, 6, 10
6.
-7 > -11
Negative seven is greater than negative eleven.
7.
2, 3, 4, 6, 8, 9
8.
-4 -3 -2 -1 0 1 2 3 4
<-------+------+<-----+------+------+------+------O------+------+------>
Start at the 2, shown by the open circle. Draw a segment to the left 5 units long to subtract 5. You end up at -3.
9.
6400 =
= 6000 + 400 + 0 + 0
= 6 * 1000 + 4 * 100 + 0 * 10 + 0 * 1
10.
x + $4.60 = $10.00
x + $4.60 - $4.60 = $10.00 - $4.60
x = $5.40
11.
p - 3850 = 4500
p - 3850 + 3850 = 4500 + 3850
p = 8350
12.
8z = $50.00
8z/8 = $50.00/8
z = $6.25
13.
I don't see an equation.
