Answer:
z = 7
Step-by-step explanation:
4z - 8 = 20
Add 8 to each side
4z - 8+8 = 20+8
4z = 28
Divide each side by 4
4z/4 = 28/4
z = 7
You split the abs val into a pos and neg soln to write
x–5 = 3 and x–5 = –3
x = 8 and x = 2
Answer:
2a
Step-by-step explanation:
2a(8+9b)
Open the bracket you have
16a+18ab
Answer:
12 different sums
Step-by-step explanation:
there's three darts and three numbers.
if you use the factorial 3! for both the number of darts and the score numbers and add the two together, you would get twelve :
( 3! = 3*2*1 = 6 ) * 2
6 + 6 = 12
or you could just write out all the combinations like this :
2+2+2
2+2+5
2+5+5
2+5+8
2+8+8
5+5+2
5+5+5
5+5+8
5+8+8
8+8+2
8+8+5
8+8+8
