Step-by-step explanation:
1. 3( x - 5 ) + 2x - 3
= 3x - 15 + 2x - 3
= 5x - 18
2. 4a - 3 ( 4 - a )
= 4a - 12 + a
= 5a - 12
3. -2 ( b - 6 ) + 2
= -2b + 12 + 2
= -2b + 14
= 14 - 2b
4. 6 - 3 ( 3 + x )
= 6 - 9 - 3x
= -3 - 3x
Y² -9=0
a=1, b=0, c=-9
0² -4*1*(-9)
y=36
Answer:
Add 3 to both sides
Property: Addition property of equality
Step-by-step explanation:
Action: Add 3 to both sides.
⇒ x - 3 = 12
(cancel out)+ 3 + 3
------------------------ -----
x = 15
The property used:
- Addition property of equality.
→ equation is true and the same #is added to each side the resulting equation is true. for any #s a,b,c,if a=b then a+c=b+c.
Answer:
54 x 1; 27 x 2; 18 x 3; 9 x 6
Step-by-step explanation:
Find all the factors of 54:
1, 2, 3, 6, 9, 18, 27, 54
A rectangle with area 54 can have the dimensions:
54, 1
27, 2
18, 3
9, 6