One of the product rules for exponents was used.
$(ab)^{c}=a^{c}b^{c}$

Or, you can consider that the definition of an exponent and the associative and commutative properties of multiplication were used.
$(3z)^{2}\\=(3z)(3z)\\=3\cdot 3\cdot z\cdot z\\=3^{2}z^{2}\\=9z^{2}$

3 0

3 years ago

Mark and his three friend's ate at Applebee's. Their bill totaled $52.35. if they left the server a 20% tip, how much would each

kompoz [17]

Check the attachment.

6 0

4 years ago

Help me pls the questions are here

andreyandreev [35.5K]

3x + 7 = -x - 1
3x + 7 + = -1
4x + 7 = -1
4x = -1 - 7
4x = -8
x = -2

1 - 2x + 5 = 4x - 3
-2x + 6 = 4x - 3
6 = 4x - 3 + 2x
6 = 6x - 3
6 + 3 = 6x
9 = 6x
x = 6/9
x = 2/3

i helped you with the first two questions so you can see how you can solve it.

hope this helps, God bless!

6 0

3 years ago

20 pts and a mark. Please Help!!!A store is having a sale on chocolate chips and walnuts. For 3 pounds of chocolate chips and 2

netineya [11]

Answer:

Step-by-step explanation:

7 0

3 years ago