A. Two properties are involved. 1) the additive inverse property of addition that says -1 +1 = 0, and 2) the substitution property of equality that says -1+1 can be substituted for 0.
b. The distributive property.
c. The identity property of multiplication.
d. Here, there are three properties involved. 1) the addition property of equality tha says I can add -3 to both sides of the equation; 2) the additive inverse property that says -3+3 = 0; and 3) the identity property of addition that says ( )+0 = ( ).
Answer:
a= -b+z^6 and b= -a+z^6
Step-by-step explanation:
simplify both sides of the equation then isolate each variable
Answer:
<u>The knitting club has 7 members </u>
Step-by-step explanation:
1. Let's check the information provided to us to answer the question correctly:
Cost of new patterns book = US$ 3.50
Cost of set of knitting needles for each member = US$ 3.20
Cost of set of a ball of yarn for each member = US$ 3.20
2. Write and solve an equation to determine how many members the knitting club has.
Number of members of the knitting club = x
For solving for x, we can use this equation:
3.50 + 3.20x + 5.40x = 63.70
8.60x = 63.70 - 3.50
8.60x = 60.20
x = 60.20/8.60
x = 7
<u>The knitting club has 7 members </u>