Answer:
8
Step-by-step explanation:
1/2 x 4^2 = a
4^2= 16
1/2 of 16 = 8
Answer:
since the unknown amount can buy 100 pencils
he bought 70 pencils
therefore $4.50 can buy 30 pencils
so 1 pencils cost $4.50 /30=0.15
Answer:
2
Step-by-step explanation:
y = 2x +7
so,
if x=0 then y =2 x 0 +7 =7
if x=1 then y =(2 x1) +7 =2+7=9
if x=2 then y =(2 x2)+7 = 4+7 =11
if x=3then y =(2 x3) +7 = 6+7 =13
if x=4 then y =(2 x4) +7 =8+7 =15
if x=5 then y =(2 x5) +7 = 10+7 =17
Answer:
Subtraction property of equality
Step-by-step explanation:
You subtracted c from both sides of the equation to preserve equality