Answer:
Step-by-step explanation:
The equations that she wrote are
6x+8y=133
2x=y
The following statements about the system are true
1.Since the cost for each pie is $5 and $9, the first equation should be 5x+9y=133
5. The second equation is correct because there are more 6 inch pies and 2 times a number is always more.
The following statements are wrong because,
2. Because there was no relationship between the number of pipes sold and the size of each pipe.
3. x=2y shows that there are more 8 inches pipes
4. 6 and 8 are just size descriptions. It is only the cost of each size of pipe that related to the total cost
Answer:
Step-by-step explanation:
Using the rule of exponents
= 
, then
= 
=
Answer:
<u>$86.40</u>
Step-by-step explanation:
80 × .08 = 6.40
80 + 6.40 = $86.40
Answer:
im just saying this is supposed to help you, this is just flat out cheating, but its d
Step-by-step explanation:
Answer:
Brand A: $0.05
Brand B: $0.07
Brand A is the better buy
Step-by-step explanation:
Brand A: 72x = 3.89
Brand B: 96x = 6.62
Brand A:
72x = 3.89
/72 /72
x = $0.05 (this one is the better buy)
Brand B:
96x = 6.62
/96 /96
x = $0.07
Hope this helps!
