Answer:
Plates are 2.80 Dollars and cups are 1.40 dollars
Step-by-step explanation:
Cups = c
Plates = p
6p + 5c = 23.80 ==> multiply by 6 ==> 36p + 30c = 142.80
7p + 6c = 28.00 ==> multiply by 5 ==> 35p + 30c = 140.00
Now use algebra to have the 30c be on one side and the rest on the other:
36p + 30c = 142.80 | -36p
30c = 142.80 - 36p
35p + 30c = 140.00 | -35p
30c = 140.00 - 35p
Now set them equal to each other about the 30c:
142.80 - 36p = 140.00 - 35p
Use algebra to solve for p:
142.80 - 36p = 140.00 - 35p | +36p
142.80 = 140.00 + p | - 140
2.80 = p
Go back to one of the "30c" equations and plug in the value for p:
30c = 140 - 35p
30c = 140 - 35(2.80)
30c = 140 - 98
30c = 42 | /30
c = 42/30
c = 1.4
It would be equal to 110 2/7
Answer:
B
Step-by-step explanation:
18 is the only number given that can be divided without having a remainder or decimal.
1026 ÷ 18 = 57
Answer:
perimeter of square =34cm
Step-by-step explanation:
its 64..area
normally we find area by calculating side ×side
so 8×8
=64
Answer:
591,800,000
Step-by-step explanation:
The 7 in 753,460 is rounded to an 8 because if the number after it is 5 or higher you turn all the numbers after the 7 into a 0 and turn 7 into a 8.