If 28 tiles is placed in 7 rows then each row has 4 tiles.
<u>Step-by-step explanation:</u>
The total number of tiles given =28.
The number of rows = 7.
The number of tiles in each row is given by diving the total number of tiles given by the number of rows.
No of tiles in each row=
.
No of tiles in each row =
.
No of tiles in each row = 4.
Note: You can replace the values according to the given values.
The cycle number two is the answer
The coffee shop used 52 pounds of Type A coffee.
Step-by-step explanation:
Cost of Type A coffee per pound = 5.25
Cost of Type B coffee per pound = 4.10
Total pounds used in blend = 142
Total cost = 642.00
Let,
x be the pounds of Type A coffee used
y be the pounds of Type B coffee used
According to given statement;
x+y=142 Eqn 1
5.25x+4.10y=642.00 Eqn 2
Multiplying Eqn 1 by 4.10
![4.10(x+y=142)\\4.10x+4.10y=582.20\ \ \ Eqn\ 3](https://tex.z-dn.net/?f=4.10%28x%2By%3D142%29%5C%5C4.10x%2B4.10y%3D582.20%5C%20%5C%20%5C%20Eqn%5C%203)
Subtracting Eqn 3 from Eqn 2
![(5.25x+4.10y)-(4.10x+4.10y)=642.00-582.20\\5.25x+4.10y-4.10x-4.10y=59.80\\1.15x=59.80\\](https://tex.z-dn.net/?f=%285.25x%2B4.10y%29-%284.10x%2B4.10y%29%3D642.00-582.20%5C%5C5.25x%2B4.10y-4.10x-4.10y%3D59.80%5C%5C1.15x%3D59.80%5C%5C)
Dividing both sides by 1.15
![\frac{1.15x}{1.15}=\frac{59.80}{1.15}\\x=52\\](https://tex.z-dn.net/?f=%5Cfrac%7B1.15x%7D%7B1.15%7D%3D%5Cfrac%7B59.80%7D%7B1.15%7D%5C%5Cx%3D52%5C%5C)
The coffee shop used 52 pounds of Type A coffee.
Keywords: linear equation, elimination method
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Question 3 is 48
Question 4 is 45