Since the second equation gives a value for a, we can substitute it into the other equation to find a value for B.
Let's substitute b-2 into the first equation wherever there is an a.
a - 3b = 4
(b-2) - 3b = 4
b - 2 - 3b = 4
-2 - 2b = 4
-2b = 6
b = -3
Now let's find a by substituting -3 into either of the equations to find the value of a.
a = b - 2
a = -3 - 2
a = -5
So your solution set is (-5, -3)
Answer:
97 trays
Please follow along below for an explanation.
Step-by-step explanation:
If a stack of 50 kitchen trays is 7.25 inches tall, how many would it take to make a stack 14 inches tall?
The first step is to divide the 7.25/50 to determine the height of each plate.
The answer to this is 0.145 inches per tray.
Now you need to find how many are in 14 inches.
Divide 14 inches by 0.145 inches to find out how many plates are needed.
You will get an answer of 96.55
You can't exactly have 96.55 serving trays so you need to round to the nearest whole number. Because the decimal is greater than 0.5, you round up.
This gets you to 97 serving trays.
The fraction of his farm which isn’t ruined is 11/18
<h3>Fractions and proportion</h3>
Fractions are written as a ratio of two integers. The given question will be solved using the method of proportion.
If Uncle Bill has planted fruits in the farm and 7/12 is watermelon, and 2/3 of the watermelon section is ruined from the storm, the fraction ruined from the storm is;
Fraction ruined from the storm = 2/3* (7/12)
Simplify to its lowest term to have:
Fraction ruined from the storm = 7/18
Determine the fraction of the firm that is not ruined
Fraction not ruined = 1 - 7/18
Fraction not ruined = 11/18
Hence the fraction of his farm which isn’t ruined is 11/18 if uncle Bill has planted fruits in the farm and 7/12 is watermelon.
Learn more on fraction here: brainly.com/question/17220365
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Answer:
x=2 y=2
Step-by-step explanation: