Solve both equations for y:
Set the expressions equal to each other:
So, for every nonzero number a the system of equations has
one solution.
Answer:
The Area of the Grass is 18 square meters.
Step-by-step explanation:
Find the area of the grass and sand (5*6). The area of the grass and sand is 30.
Next, find the area of just the sand (3*4). The area of the sand is 12.
Subtract the area of the sand (12) from the area of the grass and sand (30).
30-12 = 18
There is no overlap in the solutions to the two inequalities.
The solution set is the empty set: { }._____
The solution to the first is x ≥ (8-1)/3, or x ≥ 2 1/3.
The solution to the second is x ≤ 15/10, or x ≤ 1 1/2.
The mathematical expression that represents the given statement is 4/(7-x)
<h3>Writing an Expression </h3>
From the question, we are to write a mathematical expression for the given statement
The given statement is
"4 is divided by the difference of 7 and a number."
First,
Let the number be x
"the difference of 7 and a number" means
7 - x
Thus,
"4 is divided by the difference of 7 and a number" is
4/(7-x)
Hence, the mathematical expression that represents the given statement is 4/(7-x)
Learn more on Writing and Expression here: brainly.com/question/4681624
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Step-by-step explanation:
To answer this question we must understand what does each percentge mean :
- 80 percent alcohol mrans that in one liter we have 0.8 l of alcohol and 0.2 liter of water for example
- 65 percent ⇒0.65 liter of alcohol and 0.35 liter of water
For 71 percent alcohol we have the quantity wich is 15 liter
so :
15 liter⇒ 100 percent
x( the unkhown quantity)⇒ 71 percent
x = (15*71)/100 )= 10.65 liter of alcohol
so we want 10.65 liter of alcohol
here is a way :
lat's take 10 L of 80 percent alcohol and 4liters of the other one
10*0.8+4*0.65 = 10.6
we just need 0.05 liter of alcohol
add 0.0625 L of the 80 percent liter alcohol to get 10.65
