Answer:
(95/31, -118/31)
Step-by-step explanation:
-7x-8y=9
4x+9y=-22
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4(-7x-8y)=4(9)
7(4x+9y)=7(-22)
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-28x-32y=36
28x+63y=-154
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31y=-118
y=-118/31
-7x-8(-118/31)=9
-7x+944/31=9
-7x=9-944/31
-7x=279/31-944/31
-7x=-665/31
7x=665/31
x=(665/31)/7
x=(665/31)(1/7)
x=665/217=95/31
x=95/31, y=-118/31
Answer:
19.7 would be the correct answer
Solution:
16.
Given: 3n+5/7
We can rewrite it as:
3n+5/7 = 3n/7 + 5/7
The sum of two terms is 3n/7 + 5/7.
17.
Given: 9p-6/3
We can rewrite it as:
9p-6/3 = 9p/3 - 6/3
= 3p - 2
The difference of two terms is 3n/7 + 5/7.
18.
Given: Length = -2n+17
Width = 24
Area = length * Width
= (-2n + 17) * 24
= -48n + 408
Hence, the simplest form is -48n + 408.
Answer:y = x 2 − 12 x The domain of the expression is all real numbers except where the expression is undefined. In this case, there is no real number that makes the expression undefined. Interval Notation: ( − ∞ , ∞ ) Set-Builder Notation: { x | x ∈ R } The range is the set of all valid y values. Use the graph to find the range. Interval Notation: [ − 36 , ∞ ) Set-Builder Notation: { y | y ≥ − 36 } Determine the domain and range. Domain: ( − ∞ , ∞ ) , { x | x ∈ R } Range: [ − 36 , ∞ ) , { y | y ≥ − 36 }
Step-by-step explanation:
