Consecutive odd integers are 2 apart
they 2 numbers are
n and n+2
their product is 99
n times n+2=99
n(n+2)=99
n²+2n=99
minus 99 both sides
n²+2n-99=0
what 2 numbres multiply to -99 and add to get 2
if you can't do that
complete square
n²+2n+1-100=0
(n+1)²-100=0
(n+1)²=100
sqrt both sides
n+1=+/-10
n=-1+/-10
n=-11 or 9
if n=-11, then n+2=-9
if n=9 then n+2=11
the integers are -11 and -9 or 9 and 11
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Answer:
since they are parallel lines, the slopes are equal. we should divide vertical displacement by horizontal displacement in one of them to get the slope:
The answer to the question is 6.5 quarts because according to this 1 quart will cover 1600 square feet
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Complete Question
A Chinese restaurant has the family special shown at right. What is the original average cost of the entrees if the discount is $2 per entree? ANY FOUR ENTREES FOR $20
Answer:
$7
Step-by-step explanation:
From the question we are told that :
Any 4 entrees = $20,
And there is a discount of $2 per entree.
Let us represent the original average cost of entrees as = a
Hence, we have the algebraic expression
4(a - 2) = 20
4a - 8 = 20
4a = 20 + 8
4a = 28
Divide both sides by 4
4a/4 = 28/4
a = 7
Therefore, the original average cost of the entrees if the discount is $2 per entree is $7.
