Answer:
Let y represents the maximum variation in the level of chlorine,
Given,
Level of chlorine in a hot tub is within 1.75 ppm of 3.25 ppm.
So, the standard level of chlorine = 1.75 + y or 3.25 - y
⇒ 1.75 + y = 3.25 - y
⇒ 2y = 5
⇒ y = 2.5
Thus, the standard level would be 2.5 ppm,
If x represents the present level of chlorine,
Then it would be lie within 1.75 ppm of 3.25 ppm.
If the difference between x and standard level ≤ Maximum variation
⇒ |x-2.5| ≤ 0.75
Which is the required absolute value inequality to represent this situation.
b. If x = 1.0 ppm,
Since |1.0-2.5|=1.5 which is not less than equal to 0.75,
Hence, he should add more chlorine.
Step-by-step explanation:
Y(5y) + y(4) + 3y^2
5y^2 + 4y + 3y^2
8y^2 + 4y
Answer:
Rounding out we have that 15 liters equals 3.96 gallons
Step-by-step explanation:
I hope this halp
A.
P=2(L+W)
W=29
P is at least (means greater than or equal than ) 134
so
134≤2(L+29) is the inequality
B.
solve
divide both sides by 2
67≤L+29
minus 29 from both sides
38≤L
Length is any value greater than or euqal to 38ft
Answer:
inner = 4x
Step-by-step explanation:
x^2 + 2x - 8
........