Answer:
a) On Desmos.
b)The solution set {-2,-2}
Step-by-step explanation:
For drawing a line on graph we require minimum two points.
we have,
Put x = 0,we get
y = 2
∴ Let A (0,2)
Similarly
Put y = 0 we get
x = -1
∴ Let B (-1,0)
Now Draw line AB
For y = -2
It is the line parallel to X axis where Y value is always -2
Now , by drawing these two lines we will get the intersecting point, and this intersecting point is the solution to the system. Let the point be C (-2,-2)
Here we substitute y= -2 in y = 2x + 2 we get
The solution is {-2,-2}
Answer:
Step-by-step explanation:
For the sake of clarity, assuming you meant:
1) Absolute Value or Modulus functions has one property that assures us that:
2) Solving for x
Not defined in Real Set of Numbers
Evaluating :
3) So, since for the first case the Discriminant Δ <0, then the solutions presented for . The only solution in the Real Set for the inequality
is
, i.e. x=-1.
Answer:
$996
Step-by-step explanation:
The rectangular plot has an area that is the product of its length and width. We are given the width as 12 feet, and the area as 240 ft², so we can find the length from ...
... A = L×W
... 240 ft² = L×(12 ft)
... 240 ft²/(12 ft) = L = 20 ft
Opposite sides of the rectangle are the same length, so the cost of fence for a side of a given length will be the sum of the costs of the opposites sides.
The 12 ft side has one segment that is $18 per foot, and one that is $15 per foot. For the 20 ft sides, both are $15 per foot. Then the total cost can be figured from ...
... (12 ft)·($18/ft + $15/ft) + (20 ft)·($15/ft +$15/ft) = 12·$33 +20·$30 = $996
