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sobell7725
14.07.2019 •
Mathematics
Answer 14 or 15, or both if you want. you for the !
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Ответ:
14.
we look for where the graphs of f(x) and g(x) intersect; we see they do at (-2,4) and (1,1).
the solutions will just be the x coordinate, x=-2 or x=1
15.
what information do we need? if we know it's a line we just need two points on it.
the variable m represents the slope of the line and b is the y intercept.
the y intercept is the value when x=0, so b=-1
the slope is the change in y divided by the change in x, so we can just pick the first two points.
m = (-1 - -7)/(0 - -2) = 3
y = 3x - 1
it checks for the other points.
Ответ:
Perimeter of ABCD = 21.58 units
Step-by-step explanation:
Distance formula:-
Le (x₁,y₁) and (x₂,y₂) be the two end points of a line segments.Then length of segment = √[(x₂ - x₁)² + (y₂ - y₁)²]
It is given that,
ABCD is a quadrilateral A(-3,2) B(4,2) C(3,-3) D(-3,3)
To find the side length of quadrilateral
A(-3,2) , B(4,2), C(3,-3) and D(-3,3)
AB = √[(4 --3)² + (2 - 2)²] = √[(4 +3)² + 0] = 7
B(4,2) C(3,-3)
BC = √[(3 - 4)² + (-3 - 2)²] = √26 = 5.1
CD = √[(-3 - 3)² + (3 - -3)²] =√72 = 8.48
AD = √[(-3 - -3)² + (3 - 2)²] =1
To find perimeter of ABCD
Perimeter = AB + BC + CD + AD = 7 + 5.1 + 8.48 + 1= 21.58