Answer:
all of them
Step-by-step explanation:
yuh yuh
ANSWER: (-3,-7)
Set them equal to each other so, 2x-1=3x+2 to find x. You should get x= -3
Then you plug in -3 for x to find Y for either y=2x-1 or y=3x+2. I’m picking y=3x+2 so when you plug in -3 to x it will be y=3(-3)+2 = -7 . So therefore y=-7
Answer:
Part A) The triangles ABC and EDC are similar by AAA, because the three internal angles are equal in both triangles
Part B) The width of the river is about ![39\ ft](https://tex.z-dn.net/?f=39%5C%20ft)
Step-by-step explanation:
we know that
If two triangles are similar, then the ratio of its corresponding sides is equal and its corresponding angles are congruent
Part A) we know that
In this problem , triangles ABC and CDE are similar by AAA, because its corresponding angles are congruent
so
-----> by vertical angles
-----> is a right angle
-----> the sum of the internal angles must be equal to 180 degrees
Part B) we know that
The triangles ABC and EDC are similar -------> see Part A
therefore
![\frac{BC}{DC}=\frac{AB}{DE}](https://tex.z-dn.net/?f=%5Cfrac%7BBC%7D%7BDC%7D%3D%5Cfrac%7BAB%7D%7BDE%7D)
substitute the values and solve for AB
![\frac{65}{25}=\frac{AB}{15}](https://tex.z-dn.net/?f=%5Cfrac%7B65%7D%7B25%7D%3D%5Cfrac%7BAB%7D%7B15%7D)
![AB=15*(\frac{65}{25})=39\ ft](https://tex.z-dn.net/?f=AB%3D15%2A%28%5Cfrac%7B65%7D%7B25%7D%29%3D39%5C%20ft)
By definition we have to:
A mathematical function is a relationship that is established between two sets, through which each element of the first set is assigned a single element of the second set or none.
The initial set or starting set is also called the domain; the final set or set of arrival, meanwhile, can be called codomain.
We have the following information:
{(-5.2), (-2.5), (0.7), (0.9)}
The data does not represent a function because two different values of the range belong to an element of the domain:
(0.7)
(0.9)
Answer:
The relation is not a function.