Answer:
1. 65°
2. 115°
Step-by-step explanation:
1 is a linear pair
2 u just do 180 - 65 =___
that is ur answer
Answer:
7/2
Step-by-step explanation:
Answer:
x/y = 88/7
Step-by-step explanation:
x+y=19
x+3y=12y+5
First rewrite second equation as:
x +3y-12y = 5
Combine like terms:
x-9y = 5
Now you have:
x+y=19
x-9y = 5
Elimination method Subtract 2 equations:
10y = 14 Divide both sides by 10
y = 14/10 = 7/5
Plug in y in any given equation and calculate x:
x+ 7/5 = 19 Subtract 7/5 from 19
x = 88/5 = 17 3/5
x/y = 88/5 : 7/5
Rule: second differences are 2.
Selection C is appropriate.
_____
First differences are the sequence of differences of the given numbers:
.. 3 -8 = -5
.. 0 -3 = -3
.. -1 -0 = -1
.. 0 -(-1) = 1
Second differences are the sequence of differences of these:
.. -3 -(-5) = 2
.. -1 -(-3) = 2
.. 1 -(-1) = 2
All of these are 2, so the sequence can be described by a *second* order polynomial (because *second* differences are a non-zero constant).
Answer:
x=-4.992 and x=-0.434
Step-by-step explanation:
we have
we can divide the equation above into two equations
so
----> equation A
----> equation B
Solve by graphing
The solutions of the system are the x-coordinates of the intersection points both graphs
using a graphing tool
The solutions are x=-4.992 and x=-0.434
see the attached figure
