We can use substitution to solve for x then substitute the x value back into the original equation to solve for y...
5x + 2y = 7
y = x + 1
Since y = x + 1, we can substitute x + 1 for y in the first equation
5x + 2(x+1) = 7
5x + 2x + 2 = 7
7x + 2 = 7
7x = 5
x = 5/7
Now substitute 5/7 for x in either of the original equations
y = x + 1
y = 5/7 + 1
y = 1 5/7
Solution set is (5/7, 1 5/7)
Answer:
The variable in that expression is x
Answer:
I think the answer must be A.
Step-by-step explanation:
=>
=>
=> -1 × 7²
=> -7²
=> -49
Hoped this helped.
Answer:
X=5 y=-2
Step-by-step explanation:
Set them equal to each other so...
-2x+8=3x-7
Simplify by balancing out the equation so
-5x=-1
So x=5
Now plug it into either y equation
-2(5)+8
-10+8
Y=-2
Hope this helps!
Answer:
Puppy Liz runs 34.61 ft.
Step-by-step explanation:
From the figure we can extract two triangles: one with angle 34° and adjacent 40ft, the other with angle 34°+23° and adjacent 40ft.
Let us call the distance from the pole to the fire hydrant , and the distance from the pole to the bench , then the distance from the fire hydrant to the bench is
which is the distance the Puppy Liz runs.
Now, from trigonometry we have
and
Therefore, the distance Puppy Liz runs is