Step-by-step explanation:
Given:
2x−y=7
Matching given equation with the variables,
a=2
and
b=−1 .
Swap "a" and "b"
-x + 2y = 7
Because b is negative, let's change that one:
x + 2y = 7
Is perpendicular to
2x−y=7
. Here is a graph to prove it:
The red line is
2x−y=7
The blue line is
x+2y=7
If you want the perpendicular line to go through a given point, then make the constant term on the right a variable (for example k)
x+2y=k
Now lets make the perpendicular line go through the point
(1,1)
by substituting 1 for x, 1 for y and the solving for k:
1+2(1)=k
k=3
The equation of the line that perpendicular to
2x−y=7 and goes through the point
(1,1)is:
x+2y=3
Please mark me as brainleist.
Answer:
<h2>x=19</h2>
Step-by-step explanation:
pls mark as brainliest!!!
From the exterior angle theorem, we have 
so 
The answer would be −
16
−
28
i
Answer:
Andrew is 30 years old. Hunter is 65 years old.
Step-by-step explanation:
we can set up 2 equations:
h = 35 + a
h+5 = 2(a+5)
Solve for h in the second equation.
h + 5 = 2a + 10; h = 2a + 5
now set the 2 equations = to each other
2a + 5 = 35 + a
solve for a by combining like terms
a + 5 = 35
a = 30
so Andrew is 30 and Hunter is 35 + 30 = 65.
Sp in 5 years Andrew is 35 and Hunter is 70 (twice A's age)
