Step-by-step explanation:
To find the sum of the measures of the intereor angles of each convex polygon
we using formula
<h3>#4</h3>
we can put the value of x is 54
then,
<h3>#5</h3>
we can put the value of x is 19
then,
#6
we can put the value of x is 292
then,


- =》 52200°
#7
we can put the value of x is 5
then ,


- =》 540°
Answer:
The distance from Simon's house to the beach is 137.5 miles
Step-by-step explanation:
we know that
The speed is equal to the ratio of the distance and the time
Let
s ----> the speed in mph
x ----> the distance in miles
y ---> the time in hours

we have


substitute in the formula and solve for x


Answer:
Answer:
The anwser is 2
Step-by-step explanation:
1 for each person
Answer:
7x - 3y = 1
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Rearrange 3x + 7y = 15 into this form
Subtract 3x from both sides
7y = - 3x + 15 ( divide all terms by 7 )
y = -
x +
← in slope- intercept form
with slope m = - 
Given a line with slope m the the slope of a line perpendicular to it is
= -
= -
=
, thus
y =
x + c ← is the partial equation of the line
To find c substitute (4, 9) into the partial equation
9 =
+ c ⇒ c - 
y =
x -
← in slope- intercept form
Multiply through by 3
3y = 7x - 1 ( subtract 3y from both sides )
0 = 7x - 3y - 1 ( add 1 to both sides )
1 = 7x - 3y, that is
7x - 3y = 1 ← in standard form
Y=2x+5
4x-2y=-10
4x-2(2x+5)=-10
4x-4x-10=-10
-10=-10