Answer:
x = 31
Step-by-step explanation:
The perimeter is the sum of the equal-length sides:
63 = (x -10) +(x -10) +(x -10)
63 = 3x -30 . . . . . . . . collect terms
21 = x -10 . . . . . . . . . . divide by 3
31 = x . . . . . . . . . . . . . add 10
{y,x} = {10,-5}
sorry if this dont make sense
solve equation [2] for the variable y
y = 4x +30
plug this in for variable y in equation [1 ]
(4x+30) +3x= -5
solve [1] for the variable x
7x= - 35
x= - 5
by now we know this much
y= 4x+30
use the x value to solve for y
y=4 (-5) + 30 = 10
solution
9 = 3^2
15 = 3 x 5
20 = 2^2 x 5
24 =2^3 x 3
A = 2^3 x 3^2 x 5 =8 x 9 x 5 = 360
x=-2 and -32/3
|3x+19|=13
3x+19=13 and 3x+19=-13
x=-2 and x=-32/3
The slope is 2.
Use the slope formula:
m = y2 - y1 / x2 - x1
Plug in the numbers from the ordered pairs:
m = 3 - 1 / 1 - 0
m = 2/1
Simplify:
m = 2
12
2/3 x + x = 20
2/3 x + 3/3x = 20
5/3 x = 20 ... times 3/5 both sides
x = 12
check: 2/3 x 12 + 12 = 8 + 12 = 20
