The perimeter of triangle is the sum of the three sides of the triangle.
x + 3x - 1 + 4x + 2 = 81
8x + 1 = 81
8x = 80
x = 10
The length of the sides of the triangle are 10 inches, 3(10) - 1 = 29 inches, 4(10) + 2 = 42 inches.
Answer:
Step-by-step explanation:
sqrt(2+x) <u>></u> 6-2x
taking square on both sides
2+x <u>></u> 36-24x+4x^2
0 <u>></u> 34-25x+4x^2
0 <u>></u> (2x)2-2(2x)(25/4)+(25/4)^2 -(25/4)^2 +36 (by completing square)
49/16 <u>></u> (2x-25/4)^2
taking square root
7/4 <u>></u> 2x-25/4 , -7/4 <u><</u> 2x-25/4
8 <u>></u> 2x , 9/2 <u><</u> 2x
4 <u>></u> x , 9/4 <u><</u> x
Vertex = (3, 5)
focus = (3, 7)
directrix is y = 3
Answer:
-6x +2
Step-by-step explanation:
( x + 3 ) + ( − 7 x − 1 )
Combine like terms
x -7x +3 -1
-6x +2
Answer:
A
Step-by-step explanation:
The other values are lesser than 5.63