Hitunglah nilai x jika ada yang memenuhi persamaan nilai mutlak berikut. jika tidak ada nilai x yang memenuhi berikan alasanmu
2[3x-8] = [-4]
[x] : [x-2] = -4, x bukan 0
( tanda : sama dengan per ya)
selesaikan persamaan nilai mutlak berikut ini
[2y + 5] = [7 - 2y]
[4x - 3] = -[2x - 1]

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

Kayla wants to find the width, ab, of a river. she walks along the edge of the river 65 ft and marks point c. then she walks 25 ft further and marks point d. she turns 90° and walks until her location, point a, and point c are collinear. she marks point e at this location, as shown. (a) can kayla conclude that δ and δ are similar? why or why not? (b) suppose de = 15 ft. what can kayla conclude about the width of the river?

Given that sin∅ = 1/4, 0 < ∅ < π/2, what is the exact value of cos∅? a. (√4)/4 b. (√15)/4 c. (4π)/2 d. (4√2)/4