Which of the following expression are equivalent to -)-5. choose 2 answer

a. -8-1-5
b. -8+1-5
c. -8+(-1)+(-5)
d. (8+1)-5
e. -(8-1+5)

Inez has a phone card. the graph shows the number of minutes that remain on her phone card a certain number of days.

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?

John used linear combination to solve the system of equations shown. he did so by multiplying the first equation by -3 and the second equation by another number to eliminate the x-terms. what number did jonas multiply the second equation by? 4x-6y=23x+5y=11