Which expression has a positive value?
A. Negative 4 + (negative 5) (negative 6) divided by (negative 3)
B. 8 Left-bracket 10 divided by (2) (negative 2) Right-bracket
C. 3 (negative 64 divided by 8) + 25
D. Negative 2 (negative 5) (negative 3) divided by 10

Someone this asap for a group of students attends a basketball game. * the group buys x hot dogs at the concession stand for $2 each. * the group buys y drinks at the concession stand for $3 each. the group buys 29 items at the concession stand for a total of $70. how many hot dogs did the group buy?

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?

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?