brain freeze i suck at math could you help me with this? "Amy needs to order a shade for a triangular-shaped window that has a base of 4 feet and a height of 8 feet. What is the area of the shade?"

The radical equation 2+√2x-3 = √x+7 has a solution set [x= a0} and an extraneous root x = a1.

Write the fraction 9/50 as a decimal if needed round to the nearest hundredth

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?