I really don't understand what it is asking. Also I need help.

1) 45°; 2) 3√2.

Step-by-step explanation:

1) according to the condition the lengths BC=AC and m(∠C)=90°, it means m(∠θ)=(180-90)/2=45°;

2) if AC=BC=3 and m(∠C)=90°, then AB=AC*√2=3√2

t = 3

step-by-step explanation:

put t = 3 in this expression :

(3²-1)(3²-2)(3² - 3)(3² - 4) = 8×7×6×5 = 56×30 = 1680

a. the are of the rectangle is 18.25

b. 18.25 times two is 36.50

rae me : d