T/f i can take the square root of a negative number
t/f if i add two rational numbers i get a rational number
t/f if i multiply 2 negative integers, the product is negative
t/f if i add a positive and a negative number, i always get a negative
t/f a rational number is always a whole number

Aplane flies around trip to philadelphia it flies to philadelphia at 220 miles per hour and back home with a tailwind at 280 miles per hour if the total trip takes 6.5 hours how many miles does the plane fly round trip

Apinhole camera is made out of a light-tight box with a piece of film attached to one side and pinhole on the opposite side. the optimum diameter d(in millimeters) of the pinhole can be modeled by d=1.9[ (5.5 x 10^-4) l) ] ^1/2, where l is the length of the camera box (in millimeters). what is the optimum diameter for a pinhole camera if the camera box has a length of 10 centimeters

Can someone me with my math problem pls my teacher is on my back about this