Simplify -5(20 + 3).

85
-115
-97
-103
ill give brainliest

Evaluate-27 ^4/3/8 a) - 81/16 b) 81/16 c) 16/81

There are 15 plates and each plate is either 7 or 12 inches diameter. which systems of equations do you use to find the number of 7 inch plates, x and 12 inch plates, y

The distance of a chord from the centre of a circle is 12cm and the lenght of the chord is 10cm. find the radius of the circle