The sum of two numbers is 90 their difference is 34what are the two numbers

Add up 90 and 34
You get 124
Divide it by 2
You get 62

62 plus what is 90
Its 28

You're done !!

62 plus 28 is 90
62 minus 28 is 34

X+y=90
x-y=34
Adding two ;2x =124 ;x=62 and y=28

Answer: d. 39 cmin the diagram, the approximate length of the minor arc de is 39 centimetres.step-by-step explanation: the formula for the length of an arc in a circle is as displayed below.let the length of the minor arc de = xx = 2( pi )r × angle of sector / 360°from this, we will substitute the values given from the problem into the formula to obtain the length of the minor arc de.x = 2( pi )r × angle of sector / 360°r = radius = 25cmpi as an approximate value = 3.14angle of sector = 120°x = 2( 3.14 )( 25 ) × 120° / 360°x = 157 × 1 / 4x = 39.25x = 39 ( rounded to the nearest whole number as an approximate value )