Which statement explains how the lines 2x + y = 4 and y = 1/2 x + 4 are related?

A. They are parallel.
B. They are perpendicular.
C. They are the same line.
D. They are not related.

B

Step-by-step explanation:

First find solve for y in the first equation.

2x+y=4

-2x     -2x

y=4-2x

I then put it into a graphing calculator and found they are perpendicular.

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 )