If 40% of x + 20% of x + 1/10 = 75% of x, then find the value of x. Please give answers with steps

Two lines parallel to the same plane are parallel to eachother

What is the reflection image of (5,-3) across the line y = -x?

Starting at home, emily traveled uphill to the hardware store for 606060 minutes at just 666 mph. she then traveled back home along the same path downhill at a speed of 121212 mph. what is her average speed for the entire trip from home to the hardware store and back?