If a star Flashes Every0.4 seconds And the other every 0.7 seconds How long will you wait for them to flash again together

Juan created a chart to him study for a test. which headings best complete the chart? x: transparent objects y: opaque objects x: opaque objects y: transparent objects x: high frequency waves y: low frequency waves x: low frequency waves y: high frequency waves

Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?

The speed of light can be used to measure the