Find m∠dob. a) 36.5° b) 73° c) 107° eliminate d) 136°

The solution is 73°. According to one of the circle theorems, the angle formed by the intersecting chords is equal to the average of the arcs intercepted by the angle and its vertical angle.

 = 107°

So m∠DOC = 107°

Since m∠DOB is supplementary to m∠>DOC we know that its measure is 73°.

explanation:

infrared radiation has wavelength in the range between 700 nm and 1 mm. lets' convert these values into scientific notation, keeping in mind that:

let's start from the lower value, we have:

(we moved the dot two places to the left, so we increased the exponent by 2 units, from -9 to -7)

the higher value is:

so, the range of wavelength of infrared radiation is:

answer: math isn’t just mysterious because the majority of us find it so difficult to understand – it’s also the basis of the universe, giving us clues to physical phenomena like the motion of gases in the atmosphere and the way that physical particles interact with each other amid all the possible variables in three-dimensional space.