Which of the following statements about the image below is true?

Answer

The statment true about the image be

The measure of ∠TRU is 72° .

Reason

As shown in the image

∠QRU = 90°

∠ TRQ = 18°

Now ∠QRU be written as the sum of the ∠ TRQ and  ∠TRU .

Thus it becomes  

∠QRU =  ∠ TRQ + ∠TRU

put the value ∠QRU and ∠ TRQ

we get

90° = 18 ° + ∠TRU

Solving the above

∠TRU = 90° - 18°

∠TRU = 72 °

Therefore the measure of ∠TRU is 72 °.

Hence proved

b. 153 students do not participate in sports and seventy-five 12th graders were surveyed

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: