Alexa can blow 15 balloons in 20 minutes. Sara can blow 18 balloons in 25 minutes, Shirley can blow 16 balloons in 21
minutes and Sam can blow 12 balloons in 23 minutes.

Assuming that all balloons are blown to the same size, who can blow
balloons at the fastest rate?

rate of blowing balloons of Alexa = 15/20 = 0.75

rate of blowing balloons of Sara = 18/25 = 0.72

rate of blowing balloons of Shirley= 16/21 = 0.76

rate of blowing balloons of Sam = 12/23 = 0.52

from above calculation we concluded Shirley can blow balloons at the fastest rate!

rotation point l

step-by-step explanation:

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: