Show that the quadrilateral with vertices A(0,0), B(a,0), C(a + b, c) and D(b, c) is a parallelogram.

answer: a

step-by-step explanation:

if xy ~ yz therefore xy would be the same length as yz

answer: 48

just remember to use pemdas:

parentheses

expressions

multiplication

division

addition

subtraction

9x

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: