The distance from jim's house to the intersection of thornwood drive and holly drive is given by the expression 15x ? 7. the total distance from jim's house to adam's house when traveled on thornwood drive and holly drive is given by the expression 23x ? 2. find a single expression that represents the distance from adam's house to the intersection of thornwood drive and holly drive. a) 8x + 5 b) 8x ? 9 c) 38x + 5 d) 38x ? 9 eliminate

hello from mrbilldoesmath!

answer:

25x^2 + 90x + 84

discussion:

mn(x) = m(n(x)) = m( 5x + 9) =

(5x + 9)^2 + 3 =>

25x^2 + 90x + 9^2 + 3 =

25x^2 + 90x + 84                 (as 9^2 = 9*9 = 81)

which is the second choice

regards,  

mrb

p.s.   i'll be on vacation from friday, dec 22 to jan 2, 2019. have a great new year!

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:

sorry i got nothing

step-by-step explanation: