Which of the following equations have no solutions?
choose all answers that apply:
choose all answers that apply:

(choice a)
a
-40x+40=20x+20−40x+40=20x+20minus, 40, x, plus, 40, equals, 20, x, plus, 20

(choice b)
b
20x+40=40x+2020x+40=40x+2020, x, plus, 40, equals, 40, x, plus, 20

(choice c)
c
-20x+40=-20x+20−20x+40=−20x+20minus , 20, x, plus, 40, equals, minus, 20, x, plus, 20

(choice d)
d
40x+40=40x+2040x+40=40x+20

Choice D, because, there is no equal symbol

whole numbers.

step-by-step explanation:

we are given the average monthly rainfall (in millimeters) model r(m) for the years 1900-2009 as a function of the month number m.

as we can see m is taken for the number of months for years 1900-2009.

we know that number of months can't be a negative number or decimal number or a fraction.

so, the number of months could be only positive whole numbers.

therefore, whole numbers is more appropriate for the domain of r.

answer: the angel abc is 30°,and the abc is a triangle where the angel bac is 90°

so ac is the half of 24=12ft,and from the pythagorean theorem we find ba

ba=√bc^2-ac^2=√576-144=√432=12√3ft

so bac is 12+12√3=12(1+√3)ft