Hi! Can someone help me with this maths problems? | hola! Alguien podria ayudarme con estos problemas de matemáticas? 1- In Sydney, on 18 January 2013, the maximum temperature was 45. 8°C and the minimum temperature was 21.7°C. What was the range in temperature that day?

round: Maximum_ Minimum_

Estimate difference:
Exact difference:

step-by-step explanation:

circumference divided by 3.141592654 then timesthe radius twice

whatvare the choices

step-by-step explanation:

we have three similar triangles, because each has a right angle and shares an angle.   let's write the angles in order: opposite to short leg, long leg, hypotenuse.

cab similar to bad similar to cbd

or as ratios,

ca: ab: cb = ba: ad: bd = cb: bd: cd

we also know

ac = ad + cd

(ad+cd): ab: cb = ba: ad: bd = cb: bd: cd

(ad+cd)/cb=cb/cd

we have cb=6, ad=5 and seek x=cd.

we reject the negative root and conclude x=4

answer: 4