Challenge in City A, the temperature rises 7°F from 8 A. M. to 9 A. Then the temperature drops 6°F from 9 AM to 10 A. m. In City B, the temperature drops 2°F from 8 A. M. to 9 A. M. Then the
temperature drops 4°F from 9 A. M. to 10 A. M. Write an expression that represents the change in
temperature from 8 A. M. to 10 A. M. for each city. Simplify and interpret each sum.

34.5 cm

step-by-step explanation:

generally for a circular segment of angle, θ° and radius r

arc length

= (θ/360) x circumference

= (θ/360) x 2πr

in our case, θ = 60°, π=3.142 and r = 33 cm

substitute into above formula

arc length

= (60/360) x 2(3.142)( 33) = 34.5 cm

for future students the answer is b

hope i

-lavira: )

proportions are fractions that equal to each other. so if two fractions are the same, they are proportional.

let's check the answers to see if they are proportional.

question a is not proportional because you can't turn 1.5/3 to 3/9. if you try to multiply 1.5/3 by 2 or 3, you wont get 3/9. it's impossible to make the fractions the same.

question b is not proportional because you can't turn 22/33 to 4/6. 33 can't go into 6.

question c is proportional because when you multiply 2 and 3 by 71, you would get 142/213, and those fractions equal to each other

question d is proportional because when you divide 14 and 7 by 2, you would end up with 7/3.5, and those fractions equal to each other.