Yesterday the temperature at noon was 15.3°F. By midnight, it had gone down by 26°F. What was the temperature at midnight?

-10.7°F.

Steps used to get

1. Use this rule: a-b= -(b-a)

-(26-15.3)

2. Use the algorithm method.

  5 10

 26.0

-15.3

   10.7

3. After simplification, we have:

−(26−15.3)=−10.7

4. Therefore, 15.3-26=-10.7

−10.7°F.

Done by NeighborhoodDealer

35%

step-by-step explanation:

arc length = 6.63311 ft.

step-by-step explanation:

the formula the arc measure is:

arc length s=2πr(c)/360

where:

c   is the central angle of the arc in degrees

r   is the radius of the arc

π   is pi, approximately 3.142

using the above formula we get

s =

thus we find that arc length of an arc for a circle of radius 20 feet and central angle 19 degrees is

6.63311 feet