What number when subtracted from the sum of 5.6 and 9.4 will give 12.8? *

2.2

Step-by-step explanation:

5.6-9.4=15.0

so you subtract 12.8 from 15.0 which gives you the answer 2.2 so your answer is 2.2

he spend 5.1 minutes chatting with his friends

step-by-step explanation:

2/5+1/2=9/10

6/1-9/10=5 1/10

d 25 pi/6

step-by-step explanation:

the diameter is 10 inches

the radius is 1/2 of the diameter or 5 inches

the area of the circle is

a = pi r^2

  = pi 5^2

  = 25 pi

the slice is 60 degrees of the entire circle.

60 degrees out of 360   60/360 = 1/6

the area of the slice is 1/6 of the circle

a slice = 1/6 a circle

a slice = 1/6 * 25 pi