To estimate the sum of two mixed numbers, Grace rounds one number to 7 and the other number to 4. Which could be the number she rounds to 7?
A. 7 5/9
B. 7 11/15
C. 6 2/5
D. 6 9/14

probability for j is 1/4

while

a is 1/6

step-by-step explanation:

the first one is x^2+2x+2

the second one is x^2+4

the last one is x^2-4x+8

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