Step-by-step explanation:
= - 4
= a* + (3- 1) d*
- 4 = a + 2d . . . . . . . . .(i)
= - 29
= a + ( 8 - 1) d
- 29 = a + 7d . . . . . . . . (ii)
subtracting equations (i) and (ii)
25 = 5d
d = -5
placing d = -5 in equation (i)
a - 10 = -4
a = 6
For an arithmetic Progtession
= a + (n - 1)d
= 6 + (n- 1)-5
= 6 - 5n + 5
*
*
Answer:
The answer is F: 108
Step-by-step explanation:
144 - 108 = 36
108 ÷ 3 = 36
Answer:
which one is 15
Step-by-step explanation:
Shaded area will be the part of the area of the circle which have a central angel = 243
Shaded area = (243/360) π r^2
= (243/360) * 3.14 * 12.5^2
= 331.2
Answer:
F 6
Step-by-step explanation:
3 / (1/2)
When dividing by a fraction flip it over and multiply
3 * (2/1) = 6/1 which is just 6