Answer:
480
Step-by-step explanation:
Sn = n÷2 × (2a + (n-1)d)
n = 20 a = -14 d = 4
S20 = 10 × (-28 + 19 × 4) = 480
Answer:
r^5
Step-by-step explanation:
Answer:
x=-3, y=9. (-3, 9).
Step-by-step explanation:
-9x-5y=-18
4x+5y=33
---------------
-5x=15
x=15/-5
x=-3
4(-3)+5y=33
-12+5y=33
5y=33-(-12)
5y=33+12
5y=45
y=45/5
y=9
The value 8 is significantly different from the other four values. Thus, the median would be the most appropr. measure of the center of this data distribution. Rearranging the data in ascending order:
8, 29, 31, 32, 33
The median is the middle value; it is 31.
Step-by-step explanation:
a.
(ax + b)² = 0
√( (ax + b)² )= √0
ax + b = 0
dont know the rest
