Answer: D
Step-by-step explanation:
Standard Deviation σ2 =
Σ(xi - μ)2/N
=(1 - 5.3)2 + ... + (9 - 5.3)2/10
=68.1/10
= 6.81
σ = √6.81
= 2.60959767014
B) σ2 =
Σ(xi - μ)2/N
=(3 - 61.7)2 + ... + (99 - 61.7)2/10
=58414.1/10
= 5841.41
σ = √5841.41
= 76.429117488036
C) (1 - 11.4)2 + ... + (1 - 11.4)2/10
=8758.4/10
= 875.84
σ = √875.84
= 29.59459410095
D) (79 - 79)2 + ... + (79 - 79)2/10
=0/10
= 0
σ = √0
= 0
I hope this helps, mark as Brainliest please.
-x + 4 + 20x = 156
19x + 4 = 156
- 4. -4
19x = 152
19. 19
X = 8
They do not appear to be symmectric. they seem to line up well
Answer:
650.
Step-by-step explanation:
ok so first multiply the Length and the width of the rectangle together to get its area, which is 500.
to find the area of the triangle, just multiple the length times the width (15 x 20) and divide it by two. You should get 150.
Add 150 and 500 together, and that's your total area:
650.
Have a nice day dude
600×3.5%=21. As a result, there are 21 phones that likely to be defective. Hope it help!
