Answer:
Mean age = 1271.27
Step-by-step explanation:
No of children = 77
The age at which children first began to combine words = 16.51 months
Mean age = No of children × age at which children first began to combine words
= 77 × 16.51
= 1271.27
Mean age = 1271.27
Answer:
y = -1/2x^2 -5x -45/2
Step-by-step explanation:
Multiply it out and collect terms.
y = -1/2(x^2 +10x +25) -10 . . . . . expand the square
y = -1/2x^2 -5x -25/2 -20/2 . . . eliminate parentheses
y = -1/2x^2 -5x -45/2 . . . . . . . . collect terms
Answer:
No
Step-by-step explanation:
The two shorter lengths won't make a triangle of any kind.
They will simply form a straight line parallel to the base.
2/9 because I know that’s it
Answer:
C- ) 70 degrees
Step-by-step explanation:
180 is the degree of half circle you already have the first number 110 now you need to find out which number gets you to 180 and the only one that works it 70
110+70
=80
