N is equal to 9 because the 12’s cancel out leaving the 9
Answer:
C
Step-by-step explanation:
The area (A) of a triangle is calculated as
A =
bh ( b is the base and h the perpendicular height )
Here b = 19 and h = 16 , thus
A = 0.5 × 19 × 16 = 152 yd² → C
Answer:
4.0486
Step-by-step explanation:
The margin of error is calculated using 
Where n=60 is the sample size and
is the population standard deviation.
The critical value corresponding to 95% confidence interval is 
We substitute the values to obtain;


Step-by-step explanation:
7 years
leap years in 7 years:- 1
7 minus 1 equals to 6
6 calendar years to days:- 2190 days
so, $0.75 times 2190 = $1642.5
1642.5 plus $4.35 equals to 1646.85
Answer:
Rhombus,and pentagon
Step-by-step explanation:
a rhombus has only obtuse or acute angles same with the pentagon.