Answer:
A) The amount of change held by a teacher at the end of each day for a year.
Step-by-step explanation:
A normal distribution has a bell-shaped density curve described by its mean and standard deviation.
A) The amount of change held by a teacher at the end of each day for a year - This is probably near normal because the teacher cannot have negative cents in her or his pocket.
Answer:
She bought 8 books
Step-by-step explanation:
8.96/1.12
Answer:
80
Step-by-step explanation:
Substitute the given values into the expression
b²(a - 2c)
= (- 4)²(3 - 2(- 1))
= 16(3 + 2)
= 16 × 5
= 80
Answer:
31.5 cm²
Step-by-step explanation:
Calculate area of a triangle with this formula:
Area = 
base * height
Substitute in known values
Area = 7 * 9
Multiply 7 by 1/2
Area = 3.5 * 9
Multiply
Area = 31.5 cm²
Hope this helps :)
