Answer:
B
Step-by-step explanation:
80*17=1360/choice B
Given:
Standard form and expanded notation
Find-:
The number shown in standard form and expanded notation
Explanation-:
The standard form is
Standard form = The standard form is

For example, is

The expanded form is
The expanded = Expanded form is a way to write a number by adding the value of its digits. We can use a place value chart to determine the value of a number's digits.
For example
Answer:
No
Step-by-step explanation:
n₁=4
n₂=9
n₃=16
We can see that all three numbers are perfect squares of one higher than the figure number
So, n₁₅=(15+1)²=16₂=256
256≠225
Answer: the first, second, and fourth are correct.
Step-by-step explanation:
28-10%=25.2
28-25%=21
28-35%=18.2
The sum (for all polygons) of the exterior angles are 360. So, 360/11 is 32.72
hope this helps!