Counting by Tens with numbers
10, 20, 30, 40, 50, 60, 70, 80, 90
Counting by Tens with words
ten, twenty, thirty, forty, fifty, sixty, seventy, eighty, ninety, one hundred
Number Patterns when counting by Tens
When you count by tens the numbers create a pattern. All the numbers end with a zero. The first digits are just like the numbers when you count (1, 2, 3, 4, 5, etc.). This pattern gives the numbers 10, 20, 30, 40, 50, etc.
found from: http://www.aaamath.com/k4c_cox1.htm
Answer: (3p^2 + 1) . (p^3 +4)
Step-by-step explanation:
Area of a rectangle equals length multiplied by width. Given length as 3p^2 + 1 and width as p^3 + 4
Area = 3p^2 + 1) . (p^3 +4)
This is so as 4 is not a cube and cannot be factored.
I hope this helps.
Answer:

Step-by-step explanation:
sum of interior angles in a triangle is 180 degree
interior angles are (5x+3y)∘,(3x+20)∘, and (10y+30)
add all the angles and make it equal to 180

combine like terms


subtract 50 from both sides
