You can download this app called photo math and take a pic of it and it tells you the answer
Answer:
natural numbers and integers
To find the perimeter you do length + width so you do 12.4 + 5.9 to get the perimeter.
There is NO MODE for the data set because none of the numbers are repeated at least once.
Answer:
R = 90
Step-by-step explanation:
Triangles will always equal 180 degrees. If you add 61 + 29 = 90. If two of the three angles already equal 90 degrees, then you would subtract 180 - 90. Therefore, the remaining angle would have to be 90 degrees.