Richard found 93 - 67 by adding up on the open number line. is he correct? explain. then write an addition equation to show how you could check his work

Yes, he is correct

Step-by-step explanation:

In the picture attached, the complete question is shown.

Richard instead of subtract 67 to 93 by subtracting successively 6 tens and 7 ones starting at point 93, which result in 26; he added 26 to 67, to do so he marked 67 on the line and then added 2 tens and 2 threes until he reached 93. Notice that 10 + 10 + 3 +3 = 26.

To check his work we make the following addition: 67 + 26 = 93, which is another way to write 93 - 67 = 26

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step-by-step explanation:

60

step-by-step explanation:

every triangle measures a total of 120 degrees. you have to find angle c. we know that isosceles triangles angles are equal. 60 degrees plus 60 degrees gives you 120.