Answer:
2x-15=12
Step-by-step explanation:
X=12 cause i looked it up online
Answer:
780
Step-by-step explanation:
So when you're adding consecutive numbers like this. 1+2+3...+39. You add 39 and 1. This is 40. 2+38 is 40. This is a pattern. Now, we do 40 multiplied by 39 and this will give you the number 1620. After this you would have to divide this product by 2. The answer will soon be 780.
Have you tried asking a teacher for help before this
and did you try to take notes cuse notes are your best friends
Answer:
A right angle.
Step-by-step explanation:
65+25 =90