Answer:

Step-by-step explanation:
we know that
In the right triangle ABC of the figure
Applying the Pythagoras Theorem

substitute the given values

Solve for c




Answer:
First one I think. I hope this helps.
Step-by-step explanation:
Just convert the fractions into decimals. You can use a calculator.
Answer:
Answer- 0
Step-by-step explanation:
2+2+2-2+4-8= 4-2+4-8=0
hope this helps :)
Answer: 28
Step-by-step explanation: you have to add 21 + 7 because your counting up from -7 to 21