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Here is my work I need help figuring out the answers Ill post the teachers comments down below.
What is the value of b if...
11. a=6 and c=12
108
12. a=18 and c=30
576
13. a=7 and c=SQRT 85
14. a=1 and c=5
24
15. a=1 and c=SQRT 2
16. a=10 and c=12
44
17. a=21 and c=35
784
18. a=5 and c=18
306
19. a=6 and c=6(SQRT 2)
20. a=11 and c=12
23
teacher comments:
Make sure that you always STATE the final answer... if you end up wth c2 = 4... then c=2 which is the SQRT of 4. Since 4 is a perfect square, you can give it's actual sqrt. IF you were to get something like c2 = 5... your answer would just be c=√5. Since 5 is NOT a perfect square, just leave the answer as a sqrt
Also... make sure that you understand when you SQUARE a SQRT... the operations CANCEL each other out and leave ONLY the number from under the radical!
Ex... √5 2 = √5 * √5 = 5
ex 2.... (2√5)2 = 2*2*√5*√5 = 4*5 = 20
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