Answer:
Step-by-step explanation:
actually, it IS 7
The law of cosines states that, if
is the angle between sides b and c,

So, plugging our values, we have

This is equal to

Answer:
She will earn 1,920 points. PLEASE GIVE BRAINLIEST!!!
Step-by-step explanation:
Level 1 : 15 points x 2 = level 2
Level 2 : 30 points x 2 = level 3
Level 3: 60 points x2 = level 4
Level 4: 120 points x2 = level 5
Level 5: 240 points x2 = level 6
Level 6: 480 points x2 = level 7
Level 7: 960 points x2 = level 8
Level 8: 1,920 points
Answer:
23
Step-by-step explanation:
91/70=(29+x)/40