Look at step 1, - 6 + 6 = 0
3+6=9
Answer:
1 penny is equal to 2.5 grams
Step-by-step explanation:
1 penny = 2.5 grams
2 pennies = 5.0 grams
3 pennies = 7.5 grams
Just add 2.5 grams every penny.
Pick any number of pennies and multiply it by 2.5 (Don't forget to add grams ( g ) at the end.
Answer:
chemistry textbooks:177
physics textbooks:237
Step-by-step explanation:
414-60=354
354/2=177
177+60=237
Use the Cosine Rule
q^2 = 20^2 + 30^2 - 2^20*30 cos 15
= 140.89
so q = sqrt 140.89 = 11.9 (answer)
