Step-by-step explanation:
1: change 'sin²A' and 'cos²B' into (1-cos²A)and (1-sin²A) respectively.
2:open the brackets and put signs accordingly.
3: cancel (-1) and (+1).
4: remaining is your answer.
I think you would go like this: If 15 covers 5 inches then I know I am going to need at least 30 but I have 3 more spaces so I have to divide 5/15 (That is 15 divided by 5) The answer is 3 so I have to go 3 x 3 which is 9 and then I add
9 to 30 which is 39 so there is my answer. If I did it incorrect please tell me. :). I hope it helps.
Answer:
She can buy 8 bags of soil
Step-by-step explanation:
2.7s + 14.9 < 39.2
Subtract 14.9 from both sides
2.7s < 39.2 - 14.9
2.7s < 24.3
Divide both sides by 2.7
s < 24.3 /2.7
s < 8.89